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Backend Developer (Python and FastAPI) - Europe at Jobgether. This position is posted by Jobgether on behalf of a partner company. We are currently looking for a . Backend Developer (Python and FastAPI). in . Europe. .. In this role, you’ll work as part of a small, highly skilled remote team building scalable backend systems that connect with blockchain infrastructure and wallet integrations. You’ll have a direct impact on designing and delivering efficient backend architectures while ensuring performance, security, and reliability. The environment is fast-paced and collaborative, offering autonomy and technical challenges for developers passionate about clean code and modern backend frameworks. This position is full-time, long-term, and remote, open exclusively to candidates based in Europe.. . Accountabilities. Design, develop, and maintain scalable backend services in . Python (FastAPI). for high-performance applications.. Create and integrate . RESTful APIs. that interact with blockchain networks and smart contracts using . Web3.js. or . Ethers.js. .. Build and manage . wallet integrations. to support authentication and transaction workflows.. Collaborate closely with the frontend team to deliver seamless and reliable user experiences.. Manage and optimize . PostgreSQL. , . MongoDB. , and . Redis. environments for performance and scalability.. Apply best practices in backend development to ensure system reliability, data security, and efficient operations.. . Proven, recent hands-on experience developing production-level services with . Python. and . FastAPI. (core requirement).. Strong understanding of . SQLAlchemy. , . PostgreSQL. , and . MongoDB. .. Solid working knowledge of . Redis. for caching, queues, or data pipelines.. Good grasp of . API design. , . backend architecture. , and . database optimization. .. Familiarity with . Docker. , . CI/CD pipelines. , and . cloud environments. (a strong plus).. Must be . based in Europe. for team collaboration and time zone alignment.. Strong communication and teamwork skills, with a proactive and solution-oriented mindset.. . Company Location: Portugal.