Freelance Software Engineer (Full Stack: Node.js, React, TypeScript)
Atmen Solutions GmbH🚀 About Atmen
Atmen is a Munich-based RegTech startup revolutionising green certification. Our SaaS platform helps energy-intensive industries (fuels, chemicals, materials) automate compliance and certification—cutting down time by up to 90%.
We replace today's manual, costly, and unpredictable certification processes with continuous, technology-driven verification. Our mission? Making sustainable production simple, scalable, and cost-effective.
**
About the Role**
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.
Tasks
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.
Requirements
🏆 Must-haves
- 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.
**
🙏 Nice-to-haves**
- Experience designing and bu
Opens the company's application page
Listed via
Arbeitnow
arbeitnow.com
Similar roles
Design & Tech
Related reads from TCHNX
The Quiet Revolution in Local-First Software
As major platforms face outages and data breaches, a new generation of developers is building applications that prioritise local data storage and peer-to-peer sync, challenging the cloud-first orthodoxy that's dominated tech for two decades.
The Quiet Revolution in Edge AI: Why Your Next Computer Might Not Need the Cloud
As neural processing units become standard in consumer devices, we're witnessing a fundamental shift in how AI applications work. Local processing is no longer a fallback; it's becoming the preferred architecture.
The Rise of AI-Assisted Code Generation 2: Are Developers Becoming Prompt Engineers?
As AI coding assistants reshape software development, the industry grapples with a fundamental question: is writing code giving way to writing prompts? We examine how London's tech scene is adapting to this seismic shift.