osapiens

Senior Full-Stack Developer – NodeJS/ReactJS

osapiens

full-time

Posted on:

Location Type: Hybrid

Location: Mannheim • 🇩🇪 Germany

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Job Level

Senior

Tech Stack

GraphQLJavaScriptNode.jsReactTypeScript

About the role

  • As a Senior Full-Stack 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.
  • 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.

Requirements

  • Strong experience in full-stack development with a focus on **Node.js (Mainly),** ReactJS, JavaScript, and **TypeScript (Mandatory)**
  • 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.
  • Excellent communication skills in English (C1). German is a bonus (B1+)
Benefits
  • 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

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
Node.jsReactJSJavaScriptTypeScriptweb services developmentRESTGraphQLGitAgile
Soft skills
product mindsetcommunication skills