Senior Software Engineer (all genders) at F24

City of Zagreb, , Croatia -

Full Time

Start Date

Immediate

Expiry Date

06 Oct, 26

Salary

48420.0

Posted On

08 Jul, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Node.js, TypeScript, NestJS, NextJS, RabbitMQ, Kafka, Redis, Docker, Kubernetes, WebSockets, OAuth2, GitLab CI, Distributed Systems, Microservices, Event-Driven Architecture, AI Integration

Industry

IT Services and IT Consulting

Description

Your tasks About the job 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 complex: 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. Om jobben 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 Node.js backend experience 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: Node.js | TypeScript | Nest/Next | RabbitMQ | Kafka | Redis | Docker | Kubernetes | WebSockets | OAuth2 | GitLab CI Your future team Contact Kontakt oss About us What we do: F24 is Europe’s leading Software-as-a-Service (SaaS) provider for resilience. More than 5,500 customers worldwide rely on F24’s digital solutions, which support companies and organisations through all areas of resilience. Solutions cover business messaging and service notification, emergency and mass notification, incident and crisis management, as well as governance, risk and compliance. F24 supports customers in virtually every sector ranging from energy, healthcare, industry, finance, IT, tourism and aviation to a wide variety of public organisations. Many years of international experience have made F24 experts in improving resilience with digital solutions. The company was founded in 2000 in Munich, where F24 AG’s head office is still located. Today, F24 supports companies and organisations in more than one hundred countries, via more than 20 locations in Europe and beyond. The F24 AG Board of Directors consists of F24 co-founder Christian Götz and the spokesperson Dr. Jörg Rahmer. 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 gives you the opportunity to achieve the best possible balance between private and professional life.

Responsibilities

Develop and maintain high-performance shared backend services and horizontally scalable microservices for a crisis management SaaS platform. Collaborate with AI engineers to implement RAG pipelines, MCP servers, and LLM streaming integrations.