Senior Web Engineer

Company Description

Depop is the community-powered circular fashion marketplace where anyone can buy, sell and discover desirable secondhand fashion. With a community of over 35 million users, Depop is on a mission to make fashion circular, redefining fashion consumption. Founded in 2011, the company is headquartered in London, with offices in New York and Manchester, and in 2021 became a wholly-owned subsidiary of Etsy. Find out more at www.depop.com 

Our mission is to make fashion circular and to create an inclusive environment where everyone is welcome, no matter who they are or where they’re from. Just as our platform connects people globally, we believe our workplace should reflect the diversity of the communities we serve. We thrive on the power of different perspectives and experiences, knowing they drive innovation and bring us closer to our users. We’re proud to be an equal opportunity employer, providing employment opportunities without regard to age, ethnicity, religion or belief, gender identity, sex, sexual orientation, disability, pregnancy or maternity, marriage and civil partnership, or any other protected status. We’re continuously evolving our recruitment processes to ensure fairness and are open to accommodating any needs you might have.

If, due to a disability, you need adjustments to complete the application, please let us know by sending an email with your name, the role to which you would like to apply, and the type of support you need to complete the application to [email protected]. For any other non-disability related questions, please reach out to our Talent Partners.

Depop is hiring a Senior Web Engineer to join the Demand product pillar. This team focuses on attracting and activating users through high-performing, flawless buying experiences on the website.

You will partner closely with Product, Design, Data and other specialists to shape experiments and own the delivery of user-facing features that directly impact conversion, engagement, and trust at scale.

Alongside product development, you will contribute to broader engineering efforts that shape how we build at Depop. From accelerating development, to streamlining processes and improving developer experience, you will use modern technologies, such as AI and LLMs, to advance how we build and ship software.

This role combines deep engineering expertise, product thinking, and technical leadership.

What You’ll Do

• Lead technical design and delivery of sophisticated web initiatives that impact millions of daily users

• Own projects end-to-end: solution design, implementation, rollout, and iteration

• Build performant, accessible, and resilient user experiences

• Evolve our APIs to support scalable product development

• Drive improvements to our design system and frontend architecture

• Shape and evolve engineering workflows, standards and industry best practices

• Maintain high standards for reliability, performance and operational excellence

• Mentor engineers and raise the bar on code quality, testing, and engineering standards

What You’ll Bring

• Strong expertise in JavaScript and TypeScript

• Experience building production-scale applications with modern React.js 

• Experience designing RESTful APIs with Node.js

• Proven understanding of web fundamentals: rendering, performance optimization, accessibility, and cross-browser compatibility

• Experience writing automated tests using modern JS testing frameworks

• Owning architectural decisions, making trade-offs between performance, maintainability and scalability

Bonus Points

• Experience with Next.js App Router (including server components and SSR strategies)

• Experience in experimentation-driven environments (A/B testing, feature flags)

• Experience working in marketplace or e-commerce environments

• Experience using observability and monitoring tools

• Knowledge of CI/CD and GitHub Actions

• Familiarity using a variety of AI tools and LLMs (e.g. Claude, Copilot, Codex)

Additional Information

Health + Mental Wellbeing

• PMI and cash plan healthcare access with Bupa

• Subsidised counselling and coaching with Self Space

• Cycle to Work scheme with options from Evans or the Green Commute Initiative

• Employee Assistance Programme (EAP) for 24/7 confidential support

• Mental Health First Aiders across the business for support and signposting

Work/Life Balance:

• 25 days annual leave with option to carry over up to 5 days

• 1 company-wide day off per quarter

• Impact hours: Up to 2 days additional paid leave per year for volunteering

• Fully paid 4 week sabbatical after completion of 5 years of consecutive service with Depop, to give you a chance to recharge or do something you love.

• Flexible Working: MyMode hybrid-working model with Flex, Office Based, and Remote options *role dependant

• All offices are dog-friendly

• Ability to work abroad for 4 weeks per year in UK tax treaty countries

Family Life:

• 18 weeks of paid parental leave for full-time regular employees

• IVF leave, shared parental leave, and paid emergency parent/carer leave

Learn + Grow:

• Budgets for conferences, learning subscriptions, and more

• Mentorship and programmes to upskill employees

Your Future:

• Life Insurance (financial compensation of 3x your salary)

• Pension matching up to 6% of qualifying earnings

Depop Extras:

• Employees enjoy free shipping on their Depop sales within the UK.

• Special milestones are celebrated with gifts and rewards!