Senior Software Engineer / BackEnd Developer
Back-end developer with PHP, Symfony, Doctrine; builds and optimizes database systems and services for national and international client projects.
Remote • Kaiserslautern, Germany- Full Time
Jobs for Humanity
30 open rolesLast updated April 24, 2026 at 8:55 PM UTC
All open jobs at Jobs for Humanity
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30 open positions
System- and Database Administrator
Diagnoses and resolves problems, automates where it makes sense, monitors infrastructure, ensures smooth operation.
- On-site • Hamburg, Germany
- Full Time
Customer Success Manager for Kadmos
Owns onboarding, adoption, and account growth while bridging product and customer teams to drive value.
- On-site • Berlin, Germany
- Full Time
- Min. 3 YOE
BackEnd Developer to Team Personalization for Blocket
Backend developer to build ML-enabled personalization features that recommend ads and products for Blocket users.
Remote • Sweden- Full Time
- Min. 3 YOE
BackEnd Developer to Team Communications for Blocket
Backend developer focusing on team communications, building secure chat and notifications for Blocket’s large user base.
- Remote • Stockholm, Sweden
- Full Time
- Min. 4 YOE
Finance Manager
Coordinate day-to-day accounting activities and build finance function to scale at Kadmos.
- Remote • Germany
- Full Time
- Min. 3 YOE
BackEnd Wed Developer for Schirra-IT
Develop and maintain backend solutions using PHP/Symfony, integrating databases, and mentoring developers.
- Remote • Germany
- Full Time
- Min. 3 YOE
System Administrator
Maintains Debian-based infrastructure, deployments, and security; collaborates with developers and responds to on-call incidents.
- Remote • Germany
- Full Time
Senior Business Development Manager
Identify profitable business opportunities and lead negotiations to drive international revenue growth in mobile Ad-Tech for AddApptr.
On-site • Warsaw, Poland- Full Time
- Min. 3 YOE
Senior Data Analyst
Lead BI initiatives with strong SQL, Metabase, and BigQuery to enable data-driven decisions.
- Remote • Germany
- Full Time
- Min. 5 YOE
Sales Operations Administrator
Owns day-to-day sales operations, supports diary management, events, and cross‑department communication.
- Remote • Germany
- Full Time
- Min. 2 YOE
Tech Lead BackEnd
Own backend, lead team, and drive independence in a high-growth fintech backend platform.
- Remote • Germany
- Full Time
- Min. 3 YOE
Senior BackEnd Engineer
Senior backend engineer ownership of micro-service landscapes, architecture, and performance-focused development in a high-growth fintech environment.
- Remote • Germany
- Full Time
- Min. 5 YOE
Key Account Manager for AddApptr GmbH
Manages top App publishers, monitors and optimizes advertising revenues, coordinates with networks and internal teams to drive client success.
Remote • France- Full Time
- Min. 1 YOE
Web Developer to Team Display & Integrations for Blocket
Frontend web developer to lead integration and ad-product features with Blocket’s Display & Integrations team.
- Remote • Sweden
- Full Time
- Min. 3 YOE
BackEnd Developer
Designs, implements, tests, and maintains backend systems with Linux, PHP, MySQL/MariaDB, Nginx/Apache, optimizing performance.
- On-site • Hamburg, Germany
- Full Time
- Min. 3 YOE
Product Growth Marketing Manager for UA Talents
Drive growth marketing experiments to scale talent acquisition and optimise conversion funnels.
- Remote • Germany
- Full Time
- Min. 3 YOE
System Administrator
Maintain Debian Linux server setup, deployment, and monitoring to ensure secure, efficient IT infrastructure.
- Remote • Germany
- Full Time
- Min. 3 YOE
Fullstack Developer
Full-stack software developer implementing end-to-end solutions with React/Angular and Node.js, driving feature delivery and code quality.
- Remote • Germany
- Full Time
- Min. 3 YOE
Mobile Engineering Intern
Develop and enhance mobile features with React Native, writing reusable code for a fintech app.
- Remote • Germany
- Full Time
- Min. 3 YOE
Senior Full-Stack Web Developer
Leads full-stack development across back-end and front-end, guiding projects from conception to deployment.
- Remote • Germany
- Full Time
Typo3 Developer
TYPO3 developer responsible for backend/frontend implementation, training clients, and mentoring peers.
- Remote • Germany
- Full Time
- Min. 5 YOE
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Provide software development and DevOps capabilities to scale PowerUs platforms and delivery.
Remote • Vinnytsia, Vinnytsia Oblast, Ukra...- Full Time
BackEnd Developer to Team Motor for Blocket
Backend developer with 4+ years experience to lead new features in a cross functional team delivering event-driven microservices.
- Remote • Stockholm, Sweden
- Full Time
- Min. 4 YOE
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