Senior Frontend Engineer

About the job

Job Profile: Senior Software Engineer (Frontend / Web)
Zagreb

About the job
F24 is Europe's leading crisis management SaaS platform, trusted by governments, airlines, banks, and Fortune 500s in over 100 countries.
The TopEase platform is at the heart of our GRC offering, providing modern web-based tools for process modelling, analysis, and optimisation.
As part of our growing Zagreb Tech Centre, we are expanding our frontend capabilities to further enhance the TopEase Web platform.

Why F24?
You'll be working on technology that genuinely matters.
Our frontend engineers develop and maintain modern web applications on top of the Web3 platform. The focus is on usability, performance, and continuous improvement of the user experience.

You'll be part of a team delivering new features, improving existing components, and ensuring the platform keeps up with evolving standards and security requirements.
You

• Develop and maintain our core Web3 platform using modern JavaScript and native Web Components
• Design and implement new platform capabilities and customer-facing features
• Develop automated tests and contribute to a high-quality engineering culture
• Build and maintain REST APIs and work extensively with JSON-based data structures
• Upgrade dependencies and resolve compatibility, security and deprecation-related issues
• Analyse, refactor and modernise existing frontend components
• Improve usability and user experience across the platform
• Develop web applications based on the TopEase platform
• Manage development tasks and technical documentation within YouTrack
• Build expertise in Governance, Risk & Compliance (GRC) and the TopEase product landscape
• Collaborate closely with Product Management, QA and Engineering teams across Europe

What You'll Bring

• Strong frontend development experience with HTML5, CSS3 and JavaScript (ES5/ES6+)
• Experience working with REST APIs and JSON-based integrations
• Experience with professional build and dependency management tools such as npm, Rollup, Ant or Ivy
• Strong commitment to high-quality, performant and maintainable code
• Analytical mindset with a proactive and autonomous approach to problem solving
• Experience developing and maintaining automated tests
• B.Sc. in Software Development or equivalent practical experience
• Very good English skills; German is a plus
• Willingness to occasionally travel within Europe

Nice to Have

• Experience with AI-assisted development or AI-powered solutions
• A strong understanding of UI/UX principles and usability best practices
• Hands-on experience with automated testing approaches (Unit, Integration, E2E)
• Knowledge of application security and secure coding practices
• Experience working with XML and XPath
• Exposure to CI/CD pipelines and automation tools such as JenkinsTools & Technologies

Tech Stack
JavaScript (ES5/ES6+) | HTML5 | CSS3 | Native Web Components | REST APIs | JSON | npm | Rollup | Ant | Ivy | YouTrack | IntelliJ IDEA | Subversion (SVN)

Your tasks

Om jobben

You

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.

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.