Backend Engineer, Platform

Depop is looking for a skilled Software Engineer to join us within our Platform Pillar, working on the team that owns and evolves Depop's core APIs and services.

The Platform Pillar is part of Depop's enablement function, responsible for building and running the internal foundations that help Depop engineers ship software safely, confidently, and efficiently.

Rather than focusing primarily on user-facing features, Platform teams create and maintain the systems, tools, infrastructure, and engineering capabilities that other teams rely on every day.

This team owns and manages Depop's core application, which sits at the heart of the platform and is responsible for managing critical user and product data.

It is a foundational part of Depop's technology estate, supporting many of the experiences used by buyers, sellers, and internal teams across the business.

This is a unique opportunity to help shape the technical direction of one of Depop's most important backend systems.

You'll be working on highly impactful platform problems, improving scalability and reliability, reducing technical risk, and helping define how Depop's core systems evolve for years to come.

You'll be building and improving backend services, influencing architectural direction, and working with a collaborative, supportive team that values good engineering and good people in equal measure.

Responsibilities

• Work closely with Engineering Managers, Product Managers, Platform Engineers, Security Engineers, Data Engineers, and other backend teams to understand problems and design effective solutions.
• Produce high-quality code that is well-structured, reliable, maintainable, and simple to understand, supporting systems used by millions of Depop users.
• Take ownership of platform and product development, from technical discovery and problem definition through to the breakdown of work and implementation.
• Contribute to high-level architectural thinking, helping to set the long-term technical direction for Depop's core application and associated platform services.
• Improve the scalability, reliability, observability, and operational safety of critical backend systems.
• Work on foundational platform capabilities, including core backend systems, service-to-service communication, authentication, infrastructure architecture, messaging, database scalability, deployment tooling, and internal engineering enablement.
• Help evolve Depop's core application so it remains safe, performant, and fit for future product and engineering needs.
• Communicate clearly with stakeholders across engineering, product, security, data, and infrastructure, translating technical complexity into shared understanding and actionable plans.
• Support applications end to end, including production incident management, debugging, monitoring, and continuous improvement.
• Embrace agile methodologies, user-centred thinking, and a pragmatic approach to solving real business and engineering problems.
• Engage in a culture of continuous improvement by participating in blameless post-mortems, architecture reviews, engineering guild sessions, and technical strategy discussions.
• Collaborate daily with fellow engineers in a cross-functional environment to solve complex problems and write high-quality code.
• Mentor and support the growth of colleagues, identifying opportunities to share knowledge and strengthen team skill sets.
• Own your code, workflows, services, and data through their entire lifecycle.
• Must Haves
• Solid software engineering experience, with strong evidence of the ability to learn and work effectively in the team's Scala and Python stack.
• A strong backend engineering background, including experience designing, building, testing, and operating production services.
• Willingness to work across multiple paradigms and languages, including backend, platform, and data-oriented work.
• Strong technical and non-technical communication skills, with the ability to explain complex technical topics clearly to different audiences.
• Proficiency in testing solutions at different levels, including unit and integration testing.
• Experience with relational or non-relational databases.
• Experience with Kubernetes or similar container orchestration technologies.
• Experience working on production systems where reliability, scalability, and maintainability are critical.
• Ability to proactively identify and solve complex technical problems while knowing when to seek guidance or collaborate with peers.
• Desired Experience
• Experience writing high-quality backend code in Scala, Type Script, Python, or another JVM language.

We are looking for a polyglot engineer who is motivated by the problem being solved, not just the language being used.

• Experience working with large, business-critical backend applications or platform systems.
• Experience with databases such as Postgre SQL, My SQL, or Dynamo DB.
• Experience building scalable web applications or backend systems handling significant traffic and data volume.
• Experience improving reliability, scalability, observability, and operational maturity in production systems.
• Experience working in a Dev Ops culture, including CI/CD pipelines, observability, incident response, and production ownership.
• Experience working on platform capabilities that support other engineering teams, such as shared services, deployment tooling, infrastructure abstractions, or internal developer workflows.
• A product-oriented and platform-minded approach, with a focus on solving real engineering and business problems rather than over-engineering solutions.
• Bonus Points
• Experience with the Typelevel stack.
• Experience with the Play Framework.
• Experience working on platform engineering, internal developer platforms, or core infrastructure systems.
• Experience with large monoliths, service extraction, or modernisation of legacy backend systems.
• Experience with e Commerce or marketplace platforms.
• Experience with event-driven architectures, preferably using Kafka.
• Experience using production AWS infrastructure, ideally with Terraform.
• Experience with data engineering.
• Experience with service-to-service authentication, internal platform security, or cloud cost management.
• Experience enabling AI platform capabilities or building guardrails for safe AI adoption.
• 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 of annual leave with the option to carry over up to 5 days Impact hours: Up to 2 days of 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: My Mode hybrid-working model with Flex, Office-Based, and Remote options *role-dependent All offices are dog-friendly

Family

Life: For birth parent: 20 weeks of paid parental leave for full-time regular employees For non-birth parents: 12 weeks of paid parental leave for full-time regular employees IVF leave, shared parental leave, and paid emergency parent/carer leave Learn + Grow: Twice-yearly development chats and yearly performance reviews Learning budget Upskilling our employees with company-wide training workshops, materials and resources

Your

Future: Life Insurance (financial compensation of 3x your salary) Pension matching up to 6% of full base salary with

• Aviva
• Depop

Extras: In-office Depop Shop (that's free!) and a packing station with free delivery.

Special milestones are celebrated with gifts and rewards!

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