Atmen Solutions GmbH

Role Description We’re looking for a Software Engineer to help build and deliver customer-facing solutions by integrating our core platform with a wide range of third-party systems and APIs. This role combines full-stack application development with systems integration, requiring someone who enjoys solving complex technical challenges and turning customer requirements into reliable, scalable software. You’ll work closely with product managers, customer success, and engineering teams to design, develop, and deploy solutions that connect our platform with our customers’ technology ecosystems. What You’ll Do - Design, build, and maintain full-stack applications using Node.js, React, TypeScript, NestJS, and PostgreSQL. - Develop and maintain integrations with external APIs, including REST and other web service technologies. - Extend and customize our core platform to meet customer-specific business requirements. - Design clean, maintainable, and scalable backend services and frontend applications. - Collaborate with customers and internal stakeholders to understand integration requirements and translate them into technical solutions. - Troubleshoot integration issues across distributed systems and work with third-party vendors when necessary. - Write well-tested, production-ready code with a focus on reliability, performance, and security. - Participate in code reviews, architecture discussions, and continuous improvement initiatives. - Contribute to documentation for integrations, APIs, and internal development processes. Qualifications - Strong experience with TypeScript. - Professional experience developing backend services with Node.js and NestJS. - Experience building modern frontend applications with React. - Solid understanding of PostgreSQL and relational database design. - Experience consuming and integrating external APIs. - Good understanding of RESTful API design and HTTP protocols. - Experience with Git and collaborative software development practices. - Strong problem-solving skills and the ability to work independently. - Excellent communication skills and the ability to work directly with both technical and non-technical stakeholders. Requirements - Availability: Full-Time Freelancer - Remote location, preferably in the European Union - Fluency in English Benefits - Asynchronous first: We minimise unnecessary meetings and document everything in Notion. - Focus time & deep work: Meetings-free mornings + 1 in-office Team Day per week. - Fast-paced, iterative development: We push to main frequently and release several times per week. - Strong testing culture: Pragmatic test-driven development (TDD), heavy use of E2E tests. - Impact: Be part of a small, high-performing team driving real-world sustainability impact. - Hybrid work and central Munich offices: work from the office and from home. - Growth: Join an early-stage startup with significant ownership and career growth potential. - Cutting-edge tech: Work on exciting challenges in automation, AI, and compliance tech.