Trabajos kotlin en SheffieldCrear alertas

Job Title: Android Developer Location: UK Experience: 2–5 years Education: Bachelors in Science (IT/Computer Science/Engineer) Employment Type: Full-Time Information Tech Consultants Ltd (ITC) is a London-based mobile app development consultancy, specializing in Android, iOS and cross platform solutions. With over 35,000 mobile development hours accumulated and clients across the UK, it’s safe to say we know apps well! Each of our practice areas leverages specialized expertise, methodologies, and software to ensure that we deliver the most beneficial solutions to our clients. Roles and Responsibilities: • Design, develop, and maintain Android applications., • Collaborate with cross-functional teams to define, design, and ship new features., • Troubleshoot and debug applications to optimize performance., • Ensure the quality of the applications through unit testing and code reviews. Required Skills: • Proficiency in Java/Kotlin. JavaScript and Android SDK., • Experience with RESTful APIs and third-party libraries., • Familiarity with version control systems like Git., • Understanding of mobile UI/UX Designs. Qualifications: • Bachelor’s degree in Computer Science or related field., • Previous experience in Android Development is preferred.

Lead React Native Engineer | React Native, Expo, Typescript | Up To £90k, Remote (UK) I’m working with a well-funded UK tech company at an exciting stage of growth as they scale their engineering team and mobile platform. They’re looking for a Lead React Native Engineer to take ownership of their mobile applications across iOS and Android, shaping architecture, performance standards, and release processes as the platform evolves. This is a senior individual contributor role with strong technical influence, working closely with backend, product and design to deliver high-quality mobile experiences used at scale. Key experience: • Strong production experience with React Native and TypeScript, • Experience building and shipping apps with Expo, • Deep understanding of React hooks, state management, and performance optimisation, • Experience architecting and scaling mobile applications, • High bar for engineering quality, testing, and reliability Nice to have: • Modern React Native architecture (Fabric, JSI, TurboModules), • Native integrations (Swift / Kotlin), • Mobile CI/CD tooling (Fastlane, GitHub Actions, Bitrise), • Observability tools such as Sentry or Firebase Remote-first within the UK Salary - £80-90k Lead React Native Engineer | React Native, Expo, Typescript | Up To £90k, Remote (UK)

About Kerno Kerno is building the validation engine for AI-native backend development. As AI agents like Cursor and Claude Code become central to how developers write code, the need for fast, reliable validation grows with it. Kerno automatically generates, runs, and maintains validation tests (covering integration, performance, security, and resiliency) directly in the IDE or CLI, catching breaking changes and unintended side effects before code is merged. We're a small, remote and fast-moving team solving a hard problem at the intersection of developer tooling, code analysis, and AI. The Role We're looking for a Staff AI Backend Engineer to help shape the core of our product. You'll work across the stack, from the validation and test generation agents to the backend platform and infrastructure. This is a high-impact role where your decisions directly affect the product our users rely on every day. What You'll Do • Design and build core components of Kerno's validation engine, code indexation, test generation and execution, • Work building AI agents that are in charge of test generation and code analysis, • Build and improve the platform layer local and/or remote environment orchestration, • Own features end-to-end: scoping, design, implementation, testing, and rollout, • Collaborate closely with the founding team on technical direction and architecture, • Help extend language and framework support as we grow beyond our current stack, • Contribute to the reliability and performance of a system that developers depend on for fast feedback What We're Looking For • 8+ years of professional backend development experience, with strong proficiency in Kotlin (or another JVM based language), • Experience designing and building distributed systems or complex backend services, • Comfortable working with multiple languages, we use whatever is the best tool for the right solution, • Strong understanding of testing methodologies, CI/CD pipelines, and developer tooling, • Experience with or strong interest in AI agents development, • Familiarity with containerization and local environment orchestration (Docker, etc.), • Experience working with databases, • Ability to work autonomously in a remote environment and communicate clearly in writing, • Experience building developer tools, IDE extensions, or CLI tooling, • Experience with message brokers (Kafka, RabbitMQ), • Familiarity with LLM APIs and prompt engineering in production contexts, • Experience at an early-stage startup Why Kerno • Hard problems: You'll work on code analysis, AI-powered test generation, and real-time validation. This isn't a simple CRUD API., • High impact: Small team, direct influence on product direction and architecture, • Remote-first: Work from wherever you do your best work, • Quarterly off-sites: Meet your colleagues in person once a quarter, • AI-native: We're not adding AI as an afterthought. It's core to everything we build., • Growing market: AI assisted development is exploding. The need for validation tooling is growing with it.

Job Description: iOS Engineer at everyLIFE Position Type: Permanent. Location: UK-based Remote. Head Office located in Farnborough, Hampshire. Benefits include: 25 days holiday + 3 additional days over Christmas, early finish Friday, private medical insurance, life insurance, Cycle-scheme, free non-fiction book scheme. Working Hours: Full time Following the successful launch of PASSgenius™, our cutting‑edge suite of AI, data, and automation tools, we’re entering an exciting period of rapid growth. To accelerate what comes next, we’re searching for a full‑time iOS Engineer to join our fast‑moving, feature‑rich app team. The Role • Be part of a team of highly skilled engineers to deliver polished features on consistent basis in a high pace environment. We deploy code every two weeks to thousands of users., • Directly responsible for the development and deployment processes – make sure that the features are shipped optimally, and product stays healthy once they hit production., • Design, review, write and test code. This is hands-on engineering role, and you will be directly involved in the design and development of new features, writing, reviewing and testing code., • Insist on the highest standards and create functional and engaging features that will delight our users., • Provide feedback to teammates to make your team the best version of itself. Desired Skills • Bachelor’s degree in Computer Science or related field, or equivalent experience, • 4+ years of experience with iOS mobile app development, • Good working knowledge of iOS platform, Swift, GRDB, SwiftUI, Combine, • Good communication skills and the ability to work effectively in a remote team environment, • Attention to details – any code that makes it into the product directly impacts the lives of people being cared for, • Strong computer science fundamentals in object-oriented design, algorithms and data structures, • Self-starter, analytical and creative, • Strong team player with a positive attitude, • Experience writing clean, testable, high-quality code, • Good understanding of object oriented and SOLID principles, and clean code architecture, • Experience writing apps using The Composable Architecture, • Good experience with writing unit tests, • Familiar with git and/or git-flow, Bitbucket, JIRA, Confluence, Bitrise, Bugfender Bonus • Experience in Agile methodologies such as Scrum or Kanban, • Good knowledge of test automation using XCUITest, • Good understanding of material design and offline first UX/UI, • Knowledge of Android platform, Kotlin, Room, Coroutines, Koin Our mission is to create effective tools and services that release the potential of care teams. Established in 2014, everyLIFE Technologies is a fast-growth SaaS provider primarily to the UK social care market. We exist to support care services to be the best that they can be. We design, build, release, manage and support software and mobile applications that are crucial parts of the care being given to tens of thousands of people across the UK. We must get it right, every day! Our ideal teammates are thoughtful, humble, curious, achievement-oriented professionals who can both zoom into the details and zoom out to embrace the big picture. We are customer-led and always aim for the highest standard. We believe in being transparent in all our dealings; acting fairly, openly, and honestly in everything we do. Please note that this is a UK based role, and we are only able to accept applicants with the right to live and work in the UK without the need for sponsorship. If you are on a visa and interested in applying for this role, please contact us for further information. If you have any questions, please email Due to the high volume of applicants that we receive, we cannot always guarantee that you will receive a response.

A growing software business is hiring a Software Engineer to support continued growth and rising demand for its platform. Software Engineer Remote | Up to £60,000 | Java or Kotlin | Spring Boot This is a back-end focused role, ideal for an engineer who enjoys building reliable, scalable applications and wants to work on software used by well-known customers. You will be involved in the design, development and delivery of new features, as well as improving core products in a fast-moving environment. The role is fully remote, with the option to attend the Newbury office around once a month if desired. What you will be doing • Developing back-end applications using Java or Kotlin, • Building software with Spring Boot, • Designing and delivering new features, • Enhancing existing products and platform capability, • Working across the full software development lifecycle, • Supporting QA and UAT feedback through to release, • Collaborating with project, account and delivery teams to understand requirements and turn them into practical solutions, • Writing clean, maintainable, high-quality code What they are looking for • Strong commercial experience in software engineering, • Good hands-on experience with Java or Kotlin, • Strong experience with Spring Boot, • A back-end development background, • Experience building scalable systems in a modern development environment, • Strong problem-solving skills and attention to detail, • Ability to work independently in a remote setup Nice to have • Microservices experience, • Docker or Kubernetes, • RabbitMQ or other messaging tools, • MongoDB or other NoSQL database experience, • Experience in telecoms, billing or transaction-led systems Package • Up to £60,000, • Remote working, • Optional monthly office time in Newbury, • 24 days holiday plus birthday off, • Private medical, • Life assurance, • Critical illness cover, • Employee assistance programme, • Contributory pension Apply now or contact Chris Lynes at Spectrum IT Recruitment

📱 Mobile Application Developer | Building the Future of Mobile !! IMMEDIATE JOINERS !! Junior Android Developer Location : London Work mode : Onsite Experience: 2–5 years CITIZEN & DEPENDENTS Are you a mobile enthusiast who lives for clean code and smooth UI transitions? We are looking for a Junior Android Developer with 1+ years of professional experience to join our engineering team. At this stage in your career, you’ve moved past "Hello World" and are ready to tackle real-world scalability, complex APIs, and the occasional Gradle headache. If you’re eager to learn from seniors while making a tangible impact on a product used by thousands, let’s talk. 🛠️ What You’ll Do • Feature Development: Collaborate with our product and design teams to build and ship high-quality features for our Android application., • Code Quality: Write clean, maintainable code in Kotlin (and some legacy Java) while following modern architectural patterns (MVVM/MVI)., • UI/UX Implementation: Turn Figma designs into pixel-perfect layouts using Jetpack Compose or XML., • Bug Squashing: Identify, debug, and fix performance bottlenecks and edge-case crashes., • Continuous Learning: Participate in code reviews, contribute to technical documentation, and stay up-to-date with the latest Android Jetpack libraries. ✅ What You Bring • Experience: 1+ years of professional experience in Android development (internships count if they were high-impact!)., • Language Proficiency: Strong foundations in Kotlin and a solid understanding of Java., • Android SDK: Familiarity with Activities, Fragments, Services, and Lifecycle components., • Networking: Experience working with RESTful APIs using Retrofit and handling JSON data., • Tooling: Proficiency with Git and a working knowledge of Android Studio., • Mindset: A "can-do" attitude and the humility to ask for help when a bug just won't budge. 🌟 Bonus Points if You Have: • A published app on the Google Play Store (send us the link!)., • Experience with Dependency Injection (Hilt/Dagger)., • Familiarity with Coroutines and Flow for asynchronous programming., • A passion for Material Design 3. 🚀 Why Join Us? • Mentorship: Work directly with Senior Developers who actually enjoy teaching., • Tech Stack: We stay on the cutting edge—no ancient legacy codebases here., • Growth: A clear path to becoming a Mid-level Developer within [Timeframe]., • Perks: [Insert Perks: e.g., Remote-first culture, Learning stipend, Health benefits].

Lead Android Developer - Hybrid - Sussex Daily rate: £500 - £700 (inside IR35) Duration: 6 months Hybrid: 2 days per week on site (mandatory Tues, Wed) Start: ASAP My client is looking for a Lead Android Engineer to join on a freelance basis. You will be responsible for leading the design, development, and delivery of the mobile application on Android. This role combines hands-on engineering leadership with solution architecture responsibilities, ensuring scalable, secure, and high-performing mobile solutions. The individual will lead distributed teams, including offshore engineers, while collaborating closely with Product, Architecture, and Backend teams. The app supports key customer journeys including search and purchase, management, account access, and different experiences. This role plays a critical part in shaping the technical direction and delivering seamless digital customer experiences. Qualifications • Strong experience in Android development using Kotlin, Java, Android SDK, and Jetpack, • Proven experience operating as a Technical Lead or senior engineer with architectural responsibilities, • Deep understanding of mobile architecture patterns (e.g. MVVM, Clean Architecture, modularisation), • Experience designing and integrating with APIs, including REST and GraphQL (advantageous), • Strong knowledge of software engineering best practices including TDD, CI/CD, and secure coding, • Experience building high-performance, scalable mobile applications with strong observability and logging, • Understanding of cloud-native and distributed system architectures, • Experience leading or working with offshore teams, • Strong problem-solving skills and ability to contribute to solution design and architecture JBRP1_UKTJ

Sports Senior Software Platform Engineer (Multiple roles, various seniority) | Sports Data We're also looking for PhD Sport Researchers, Quantitative Sports Modellers & Sports ML Experts We’re helping several sports data leaders, specialised in turning complex sporting datasets into actionable insights that drive smarter, evidence-based decision-making. Each team combines technical expertise with a genuine passion for sport, ensuring that the insights they deliver are both rigorous and practical. Build high performance trading and analytics platforms for the future of sports! Basketball, F1, Tennis, Horse Racing, Football (Soccer) and so much more... Essential Skills (Across the court/ track/ ground/ pitch): • Strong programming exposure with Go/ Golang or similar (such as Rust, Java, Kotlin, Python, C#, C++ etc), • Understanding of AWS to build pipelines., • Understanding of high-performance machine critical systems; ideally a sports trading platform or similar (financial trading/ banking/ air traffic platforms etc), • Strong problem-solving mindset with an analytical, systems-focused approach Bonus skills (100-point game, hat-trick, podium finish, Grand Slam): • Proven success with sports data/ the sports trading domain, • Genuine passion for sports and a curiosity-driven approach to understanding sports data Day-to-Day Duties (Throughout the venue): • Design, develop and analyse multiple high-performance sports trading and analytics platforms, whilst enabling global sports data to connect to it simultaneously, • Work with wider teams to add features, improve performance and increase reliability, • Contribute to CI/CD, security and long-term technical direction, • Innovate internal research projects exploring new metrics, analytical methods and applications of sport data Benefits (Beyond the match/ race/ game/ track): • An impact from day one, • Shape the future of sports technology, • Direct involvement with sport and the chance to apply tech to the real-world sporting calendar, • Creative freedom to experiment and innovate, • Supportive, collaborative culture that encourages learning and growth, • A vibrant team culture with a shared passion for sports, • Access to the latest tools and technologies, • Collaborative, flexible, remote first & hybrid working models, • Industry leading packages (competitive salary & bonus), plus an endless list of benefits.

Role Title: Full Stack Developer Duration: contract to run until 30/11/2026 Location: Sheffield, hybrid Rate: up to £418.60 p/d Umbrella inside IR35 Role purpose / summary We are looking for a Full Stack Developer reporting to a Lead inside CTO DevOps Services. We expect the individual to participate in all parts of the development life cycle including analysis, testing and production support. We do not have separate teams and these activities are all part of the role. The successful candidate will be expected to do the following: Work within a team of 4 - 6 people. Most teams are in a single location, but it can be geographically dispersed Take a business requirement, divide it up into stories and deliver each story iteratively to production. Product support is integral to the role - we have a saying, "the team builds it, the team supports it". Identify areas of technical debt, ensure a healthy balance of tech debt and new functionality is prioritised and worked on. For new items you need to design the solution and ensure that it follows technology guidelines and constraints Pairing with other members of the team. We expect the candidate to have the following skills: Willingness to learn multiple programming languages Demonstratable experience of one language. We predominantly use Kotlin, Java, JavaScript Working knowledge of Unix Must understand databases from a consumer point of view Knowledge of HTTP APIs e.g. RESTful API's All profiles will be reviewed against the required skills and experience. Due to the high number of applications we will only be able to respond to successful applicants in the first instance. We thank you for your interest and the time taken to apply

Kotlin Developer - Contract (Outside IR35).

Candidates should have strong experience with Kotlin and Coroutines, Jetpack Compose, and JUnit/Espresso.

Ideal candidates will have strong experience with backend services in Python or Kotlin, and a passion for customer experience.

The role involves hands-on development with Kotlin, focusing on building a high impact consumer product. The ideal candidate should have over 5 years of commercial Android experience and deep knowledge of Kotlin.

Candidates should have expertise in Java or Kotlin, along with skills in Docker, Kubernetes, and cloud platforms such as GCP or AWS.

AWS* GraphQL (it would be nice if you were familiar with this but it’s not a deal breaker)* Postgres* RabbitMQ* Docker* Kubernetes* React & React Native, TypeScript, MobX, Redux, Stylus and SASS* We build our Kotlin projects using Gradle and GitHub Actions, deploying to production

Our mobile stack is powered by Kotlin, Jetpack Compose, Compose Multiplatform, SwiftUI, and Kotlin Multiplatform Mobile (KMM). As a Software Development Engineer III – Mobile at Fanatics Betting & Gaming (FBG), you are a senior individual contributor with strong Kotlin expertise and a passion for

The ideal candidate has strong expertise in Kotlin and Java and is proficient in Android SDK and UI design principles.

A forward-thinking technology firm in the UK is seeking a Freelance Software Developer (Kotlin) for an exciting AI Trainer role. You will design technical content, collaborate with engineers, and explore modern Kotlin frameworks while working on advanced AI projects. Candidates should have over 3 ye

A leading fintech company in Greater London is seeking an experienced mobile app developer to help build their new Android app using Kotlin.

Explore modern Kotlin frameworks and tools to create practical, real‑world examples for learning and testing. Continuously refine content based on feedback, emerging patterns, and advances in the Kotlin ecosystem. Kotlin development (Android or server‑side).

The ideal candidate will possess strong expertise in Kotlin and a solid understanding of modern mobile development practices.

Are you ready to elevate your software engineering career? At JPMorganChase, you’ll join a collaborative team where your ideas drive impactful technology solutions.We value your expertise and offer opportunities for growth, learning, and innovation.Be part of a culture that celebrates diversity, i

Mobile Backend Developer (JAVA/Kotlin). We have a great opportunity for a Mobile Backend Developer (JAVA/Kotlin) to join the team. Preferred - Experience of building distributed scalable microservices using Java/Kotlin, Spring Boot, OAuth 2.

The role includes hands-on programming in Java and Kotlin, involvement in agile practices, and mentoring junior analysts.

A prominent financial services firm in Greater London is looking for a Software Engineer III to join the FX Services Technology team.The role involves executing software solutions, designing high-quality production code, and contributing to a collaborative and innovative team culture.Ideal candidate

Candidates should have experience in programming languages like Kotlin, Java, or JavaScript, and a solid understanding of databases and RESTful APIs.

A leading digital consultancy in the UK is seeking a skilled Android Developer to create high-quality mobile applications using Kotlin Multiplatform.

A fast-growing fintech company based in London is seeking a Senior Java/Kotlin Engineer to design and maintain high-throughput backend services. The ideal candidate has over 8 years of experience in software engineering, especially with Java and Spring Boot, and an interest in Kotlin.

We are looking for a Full Stack Engineer who is equally comfortable building robust backend services in Kotlin and crafting polished, performant UIs in React. Design, build, and maintain Kotlin‑based backend services and RESTful/event‑driven APIs that power our payments and distribution infrastr

The ideal candidate should have experience in native mobile application development, particularly in Swift or Kotlin, and a passion for delivering high-quality code.

If you have startup experience and are keen on developing your Kotlin Multiplatform skills, we want to hear from you. You'll be working on an app entirely built in Kotlin utilizing modern tools like Coroutines and Flow.

Candidates will design technical solutions, code primarily in React and Kotlin, and engage in continuous deployment and improvement.

The ideal candidate will have a Bachelor's degree in a related field, over 5 years of experience in software engineering, and strong skills in Java and Kotlin.

A tech company dedicated to digital delivery is recruiting a Contract Senior Java / Kotlin Engineer to work on-site in Spitalfields, London. Candidates should have over 5 years of experience in Java or Kotlin, along with strong Test Driven Development and agile experience.

A tech innovation firm is seeking a Kotlin Coding Specialist for a freelance AI Trainer project. This remote position focuses on evaluating and optimizing AI-generated code, implementing Kotlin solutions, and documenting modern Android practices.

A leading data technology company in the UK is seeking a Senior Android Engineer to enhance their flagship Kotlin app. The ideal candidate has over 5 years of Android development experience and a strong command of Kotlin.

The role involves using Kotlin and AWS to develop scalable infrastructures that enable real-time insights from complex datasets, impacting billion-dollar decisions.

A leading global crypto company is seeking a Software Engineering Intern to support the development of APIs for crypto trading and gain experience in building Kotlin-based backend systems.

Ownership and delivery on components (Java/Kotlin) within the Core Prime Brokerage platform; hands‑on development.

The ideal candidate will have experience with Java 9+, Spring Boot, and Kotlin, along with a solid background in eCommerce.

Apply today and teach AI how to code like the best Kotlin engineers in the world. Kotlin Coding Specialist – AI Trainer. Kotlin Coding Specialist – AI Trainer.

A prominent insurance technology firm is seeking a mid-senior level Software Engineer to create impactful software.The successful candidate will provide technical leadership while working in agile teams.Responsibilities include building web-based applications and maintaining APIs, as well as mentori

Remote Full-Stack Developer (Kotlin/Java/React + AI Focus). You will primarily work with Kotlin/Java on the backend and TypeScript on the frontend, with significant exposure to our Electron desktop application and billing/accounts systems. Design and implement server-side logic using Spring Webflux

Java / Kotlin Developer Digital Assets (German-speaking). Strong proficiency in Java/Kotlin, experience with Spring Boot and RESTful Services.

The ideal candidate must have a strong knowledge of Kotlin and a willingness to learn new technologies.

A leading healthcare technology provider is seeking a remote Backend Developer proficient in Kotlin and Java.

Key qualifications include over 5 years of Android development experience in Kotlin, knowledge of mobile analytics, and performance optimization skills.