At a Glance
- Tasks: Build and maintain features using React, TypeScript, Node.js, and PostgreSQL.
- Company: Join Zelt, a high-growth SaaS company transforming people operations.
- Benefits: Work with a diverse team, enjoy direct impact, and grow your skills.
- Other info: Be part of a culture that values curiosity and continuous learning.
- Why this job: Make a real difference in a product that modern companies rely on daily.
- Qualifications: Experience in fullstack development and eagerness to learn from senior engineers.
The predicted salary is between 28800 - 48000 € per year.
About Zelt
Zelt is on a mission to rebuild how organisations run. Our all-in-one platform helps modern companies manage their people operations across payroll, onboarding, time off, IT provisioning and more, in a seamless and automated way. We are the only platform on G2 named a Global Momentum Leader across HR, Payroll and IT, and we are just getting started. Our product is technically ambitious, structurally different from anything else on the market, and already trusted by forward-thinking companies.
Why this role matters:
As a Fullstack Engineer at Zelt you will help build features end to end, from implementation to testing and launch. You will work closely with senior engineers who will guide architecture decisions while you focus on delivering high-quality code and learning how to scale a SaaS product. This is the ideal moment to join: Zelt has product-market fit and strong backing, yet it is still early enough that your work will influence the platform’s growth and user experience. You will see your code reach customers quickly and have visible impact. You will join a lean, product-focused team where your ideas count, your growth is supported, and your work helps shape a platform used every day by modern companies.
What you will do:
- Implement and maintain features across the stack using React, TypeScript, Node.js, NestJS, PostgreSQL and AWS
- Collaborate closely with senior engineers, product and design to deliver well-scoped features from start to finish
- Write clean, maintainable, well-tested code and follow engineering best practices
- Contribute to improving developer workflows and tooling (GitHub, GitHub Actions, Slack, Linear, Sentry, SolarWinds)
- Learn about and contribute to infrastructure (Docker, AWS ECS, RDS, S3, SES, CloudFront, CDK) with support from senior teammates
- Participate in code reviews, share knowledge and grow your skills while supporting a collaborative team culture
What we are looking for:
- Commercial experience delivering fullstack applications in a product-driven environment
- Proficiency with React, TypeScript, Node.js and PostgreSQL, with exposure to AWS-hosted services
- Familiarity with common developer tools and workflows such as GitHub, GitHub Actions, Slack, Linear, Sentry, SolarWinds
- Eagerness to learn from senior teammates, share knowledge, and grow technical depth
- Strong communication skills and a collaborative, problem-solving mindset
Nice to have:
- Experience working in a startup or scale-up environment
- Interest in CI/CD, observability and scaling infrastructure
- Enthusiasm for improving performance, code quality and developer experience
Why join Zelt:
- Join a high-growth SaaS company backed by the investors of Notion, Spotify and Airbnb at exactly the right stage: proven product, strong momentum and still small enough that every engineer shapes the platform.
- Grow your skills alongside experienced senior engineers while taking on meaningful projects early in your career.
- Work with a diverse, international team that ships fast and delivers features customers use every day.
- Enjoy direct impact and visibility for your work instead of being one of hundreds in a big engineering org.
- Be part of a culture that values curiosity, technical excellence and continuous learning, with clear opportunities to step up into senior responsibilities as you develop.
Your work at Zelt will not disappear into the background – it will help define how modern companies run their people operations.
Fullstack Engineer in London employer: Zelt
Zelt is an exceptional employer for Fullstack Engineers, offering a unique opportunity to influence the growth of a cutting-edge SaaS platform in a collaborative and supportive environment. With strong backing from notable investors and a commitment to employee development, you will work alongside experienced engineers on meaningful projects that have a direct impact on modern companies' operations. The culture at Zelt fosters curiosity and technical excellence, ensuring that your contributions are valued and your career can flourish.
StudySmarter Expert Advice🤫
We think this is how you could land Fullstack Engineer in London
✨Tip Number 1
Network like a pro! Reach out to current employees at Zelt on LinkedIn or other platforms. Ask them about their experiences and share your passion for the role. This can give you insider info and might even lead to a referral!
✨Tip Number 2
Show off your skills! Create a small project using React, TypeScript, or Node.js that showcases your abilities. Share it on GitHub and include it in your conversations during interviews. It’s a great way to demonstrate your hands-on experience.
✨Tip Number 3
Prepare for technical interviews by brushing up on coding challenges and system design. Use platforms like LeetCode or HackerRank to practice. Being well-prepared will help you feel confident and ready to tackle any questions thrown your way.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in being part of the Zelt team. Let’s get you that interview!
We think you need these skills to ace Fullstack Engineer in London
Some tips for your application 🫡
Tailor Your Application:Make sure to customise your CV and cover letter for the Fullstack Engineer role. Highlight your experience with React, TypeScript, Node.js, and PostgreSQL, and show us how your skills align with our mission at Zelt.
Showcase Your Projects:Include links to your GitHub or any relevant projects you've worked on. We love seeing real examples of your code and how you’ve tackled challenges in a product-driven environment.
Be Authentic:Let your personality shine through in your application. We’re looking for someone who’s eager to learn and collaborate, so don’t hesitate to share your passion for tech and problem-solving!
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’re considered for this exciting opportunity at Zelt!
How to prepare for a job interview at Zelt
✨Know Your Tech Stack
Make sure you’re well-versed in React, TypeScript, Node.js, and PostgreSQL. Brush up on your knowledge of AWS services too, as they’re crucial for the role. Being able to discuss your experience with these technologies will show that you’re ready to hit the ground running.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous projects and how you overcame them. Zelt values a collaborative, problem-solving mindset, so demonstrating your ability to tackle issues head-on will resonate well with the interviewers.
✨Engage with the Team Culture
Zelt is all about collaboration and continuous learning. Be ready to share examples of how you’ve worked in teams before and how you’ve contributed to a positive team culture. This will highlight your fit within their lean, product-focused environment.
✨Ask Insightful Questions
Prepare thoughtful questions about Zelt’s platform, their engineering practices, or the team dynamics. This shows your genuine interest in the role and helps you gauge if the company aligns with your career goals. Plus, it’s a great way to demonstrate your eagerness to learn and grow.
