101 to 125 of 130 Kotlin Jobs in England

Principal Android Engineer – Search & Recommendations Experience Team We are looking for a technical leader who will shape the native search and discovery experiences across our global travel platforms. In this role you will architect, design ...

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ ...

faster loading and more intelligent parsing by designing more efficient abstractions and improving our algorithms Ship cloud functions, lightweight backend services, and jobs using Kotlin An Ideal Candidate Should Have Systems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable. … engage or be heads down Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs Preferred Tech Stack: Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform) Prior experience with GCP is a plus What We Offer A fast-growing environment ...

revenue-critical infrastructure - on-call matters here. Tech stack We hire for ability, not a specific tech stack. Most of the team learned Kotlin here: Backend: Kotlin (modular monolith using Http4k, Spring Boot, Exposed, Result4k). Storage: Postgres, BigQuery. AI Platform: Vertex AI, Langsmith, more to come here. ...

Engineering (HealthTech) Cambridge, UnitedKingdom Posted 12 months ago Tech Stack React iOS Swift Java JavaScript Android MongoDB Kotlin Amazon AWS Node.js Setting Quantifiable OKR and Measuring Team Performance You should ideally have worked with the following technologies: Node.JS, React JS, MongoDB, AWS, Swift (iOS), Kotlin/Java ...

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 ...

Senior Java & Kotlin Backend Engineer Location: London (Hybrid - Wednesday office attendance required) Contract: Initial 2 months IR35: Outside IR35 Start Date: ASAP The Role We're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial ...

Lead Software Engineer - Backend Engineering - Java/Kotlin LONDON, LONDON, United Kingdom Job Information Job Identification 210587260 Job Category Software Engineering Business Unit Corporate Sector Posting Date 01/14/2025, 08:19 AM Locations 4 John Carpenter St, London, Greater London, EC4Y 0JP, GB Job Schedule Full … their own path and a pragmatic and iterative approach to achieving our long term goals Technologies We primarily use Jvm based languages (Java/Kotlin) but we also have parts of the platform that use other languages as needed. We look to use Open source when it makes sense ...

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 ...

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. ...

Title: Lead (Kotlin/Java) Location: Sheffield (3 days a week onsite is mandatory) Contract Job Description: Technologies we use in the role (Required): Kotlin, Java, Microservices, REST APIs, SQL/Databases, HTML/JavaScript, Asynchronous messaging/event-driven architectures (Kafka or similar) Proactive person who will ...

Title: Lead (Kotlin/Java) Location: Sheffield (3 days a week onsite is mandatory) Contract Job Description: Technologies we use in the role (Required): Kotlin, Java, Microservices, REST APIs, SQL/Databases, HTML/JavaScript, Asynchronous messaging/event-driven architectures (Kafka or similar) Proactive person who will ...

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 ...

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 Scala/Kotlin Engineer 6-12 months Hybrid - London (2-3 days per week on site) Paying up to £600 per day (Inside IR35) Overview We are supporting a global tier 1 bank on the hire of a Scala/Kotlin Engineer to join a high-performing … delivery of complex features end-to-end Core Requirements Strong experience as a senior backend engineer Proven hands-on experience with: o Scala OR Kotlin (either is acceptable) Strong understanding of: o Type systems o Concurrency o Functional and/or object-oriented programming Experience building distributed backend systems ...

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 ...

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 ...