> Markdown version of [/jobs/ext/1549070-director-of-api-integrations-crypto-blockchain](https://www.wearedevelopers.com/jobs/ext/1549070-director-of-api-integrations-crypto-blockchain). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Director of API Integrations (Crypto / Blockchain) - **Company:** Caiz - **Location:** Frankfurt am Main, Germany (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Authentication Protocols, Data Structures, DevOps, Online Banking, Middleware, OAuth, Openid Connect, Blockchain, Swagger, Software Engineering, Systems Integration, Management of Software Versions, Web Services, WebSocket, Openapi, Postman, Software Security, Apigee, Backend, Information Technology, Graphql, Web3.js, Api Design, Api Gateway, Restful APIs, Webhooks, Api Management, Microservices - **Published:** July 19, 2026 - **Apply:** https://www.adzuna.de/details/5804549265 ## About the Role * 8+ years of experience in backend development, API architecture, and systems integration. * 3+ years in a leadership or director-level role managing API engineering or integration teams. * Proven experience designing and deploying APIs in fintech, crypto, or blockchain environments. * Proficient in RESTful API design, OpenAPI/Swagger, GraphQL (a plus), Webhooks, and microservices. * Strong knowledge of API management platforms (e.g., Kong, Postman, Apigee, AWS API Gateway). * Experience with crypto protocols, Web3 integrations, and blockchain data structures. * Familiarity with middleware, authentication protocols (OAuth2, OpenID Connect), and security practices. Preferred Skills * Experience integrating with banking systems (Open Banking, PSD2 APIs). * Understanding of Layer 1 and Layer 2 blockchain APIs and Web3 frameworks (e.g., Web3.js, Ethers.js). * Familiarity with Sharia-compliant finance or Islamic fintech is a strong plus. * Track record of leading API strategies for global, multi-region tech platforms. Level of studies: Bachelor's or Master's degree in Computer Science, Software Engineering, or a related technical field. Language Requirements: Fluent in English ## Description We are seeking a visionary and hands-on Director of API Integrations to lead the strategy, development, and execution of API integration initiatives across Caiz's blockchain infrastructure and ecosystem. This role is critical in ensuring our platforms integrate seamlessly with partners, financial systems, third-party tools, and decentralized applications. You will oversee the full lifecycle of API integrations - from architecture and security to documentation and partner onboarding - and lead a cross-functional team of engineers to deliver robust and scalable API solutions., * Define and execute the API integration strategy aligned with Caiz's ecosystem goals, including banking partners, payment processors, DeFi platforms, wallets, and identity providers. * Lead the design, development, and maintenance of secure, scalable, and well-documented RESTful and WebSocket APIs. * Manage end-to-end API lifecycle: discovery, onboarding, versioning, governance, and retirement. * Collaborate with product, DevOps, and backend teams to ensure seamless cross-platform interoperability. * Establish and enforce API security standards, rate limits, authentication (OAuth2, JWT), and data privacy protocols. * Identify integration opportunities and work closely with business development and partnership teams to support technical onboarding of new partners. * Ensure high reliability, performance, and uptime of all API services through testing, monitoring, and SLAs. * Stay current with industry trends, API-first strategies, and new technologies to continuously improve integration capabilities. ## Related Videos - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) ## Related Articles - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)