Work with us

Customisation, consulting, sponsorship

When the apps need to fit your processes, auditors, or collective agreements — or you want to co-fund a feature — commission us. The code stays with you under the AGPL. Annual support with an hour pack: Check Partner. Other custom software and studio work: software-by-design.de (opens in new tab).

Consulting & requirements engineering

Hourly or fixed-price engagement

Before development: clarify processes, involve stakeholders, deliver a specification — or we implement it.
- Stakeholder workshops & structured user research
- Functional and non-functional requirements documentation
- Architecture review & build-vs-buy analysis
- Procurement-grade specifications for public-sector funding
Schedule a discovery call
Customise for your organisation

Project-based · You retain the code

ArbeitszeitCheck, DutyCheck, ProjectCheck, or BudgetCheck with your fields, roles, exports, integrations, and compliance edge cases.
- Custom workflows, roles, and validation rules
- DATEV, Lexware, SAP, and custom API integrations
- Industry- and collective-agreement-specific time-tracking logic
- Reports that make sense in your review process
Request a project quote
Custom platforms & web applications

Project-based · studio website

Portals, back-office tools, and web apps beyond the Nextcloud suite — details on the studio site.
- Digital platforms for municipalities & multi-stakeholder networks
- Internal operations and back-office systems
- Accessible, standards-compliant web applications
Open software-by-design.de
Feature sponsorship & ongoing care

Sponsorship or maintenance agreement

Co-fund features ahead of the public backlog — results under the AGPL. Planned annual support via Check Partner.
- Sponsored features under a written order
- Response targets via Check Partner (not 24/7)
- Help with updates and hardening
- GitHub Sponsors for open ongoing development
Happy to discuss
GitHub Sponsors (opens in new tab)

Engagement models

Discovery sprint
One to three weeks: understand the problem, talk to stakeholders, deliver a costed plan — useful for procurement and sign-off.
Fixed-price build
Scope, price, and milestones fixed when requirements are written down.
Time & materials, capped
Hourly billing with a cost ceiling — for moving integrations or longer collaboration.
Monthly care package
A fixed monthly hour pack for updates, fixes, and questions. Renewable, cancellable with notice.