Senior Full Stack Engineer
At Quantum, the technology team is growing and is looking for a Senior Full Stack Engineer to help shape and scale the technology platform. In this role, the engineer will take a leading hand in both frontend and backend systems, delivering high-quality development and thoughtful technical solutions across the product lifecycle. While the primary focus will be coding and architecture, the role will also involve supporting and guiding other developers, helping to foster a culture of quality, curiosity, and continuous improvement. The ideal candidate is a skilled individual contributor and a collaborative technical champion, someone who enjoys working closely with others to build scalable, efficient, and well-crafted applications using modern frameworks and tools.
- Lead by example as a hands-on developer, contributing to both front-end and back-end codebases.
- Shape architecture and system design for web applications, with a focus on scalability, security, and performance.
- Mentor and support other engineers, championing code quality through thoughtful reviews and shared best practices.
- Design and implement responsive, user-friendly web interfaces using modern JavaScript frameworks (Next.js, React).
- Partner with UX/UI designers to bring designs to life as functional, intuitive experiences.
- Strong expertise in JavaScript frameworks such as React, Vue.js, or Angular, with solid proficiency in HTML, CSS, and responsive design (required).
- Solid experience with Node.js, Express.js, and building RESTful APIs or microservices (required).
- Comfortable working with both SQL (PostgreSQL, MySQL) and NoSQL (MongoDB) databases (required).
- Experience integrating automated tests into CI/CD pipelines (e.g. Jenkins, CircleCI, GitLab CI) and familiarity with containerisation tools like Docker (required).
- Knowledge of CMS would be a bonus (nice-to-have).
- You do your best work as part of a team and enjoy sharing knowledge as much as gaining it (required).
- You're comfortable navigating ambiguity and a fast-moving environment (required).
- Excellent written and verbal English skills (required).
- Collaborative and grounded, you value others' perspectives and create space for them (required).
- Private Health Care (Bupa)
- Hybrid Working (3 days in office)
- Travel Insurance
- Competitive Base Salary
- Company Bonus Scheme
- Paid for AI Subscription (Claude / ChatGPT / Gemini)
- Market-Leading Training Programme
- Recognition & Reward Scheme
- Annual Company Conference
- Regular Happy Hours & Team Lunches
- Free Coffee, Drinks & Snacks
Quantum is a performance-driven affiliate marketing and digital comparison company that connects global brands with high-intent consumers. Headquartered in London, it builds data-driven comparison services and campaigns designed to be measurable, optimised in real time and scalable. The company combines in-house technology, full-stack analytics and a compliance-first approach to operate in regulated and high-growth sectors. Quantum aims to help users make faster, smarter buying decisions while driving growth for its partners.
