Senior Software Engineer

Who are we?

Lyst is a global fashion shopping platform founded in London in 2010 and catering to over 160M shoppers per year. We offer our customers the largest assortment of premium & luxury fashion products in one place, curating pieces from 27,000 of the world's leading brands and stores. In 2025, Lyst joined Zozo, operators of Zozotown, the leading fashion e-commerce platform in Japan. This partnership marks a bold new era for Lyst, as we accelerate our vision and work together to transform the future of fashion shopping through AI and technology. 

At Lyst, we obsess over the customer, providing a search & discovery experience which offers inspiration, fulfilment, and personalisation. We believe that fashion is amazing but shopping for fashion often isn't, and use our technology, data and creativity to bring more joy, greater choice and fewer fails. Our mission is to help fashion shoppers make better choices and help fashion partners find better audiences as the category-leading destination for every fashion shopper.

The role:

We're looking for a new engineer to join our Product Listings squad to help Lyst work on transforming the shopping experience of fashion lovers. You will work closely with our current engineers, designers, product managers, and analysts to develop new product features. 

As a member of the Product Listings team, you'll work on maintaining and improving our product data and marketing systems. The team is responsible for keeping good product data, transforming it for the rest of the company to empower user journeys and support effective marketing campaigns.

We are data-driven and make decisions based on empirical results. You share the data mindset, can suggest pragmatic experiments to prove a hypothesis, and are willing to be proven wrong by data. Your role will be to drive technical improvements and innovations to the system through partnering with your product manager and tech leadership. 

Within the first three months, you will be able to:

• Contribute to every part of our system, tests, documentation, as well as code and process
• Collaborate with product managers, engineers, analytics, QA and designers
• Ensure the stability of our system by improving the monitoring tools we use
• Write resilient code that is well tested (unit, integration, etc.) and quality controlled
• Engage in code reviews to ensure pragmatic code makes it to production
• Be curious —not just the code, but the architecture of our platforms and everything that makes them work and the product

About the team:

• We improve and maintain services that ingest high volumes of product updates provided from thousands of different partners in parallel
• We use Machine Learning to normalise and enrich the product data to improve the customer experience
• We maintain systems critical for our analytics data and reporting
• We strive to keep our services highly available and scalable
• We aim to follow good observability standards and be proactive instead of reactive
• We are fully AWS hosted, utilising a range of tools and setups: ECS, Docker, GitHub, GHA, Postgresql, Redis, SQS, Sentry and more
• We support internal teams that work directly with fashion partners
• We also support marketing executives and their campaigns with bespoke systems

• We value collaboration and knowledge sharing within the team and beyond
• We are a no-blame culture
  
  
  

Core Requirements:

• Proven experience with Django/Python and web fundamentals
• Strong knowledge of Software Architecture Design Principles 
• Communication: You can communicate clearly and are open to feedback when sharing ideas with everyone on the team. You can explain your ideas clearly and transform them into plans. You can design the solution to a complex problem
• Quality - You strive to write code that is readable by everyone, well tested and robust in production. Code without rigorous tests helps no one. 
• You aren't afraid to refactor existing code in favour of working around shortcomings
• A thorough knowledge of automated testing, particularly unit testing
• Knowledge of CI/CD pipelines like GitHub Actions (GHA)
• As a Senior Engineer, you can coach and mentor your peers. You can take problem statements and recommend solutions. You can take on a role of feature lead and own the delivery of a piece of software.
  
  

Bonus points:

• Experience with data pipelines with frequent updates at high scale 
• Experience with ETL pipelines (DBT, Snowflake)
• Experience with Machine Learning technologies
  
  

Things that matter to us:

• You are curious at heart and like to take ownership of something to make it better
• You like to focus on quality and improving systems
• Being confronted with a difficult or strange problem makes you feel like a detective who wants to crack the mystery
• Sense of ownership over products, features and services the team looks after
• You have good experience dealing with legacy code
• You like to build and improve dashboards to follow technical and business metrics
• You have experience building for fault tolerance
  
  
  

• Our Ways of Working: We all come into the office on Tuesdays and Thursdays, with the option to work remotely or come into the office on the other days. We believe that in person collaboration and community spirit is super important, which is why we spend some of our time in the office and some of our time at home