karriere.at/jobs/ Senior Python Backend Engineer (f/m/d) Impact SaaS About this job Employment type Full Time (Permanent employment), Part Time (Permanent employment) Salary from 4,000 EUR monthly Seniority level Professional Experience Work model Hybrid Place of work Wien 1. Bezirk (Innere Stadt) Field of work IT, Data Processing Unfilled vacancies 1 vacancy unfilled for this position About the company Employer Formunauts GmbH Number of employees 31 - 50 employees Locations Wien 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, Greenpeace and many more. In short: We build technology that enables real-world impact. Your Role As a Formunaut you'll build and pilot core technologies of our Donation SaaS platform, including mission-critical services our fundraisers rely on daily. You'll own the whole software development cycle and help shape how a small, senior team ships software. Solve genuinely hard problems in the fundraising universe: from APIs that hold up in the field, to data processing and analysis surfacing vital information, and beyond What You'll Do Build and ship new features across our SaaS Platform using modern approaches to backend development Build the services and APIs our platform needs and collaborate on data flows with our data teams Keep our platform and deployments stable and the quality high with automated testing Share your expertise in code reviews, giving and receiving constructive feedback What You Bring We're looking for a highly skilled backend developer with proven, hands-on expertise with modern web framworks (e.g. Django REST Framework, FastAPI etc.) A proactive, collaborative mindset and a strong curiosity about AI technologies Experience building and shipping backends in production, with knowledge about web application development A track record of designing, building, and consuming clean, well-documented REST APIs Hands-on experience with Celery for async and background workloads Comfort with Docker and containerized deployments Working knowledge of CI/CD (GitHub Actions) and modern build tooling Familiarity with monitoring and observability tools, and the instinct to look at performance before it becomes a problem A testing mindset: unit tests, integration tests, and E2E tests are part of how you ship, not an afterthought Bonus skill: a solid taste in bad music for the perfect sprint song Our Engineering Culture We work in a team with a strong sense of ownership. We value clean code, thoughtful architecture and pragmatic solutions over over-engineering. We take our work seriously because it matters - but we don't take ourselves too seriously. Trust, openness and mutual respect are core to how we collaborate, and we believe that great software is built by teams that enjoy working together. What We Offer Pushing what web applications are capable of, for a good cause with real impact: our services help to secure funding for the world's biggest charities such as Amnesty International, Greenpeace, Save the Children, Doctors without borders and many more. Join a focused team (4 backend engineers working closely with 4 frontend engineers, a PM, and a UX designer) applying an agile development process A lot of room for your ideas this is a small, senior team, not a large org where good ideas get lost The salary range listed reflects Austria's legal minimum disclosure requirement. The actual compensation is based on your experience, and we are happy to discuss specifics early in the process We place great importance on a fair and inclusive work environment built on trust, mutual respect, and collaboration. Diversity is a key factor in our success. That's why we foster a team that brings together different backgrounds, perspectives, and talents. Time and space for technical quality, refactoring and sustainable solutions Details about this job Full Time (Permanent employment) 38,5 hours Part Time (Permanent employment) 30 - 38,25 hours Place of work Wien 1. Bezirk (Innere Stadt) Must-have skills Python Django and Django REST framework or similar Docker AWS Required languages English B2 Nice-to-have languages German B2 Details about this job Full Time (Permanent employment) 38,5 hours Part Time (Permanent employment) 30 - 38,25 hours Place of work Wien 1. Bezirk (Innere Stadt) Must-have skills Python Django and Django REST framework or similar Docker AWS Required languages English B2 Nice-to-have languages German B2 Salary The actual salary depends on your qualifications and experience and starts at 4000 EUR gross per month (on a 38.5 hour basis). The salary is paid 14 times per year. 4,000 EUR All infos regarding your application Required application documents: Résumé Contact person Nadja Steinböck People & Culture 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.