Full Stack MERN Engineer

Full-Stack Engineer – Growth-Focused SaaS Platform
Remote (UK / EU) | Full-Time | Scale-up | EdTech / Cyber Security
We\’re working with a fast-scaling SaaS company operating in the cyber security education space. With over 4 million users globally and continued rapid growth, they\’re on a mission to make learning cyber security accessible and engaging through a gamified training platform.
As part of their expansion, they\’re now looking to hire a Full-Stack Engineer to join a small, cross-functional team focused on product growth experiments. This role is ideal for someone who thrives on delivering measurable user impact and is comfortable working in fast, iterative build-measure-learn cycles.

The Opportunity:

• Collaborate with product, design, and engineering to build and ship new features aimed at improving user acquisition, activation, and retention
• Design and implement scalable, secure, and reliable software systems across the full stack
• Monitor system performance and experiment outcomes to guide future development
• Participate in Agile development practices, code reviews, and technical planning
• Contribute to a culture of experimentation, quality, and rapid iteration

What We\’re Looking For:

• 5+ years of hands-on experience as a full-stack engineer (preferably within SaaS or product-led environments)
• Proven experience working in a software growth team or directly on product growth experiments
• Strong skills across the MERN stack (Node.js, React, Express, MongoDB)
• Familiarity with CI/CD workflows and cloud-based environments (AWS preferred)
• Understanding of scalable system design and front-end performance best practices
• Comfortable working in small teams and contributing across the development lifecycle
• Strong communication skills and the ability to work autonomously in a remote-first environment
• Interest in cyber security or educational platforms is a bonus

Why Join:

• Work at the intersection of education and cybersecurity in a product that truly impacts users
• Be part of a fast-moving team where your contributions directly influence growth and engagement
• Flexible, remote-first culture and strong technical leadership
• Opportunity to grow your skills in experimentation-led product development

If you\’re excited by the challenge of helping scale a product used by millions and you have hands-on experience working on growth-focused software teams we\’d love to hear from you.