Startup-grade innovation for Germany's digital capital. We design and build robust APIs that power modern applications. From RESTful services to GraphQL schemas, our APIs are documented, versioned, rate-limited, and built for scale with comprehensive monitoring and security.
Berlin has one of Europe's largest startup scenes, with fintech companies such as N26 and Trade Republic based in the city. German buyers expect GDPR compliance, an Impressum on every commercial site, and accessibility under the law implementing the European Accessibility Act.
Multilingual team serving Berlin's vibrant startup ecosystem and Germany's enterprise market. DSGVO expertise and BaFin compliance for FinTech projects.
Factory Berlin: Kreuzberg, Mitte, Adlershof
Every API Development project in Berlin is built with full compliance to local and international regulatory frameworks.
Every API Development project we deliver in Berlin includes these enterprise-grade features, customized for Berlin-Brandenburg's specific market requirements.
OpenAPI/Swagger specification, resource modeling, and versioning strategy for long-term maintainability.
Schema-first GraphQL APIs with subscriptions, federation, and optimized query resolution.
OAuth 2.0, JWT tokens, API keys, rate limiting, and CORS configuration.
Interactive API documentation with Swagger UI, code examples, and SDK generation.
Request logging, error tracking, performance metrics, and usage analytics dashboards.
Connect with payment processors, CRM systems, social APIs, and cloud services.
We use industry-leading technologies proven at scale by the world's top companies. Our stack is optimized for Berlin-Brandenburg's infrastructure and regulatory requirements.
A proven, transparent development process refined through 100+ successful projects. Every milestone is tracked and communicated in your timezone (Europe/Berlin). Here's an inside look at how we deliver API Development projects.
Every API Development project meets these measurable quality benchmarks before delivery. These aren't aspirational goals — they're contractual guarantees.
Automated unit, integration, and E2E tests cover all critical paths.
Performance, accessibility, best practices, and SEO all score above 90.
Server response time optimized through caching and edge computing.
LCP, FID, and CLS all within Google's recommended thresholds.
Guaranteed uptime with automated failover and disaster recovery.
SSL Labs A+ rating with strict CSP, HSTS, and security headers.
Real results from real clients in the Berlin-Brandenburg market. Each project demonstrates our expertise in API Development with measurable business outcomes.
We apply industry-specific standards and compliance requirements to every API Development project in Berlin-Brandenburg. Here's how we tailor our approach for each sector.
Isolated tenant data with shared infrastructure for cost-efficient scaling.
Stripe integration with usage metering, trials, and revenue recognition.
Progressive onboarding, in-app guides, and time-to-value optimization.
End-to-end encryption, BAA agreements, audit logging, and PHI access controls.
HL7 FHIR integration for seamless data exchange with EHR systems.
Telehealth, appointment scheduling, and patient portal integration.
A/B tested checkout flows, cart recovery, and personalized recommendations.
Touch-optimized shopping with PWA capabilities and offline browsing.
Real-time stock tracking, automated reordering, and multi-warehouse fulfillment.
Here's the specific process we follow for API Development projects, with timelines adjusted for Berlin's market and working patterns.
Resource modeling, endpoint design, authentication strategy, and OpenAPI spec creation.
Implementation with comprehensive error handling, validation, and automated testing.
Interactive docs, SDK generation, load testing, and security audit.
CI/CD pipeline, monitoring setup, and developer onboarding.
Transparent pricing with no hidden fees. All prices are in EUR and include DSGVO (GDPR) & PSD2 compliance.
Average project budget in Berlin: €40,000 – €400,000
3-4 weeks
6-8 weeks
10-14 weeks
Every API Development project includes a comprehensive set of deliverables designed for long-term success in the Berlin market.
We're not just another agency. Here's what sets us apart in the Berlin market.
From startups to Fortune 500s, we've shipped products across FinTech & NeoBank, Mobility & CleanTech, E-Commerce, and more.
Offices and partnerships across 13 cities. Deep understanding of Berlin's regulatory landscape and business culture.
Every project leverages AI where it creates measurable value — from intelligent automation to predictive analytics.
DSGVO (GDPR) & PSD2 compliance built into every project from day one. No shortcuts.
Real-time project dashboards, weekly demos, and direct Slack access to your engineering team.
85% of clients continue working with us after initial project. We grow with your business.
In Berlin, an API is often the product itself. Logistics startups expose shipment tracking, fintechs offer payment and account endpoints, and SaaS companies publish integrations so larger customers can plug them into SAP or Salesforce. The partners on the other side are usually large companies with formal onboarding, which means your documentation, versioning policy and uptime matter as much as the endpoints themselves.
Design choices come first. REST with an OpenAPI specification is the safest default for external partners; GraphQL suits your own front ends; webhooks are expected for events. Authentication should use OAuth 2 or signed keys with rotation. Where personal data passes through, the GDPR asks for purpose limitation and logging, and finance APIs may fall under PSD2 rules for access to payment accounts, which bring their own security standards. If you are unsure whether a regulated activity is involved, get that answered before you build.
The work grows with the number of systems you integrate and how messy their data is. Ask a provider how they test against partner sandboxes, how they handle rate limits and retries, and how breaking changes reach consumers. Ask for a sample of their API documentation. A good API ships with a changelog, a status page and error messages a developer at another company can understand without calling you.
Related project
Beyond Points AI: Building an Autonomous Points-Booking AgentAn AI product with integration work; the client location is not stated in the case study, so it is a topical match rather than a Berlin one.
This is our own list, and we rank ourselves first. The other studios each show an office in or near Berlin on their own website and are worth a call if you are comparing api development providers.
Our pick, for obvious reasons. See the case studies and judge the work for yourself.
Full-service Berlin digital agency for commerce, content management and AI for 25 years.
Builds platform, app and AI solutions for large and midsize companies.
Mobile app development agency building Android, iOS, web and cross-platform apps since 2015.
Berlin development agency building web applications with Elixir, Ruby and React.
Answers to common questions about API Development for Berlin businesses.
Complement your API Development with these related services, all available in Berlin with the same quality standards and compliance guarantees.
We offer API Development across our global network of offices and partnerships. Each location has dedicated expertise in local market requirements and regulatory compliance.
Understanding the return on your API Development investment is critical. Here's how our Berlin clients typically measure success and the results they achieve.
Based on our portfolio of Berlin projects, clients typically see full ROI within 4-8 months of launch. The Berlin-Brandenburg market's strong demand for digital solutions means API Development investments generate measurable returns quickly when executed with the right strategy and technology stack.
Our engineering team follows battle-tested architecture patterns optimized for Berlin-Brandenburg's infrastructure and regulatory requirements.
Every API Development project in Berlin is architected for horizontal scaling with containerized microservices, auto-scaling groups, and CDN-distributed assets.
Security is non-negotiable in Berlin's regulatory environment. We implement defense-in-depth with DSGVO (GDPR) & PSD2 compliance baked into every layer.
We target sub-200ms response times and 90+ Lighthouse scores for all Berlin deployments through multi-layer performance engineering.
Data management in Berlin requires careful attention to DSGVO (GDPR) & PSD2 compliance while maintaining high performance.
From Factory Berlin: Kreuzberg, Mitte, Adlershof startups to FinTech & NeoBank enterprises, our API Development expertise has earned the trust of organizations across Berlin-Brandenburg.
"Frenchy Digital delivered our API Development project on time and exceeded every expectation. Their understanding of the Berlin market and DSGVO (GDPR) & PSD2 compliance saved us months of research."
"What sets Frenchy Digital apart is their technical depth combined with genuine understanding of our business. They didn't just build a solution — they became strategic partners in our digital transformation."
Join 100+ businesses in Berlin-Brandenburg that trust Frenchy Digital for their digital transformation. Get a free consultation and custom project proposal tailored to Berlin's market.