351 to 375 of 480 Kotlin Jobs in the UK

Senior Android Software Engineer - London

Location
Greater London, England, United Kingdom
senior engineer, you\'ll collaborate closely with product, design, and engineers across Proton to build and ship high-quality Android experiences using Kotlin, Jetpack Compose, and an increasingly shared Rust core. You\'ll take end-to-end ownership of your work and help define what "great" looks like … privacy-focused consumer products at scale. Responsibilities Collaborate with product, design, and engineering teams to build and ship Android experiences using Kotlin, Jetpack Compose, and Rust Take end-to-end ownership of features from scoping and technical design through delivery and iteration Contribute to maintainable, scalable, and testable mobile ...

Senior Software Engineer

Hiring Organisation
Oscar Technology
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
product further. You'll work across our data integration platform and our open-source schema language and ecosystem. What You'll Work On Mostly Kotlin backend, but everyone touches the full stack: the integration platform (streaming pipelines, query execution, API composition, schema resolution, running in production at real financial … Spring AI (greenfield work orchestrating integrations autonomously); and the frontend (mainly Angular, some React, no specialism required). What We're Looking For Kotlin, or strong modern Java 17+ with a willingness to learn; reactive streams experience (Flux, Mono, coroutines, backpressure); schema/type thinking (OpenAPI, Avro, Protobuf ...

Senior AI Engineer

Location
Greater London, England, United Kingdom
will work directly with business departments to develop practical, value-adding AI solutions. From a technology perspective, we work with Python, Java/Kotlin, Angular, Git, Docker, and Kubernetes, as well as current AI models through Vertex AI and Azure AI Foundry. The role offers you significant creative freedom … Designing, developing, and optimizing high‐quality, scalable services – from classic backend APIs to AI‐powered applications Implementing full‐stack solutions using Java/Kotlin, Angular, and Python – incorporating AI components and modern frameworks Taking a leading role in shaping our long‐term AI and software architecture to ensure future ...

Senior AI Engineer

Hiring Organisation
Berenberg
Location
London, United Kingdom
Salary
£ 80 K
will work directly with business departments to develop practical, value-adding AI solutions. From a technology perspective, we work with Python, Java/Kotlin, Angular, Git, Docker, and Kubernetes, as well as current AI models through Vertex AI and Azure AI Foundry.The role offers you significant creative freedom … Designing, developing, and optimizing high-quality, scalable services – from classic backend APIs to AI-powered applicationsImplementing full-stack solutions using Java/Kotlin, Angular, and Python – incorporating AI components and modern frameworksTaking a leading role in shaping our long-term AI and software architecture to ensure future-readiness ...

Software Engineer III, Full Stack, Publisher Inventory

Location
Greater London, England, United Kingdom
deliver seamless end-to-end features. Write robust, well-tested, and high-performance code, ensuring high quality and reliability across our platform.### Skills Required* Kotlin* C++* TypeScript* Dart* Angular* Java* APIs* SDKs* LLM APIs* Generative AI### Tags:UKLondonAngular DeveloperFlutter DeveloperShare Job:Application planning## What to evaluate before applying### Visa … opening.Google profile### Interview preparation* Experience signal: Mid level experience. Minimum 2 years of experience with full stack development, across back-end such as Kotlin, C++ codebases, and front-end experience including TypeScript or equivalent. 2 years of experience with software development in one or more programming languages ...

Senior Android Developer

Location
Greater London, England, United Kingdom
/ML Technologies and Professional services in the UK and EU market. Job Description Overview We are seeking an experienced Android Developer with strong Kotlin expertise and a deep understanding of modern mobile development practices. The ideal candidate will be highly collaborative, proactive, and committed to delivering high-quality … eligible for BPSS clearance will be considered. Required Skills & Experience Eligibility for BPSS clearance . 5+ years of hands-on Android development experience using Kotlin and Android Studio . Strong understanding of Android design principles , UI/UX guidelines , and best practices. Passion for mobile development with a commitment ...

Android Engineer

Hiring Organisation
Zopa
Location
London, United Kingdom
Salary
£ 80 K
performant, reliable, and delightful to use.While the app today is built with React Native, we are expanding our native capabilities in Swift and Kotlin and are transforming the Android experience with a move toward a more fully native approach. This is an exciting opportunity to be part of that … engineers to design, build, and evolve the Android platform.Play a key role in migrating the app from React Native to native Android, building in Kotlin with strong architectural foundations and industry best practices.Partner with the wider mobile engineering community, including React Native developers, to define best practices for native ...

Software Engineering Manager

Location
Glasgow, Scotland, United Kingdom
collaboration skills Desirable Experience of leading and managing software development teams Previous working experience in an Agile environment (Scrum) Java and/or Kotlin Struts and Sprint Boot REST APIs SQL (preferably MSSQL) Vue, Angular, React, HTML/CSS AndroidX, Compose, Room Gradle CI/CD using GitHub Actions … XSLT, Saxon, JAXB Nice to have Distributed event streaming platforms (Azure Event Hubs, Apache Kafka) OAuth 2.0, OpenID Connect, JWT Google Web Toolkit (GWT), Kotlin multiplatform Benefits Competitive salary and bonus schemes Two weeks additional pay per year (holiday bonus) 25 days holiday entitlement + bank holidays Attractive defined ...

Senior Software Engineer

Hiring Organisation
Apex Systems
Location
London Area, United Kingdom
Software Development Engineer II Location – London, UK Type : Onsite – 5 days per week Duration : 12 Months Start Date : ASAP Requirements: Top Must-Haves: Java, Kotlin and TypeScript Job Description: We are hiring an L5 Software Development Engineer (contractor) in London to join the Prime Video Edge Platform team. … Efficiency and maintaining availability and security Participate in on-call rotations and operational excellence practices Basic Qualifications Professional software development experience Proficiency with Java, Kotlin and TypeScript Experience designing and building distributed systems or backend services Experience with cloud infrastructure (AWS — e.g., Ec2, NLB, ElastiCache, Lambda, DynamoDB) Experience with ...

Senior Software Engineering Manager (Active Savings)

Location
Bristol, England, United Kingdom
collaboration, and promote psychological safety to help teams navigate change. Hands-on knowledge of secure API design, authentication services, and mobile development (Swift/Kotlin, React Native). Knowledge and experience of modern DevOps tools and practices. Exposure to Figma and Vercel is a great plus. Experience leading engineering … reputable university is highly desirable. Tech Stack Java/Springboot/Gradle/HTML/GraphQL/Oracle/MyBatis/Swift/Kotlin Cucumber/Selenium/RestAssured/Jenkins Linux/Windows/AWS/Terraform IaC/Kubernetes Interview Process This will be a 3-stage ...

Senior Principal Software Engineer (Java)

Location
Manchester, England, United Kingdom
intelligent rate‐limiting, and solving complex concurrency challenges (e.g., database locks and connection starvation). Deliver thought leadership and coding excellence across Java/Kotlin, ensuring seamless integration between backend microservices and UI components (including resolving complex CORS and distributed edge proxy requirements). Mentor and elevate engineers across … agentic programming patterns and LLM‐assisted workflows—to accelerate platform engineering and developer velocity. Deep expertise in backend JVM languages (Java and/or Kotlin) with a strong understanding of distributed systems internals. Proven track record of delivering API‐first infrastructures, API Gateways (e.g., Traefik), and edge routing solutions ...

Lead Site Reliability Engineer

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 80 K
mortem leadership. Work as a core member of the software engineering team, participating in daily standups and design discussions.Contribute directly to the codebase (Java, Kotlin, Python) to implement reliability improvements, performance optimisations, bug fixes, and automation.Lead the design and rollout of modern SRE patterns across trading systems, including automated … implementing observability frameworks for mission critical systems.Proven ability to lead incident response and drive long term remediation.Solid programming skills in Python, Java, or Kotlin, with the ability to contribute production grade code. Experience with microservices, distributed systems, and event driven architectures.Strong understanding of CI/CD pipelines, automated testing ...

Principal Software Engineer - Full Stack - AI

Location
Manchester, England, United Kingdom
Drive best practices across our full stack, guiding the development of responsive frontend applications (React/TypeScript) and robust, scalable backend services (Python, Java, Kotlin, or Node.js). LLM Observability & Reliability: Establish robust LLM observability, evaluations, and caching, implementing latency optimisations and comprehensive monitoring (logging, usage tracking, agent behaviour … production environments. Full‐Stack Expertise: High proficiency in modern frontend frameworks (specifically React and TypeScript) and robust backend development languages (Python, Java/Kotlin, or Node.js). GenAI & MCP Knowledge: Deep understanding of LLM APIs, prompt engineering, agentic/multi‐agent architectures, and building/consuming Model Context Protocol ...

Lead Site Reliability Engineer

Location
Greater London, England, United Kingdom
leadership. Work as a core member of the software engineering team, participating in daily standups and design discussions. Contribute directly to the codebase (Java, Kotlin, Python) to implement reliability improvements, performance optimisations, bug fixes, and automation. Lead the design and rollout of modern SRE patterns across trading systems, including … observability frameworks for mission critical systems. Proven ability to lead incident response and drive long term remediation. Solid programming skills in Python, Java, or Kotlin, with the ability to contribute production grade code. Experience with microservices, distributed systems, and event driven architectures. Strong understanding of CI/CD pipelines ...

Lead Site Reliability Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
leadership. Work as a core member of the software engineering team, participating in daily standups and design discussions. Contribute directly to the codebase (Java, Kotlin, Python) to implement reliability improvements, performance optimisations, bug fixes, and automation. Lead the design and rollout of modern SRE patterns across trading systems, including … observability frameworks for mission critical systems. Proven ability to lead incident response and drive long term remediation. Solid programming skills in Python, Java, or Kotlin, with the ability to contribute production grade code. Experience with microservices, distributed systems, and event driven architectures. Strong understanding of CI/CD pipelines ...

Lead Site Reliability Engineer

Location
Westminster, West End, United Kingdom
leadership. Work as a core member of the software engineering team, participating in daily standups and design discussions. Contribute directly to the codebase (Java, Kotlin, Python) to implement reliability improvements, performance optimisations, bug fixes, and automation. Lead the design and rollout of modern SRE patterns across trading systems, including … observability frameworks for mission critical systems. Proven ability to lead incident response and drive long term remediation. Solid programming skills in Python, Java, or Kotlin, with the ability to contribute production grade code. Experience with microservices, distributed systems, and event driven architectures. Strong understanding of CI/CD pipelines ...

Principal Software Engineer - Full Stack - AI

Hiring Organisation
Anaplan
Location
York, North Yorkshire, United Kingdom
Salary
£ 70 K
Drive best practices across our full stack, guiding the development of responsive frontend applications (React/TypeScript) and robust, scalable backend services (Python, Java, Kotlin, or Node.js).LLM Observability & Reliability: Establish robust LLM observability, evaluations, and caching, implementing latency optimisations and comprehensive monitoring (logging, usage tracking, agent behaviour).Operational … features in production environments.Full-Stack Expertise: High proficiency in modern frontend frameworks (specifically React and TypeScript) and robust backend development languages (Python, Java/Kotlin, or Node.js).GenAI & MCP Knowledge: Deep understanding of LLM APIs, prompt engineering, agentic/multi-agent architectures, and building/consuming Model Context Protocol ...

Senior Product Security Engineer

Hiring Organisation
Blockchain
Location
London, United Kingdom
Salary
£ 80 K
secure coding patterns, and provide pragmatic remediation guidance.Advanced Code Auditing: Conduct deep-dive manual and automated code reviews on highly sensitive Java and Kotlin backend Pull Requests.Security Debt & Remediation Negotiation: Produce data-driven Security Debt packs and negotiate remediation into engineering roadmaps. You will negotiate remediation timelines with Product … GHAS, Snyk, or similar. You should be intimately familiar with the SARIF ecosystem and ASPM workflows.Expert-level ability to audit and propose fixes in Kotlin/Java, TypeScript/JS, Python, and familiarity with containerised deployments (Kubernetes).Strong threat modeling experience and pragmatic architecture guidance for high-stakes financial ...

Senior Product Security Engineer

Location
Greater London, England, United Kingdom
secure coding patterns, and provide pragmatic remediation guidance. Advanced Code Auditing: Conduct deep-dive manual and automated code reviews on highly sensitive Java and Kotlin backend Pull Requests. Security Debt & Remediation Negotiation: Produce data-driven Security Debt packs and negotiate remediation into engineering roadmaps. You will negotiate remediation timelines … Snyk, or similar. You should be intimately familiar with the SARIF ecosystem and ASPM workflows. Expert-level ability to audit and propose fixes in Kotlin/Java, TypeScript/JS, Python, and familiarity with containerised deployments (Kubernetes). Strong threat modeling experience and pragmatic architecture guidance for high-stakes ...

Software Engineer III, Android Studio, Intelligent Eyewear Tooling

Location
Greater London, England, United Kingdom
Software Engineer III, Android Studio, Intelligent Eyewear Tooling Mid Experience driving progress, solving problems, and mentoring more junior team members; deeper expertise and applied knowledge within relevant area. Google London, UK X In most instances ...

Full Stack Engineer (Kotlin and/or Python) – VP

Location
Greater London, England, United Kingdom
additional information, please review .**Full Stack Engineer (Kotlin and/or Python) – VP**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+ … aspirations.**Technology Skills Desired:*** **Backend Expertise** (Mandatory for Backend Role, Highly Desired for Full Stack): + Strong proficiency in modern backend languages such as Kotlin and/or Python. + Extensive experience with microservices architecture and developing scalable, resilient services. + Demonstrated experience deploying and managing applications within containerization ...

Senior Backend Engineer (Java/Kotlin) – Cloud-Native

Location
Greater London, England, United Kingdom
Fractal Analytics Inc. in London is seeking a Senior Software Engineer with deep expertise in Java and Kotlin to design, build, and support scalable backend systems for banking and financial services. You will lead technical initiatives, drive architectural decisions, and mentor engineers while delivering resilient, production-ready microservices ...

Senior Lead Software Engineer - Backend Engineering - Java/Kotlin

Location
Greater London, England, United Kingdom
security expectations; experience coaching senior engineers/leads on compliant usage patterns and controls. 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 ...

Lead Software Engineer - Backend Engineering - Java/Kotlin

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
adherence to resiliency and security expectations; experience coaching engineers on safe, compliant adoption within delivery practicesTechnologies: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 ...

Full Stack Engineer

Hiring Organisation
Randstad
Location
London, United Kingdom
Salary
£ 60 K
global investment bank, designing and scaling cloud-native applications within the risk management space. You will drive end-to-end development using modern Java, Kotlin, React, and cloud technologies while working alongside cross-functional engineering teams.Mandatory SkillsCore Tech: Java, Kotlin, React, AWS Lambda, KubernetesKey ResponsibilitiesArchitecture & Development: Build performant … frontend and backend systems using Java, Kotlin, ReactJS, and modern state management tools (Redux/Context API).API & Event Integration: Design RESTful APIs, gRPC services, and event-driven architectures leveraging Kafka and Flink for real-time data processing.Cloud & DevOps: Deploy and maintain cloud-native applications on AWS and Kubernetes ...