At a Glance
- Tasks: Lead the development of scalable, high-performance frontend applications using React.
- Company: Join Firstup, a pioneer in enhancing employee experiences for Fortune 100 companies.
- Benefits: Enjoy excellent PTO, health benefits, remote work, and a supportive leadership team.
- Other info: Thriving, inclusive environment that rewards innovative ideas and personal growth.
- Why this job: Make a real impact on employee engagement while working with cutting-edge technology.
- Qualifications: 5+ years in frontend development with expertise in React, TypeScript, and modern tooling.
The predicted salary is between 60000 - 80000 € per year.
Who We Are
At Firstup, our mission is to improve the employee experience at every moment that matters, large and small. As the communication pipeline for the world's workforce, we now serve 40 of the Fortune 100 companies, reaching and connecting more than 17 million employees daily. Our employees are experts in the employee experience, workforce communications and technology. Joining Firstup means joining a movement to make work better for every worker. As the world’s first intelligent communication platform, Firstup meaningfully engages employees at every moment from hire to retire, and delivers engagement insights to help companies support, promote and retain their talent.
Job Summary
The Sr. Software Engineer (FE) will lead the development of scalable, high-performance frontend architectures. You will drive engineering excellence through modern React patterns, robust testing strategies, and the strategic use of AI‑assisted development tools to accelerate delivery without compromising quality.
Responsibilities
- Core Engineering: Build scalable frontend applications using modern React patterns and a component‑driven architecture.
- Systems Design: Own the design and implementation of a reusable, accessible component library and documentation.
- Testing & Quality: Define the frontend testing strategy (Unit, Integration, E2E) including visual regression and user interaction coverage.
- Performance & Reliability: Optimize client‑side performance and ensure production readiness through observability, error monitoring, and rapid incident resolution.
- AI Integration: Leverage and advocate for AI‑assisted tools (e.g., GitHub Copilot, Claude) to accelerate development while maintaining rigorous engineering judgment and accountability for code correctness.
- Leadership: Drive team‑wide best practices, conduct quality code reviews, and mentor engineers to elevate overall engineering quality.
- Collaboration: Partner with Product and Design to translate requirements into intuitive UI, making informed technical trade‑offs in the face of ambiguity.
Minimum Qualifications
- Experience: 5+ years building reliable, high‑performance frontend applications at scale.
- Core Stack: Expertise in React (Hooks, State Management), TypeScript, and modern tooling (Vite, Webpack).
- Testing: Proficiency with Jest, React Testing Library, and Cypress/Playwright.
- UI/UX: Proven experience building design systems or component libraries with a focus on WCAG accessibility.
- AI Literacy: Demonstrated ability to use and critically validate AI‑assisted coding outputs (e.g., Claude, Copilot).
- Education: Bachelor’s in CS or equivalent practical experience.
Preferred Qualifications
- Fullstack: Experience with Ruby on Rails, Node.js, or AWS/Cloud infrastructure (Docker, Kubernetes).
Why Firstup?
Because you care - about people, the work you do, and the connections you make. Work is such a large part of life; it only makes sense to make it awesome. If you want to engage brilliant minds in a high‑growth and inclusive environment where ideas are rewarded regardless of who they come from, join us. This is a rapidly changing space so if you thrive on ambiguity, are hungry for a challenge, and have the guts to speak your mind, you could be a perfect fit. We offer an excellent PTO program, great health benefits, a casual and friendly environment, remote work, and a leadership team who truly believes in your growth – both personally and professionally.
Firstup is committed to providing equal employment opportunities to all applicants for employment and to all employees, without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, protected disability, veteran status or any other protected status in accordance with applicable federal, state or local laws.
Sr. Software Engineer, Frontend in London employer: Firstup
At Firstup, we are dedicated to enhancing the employee experience, making us an exceptional employer for those passionate about technology and communication. Our inclusive work culture fosters innovation and collaboration, offering ample opportunities for personal and professional growth in a rapidly evolving environment. With excellent health benefits, a generous PTO programme, and a commitment to remote work flexibility, Firstup is the ideal place for talented individuals ready to make a meaningful impact.
StudySmarter Expert Advice🤫
We think this is how you could land Sr. Software Engineer, Frontend in London
✨Tip Number 1
Network like a pro! Reach out to folks in your industry on LinkedIn or at meetups. A friendly chat can lead to opportunities that aren’t even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best frontend projects using React and TypeScript. This gives potential employers a taste of what you can do.
✨Tip Number 3
Prepare for those interviews! Brush up on your coding skills and be ready to discuss your approach to building scalable applications. Practice common frontend interview questions to boost your confidence.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are genuinely interested in joining our mission.
We think you need these skills to ace Sr. Software Engineer, Frontend in London
Some tips for your application 🫡
Show Off Your Skills:When you're writing your application, make sure to highlight your experience with React and any cool projects you've worked on. We want to see how you’ve built scalable frontend applications and what makes you a standout candidate!
Be Clear and Concise:Keep your application straightforward and to the point. Use bullet points for your skills and experiences to make it easy for us to see why you’re a great fit for the role. Remember, clarity is key!
Tailor Your Application:Make sure to customise your application to reflect our mission at Firstup. Show us how your values align with improving employee experiences and how you can contribute to our movement!
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!
How to prepare for a job interview at Firstup
✨Know Your Tech Stack
Make sure you brush up on your React, TypeScript, and modern tooling like Vite and Webpack. Be ready to discuss how you've used these technologies in past projects, especially in building scalable frontend applications.
✨Showcase Your Testing Skills
Prepare to talk about your experience with testing frameworks like Jest and Cypress. Have examples ready that demonstrate how you've defined testing strategies and ensured quality in your previous work.
✨Demonstrate AI Literacy
Since AI integration is key for this role, be prepared to discuss how you've leveraged AI-assisted tools like GitHub Copilot in your development process. Share specific instances where these tools helped you improve efficiency without sacrificing code quality.
✨Emphasise Collaboration
Firstup values teamwork, so think of examples where you've partnered with product and design teams. Highlight how you translated requirements into user-friendly interfaces and made technical trade-offs when necessary.
