Lead Software Engineer (all genders)

Permanent employee, Full-time · Zagreb / HR

About the job

We seek an experienced Engineering Lead to take full ownership of our Portal development team (Java/Spring Boot + Angular). The Engineering Lead combines technical expertise with people leadership, serving as the technical authority and team lead. They are responsible for team performance, technical direction, people development, hiring, and delivery. Critically, this is a hands-on role – the Lead actively codes and contributes to feature delivery alongside the team, rather than purely managing. This hybrid role requires both strong technical depth and genuine leadership capability.

You

Key Responsibilities
Technical Leadership & Hands-On Development

Define and execute technical vision and strategy for the Portal platform in close collaboration with the Software Architect
Work with the Software Architect to make architectural decisions aligned with cloud-native principles and security requirements
Actively code and contribute to feature development – typically 40-50% hands-on coding
Take ownership of complex features and technically challenging problems
Ensure architectural decisions are well-executed and understood by the team
Establish coding standards and code quality expectations
Conduct technical reviews and ensure adherence to architectural principles and guidelines set with the Architect
Stay current with technology landscape and discuss emerging tools and approaches with the Software Architect

People Leadership

Provide direct feedback, performance management, and career development for team members
Conduct or participate in hiring and interview process
Create psychological safety and foster a culture of learning
Mentor Senior, Professional, and Junior Developers actively
Address performance issues constructively and promptly

Delivery & Execution

Partner with Product Owner(s) to refine and prioritize the team roadmap
Own team's delivery performance and reliability
Identify blockers and remove impediments to team progress
Balance feature work, technical debt, and innovation
Oversee release planning and production quality
Ensure architectural guidance is translated into team execution

Collaboration with Software Architect

Work closely with the Software Architect to define and refine platform architecture
Participate in architecture design reviews and technical strategy discussions
Communicate team feedback and implementation insights back to the Architect
Ensure the team understands and properly executes architectural decisions
Flag emerging technical challenges or constraints that may impact long-term architecture

Required Qualifications
Experience

Minimum 5-7+ years of professional software development
Minimum 3+ years in a lead or senior engineering role with people leadership
Proven track record building and scaling development teams
Experience delivering complex systems in production
Demonstrated success mentoring and developing other engineers

Technical Expertise – Portal Stack (Java/Spring Boot + Angular)

Expert-level: Java, Spring Boot ecosystem, Hibernate, Angular
Advanced knowledge of: Spring Security, Spring Data JPA, Jersey, Jackson, Drools, Quartz, Jasper Reports
Strong Angular expertise: components, services, state management, RxJS, performance optimization
SASS and frontend performance optimization
Caching strategies (Hazelcast), asynchronous messaging (RabbitMQ), websockets
Cloud-native architecture: containerization (Docker, Kubernetes), deployment strategies
Relational database design, SQL optimization, and scaling
REST API design and security

Cross-Stack Competencies

Expert security architecture: authentication, authorization, encryption, threat modeling
Cloud-native patterns: microservices, distributed systems, resilience, scalability
CI/CD pipeline design and implementation
Monitoring, observability, and logging strategies
Automated testing strategies (unit, integration, end-to-end)
Infrastructure-as-Code and container orchestration

Bonus: Polyglot Capabilities

Experience with other backends (Python, PHP, Node.js) demonstrates broader thinking
Understanding of language-agnostic principles and design patterns
Comfort in a polyglot environment

Leadership & Soft Skills

Excellent written and verbal communication in English and German
Strong emotional intelligence and people reading ability
Proven ability to lead and develop teams
Excellent problem-solving and decision-making skills
Comfortable with ambiguity and managing trade-offs
Mentoring and coaching capability
Hiring and interview experience

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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.

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Your application

Thank you for considering a career at F24. Please fill out the following form. In case you are experiencing problems with the document upload, mail your documents to jobs@f24.com.