Payments and billing
Payments matched to invoices and account access, with a check so a repeated webhook is applied only once.
Software · API Services
Fast and secure APIs for your automation needs
Custom backends and integrations with clear contracts, predictable behavior, and the engineering support needed to run them in production.
Describe your projectWe reply within one business day, no commitment required.
APIs and integrations
We build and maintain APIs, backends and integrations in Go, Rust or Node.js, from user access to webhooks.
Agreed before we build
Data, permissions, error handling and expected traffic are agreed first. Testing, monitoring and docs are in the quote.
From €500/project
From $500/project
Final scope and price agreed before work starts.
Keep your systems in sync
Every connection has one source of truth and clear rules.
CRM and support
Contacts, account details and ticket activity kept aligned, so nobody copies data between tools by hand.
Orders and stock
Orders, stock levels and delivery updates, with rules for conflicting changes and for records someone must check by hand.
Partner and internal APIs
Selected features opened to another app or a partner, with documented formats and access limited to the agreed data.
Reliable when requests fail
Outages, rate limits and duplicate events are planned for.
Retries without duplicates
We decide which actions can be safely repeated and spot duplicate events, so a retry does not bill twice. Late events are reconciled within provider limits.
Checked requests, limited access
Incoming webhooks must carry a valid signature, keys and passwords stay out of the code, and each connected app gets only the access it needs.
Errors you can trace
Each failure is logged with enough context to investigate, without exposing personal data. Logging, alerts and recovery steps are part of the scope.
Technical consulting
We review integrations and architecture, find single points of failure, and fix critical faults others couldn’t trace.
How we work
Written goals, updates, a technical report and a stakeholder summary. We recommend a fix or build it, backed by 20+ years of experience.
What you receive
Everything agreed, built and tested, in writing.
- Written scopeResponsibilities, assumptions and acceptance criteria, agreed up front.
- Agreed interfaceRequests, data formats, permissions and error handling, settled before building.
- Working serviceThe backend or connector, released in a planned deployment.
- Test resultsNormal use, invalid data, repeated events and outages, checked against the criteria.
- API documentationEvery request, field and error, described for the developers who use it.
- Operations notesConfiguration, logging, alerts and the recovery steps for each planned failure.
API project questions
What to prepare and what we agree first.
- Can you work on an existing API?
- Yes: improving a current service, adding a connector, or replacing an old interface, including older XML systems. We first review how it behaves today and what must stay compatible.
- What do you need to get started?
- API documentation, sample data and a description of the workflow. Test accounts or limited credentials are shared through a secure channel we agree on.
- How do you estimate a project?
- From the systems involved, their data formats and quality, provider limits, testing and deployment. The written quote states the scope and assumptions before work starts.
- What happens after launch?
- Maintenance, monitoring and later improvements can be scoped to your needs. Responsibilities and any response commitments are agreed in writing, not assumed.