Senior Backend Developer (Node.js)

Department: Business Partner Transparency

Employment Type: Permanent - Full Time

Location: Madrid


Description

As a Senior Backend Developer, you’ll play a key role in shaping the future of Business Partner Transparency (BPT) within our osapiens HUB. This enterprise-grade platform helps companies comply with critical ESG regulations like: 
  • The German Supply Chain Due Diligence Act (LkSG) – ensuring suppliers uphold human rights and environmental standards. 
  • The Whistleblower Directive – providing secure, anonymous reporting channels. 
  • The Corporate Sustainability Due Diligence Directive (CSDDD) – upcoming EU-wide sustainability compliance. 
Our osapiens HUB is a modern, enterprise-grade development platform that enables businesses to build powerful applications without worrying about infrastructure, scaling, or failover. You’ll help develop and refine this cutting-edge, serverless ecosystem while delivering meaningful solutions for international clients. 

We embrace a hybrid work model, with three days a week in the office, ensuring the perfect balance between in-person collaboration and remote flexibility. 

Key Responsibilities

  • Design, build, and optimize Backend features using modern technologies, ensuring scalability and maintainability. 
  • Develop and enhance 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 (5-7 people) to define, refine, and implement features. 
  • Ensure high-quality, secure, and efficient code through rigorous reviews, automated testing, and continuous integration/deployment (CI/CD) practices. 
  • Own the architecture and design of TypeScript-based solutions, optimizing for performance, reliability, and user experience. 
  • Contribute to technical strategy and decision-making, identifying opportunities for innovation and process improvements. 
  • Mentor and support junior developers, fostering a culture of learning and technical excellence within the team. 

Skills, Knowledge and Expertise

  • Strong experience in Backend development with a focus on Node.js & TypeScript. 
  • Expertise in web services development and integration (REST, GraphQL, etc.). 
  • Familiarity with Git for version control and collaboration. 
  • 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. 
  • Any React experience would be a plus
  • Excellent communication skills in English (C1).

Why work at osapiens?

  • A purpose-driven mission with and for global industry pioneers in tackling complex challenges 
  • Room for creativity through collaborative teamwork and an open communication culture 
  • Flexibility and team bonding with our hybrid work options 
  • Fuel for your growth journey, both personally and professionally 
  • Sustainable mobility options, promoting eco-friendly commuting solutions 
  • Fun team events and outings with our global teams 
  • Inspiring workspaces in Mannheim and beyond 

Location

Madrid

Job Overview
Job Posted:
1 week ago
Job Expires:
Job Type
Full Time

Share This Job: