Senior Backend Engineer (f/m/d)

We are Formunauts – a fast-growing SaaS company with a clear mission:

We support more than 100 charities in Europe and Latin America in achieving their goals. Our clients include Amnesty International, Doctors Without Borders, WWF and Greenpeace.

Since 2014, our award-winning software has helped make fundraising campaigns more efficient, increasing the funds available for meaningful projects. Since 2020, we have been operating the world’s first marketplace for face-to-face fundraising , opening up new potential for organizations and social impact startups.

In short: We build technology that enables real-world impact.

Your Role

We are looking for a Senior Backend Engineer who enjoys taking ownership, thinking beyond individual tickets and actively shaping a growing platform.

In our environment, backend engineering means more than implementation. You will be involved in technical decision-making, architectural evolution and improving how we build and run our systems.

What You’ll Do

• Drive the further development of our backend systems and services

• Take part in architectural decisions and backlog prioritization

• Refactor and improve existing codebases, reducing technical debt

• Build and enhance APIs to make our platform more accessible and scalable

• Automate internal processes to support business teams and customers

• Take shared ownership of DevOps topics , including deployment, monitoring and reliability

• Orchestrate Docker containers for stable deployments on AWS

• Build and maintain automated deployment pipelines (e.g. Drone.io, Cypress)

• Create and maintain clean, sustainable documentation

What You Bring

• Strong experience with **backend development in a production environment

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• In-depth understanding of **Django and Django REST framework or similar

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• Python proficiency (must-have)

• Hands-on experience with DevOps practices , including CI/CD, containerization and cloud environments

• Experience with Docker and AWS ; OpenSearch and monitoring tools are a plus

• A pragmatic, quality-driven engineering mindset with a sense of ownership

• Ability to balance code quality, delivery speed and system reliability

• Enjoyment of working in a collaborative team that shares responsibility and impact

• Bonus skill: a surprisingly solid taste in bad music for the perfect sprint song

If you are excited about building scalable backend systems that actually make a difference, and you want to grow together with a purpose-driven team, we’d love to hear from you.

The actual salary depends on your qualifications and experience and is between 3,900 € and 5,000 € gross per month (on a 38.5 hour basis). The salary is paid 14 times per year.​