Senior Front-End Developer (React)
Groningen / Remote
32-40 hours per week
€ 4.000 - € 6.000
At Zerocopter, we are on a mission to make the digital world safer — one vulnerability at a time. We empower organisations by combining automated testing with the world’s best ethical hackers. From SaaS to Red Teaming, we offer a full spectrum of cybersecurity services, all delivered with a human touch.
Our ambition is to be the cybersecurity partner of choice in the Netherlands and beyond. Zerocopter delivers a full spectrum of services under a unified structure with shared platforms, streamlined processes, and a common set of values. We lead through innovation, integrity, and operational excellence.
As a Senior Front-End Developer, you will play a leading role in designing, developing, and optimising the user interfaces of the ZC.Next platform. You will help define how users — from CISOs to security researchers — interact with powerful backend systems, AI insights, and complex workflows.
You will work closely with product owners, UX designers, back-end developers, and cybersecurity experts to build accessible, performant, and elegant interfaces. Your work will directly support organisations and ethical hackers in making the internet a safer place.
Lead the development of React-based components and interfaces within the ZC.Next platform.
Build user portals, dashboards, and front-end integrations with AI insights, real-time data, and subscription logic.
Translate complex cybersecurity workflows into intuitive UI/UX.
Collaborate with back-end developers on API integrations (REST, WebSocket, GraphQL).
Drive front-end architecture decisions and mentor junior developers.
Ensure platform usability, accessibility, and responsiveness across devices.
Contribute to the transition from legacy platforms to the new modular system.
Help shape the front-end roadmap in alignment with product and business goals.
Your Profile
Essential Skills
Extensive experience with React, including hooks, state management, and scalable component design.
Proficient with modern front-end build tools and testing frameworks (e.g. Webpack/Vite, Jest, Cypress).Experience building SaaS platforms or multi-tenant environments.
Strong understanding of UI performance optimisation, accessibility (WCAG), and cross-browser support.
Able to work with Docker, Git, CI/CD pipelines.
Fluent in Dutch and English.
Bonus Skills
Experience and affinity with AI integrating AI-powered features into UI (e.g. dashboards, insights, automated actions).
Familiarity with cybersecurity tools or processes.
Experience working with real-time data or event-driven architectures.
Exposure to design systems (e.g. Storybook, Figma-to-React).
We bring together the best hackers in the world in a trusted network, giving you access to ongoing protection: Bug Bounty, Pentesting, Recon, and Coordinated Vulnerability Disclosure - all integrated in one platform.
We’re not here to point fingers. We’re here to help.
What we offer
A pivotal role in shaping the next generation of cybersecurity platforms.
A place in a collaborative and innovative team that values ownership and impact.
The opportunity to work on ZC.Next, a flagship product with industry reach.
Flexibility to work remotely, with Tuesdays as a team day at our HQ in Groningen.
Competitive salary, pension scheme currently under development.
Personal development budget and technical freedom to experiment and grow.
Want to help redefine how ethical hacking and cybersecurity are delivered? Join a mission-driven tech organisation where your code has real-world impact. Send your CV + short motivation to menno@zerocopter.com. We review applications on a rolling basis, don’t hesitate to reach out!
Not sure yet? If you’d like to learn more about the role, the team, or what it’s like to work at Zerocopter, feel free to reach out first. Send that email anyway, and we’ll connect you with one of your future colleagues so that you can make a well-informed decision.
