Senior Full Stack Engineer | Tech For Good (E-Commerce Start-Up) | React.js / Next.js/ TypeScript / PostgresSQL | LDN 3 Days Per Week | £70K - £90K Company I'm currently working with one of the UK’s fastest-growing start-ups on a mission to transform the future of sustainable luxury. They're looking for a Full Stack Growth Engineer to become a key player in their highly creative, data-driven Growth team. This is a unique opportunity to work at the intersection of storytelling, design, and cutting-edge engineering. You’ll collaborate closely with in-house filmmakers, designers, and a technical growth team (yes, everyone here codes) to build tools, features, and experiments that drive growth, engagement, and retention. Responsibilities for ---> Senior Full Stack Engineer | Tech For Good (E-Commerce Start-Up) | React.js / Next.js/ TypeScript / PostgresSQL | LDN 3 Days Per Week | £70K - £90K Your role: ->Design and build full-stack features that optimize customer acquisition and conversion. ->Use your TypeScript and React expertise to craft compelling, high-performing user experiences. ->Write and interpret complex SQL queries to support growth experiments and performance analysis. ->Collaborate with product, design, marketing, and engineering to identify and execute on high-impact growth opportunities. ->Apply UX and CRO best practices to streamline user journeys and boost engagement. Contribute to a service-oriented architecture with scalable, maintainable code. ->Lead with a test-and-learn mindset—experimenting, iterating, and scaling what works. Tech Stack ->React.js ->Next.js ->TypeScript ->PostgresSQL Type of engineer for Senior Full Stack Engineer | Tech For Good (E-Commerce Start-Up) | React.js / Next.js/ TypeScript / PostgresSQL | LDN 3 Days Per Week | £70K - £90K ->Strong programming skills (ideally in TypeScript) and hands-on experience with React. ->Solid grasp of relational databases (PostgreSQL preferred) and confident SQL abilities. ->Deep understanding of UX principles and their effect on growth metrics. ->Proven experience building full-stack applications in a fast-paced environment. ->Analytical mindset with a passion for using data to drive decisions. ->A degree from a top-tier university. ->Enthusiasm for working in a mission-driven start-up—and making a meaningful impact. Remuneration & Benefits ->£70,000 - £90,000 -> Private healthcare as standard. -> 25 days holiday + bank holidays, increasing annually. ->Hybrid working – three days in our London studio. ->Team lunches at Hackney favourites and regular socials. ->Studio perks – a light-filled workspace with top-tier gear, breakout spaces, and creative buzz. If you want to hear more about the Senior Full Stack Engineer | Tech For Good (E-Commerce Start-Up) | React.js / Next.js/ TypeScript / PostgresSQL | LDN 3 Days Per Week | £70K - £90K please apply ASAP with a CV and we will give you a call if we think you are a match! 😊.