At Osapiens, we are looking for a Senior Backend Developer to play a key role in shaping the future of our Business Partner Transparency solutions within the osapiens HUB, an enterprise-grade ESG compliance platform. You will develop and refine our cutting-edge, serverless ecosystem while delivering meaningful solutions for international clients.

What You'll Do

Design, build, and optimize backend features using modern technologies, ensuring scalability and maintainability.
Develop innovative software solutions that automate complex compliance workflows for businesses of all sizes.
Collaborate closely with product managers, designers, and engineers in small, agile squads to define, refine, and implement features.
Ensure high-quality, secure, and efficient code through rigorous reviews, automated testing, and CI/CD practices.
Own the architecture and design of solutions, optimizing for performance, reliability, and user experience.
Contribute to technical strategy and decision-making, identifying opportunities for innovation.
Mentor and support junior developers, fostering a culture of learning and technical excellence.

What We're Looking For

Strong experience in backend development with a focus on Node.js and TypeScript.
Expertise in web services development and integration, such as REST and GraphQL.
Familiarity with Git for version control and collaboration.
A strong product mindset – you think beyond code, considering user experience, business impact, and scalability.
Agile experience – comfortable working in sprints, participating in stand-ups, and iterating quickly.
Excellent communication skills in English (C1).

Nice to Have

German language skills.

Technical Stack

Node.js
TypeScript
REST
GraphQL
Git

Team & Environment

You will work in small, agile squads of 5-7 people, collaborating closely with product managers, designers, and engineers.

Benefits & Compensation

A purpose-driven mission tackling complex sustainability challenges while working alongside global industry pioneers at a fast-growing company.
Room for creativity through collaborative teamwork and an open communication culture.
Flexibility and team bonding with our hybrid work options.
Sustainable mobility options, promoting eco-friendly commuting solutions.
Fun team events and outings with our global teams.
An inspiring working environment in Mannheim.