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Terms of engagement

Clear rules.
No surprises.

Premium projects succeed when both sides know what, when and for how much. Below is how we run projects — from the first conversation through launch and ongoing care. These are not clauses to swallow. This is how we deliver on time.

Applies to
AERIX LABS B2B projects
Status
Integral part of the proposal
Version
2.4 · 21 Aug 2026

Five rules that change the most

  1. 1A closed stage stays closed. No feedback within 5 working days means sign-off and we move on.
  2. 2Three rounds of revisions included. A round is one complete list, not a stream of messages.
  3. 3Defects are fixed free of charge during stabilisation and warranty. Changing your mind is a change of scope — quoted separately.
  4. 4The schedule works both ways. Late materials or decisions push the delivery date.
  5. 5Copyright transfers to you once payment is complete, under a separate signed agreement — the law requires it.
Part IHow we run a project
01

We work in stages

We split every project into five stages. Each ends with a concrete deliverable and a sign-off gate — the moment we close that scope together and move forward.

01
Discovery
Goals, users, scope, functional specification
02
Strategy
Information architecture, content, visual direction
03
Design
UI design for every view, design system
04
Development
Build, motion, integrations, optimisation
05
Launch
Testing, production deployment, handover

This way we do not build blind for three months only to find out the direction was wrong. You confirm each stage before the next one starts.

The specification from Discovery is the reference point for the whole project. It settles what belongs to the scope and what is a new idea. The schedule that follows from it is binding provided both sides meet their deadlines.

02

Stage sign-off

Once a stage is complete we hand the result over for review. You have 5 working days to send feedback — as one complete list.

  • No feedback within that window means the stage is deemed accepted. Acceptance follows from the agreed review period expiring; we may issue a unilateral handover record solely as an administrative record of its date and scope.
  • Need more time? Just say so — we will agree a new date. We only ask that it be agreed rather than silent.
  • Feedback sent after the deadline or outside the shared list goes into the next round, or to a quote if the rounds are used up.
  • Feedback that contradicts a decision approved at an earlier stage is a change of scope, even if it concerns the same screen.
  • An accepted stage is closed. Returning to it is possible — we treat it as a change of scope.

This is the single most important rule in the document. A closed stage means a predictable deadline and budget. A stage left open indefinitely means a project that never ends — and that is bad for both sides.

03

Rounds of revisions

The project price includes three full rounds of revisions, assigned to the stages where they actually change something:

Round 1
Visual direction — before we design everything
Round 2
UI design — refinements on finished views
Round 3
Build — corrections on the working site

A round is one complete list of feedback, not a series of individual messages. Gather everything, think it through, send it once. Feedback trickling in over a week is still one round — just far less effective and slower for you.

An unused round does not carry over to the next stage — it belongs to the moment where it makes sense. Typos, punctuation fixes and swapping a single sentence do not consume a round; we handle those right away.

04

Defect versus change

This distinction is objective and verifiable — it does not depend on our judgement:

Defect — fixed free of charge

The result does not match the approved design or the specification.

“The menu breaks on iPhone”, “the form does not send email”, “the header differs from the approved design”

Change — uses a round

The result matches what we approved, but you now want it differently.

“that blue should be darker after all”, “let's move this section up”, “let's swap the hero image”

We fix defects free of charge during the stabilisation period and within the 12-month warranty described below. Rounds are consumed only by changes.

What we test on

We verify compliance on current, supported browsers and devices:

Chrome · last 2 versionsSafari · last 2 versionsFirefox · last 2 versionsEdge · last 2 versionsiOS / Android · last 2 releasesScreen widths from 320 px

What is not a defect are the things outside our control:

  • Natural differences in how fonts, shadows and animations render across browsers and operating systems.
  • Appearance on hardware or browsers outside the list above — we can support them if we write them into the scope.
  • Effects of browser extensions, ad blockers, data-saver modes and automatic page translators.
  • Consequences of post-launch changes made by you or anyone else — to content, code or plugins.
05

New ideas and changes of scope

Good ideas appear mid-project — that is normal and they are usually right. We do not refuse them. We quote them separately.

  • You receive a short summary: exactly what we will do, what it costs, how far it moves the deadline. The quote is valid for 14 days.
  • We start work only after your written approval — an email reply is enough. Nothing happens automatically and nothing appears on an invoice without your consent.
  • Work outside the scope is billed hourly at the rate stated in the proposal, in 30-minute increments.

We also treat as a change of scope: returning to a previously accepted stage, feedback raised after the rounds are used up, and changes to the business assumptions the specification was built on.

06

One decision-maker

You nominate one decision-maker on your side. Input from the team, a partner or the board is of course welcome — we only ask that it reaches us consolidated and resolved.

Conflicting feedback from several people is the most common cause of delay in design projects. A single deciding voice removes the problem entirely.

Changing the decision-maker mid-project is of course possible. If it involves revisiting earlier decisions, that is a change of scope.

07

One feedback channel

We collect all feedback in one tool, which we share at the start of the project. Every item has a status there: reported, in progress, done.

Not because we like tools — because a note dropped in a phone call or a message at 11pm gets lost, and then each side remembers it differently. One list means nothing slips and nothing gets done twice.

We are available by phone and day to day — we simply record what we agree in the same place. What binds are the items recorded in the tool or confirmed by email to the addresses given in the proposal.

Part IIWhat sits on your side
08

Materials, content and access

You supply copy, logos, photography, credentials and company details by the dates set in the schedule. We can produce content and graphics for you — that is a separate line in the quote.

Rights to materials

You are responsible for holding the rights to the materials you give us — copy, images, trade marks and databases. We do not verify this for you and have no way of doing so.

  • If a material turns out to infringe someone else's rights and we incur costs as a result — a claim, damages, legal fees — you reimburse us.
  • Stock photography, commercial fonts, plugins and SaaS licences are purchased in your name and on your account, or re-invoiced. That way the licence is yours, not ours — and it stays with you after the project ends.
  • The domain is registered to you. Hosting follows one of the two models stated in the proposal: your account with working access for us, or hosting managed by AERIX LABS. The selected model does not change ownership of the domain, content, data or paid project deliverables.

When the project is waiting on you

  • A delay in delivering materials moves the delivery date by at least the same amount. Not more out of spite — you simply return to the production queue and wait for the next free slot.
  • If the project stalls for lack of materials or decisions for more than 30 days, we park it and settle the stages completed to that point.
  • Restarting a parked project requires a new date and a reactivation fee — the team has been working on other projects in the meantime.
  • After 90 days without contact we treat the project as completed to the extent delivered.

This is not a clause invented against you — the Polish Civil Code works the same way (Art. 640), allowing a contractor to set a deadline and withdraw when the client fails to cooperate. We would rather say it plainly at the start than invoke a statute mid-project.

09

Deadlines and cooperation

The schedule in the proposal is realistic and we take it seriously. It is, however, conditional: it assumes materials, decisions and approvals arrive on the agreed dates.

A delay on our side
We tell you immediately, give a new date and — where it is our fault — agree compensation on the terms set out in the proposal.
A delay on your side
The date moves day for day, plus the time needed to re-enter the production schedule.
External causes
Supplier outages, third-party API changes, force majeure — we agree a new date with no claims on either side.

We work in production slots. Your project has a reserved team and specific weeks in the calendar — which is why a shift is never “free” for either side. That is an argument for both of us to keep to the dates, not a penalty.

10

Payments

We invoice in stages, following the schedule in the proposal — typically three instalments tied to the sign-off of successive stages.

  • The first instalment is an advance payment towards the fee. It reserves your place in the schedule and starts the work, and it is credited against every final settlement — it is never charged twice.
  • All prices are quoted net, plus VAT.
  • Invoices are payable within 7 days unless the proposal states otherwise.
  • If payment is more than 14 days late we may suspend further work until the account is settled — after notifying you first. The delivery date then moves by the length of the suspension.
  • Late payment entitles us to statutory interest for delay in commercial transactions and to the flat-rate recovery compensation (EUR 40 / 70 / 100 depending on the amount). This follows directly from statute — we mention it so it is never a surprise.
  • Source files, production credentials and the transfer of copyright follow payment of the full fee.

External costs — hosting, domain, licences, stock photography, SaaS services — are not included in the fee unless the proposal says otherwise. We state them in advance and agree them before purchase.

11

Cancellation and parting ways

Sometimes a project has to stop. Strategy changes, budgets change, owners change. We do not make a drama of it — we simply set out how the settlement works, so nobody has to negotiate it in the heat of the moment.

The proposal identifies which deliverables form a result-based project — such as designing and building a website — and which are ongoing, consulting or hourly services. Each model is settled differently.

If you cancel

  • You can do so at any time, without giving a reason. A message is enough.
  • For a result-based project, the settlement starts with the agreed fee less the costs we demonstrably save because the remaining work will not be completed. This contractual rule reflects Art. 644 of the Polish Civil Code. Closed stages that were priced separately are included at their full value.
  • For ongoing, consulting and hourly services, we settle the work performed up to the end date and any approved, non-refundable third-party commitments. Any notice period is stated in the proposal.
  • We add only approved third-party costs that cannot be recovered, then deduct every paid invoice and advance payment. There is one final settlement — never a double charge.
  • We hand over everything that has been signed off and paid for — in the formats described in the proposal.

If we withdraw

We do this exceptionally and after prior notice giving a reasonable additional deadline — where essential cooperation is missing, payment is more than 30 days overdue, or delivery would require us to act unlawfully or against third-party rights. We then settle the work performed, approved third-party costs and any other amounts due under the law or the proposal, crediting all earlier payments.

These Terms are intended solely for professional B2B engagements. If you order privately, or as a sole trader where the contract is not professional in character, tell us before accepting the proposal — you will receive separate terms and the required consumer information.

Part IIIScope, limits and liability
12

What we guarantee, and what we do not

We guarantee the quality of the work: that the site will match the approved design and specification, work correctly on supported browsers and be delivered to the agreed technical standards. We are responsible for that scope on the terms set out below.

What we do not guarantee are things that depend on factors outside the project:

  • Google rankings, traffic, enquiry volume or sales. We do solid technical SEO and optimisation — but results are decided by the algorithm, your competitors, your content and your marketing budget. Anyone promising you a specific position is not telling you the truth.
  • A specific PageSpeed or Lighthouse score after changes. We measure the score on the version we hand over, on the agreed configuration and hosting. Adding a few marketing scripts, a chat widget and tracking pixels can cost dozens of points — and that is not our defect.
  • The behaviour of third-party services and suppliers. Hosting, domains, payment gateways, APIs, plugins, libraries, SaaS — their availability, pricing, interface changes and end-of-life decisions are outside our control. We react to them; we do not guarantee them.
  • Immunity from attack. Security is a process, not a state. We implement good practice, but continuous protection requires updates, monitoring and backups — that is the scope of a care plan.
  • Compliance with regulations specific to your industry — medical, financial, insurance. We can build them in if we write them into the scope at Discovery.

This is not hedging. It is the only honest version — and a verifiable one, unlike promises with nothing behind them.

13

Digital accessibility

Since 28 June 2025, the Polish Accessibility Act implementing the European Accessibility Act has applied to specified products and services provided to consumers, including e-commerce services. The Act also provides exemptions, including for services offered or provided by micro-enterprises.

In practice that means three things:

  • As standard we design with accessibility in mind: we consider contrast, semantics, keyboard operation and support for alternative text. That craft alone does not amount to audited compliance with a specific statute or standard.
  • Where accessibility is included in the proposal, the technical reference points are EN 301 549 V3.2.1 and WCAG 2.1 AA, or later versions expressly named in the proposal. The proposal also defines the views, functions, content and environments being tested.
  • Assessing the client's legal obligations, a full audit, assistive-technology testing, and the documentation and accessibility information required by Polish law are a separate scope of work. We provide technical assistance, not legal advice on whether the Act applies to the client's business.

If the proposal does not name a standard, testing scope and documentation, we do not promise full regulatory compliance. This is worth agreeing before the start, especially for e-commerce and other consumer services.

14

After launch

A 14-day stabilisation period follows launch: we fix all technical defects free of charge and as a priority.

After that a 12-month warranty applies to the correct operation of the delivered functionality, in an unchanged technical environment. The warranty does not cover:

  • Consequences of changes made by you or third parties to code, content, plugins or server configuration.
  • Outages and changes on the side of third-party suppliers, and the effects of missing updates where you have no care plan.
  • Moving the site to hosting configured differently from what was agreed.
  • Damage resulting from an attack where our recommended safeguards were not implemented.

In business-to-business relationships the warranty replaces the statutory implied warranty, which we exclude under Art. 558 § 1 of the Polish Civil Code. We prefer a clear, documented scope of support to a general provision that each side reads differently.

Ongoing changes after launch — new pages, content updates, new features — are delivered in one of two modes:

Care plan
A fixed pool of hours each month, priority support, monitoring, backups and updates. The cheapest way to keep developing the site.
Hourly billing
Individual jobs at the rate from the proposal, queued behind care-plan clients.

Domain, hosting and maintenance

Client infrastructure
The domain and hosting account sit on your side, while AERIX LABS receives the access needed for deployment and the agreed maintenance.
AERIX-managed hosting
The domain remains yours, while we provide and administer the infrastructure, deployments and agreed care as an ongoing service.

Where the proposal includes hosting managed by AERIX LABS, it may run on our technical account or shared infrastructure and may use third-party providers. The proposal defines the fee and billing period, service parameters, administration, monitoring, backups, updates and support included, any SLA, notice period and migration rules. The client remains the owner of the domain, content, data and rights in paid deliverables, but does not acquire rights to our account, shared infrastructure or administration tools. Once the service ends and outstanding amounts are settled, we provide the agreed project export and client-owned access; migration, configuration of new infrastructure and assistance outside the proposal are charged separately. We do not guarantee uninterrupted availability or a specific SLA unless the proposal expressly provides one.

We keep project files and working copies for 12 months from handover. After that we do not guarantee their availability — which is why we give you the complete set of materials at the end of the project.

15

Liability

We stand behind our work and do not dodge it. We do, however, set a proportion between the project price and the scale of risk — without it no studio could take on an e-commerce project at all.

  • We are liable for actual loss that is a normal consequence of our conduct. AERIX LABS' aggregate liability for all claims relating to a project is capped at twice the net fee stated for that project.
  • To the fullest extent permitted by law, we are not liable for lost profits, lost revenue, loss of data, or indirect and consequential damage.
  • Third-party rights claims are handled under the procedure in “Copyright and portfolio” and fall within the same aggregate liability cap.
  • The limitations do not apply to damage caused intentionally or any other case where limiting liability is prohibited by law — Art. 473 § 2 of the Polish Civil Code does not permit liability for intentional damage to be excluded.
  • Outside a care plan, backups are your responsibility. We will tell you how to run them; we do not run them for you without an agreement.

If your project carries risk beyond that scale — high transaction volume, sensitive data, business-critical integrations — say so at Discovery. We will then agree a higher cap and a matching scope of testing. It is negotiable; it simply has to be priced.

Part IVRights, data and formalities
16

Copyright and portfolio

We transfer the economic copyright in deliverables created specifically for you once the full fee is paid, under a separate agreement specifying the fields of exploitation. The transfer does not cover our background tools or third-party elements described below.

Why a separate signed document when everything else is handled by email? Because the Polish Copyright Act requires written form on pain of nullity for a transfer of rights (Art. 53). A transfer confirmed only by email simply does not work — and you would be the one losing out. So we sign a short agreement: by hand or with a qualified electronic signature.

  • We transfer the rights across every field of exploitation relevant to using the site, together with the right to exercise derivative rights — that is, to modify and develop the project without asking us.
  • Until payment is complete you hold a licence to use the deliverables for sign-off and testing. It lapses if the fee is not paid.
  • Our internal tooling stays ours — the components, libraries, project scaffolding and design system we use across many projects. You receive a perpetual, royalty-free non-exclusive licence to them for this project. This restricts nothing about your site; it only means we are not selling you our own workshop on an exclusive basis.
  • Third-party elements — open-source libraries, fonts, stock photography, plugins and SaaS — run on their own licences. We list them in the proposal.
  • Where an employee or subcontractor co-creates a deliverable, before transferring rights to the client we secure the rights or licences required to perform the contract, in the form required by law.

If a third party brings a claim

  • You notify us without delay, do not admit the claim without our consent, and allow us to participate in the defence and settlement discussions.
  • Where the claim concerns a deliverable created by AERIX LABS, at our choice and cost we obtain the required right, modify the element or replace it with a functionally comparable solution.
  • If none of those options is reasonably available, we refund the portion of the fee allocated to the element that can no longer lawfully be used. Liability remains subject to the aggregate cap set out above.
  • This procedure does not cover client materials, disclosed third-party elements used under their own licences, changes made without us, or use contrary to the proposal or applicable licence terms.

Portfolio and case studies — the default B2B rule

When the project is first made publicly available by the client, the Contractor or with either party's consent, the client grants the Contractor a non-exclusive, royalty-free, worldwide portfolio licence and permission to use the client's name and identifiers for the purposes described below. The licence is granted for the term of the economic copyright; to the extent permitted by mandatory law, the parties exclude ordinary termination of the licence. Transfer of rights in the deliverable, project acceptance, or the end or termination of the engagement does not by itself limit this licence.

  • Materials: the client's name and business name, logo and other identifiers, the project's public URL, screenshots, screen recordings, animations, excerpts, mockups and visualisations of the publicly available deliverable, together with an accurate description of the scope, industry, solutions used and AERIX LABS' role.
  • Channels and purposes: AERIX LABS websites and portfolio, case studies, profiles and social media, proposals, presentations and tenders, the Contractor's advertising and self-promotion, PR activities, trade publications, and award or ranking submissions — in digital and printed form.
  • Fields of exploitation: fixation and reproduction by any digital or printing technique, distribution of copies of promotional materials, public exhibition, display and playback, and making available online so that anyone may access the materials at a place and time of their choosing.
  • Technical adaptations: cropping, scaling, compression, format conversion, placement in a layout or mockup, and adding captions, translations or subtitles — without misleading presentation or distortion of the brand or deliverable.
  • Technical providers: the Contractor may grant sublicences only to the extent necessary to hosting providers, social-media and portfolio platforms, printers, award organisers, publishers and entities carrying out publication or promotion on the Contractor's behalf.

The client represents that it may authorise the uses described above in relation to names, marks, content and other materials it supplies, and identifies any third-party restrictions before supplying them. AERIX LABS may retain and present historical views that accurately reflect the project on the date of publication, even if the client later changes the website, domain or provider.

The licence does not cover source code, credentials, embargoed information or other confidential information, including non-public pricing, budgets, results and business data. Publishing measurable outcomes, a testimonial or a client endorsement requires separate confirmation in documentary form. We publish the image of an identifiable person only after receiving confirmation of the appropriate right or permission; otherwise we omit or anonymise it.

If the project must remain confidential, publication must be delayed until a specified date, or the portfolio scope must be narrower, the exception must be expressly recorded in the contract or proposal before acceptance and identify the affected materials and — for an embargo — its end date. Once the contract is concluded, the licence may be changed only by mutual agreement in documentary form. A later unilateral removal request does not by itself change the licence, subject to mandatory law and the protection of personal data, image rights and third-party rights. The presentation may accurately identify the client as the recipient and AERIX LABS as the contractor, but must not imply an endorsement the client has not given.

This default licence applies only to B2B relationships governed by these Terms. For a consumer or a business client entitled to consumer protection, portfolio publication requires separate, freely given consent, and refusal must not affect performance of the service.

Contractor credit in the footer — the default B2B rule

Unless the proposal expressly states otherwise, the main footer of the publicly available website includes the discreet credit “Digital Experience by AERIX” linked to aerix.pl. The credit may be visually adapted to the client's footer, but remains legible and available on devices where that footer is displayed. This obligation continues while the delivered project remains publicly in use in a form substantially consistent with the result supplied by AERIX LABS.

  • The client does not remove, conceal or modify the credit without prior agreement with the Contractor in documentary form. If the credit disappears following an update or third-party action, the client restores it within 5 business days after receiving notice, unless the parties have agreed an exception.
  • The link is for identification and promotion, not ranking purposes. By default, we qualify it with rel="nofollow"; the client may use rel="sponsored" instead. We do not require a link that passes ranking signals, and changing only this qualification does not require our consent.
  • A no-credit option, including white-label delivery, may be agreed in the proposal or in a later agreement in documentary form. An additional fee applies only where the proposal or agreement states its amount or a method for determining it.
  • The credit does not restrict the client's rights in paid deliverables and does not mean that AERIX LABS remains their owner. It identifies only the Contractor's role in delivering the project.
  • The Contractor may waive the credit and may require it to be changed or removed if the project has been materially altered without the Contractor's involvement or continued attribution could misrepresent the scope of AERIX LABS' work.

Formalities

Short and to the point — the things that have to be written down so there is no doubt in a dispute. We do not bury them in small print, because they concern you as much as the rest.

Contractor and brand
The terms "AERIX LABS", "we", "us" and "Contractor" mean Jakub Potoczny, conducting business as Usługi Informatyczne "nex-IT" Jakub Potoczny, Tax ID (NIP) 5040061950, REGON 382557666, and operating under the AERIX LABS brand. AERIX LABS is a brand, not a separate contracting party.
Status of this document
These Terms are a contract template within the meaning of Art. 384 of the Polish Civil Code and form an integral part of a B2B proposal where they were delivered to the client before the contract was concluded and the proposal expressly refers to them. They bind when that proposal is accepted.
B2B scope
These Terms are intended solely for contracts with businesses where the contract is professional in character for the client. Consumers and sole traders whose contract is not professional in character receive separate terms and consumer information.
Versioning
The version that applies to your project is the one you received with the proposal — its number and date are written into the proposal. Later changes to these Terms do not apply retroactively. We provide the version archive on request.
Order of precedence
Where documents conflict, the order is: contract → proposal → these Terms. Project specifics — scope, schedule, fee and rates — are set by the proposal itself.
Language
This is a translation provided for convenience. In the event of any discrepancy, the Polish version prevails and Polish law governs its interpretation.
Confidentiality
Both parties keep the other's non-public commercial, technical and organisational information confidential for the engagement and 3 years afterwards. Information that constitutes a trade secret remains protected for as long as it retains that character, while credentials and security information remain protected until effectively invalidated or made public by the entitled party. The obligation excludes information lawfully known beforehand, publicly available, independently developed or disclosed as required by law. Presenting public project elements under the portfolio licence does not breach confidentiality; the licence does not, however, permit disclosure of trade secrets or other confidential information.
Personal data
Where a project gives us access to personal data for which you are the controller — forms, user accounts, customer databases, hosting — we conclude a data processing agreement (Art. 28 GDPR) with you as a separate annex. That is a statutory requirement for both parties, not a formality.
How we process your data as a client is described in our Privacy Policy.
AI tools
We use AI-based tools in our work — for research, prototyping and speeding up repetitive tasks. We do not feed them your confidential data or personal data without your explicit consent. We remain responsible for the result, whichever tool produced it.
Subcontractors
We may entrust part of the work to trusted collaborators. We are liable for them as for ourselves within the liability framework of these Terms, remain your sole contracting party and secure the rights needed to deliver the agreed results.
Force majeure
Neither party is liable to the extent that non-performance is caused by an extraordinary event beyond its reasonable control. The affected party gives prompt notice and mitigates the effects, and deadlines move by the period of the event's actual impact. If the obstacle continues for more than 60 days, either party may end the unperformed part of the engagement; we then settle completed work, earlier payments and approved non-refundable third-party costs.
Communication
We treat as effective any message sent to the email addresses given in the proposal, and any item raised in the project tool. A change of address must be notified to the other party.
Governing law and disputes
Polish law applies. We try to resolve disputes in conversation within 14 days. Failing that, in B2B relationships the court with territorial jurisdiction over the Contractor's principal place of business is competent, provided the parties have effectively agreed that jurisdiction in the form required by law; otherwise the general jurisdiction rules apply.
Severability
If any provision proves ineffective, the remainder continues to apply, and the ineffective provision is replaced by the solution closest to its purpose.

These Terms form an integral part of an AERIX LABS B2B proposal where they were attached or effectively delivered before the contract was concluded, and apply once that proposal is accepted. Project specifics — scope, schedule, fee and rates — are set by the proposal itself. Where they differ, the contract and the proposal take precedence.

Have a question about any point? Write to hello@aerix.pl — we would rather clear everything up before the start than during.

AERIX LABS — a brand operated by Usługi Informatyczne “nex-IT” Jakub Potocznyul. Bojowników o Wolność i Demokrację 9/5, 89-410 Więcbork, PolandTax ID (NIP): 5040061950 · REGON: 382557666hello@aerix.pl · +48 515 016 631