Senior Full Stack Engineer, Lyst

We’re looking for a Senior Full Stack Engineer to join our Member Experience squad — a collaborative, cross-functional team dedicated to improving the experience for Lyst members (users who create an account). You’ll get to work across user personalisation, our stock and price alerts, as well as the optimisation and creation of member-exclusive features. Member Experience work spans across the website, the mobile app, our CRM database and our e-mail/push-notification service with dedicated team members for each area. Together, we focus on creating seamless, engaging experiences that make it easier for people to join, stay, and get the most out of Lyst.

What will you be working on?

• Building new and maintaining existing features (frontend and backend) and functionality for our e-commerce platform.
• Developing primarily in Python (Django) for the backend and JavaScript/TypeScript (React) for the frontend.
• Integrating with internal/external APIs and services.
• Owning features from initial planning through to deployment, ensuring they deliver real value.
• Writing reliable, well-tested code, using tools such as pytest, Jest with React Testing Library, Storybook, and Cypress for end-to-end coverage.
• Monitoring performance and stability through observability tools, keeping our platform running smoothly.
• Champion knowledge-sharing by crafting documentation that’s as delightful to read as it is useful.
• We are fully AWS hosted. You’ll get to use a range of tools and services, such as Kubernetes, Docker, Postgresql, Redis, SQS, SNS, S3, etc.
• Collaborating with product managers, designers, QA engineers and web/app engineers to help execute on product vision and drive value for our business.
• Deploying features as experiments (e.g. A/B testing) and measuring the impact.
• Scaling, improving and maintaining our system for sending push notifications and emails to our customers.

Please note this is a hybrid position in London Bridge - if you are comfortable coming into the office twice per week (Tuesdays and Thursdays primarily), then please continue to apply.

• Solid experience with Python and web frameworks (we use Django).
• Strong understanding of React, modern JavaScript/TypeScript, HTML, and CSS.
• A firm grasp of web fundamentals and how everything fits together.
• You write robust, maintainable code that others can read with ease.
• Deep knowledge of automated testing, especially unit testing, to ensure quality at every stage.
• An eagerness to improve existing codebases through thoughtful refactoring rather than patching over issues.

Things that matter to us:

• You are curious at heart and like to take ownership of something to make it better.
• You are detail oriented.
• You are a team player and communicate with your peers and other stakeholders in the company on a day to day basis.
• You are able to communicate clearly and be humble when sharing ideas with everyone on the team. You are able to explain your ideas clearly and transform them into plans. You are able to design the solution to a complex problem.
• Sense of ownership over products, features and services the team looks after.
• You have experience iterating & refactoring existing code as well as writing new code.

Here’s what to achieve after your first 3 months:

• Gain deep familiarity of our tech stack, including the architecture, codebases, workflows and tooling. You should be comfortable under the hood!
• Deliver work at a suitable cadence, demonstrating efficiency and consistent progress. Ship your feature!
• Use best practises and encourage others to do the same. Lead with quality!
• Review pull requests in a timely manner including actionable, impactful and constructive feedback. Raise the bar with every PR!
• Help junior developers thrive through pairing, troubleshooting, sharing architectural insight, and clear feedback. Guide and grow together!
• Build relationships across the organisation and collaborate effectively across product, design and other engineers. You won’t be working alone!
• Take responsibility for tasks end-to-end showing reliability in agreeing on commitments and meeting them. Be the teammate everyone can count on!

We want to build a world where fashion works for everyone, and we want teams that are just as inclusive. Diversity and inclusion is an integral part of our culture at Lyst. We recognise and celebrate the value and impact diversity brings to our company and are committed to ensuring this is a consistent focus, for which we are held to account. We are committed to treating all applicants fairly and equally, and encourage candidates from all backgrounds to apply for this role. We are happy to talk about flexible working arrangements.

Don’t meet every single requirement? Studies have shown that women and people of color are less likely to apply to jobs unless they meet every single qualification. At Lyst we are dedicated to building a diverse, inclusive and authentic workplace, so if you’re excited about this role but your past experience doesn’t align perfectly with every qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles.