Senior Front-End Developer (React)
Zerocopter B.V. · Amsterdam, Noord-Hollandapprox. The posting names no place; this is the employer's city.
- Location
- Amsterdam, Noord-Holland
- The posting names no place; this is the employer's city.
- Posted
- Today
About the job
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 a safer place. We help organisations protect themselves by combining smart technology with the skills of some of the best ethical hackers out there. From SaaS security tooling to hands-on testing, we cover a wide range of services - always with a human touch.
We bring our services together under one clear structure, with shared tools, simple processes, and a set of values that guide how we work. We believe in innovation, honesty - and we’re building a team that feels the same way.
We are Zerocopter
We are Zerocopter
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.
Your Role: What You’ll Do
Your Role: What You’ll Do
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.
Responsibilities
Responsibilities
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).
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.
Does this feel like a good match?
Does this feel like a good match?
If so, we’d love to hear from you! Send your CV and a short motivation to [email removed].
We review applications as they come in.
Not sure yet? No worries. 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 - we’ll connect you with one of your future colleagues to help you get a clearer picture.
Menno Oomkens
Send Menno a message
Message us on Whatsapp
[phone removed]
Our services
Security reporting
Automated scanning
Testing
Services
Coordinated Vulnerability Disclosure
Recon
Pentesting
Pentesting-as-a-Service
Bug Bounty
Focused Hunts
Zerocopter
About us
Careers at Zerocopter
Contact us
Social
X
Copyright © 2026 Zerocopter BV
Terms
Privacy
Coordinated Vulnerability Disclosure Policy
Code of Conduct
Our services
Security reporting
Automated scanning
Testing
Services
Coordinated Vulnerability Disclosure
Recon
Pentesting
Pentesting-as-a-Service
Bug Bounty
Focused Hunts
Zerocopter
About us
Careers at Zerocopter
Contact us
Social
X
Copyright © 2026 Zerocopter BV
Terms
Privacy
CVD Policy
Code of Conduct
Onze diensten
Veiligheidsmeldingen
Automatisch scannen
Testen
Social
X
Zerocopter
About us
Careers at Zerocopter
Contact us
Producten
Responsible Disclosure
Recon
Pentesten
Pentesting-as-a-Service
Bugbounty
Focused Hunts
Copyright © 2026 Zerocopter BV
Terms
Privacy
Coordinated Vulnerability Disclosure Policy
Code of Conduct
Copyright © 2026 Zerocopter BV
Terms
Privacy
Coordinated Vulnerability Disclosure Policy
Code of Conduct
From Zerocopter B.V.'s own posting, which is always the source of truth. Apply there.