Build and maintain the company’s platforms using JavaScript, Node.js, Next.js, Express.js, React/React Native, .Net 4.8/9/10, C#, HTML/CSS, and API Restful Services. You will develop both web and mobile applications, collaborating with the team while working independently.

Capital on Tap★3.9 (55)· London

You'll work with C#, .NET, .NET Core, Flutter, Dart, Riverpod, GoRouter, Kotlin, Swift, SQL Server, MongoDB, Firestore, GCP, Azure, and CodeMagic. You'll own backend services for the Banking and Repayments platform and contribute to iOS and Android mobile development.

Rightmove★3.7 (31)· London

Java, Spring Boot, Elasticsearch, Kafka, Gradle, Hibernate, Couchbase, SQL, and Docker. You will build and improve microservices that power Rightmove’s iOS and Android apps, working in a cross-functional team.

You will work with Kotlin, Spring, React Native, TypeScript, PostgreSQL, AWS, Terraform, and Ansible to build backend features for a cross-border fintech mobile app that serves emerging markets. The role focuses on developing consumer-facing features end-to-end in a fast-growing engineering team.

Rightmove★3.7 (31)· London

NodeJS and Java (Spring Boot) on Google Cloud Platform. This role leads cross-functional product development teams building the technology customers use to list properties on Rightmove.

Depop★4.4 (61)· London

This Senior Backend Engineer role uses Scala (primary), TypeScript, Python, Play Framework, Kubernetes, PostgreSQL, DynamoDB, and Kafka. The Shipping Experience team builds and evolves the end-to-end shipping journey for buyers and sellers on Depop’s peer-to-peer circular fashion marketplace.

Proton★5.0 (1)· London

You will work with PHP/Symfony for backend services, React for frontend, Kotlin (Android) and Swift (iOS) for mobile, with a growing shared Rust codebase, on Kubernetes infrastructure. The Payments team builds and scales payment methods and client libraries to enable subscriptions across Proton’s encrypted email, VPN, Drive, Pass, and Calendar products. The team works closely with the Account and Finance teams and across all business units.

Proton★5.0 (1)· London

Engineering Directors at Proton set technical direction and work with PHP (Symfony), Rust, Python, Swift, Kotlin, Jetpack, Typescript, React, C#, SQL, Redis, MySQL, and Ceph across mobile, desktop, web, and backend platforms. They lead engineering for one of Proton’s existing or upcoming products—such as Proton Mail, VPN, Calendar, Drive, or Pass—which provide private, secure, open-source tools to over 100 million users. The role involves managing a team of managers and driving DevSecOps practices.

Rightmove★3.7 (31)· London

You'll work with Java 17+, Spring Boot, Kafka, Elasticsearch, Hibernate, Couchbase, SQL, Gradle, and Docker, building backend services and microservices for Rightmove's property platform. The role involves designing features, owning technical decisions end-to-end, and mentoring junior engineers within a cross-functional team supporting millions of users and thousands of agents.

Rightmove★3.7 (31)· London

You'll work primarily in Java and Spring Boot, operating across frontend, mobile, data, and infrastructure to lead architectural design and standards across Rightmove's consumer product domain—property search, listings, saved searches, maps, and valuations serving millions of users. This principal role involves mentoring senior engineers and tech leads, guiding large cross-team initiatives, and shaping long-term platform direction across approximately 60 engineers in the consumer domain.

JPMorgan★3.9 (20k)· London

You'll work with Java, Spring Boot, Kotlin, DynamoDB, Aurora/MySQL, AWS, Kubernetes, and Kafka on event-driven microservices for J.P. Morgan Personal Investing's mobile and web investment platform serving over 275,000 UK investors. The role involves designing and evolving architecture, owning features end-to-end, writing tests, and driving AI-assisted engineering practices across the team.

JPMorgan★3.9 (20k)· London

You'll work with Salesforce (Service Cloud, Sales Cloud, Marketing Cloud), Apex, Lightning Web Components, SOQL/SOSL, REST integrations, and enterprise AI coding tools. The team builds platforms and standalone products for JPMorgan Personal Investing's customer service, marketing, and operations functions, integrating with internal services to enhance the customer experience for 275,000+ UK investors.

Deliveroo★3.3 (1.5k)· London

You'll work with Go, Ruby/Rails, Python, Scala, or Rust alongside PostgreSQL, Redis, DynamicDB, and ElasticSearch to build Deliveroo's food delivery marketplace serving millions at scale. You'll improve code architecture, lead technical projects, conduct interviews, mentor engineers, and collaborate across teams while solving logistical problems in a three-sided marketplace.

Deliveroo★3.3 (1.5k)· London

You'll work with Go, Ruby, Python, Scala, and Rust to build production systems for Deliveroo's three-sided on-demand delivery marketplace, handling real-time logistics, infrastructure, and marketplace optimization that serves millions of users globally. As a new grad engineer in London, you'll own features end-to-end, improve system architecture, and collaborate across teams while receiving mentorship from senior engineers.

Deliveroo★3.3 (1.5k)· London

You'll design and scale backend services for Deliveroo's real-time food delivery marketplace using Go, Ruby, or Python, working with relational databases like PostgreSQL and NoSQL systems such as Redis and DynamoDB. The role involves improving code architecture, enhancing system reliability through monitoring, and collaborating across teams to support a hyper-local marketplace serving millions of users globally.

Deliveroo★3.3 (1.5k)· London

You'll work with Go, Ruby/Rails, Python, Scala, and Rust to build backend web applications, with experience in PostgreSQL, MySQL, Redis, DynamoDB, and ElasticSearch for data handling. You'll improve code architecture and lead project planning for Deliveroo's three-sided marketplace serving millions of customers, riders, and partners globally, while mentoring engineers and guiding technical decisions across your team.

Deliveroo★3.3 (1.5k)· London

You'll design and build scalable backend services and frontend components using Go, Ruby, Python, and Scala, handling high-traffic workloads (20k+ rpm) with PostgreSQL, MySQL, Redis, DynamoDB, and Elasticsearch. You'll join Deliveroo's engineering team powering a three-sided food delivery marketplace serving millions of customers, riders, and partners globally, leading architectural improvements and mentoring colleagues.