You will build production mobile apps for iOS and Android using React Native, TypeScript, and integrate AI, natural-language features, Swift, Kotlin, and Python. The venture-backed startup creates AI-powered software that replaces manual workflows for industrial and operational teams.

Lead a small mobile team building iOS and Android consumer products at a client. You will set technical direction across both platforms, work hands-on with code, and drive AI-assisted delivery using skills, agents, and spec-driven development. The role includes line-managing engineers and owning the team’s performance, delivery, and growth.

Lead a small mobile team building consumer iOS and Android products for a client. You will drive mobile architecture, use AI-assisted development tools and agents, and champion spec-driven delivery. This is a hands-on leadership role at a digital consultancy.

You will work with iOS and Android, using AI-assisted delivery tools including reusable skills, agents and spec-driven development. As a hands-on Engineering Manager, you lead a small, autonomous mobile team embedded with a client, building consumer products and line-managing the engineers.

Senior Software Engineer role at Everfox, working with modern C++ on cross-platform desktop (Linux, Windows) and mobile (Android, iOS) apps, plus Java/Kotlin, Swift/Objective-C, Qt, GitLab, Docker, Kubernetes, and Python. You will build and maintain the end-point software layer for the Hardsec product line’s secure browsing and VDI solution, owning design, development, and delivery. You will also coordinate a small team of engineers and manage release planning across multi-platform shipped products.

Smarkets★5.0 (2)· London

Build web and mobile apps with Next.js, React, React Native, TypeScript, Redux, React Query, WebSockets, and REST APIs, using Figma for design and GitLab with Kubernetes for DevOps. You will craft polished interfaces for Smarkets, which operates one of the world’s most sophisticated prediction markets for sports and political events.

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.

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.

Build production-grade cross-platform apps with React Native, TypeScript, and native modules (Swift/Kotlin). You'll design offline-first mobile workflows with AI integration (LLMs, agents) and build backend services (Python a plus). The team is removing manual barriers in industries like aerospace, healthcare, and energy.

Deliveroo★3.3 (1.5k)· London

Lead a full-stack team (~7–8 engineers) building the real-time, back-office workspace used by 30,000+ support agents across Deliveroo, DoorDash and Wolt. The stack includes Go, Python or Node.js (backend), React (frontend), with cloud tooling (Kubernetes, AWS, Datadog) and an in-house chat platform handling tens of millions of conversations monthly.

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.

You'll build production Android apps in Kotlin, integrating AI-powered features like LLM chat, vision, and voice through backend APIs while optimizing performance and reliability for mobile devices. BJAK is developing a proactive AI smart assistant for everyday users focused on multi-step workflows, persistent context, and real-world task completion. The role requires 3+ years Android experience with hands-on AI feature integration and strong async programming skills.

Rightmove★3.7 (31)· London

You'll manage a team delivering secure, scalable cloud platforms and infrastructure supporting hundreds of engineers across mission-critical services at Rightmove, the UK's largest property portal. The role blends cloud operations, platform engineering, security governance, automation, and FinOps, requiring hands-on experience with GKE, Kubernetes, Terraform, service mesh, Kafka, Elasticsearch, IAC, Python, Go, and CI/CD pipelines. You'll lead strategy and execution while mentoring engineers, ensuring reliability, managing cloud costs, implementing governance frameworks, and embedding security controls across the platform.

Apple★4.1 (14k)· London

You will work with Swift, SwiftUI, UIKit, Core ML, MLX, and Foundation Models to help Apple's largest customers build AI-powered business applications across iOS, iPadOS, watchOS, macOS, and visionOS. As a hands-on technical expert, you'll partner directly with customer engineering teams to guide development and deployment of intelligent apps, build reference implementations, and shape best practices for AI adoption on Apple platforms. The role involves collaborating with internal stakeholders, engaging executives, and supporting EMEIA business and education customers.

You'll build fullstack features using React, React Native, TypeScript, Go, Node.js, GraphQL Federation, gRPC, and Kubernetes on Juniper, a GLP-1 weight-management program combining medication with personalized nutrition and clinician-led care. The Shop/Ecosystem squad expands Juniper into new product lines and develops recommendation tools in collaboration with Data Science, working across web and mobile platforms. This is a high-autonomy senior role owning features from design through delivery.

You'll work with React, TypeScript, React Native, GraphQL Federation, Go, gRPC, Pub/Sub, Kubernetes, and GCP on Juniper, a large-scale weight-management program combining GLP-1 medication with personalized nutrition and clinician-led care. As a senior frontend engineer in the Growth squad, you'll own the frontend web platform, design and deliver growth-focused experiments improving retention and conversions, and mentor teammates while influencing best practices across the team.

You'll build fullstack features using React, React Native, Go, Node.js, TypeScript, GraphQL Federation, gRPC, and Kubernetes on Juniper, a large weight-management program combining GLP-1 medication with personalized nutrition and clinician-led care. The Shop/Ecosystem squad expands Juniper into new product lines and services, including a recommendations tool developed with Data Science for web and mobile platforms. You'll collaborate cross-functionally to implement scalable solutions and mentor other engineers in a high-autonomy senior role.

JPMorgan★3.9 (20k)· London

You'll build and maintain web applications for Nutmeg (JPM Personal Investing's UK wealth management platform) using React, HTML5, CSS, JavaScript ES6, Jest/RTL, Webpack/Vite, Docker, Git, Jenkins, and GitHub Actions within a cross-functional team. The role involves delivering product features end-to-end, fixing defects, conducting code reviews, and ensuring accessibility, security, and performance standards across the web ecosystem powered by an internal React design system.

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.

SumUp★3.4 (84)· London

You'll build and maintain backend services for SumUp's neobanking platform using Go, Docker, and Kubernetes, handling critical infrastructure like bank transfers, open banking integrations, and payment processing. The role involves end-to-end ownership of features across a fintech company serving 4 million small businesses globally, requiring strong experience with cloud platforms, SQL/NoSQL databases, and distributed systems in regulated environments.

SumUp★3.4 (84)· London

You'll lead a cross-functional backend, iOS, and Android engineering team building SumUp Consumer, a banking and payments platform for merchants and consumers. The role requires hands-on technical contribution with Go, Kotlin, Python, or similar languages in cloud-native environments (AWS, Docker, Kubernetes), plus 2+ years of proven engineering management experience growing high-performing teams. You'll partner with Product and Design to deliver reliable, scalable features while balancing execution speed with quality.

You'll work primarily in Java with AWS, GCP, Kubernetes (EKS), Terraform, and Postgres to build and maintain payment integration systems. The Payment Schemes team handles Starling Bank's mission-critical payment processing, owning integrations with Faster Payments, BACS, and SWIFT connectivity that ensure payments are processed correctly and reliably.

You'll work across AWS and GCP building cloud security infrastructure and tooling, with a focus on Identity and Access Management, automated certificate management, and security-as-code within Kubernetes and ECS environments. The role requires strong programming skills (preferably Golang) and deep Infrastructure-as-Code expertise in Terraform to create scalable, developer-friendly security services for Starling Bank, a UK digital bank with over 3,000 employees.

Deliveroo★3.3 (1.5k)· London

You'll design and build production-grade machine learning systems for Deliveroo's search and recommendations platform using Python, PyTorch or TensorFlow, working with recommendation systems, NLP, ranking algorithms, and generative AI. The New Verticals Personalisation team powers customer discovery across grocery, convenience, and retail delivery categories within DoorDash's three-sided marketplace. You'll provide technical leadership across multiple product areas, mentor junior engineers, and help shape product strategy alongside engineering and product leaders.