151 to 175 of 180 Kotlin Jobs in the UK

Mobile Development, iOS, Android, Claude AI, Cursor, AI, Agentic AI, Swift, Kotlin, CI/CD for mobile (Xcode Cloud, Bitrise etc), Machine Learning, ML, API's, REST NEW JOB ARRIVED AND WHAT A BRILLIANT OPPORTUNITY IT IS TOO. Permanent. Hybrid. Must be UK-based and happy to travel … help the next stage of its business growth thrive. A strong hands-on background of Mobile Development is needed across both Swift and Kotlin ecosystems. Management/Leadership experience also essential. The role will help define the technical vision for my client's mobile platform, adopting agentic AI tools ...

maintain mobile client components that capture and report listening and user behavior signals across Spotify. Build high-quality, well-tested, and well-documented Kotlin code that contributes to business-critical datasets used for royalty reporting, analytics, experimentation, and personalization. Collaborate with engineers across Android, iOS, backend, and data teams … software quality. Contribute to a culture of continuous learning, knowledge sharing, and technical excellence. Qualifications You have experience developing Android and iOS applications using Kotlin with Swift or Objective-C. You know how to build maintainable, scalable, and well-tested software systems. You are comfortable working within large codebases ...

workflows, including build, test, and deployment pipelines for containerised applications. Collaborate with development teams to support the hosting, debugging, and performance of Java/Kotlin and Python‐based services. Identify and address platform‐level technical debt, contributing to a roadmap of incremental improvements. What you bring. Kubernetes at production … multiple environments. GitHub Actions, building and maintaining CI/CD pipelines for containerised workloads. Application‐layer awareness, ability to support and troubleshoot Java/Kotlin and/or Python services running in containers. Strong operational mindset, with experience owning incident management, on‐call frameworks, and post‐incident review processes. ...

Senior Product Engineer, React Native Location: Nine Elms, London. Full time, hybrid with at least 3 days a week on site. You’ll need the right to work in the UK and be based in ...

Salt Digital Recruitment is seeking a Senior Kotlin Software Engineer for an investment banking client in London. This hybrid role involves developing backend services in a fast-paced environment, focusing on high-quality engineering and collaboration. The ideal candidate will have strong Kotlin development experience, skilled ...

Digital is seeking a Contract Senior Java/Kotlin Engineer to build robust JVM applications using Test Driven Development and Pair Programming, with a strong emphasis on design and continuous improvement. You will mentor other developers and help shape architecture decisions within an agile, cross-functional team. Based ...

Solutions is seeking a Mobile Head in London to lead a small two-developer team. The role requires hands-on expertise in Swift and Kotlin and a track record of leadership in technical teams. You will define the mobile tech vision, implement best practices, and integrate AI tools ...

seeking a Mobile Head to lead a small technical team in London. This role requires a hands‐on developer with expertise in Swift and Kotlin, alongside leadership experience. The position involves defining the technical vision for mobile platforms, integrating agentic AI tools, and ensuring best practices across development. ...

closely with Product, Design, and Engineering partners. You'll drive innovation, ensure scalable and resilient Android experiences, and contribute to platform initiatives such as Kotlin Multiplatform and Jetpack Compose, while #J-18808-Ljbffr ...

Backend Engineer (Java/Kotlin/Spring Boot) Must have Java, Kotlin, Spring Boot and startup experience. Unfortunately sponsorship is not available. London Hybrid (1 day per week in the office) We're partnering with a fast-growing, venture-backed SaaS company that is scaling its engineering team … building high-quality products with real ownership and impact. Essential Requirements To be considered, you must have: Commercial experience with Java Commercial experience with Kotlin Strong experience building applications with Spring Boot Previous experience working in a startup, scale-up, founding team or stealth startup environment These ...

Decide when to use hybrid vs fully native approaches Lead architecture, spikes, and proof-of-concepts Define integration patterns between React Native, Swift, and Kotlin Set standards for packaging, versioning, and native module bridging Partner with iOS/Android architects on cross-platform design decisions Drive experimentation with WebView … What You Bring Strong production experience with React Native at scale Excellent JavaScript/TypeScript and modern React knowledge Working knowledge of Swift and Kotlin Experience integrating React Native into native mobile apps Strong understanding of mobile performance and platform constraints Experience in complex, multi-team engineering environments Bonus ...

Equity Derivatives front office. You’ll lead and inspire a high-performing, globally distributed engineering team, while staying hands on with solution design and Kotlin development. You’ll set the standard by leading from the front bringing proven experience building, deploying and supporting large-scale EQD pre-trade platforms … high-performing, globally distributed engineering team, with a strong focus on mentoring and coaching. Stay hands-on with architecture and design, and contribute through Kotlin coding and code reviews where it adds most value. Drive transformation and modernisation across the pre-trade platform, improving scalability, resilience and time ...

engineers with an interest in front‐end development using React and TypeScript, as well as those passionate about building highly scalable backend services with Kotlin and AWS, leveraging advanced technologies such as generative AI and machine learning. This role offers end‐to‐end ownership, spanning technical design, implementation … globe. Key Job Responsibilities Deliver, design, build, test, and operationally support product features, writing both client‐ and server‐side code in React, TypeScript, Kotlin and Elasticsearch, using AWS services. Customer obsession – develop an understanding of our advertising customers, from marketing managers to marketing directors and brand owners. Advocate what ...

engineering excellence. The role is based in London and the team is international. What you will do Design, build, and operate backend services in Kotlin and Python that power our trading products, from core trading workflows to client-facing APIs. Develop and improve services for order management, market data … technical decisions, writing clean, maintainable code and sharing knowledge across the team. What you will need Professional experience building backend services, ideally in Kotlin and/or Python. Solid experience designing and building backend services and REST APIs; experience with WebSockets or other real-time streaming protocols such ...

from backend services to user‐facing tools used by merchants and internal teams. Design and implement scalable backend services, working with technologies such as Kotlin, Python, and Go. Develop high‐quality web applications using React , focused on usability and performance. Take ownership of large, cross‐team initiatives , driving them … Core requirements Strong full‐stack engineering experience , with a solid backend foundation. Strong experience with React and building product‐facing web applications. Experience with Kotlin, Python, and Go in production environments is strongly preferred. Proven ability to take ownership in ambiguous environments , driving initiatives from idea to delivery. Experience ...

Principal Product Engineer, React Native Location: Nine Elms, London. Full time, hybrid with at least 3 days a week on site. You'll need the right to work in the UK and be based in ...

Senior Kotlin Engineer (XP, GCP) – Investment Banking – London/Hybrid Daily rate: £600 - £800 (inside IR35) Duration: 6 months Start: ASAP My client is looking for an experienced Senior Kotlin engineer to support and extend a cloud-hosted platform used for bookbuilding issuances within Investment Banking Capital Markets. … platform in production, using incidents and defects as opportunities to improve system design and resilience Qualifications Strong commercial experience building backend services using Kotlin Experience with event‐sourced and event‐driven architectures Deep familiarity with XP practices, including mob programming as a primary way of working, test‐driven development ...

Spotify in London is seeking a mobile engineer to develop Android and iOS components in Kotlin, contributing to data-heavy royalty reporting and personalization. You will collaborate with Android, iOS, backend and data teams to deliver end-to-end solutions, while improving architecture and system reliability. The role emphasizes ...

partner with Product, Design, and Engineering to ensure scalable, resilient, and customer-focused Android solutions. You will work within an inclusive, agile environment, leveraging Kotlin, modern Android libraries, and cross-functional collaboration to ship updates that millions of #J-18808-Ljbffr ...

Equity Derivatives front office. You’ll lead and inspire a high-performing, globally distributed engineering team, while staying hands on with solution design and Kotlin development. You’ll set the standard by leading from the front bringing proven experience building, deploying and supporting large-scale EQD pre-trade platforms … high-performing, globally distributed engineering team, with a strong focus on mentoring and coaching. Stay hands-on with architecture and design, and contribute through Kotlin coding and code reviews where it adds most value. Drive transformation and modernisation across the pre-trade platform, improving scalability, resilience and time ...

management role for a builder-leader. You will lead a team of strong staff and senior engineers through a critical transition: evolving from a Kotlin-first SDK to a hybrid architecture that makes Python a first-class citizen for agentic development. You will own delivery of the platform roadmap … drive decisions. Own the team's cost and resourcing decisions: LLM spend, infrastructure costs, headcount. For more context, our tech stack currently includes AWS, Kotlin, Python, Kubernetes. LiteLLM, BrainTrust, Temporal, LLM APIs and more. You do not need to be an expert across all of these, but need enough ...

Fairygodboss is looking for a Senior Lead Software Engineer (Platform) to set technical direction across squads, ensuring the implementation of robust engineering standards and best practices. The role involves developing secure, high-quality code and ...

Cera is seeking a senior engineer to help drive a Kotlin-based platform used by NHS pathways and local authorities. You will shape engineering direction for a live, full-stack Kotlin platform, with autonomy of a startup and scale of a major care provider behind you. You will ...

Salt Digital Recruitment is seeking a Senior Kotlin Engineer in London/Hybrid to support and extend a cloud-hosted platform for Investment Banking. The role emphasizes collaboration in a high-caliber engineering team and follows Extreme Programming practices. The ideal candidate will have strong experience in Kotlin ...

Reach Extension team. You will own end‐to‐end features, design, implement, test, and operate client‐ and server‐side components using React, TypeScript, Kotlin and Elasticsearch on AWS, building scalable ad products for global customers. You’ll collaborate with UX designers, product managers and engineers across partner teams, iterate ...