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Principal Engineer (Scala)

Posted: 22 Sep 2020 Closes: 22 Oct 2020
London, England, United Kingdom Competitive
Permanent & Full-time DEP_4176997003

Principal Engineer - Scalability


Depop is the fashion marketplace where the next generation buy, sell and get inspired. We are headquartered in London, UK with locations in Manchester, New York, Los Angeles and Australia. We have more than 20 million registered users in 147 countries. In the UK, 1 in 3 Gen Z/Millennials are registered and in the US we have grown 300% over two years. We are also the only European player to have recently entered the top 25 shopping apps by daily active users.

Our mission is to empower the next generation to transform fashion, and our team of nearly 200 people are dedicated to serving the needs of our global community.

We operate on three pillars:
Community: Our buyers, sellers and employees are inclusive, diverse and accessible. We are committed to empowering diversity within the fashion community.Entrepreneurship: We support our community and help them build their business with Depop. We thrive on supporting innovation by shaping an environment where creators, makers or hustlers can thrive. Sustainability: Depop helps extend the life of garments and reduce waste, we care about the world and want to make a positive change within the fashion industry.
The Role

The Scalability team was historically tasked with taking the worst performing component of our Python/Django monolith, and splitting it out into smaller, more performant, standalone services written in Scala. Having seen some success of this strategy, in combination with focussing on improvements to our legacy codebase, we now have some breathing room and are looking for someone to join a team in taking on the final conclusion of this mission: Breaking apart the remaining components of a large Python/Django monolith into a Scala-based micro/service-oriented architecture.

Want to find out more about Depop & our engineering team? Take a look at our blog!

We write about technology, people and smart engineering -

  • Work closely with Product Managers, Designers, Front-End and other Backend Developers to understand problems and design solutions
  • Produce high quality, performant code which is well-structured and simple to understand, that will be used by 1M+ active daily users
  • Embrace agile methodologies and engage in a culture of continuous improvement by attending events such as book club, functional meet up, blameless post-mortems, architecture review, war games, hack days
  • Collaborate on a daily basis with fellow engineers to solve problems and write code
  • Own your code throughout its entire production lifecycle
  • We love to work in Scala but would also like to hear from you if you have experience in other JVM languages.
  • Experience with the Play framework, and DynamoDB
  • Experience with event driven architectures, preferably using RabbitMQ
  • Experience with writing and operating reliable distributed systems at scale (10k+ req/sec)
  • Experience working with RDBMS, ideally Postgres
  • Ability to proactively find and solve complex problems independently
  • A desire for continuous learning in software architecture, functional programming or other relevant disciplines.
Desirable Requirements
  • Experience with Python/Django
  • Experience in managing AWS Infrastructure as Code, ideally with Terraform
  • Experience with Kubernetes
  • Contribution to open-source libraries
  • Degree level knowledge of Computer Science or related technical field
  • Tech blog posts

Depop offers the opportunity to work in one of the UK's fastest-growing scale-ups, with a vibrant and diverse group of people, building a product we all deeply care about, in addition to:
  • Learn and Grow: We want to give our people the opportunity to learn. We sponsor and run a myriad of programs, conferences and meet-ups to upskill our employees and enhance their journey with us, just ask!
  • Wellbeing: We care about our employees wellbeing. We offer a cycle to work scheme, healthy fruit and snacks in the office, breakfast every Tuesday, eyecare vouchers and a discounted gym membership at Nuffield Health.
  • Mental Health: Our employees mental health is a top priority. We offer subsidised counseling appointments with a qualified therapist through SelfSpace, we have trained mental health first aiders and we also run yoga, meditation and more.
  • Work/life balance: We have 25 days of holiday with the opportunity to buy or sell 5 more, a day off for activism to allow you the opportunity to make a difference and we offer sabbaticals for our long serving employees.
  • Family life: We offer flexible working (based on the team you will be joining), generous maternity/paternity and parental leave policies which includes adoption and paid time off for fertility treatments. Also, all of our offices are dog-friendly! Do your best work with your best friend.
  • Financial: We match up to 6 percent on your pension and retail discounts through benefithub.
  • Fun: We love to hang out with each other at Depop. On Friday we finish an hour early to socialise with free food, and have amazing Winter and Summer Parties to celebrate our successes. We also host internal employee socials such as quiz night, games night, movie night and more.
Depop is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.


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