Senior Software Engineer Zagreb | Hybrid
F24 is Europe's leading crisis management SaaS platform, trusted by governments, airlines, banks, and Fortune 500s in over 100 countries. When a major incident unfolds, our software is the system people rely on. Our Zagreb Tech Centre is already up and running. Wave 1 of our engineering team is in place, and we're now expanding into Wave 2, bringing in more senior engineers to accelerate the work already underway.
Why F24?
You'll be working on technology that genuinely matters.
The Services team is the result of merging two established backend teams into one — responsible for roughly 10 shared services that run across every F24 product. We're talking high-performance event logging, billing, unified data object storage, single sign-on, user services, asset services, and more. These aren't isolated features; they're the foundational layer that every product in the portfolio depends on.
The work is technically meaty: horizontally scalable microservices, event-driven architecture with Kafka and RabbitMQ, multi-database design with a real focus on query performance, and streaming services built for scale. You'll also be working directly alongside F24's AI engineers on RAG pipelines, MCP servers, and LLM streaming integrations — making this a genuinely modern Python environment.
Senior Software Engineer (all genders)
Zagreb / HR
Full-time
Permanent employee
35,000 - 43,420 € al año
About the job
You
This is an opportunity to:
✔️ Build shared services used by 5,500+ organisations worldwide
✔️ Work on high-performance, event-driven systems where throughput and reliability are non-negotiable
✔️ Influence architecture across a portfolio of products, not just a single codebase
✔️ Join a growing engineering hub with significant investment and long-term growth plans
✔️ Collaborate with AI engineers, DevOps, and Architecture teams across Europe
✔️ Help build the secure, scalable foundation that F24's future product suite is built on
What You'll Bring:
✔️ Strong Python backend experience, ideally with FastAPI and async patterns
✔️ A background working in product SaaS environments at scale
✔️ Familiarity with distributed systems, message brokers, and cloud-native practices
✔️ Hands-on exposure to AI tools or ML integration
✔️ A collaborative mindset and a desire to solve complex technical challenges
Tech Stack: Python | FastAPI | MongoDB | MariaDB | RabbitMQ | Kafka | Redis | Docker | Kubernetes | WebSockets | OAuth2 | GitLab CI | Microservices
✔️ Build shared services used by 5,500+ organisations worldwide
✔️ Work on high-performance, event-driven systems where throughput and reliability are non-negotiable
✔️ Influence architecture across a portfolio of products, not just a single codebase
✔️ Join a growing engineering hub with significant investment and long-term growth plans
✔️ Collaborate with AI engineers, DevOps, and Architecture teams across Europe
✔️ Help build the secure, scalable foundation that F24's future product suite is built on
What You'll Bring:
✔️ Strong Python backend experience, ideally with FastAPI and async patterns
✔️ A background working in product SaaS environments at scale
✔️ Familiarity with distributed systems, message brokers, and cloud-native practices
✔️ Hands-on exposure to AI tools or ML integration
✔️ A collaborative mindset and a desire to solve complex technical challenges
Tech Stack: Python | FastAPI | MongoDB | MariaDB | RabbitMQ | Kafka | Redis | Docker | Kubernetes | WebSockets | OAuth2 | GitLab CI | Microservices
¿Quiénes somos?
What we do:
F24 is the leading software-as-a-service (SaaS) provider for alerting and crisis management for sensitive and critical communications in Europe. We are able to offer a highly innovative solution and help customers all over the world to successfully and efficiently manage incidents, emergencies and critical situations.
Founded in 2000, F24 AG is headquartered in Munich, Germany, and supports companies and organisations in more than 100 countries around the globe with its subsidiaries in Zurich, London, Trondheim, Paris, Luxembourg-City, Madrid, Brussels and Munich along with its branches in Mexico City, Santiago de Chile, Vienna and Dubai, Milan. F24’s customers come from various sectors like energy, healthcare & pharmaceuticals, aviation, IT & telecommunication and public organisations.
Find out more about working at F24 here.
Good reasons to work at F24:
F24 is the leading software-as-a-service (SaaS) provider for alerting and crisis management for sensitive and critical communications in Europe. We are able to offer a highly innovative solution and help customers all over the world to successfully and efficiently manage incidents, emergencies and critical situations.
Founded in 2000, F24 AG is headquartered in Munich, Germany, and supports companies and organisations in more than 100 countries around the globe with its subsidiaries in Zurich, London, Trondheim, Paris, Luxembourg-City, Madrid, Brussels and Munich along with its branches in Mexico City, Santiago de Chile, Vienna and Dubai, Milan. F24’s customers come from various sectors like energy, healthcare & pharmaceuticals, aviation, IT & telecommunication and public organisations.
Find out more about working at F24 here.
Good reasons to work at F24:
- Have a tangible impact! Work in an agile environment where you make an important contribution to the success of our customers and the future of our company.
- Become part of our established company with an inspiring culture, flat hierarchies and our open, honest, innovative and supportive team!
- Grow with us: We are a company on the road to success, experiencing steady international growth. You have the opportunity to help shape our development.
- Take advantage of our flexible working model: We rely on a combination of presence in our offices and work from home. This way we strengthen our team spirit and at the same time give you the opportunity to achieve the best possible balance between private and professional life.