501 to 525 of 8,455 kotlin,java Jobs in the UK

Job Description Java/Kotlin Engineer - Contract Outside IR35 London 2 days per week in London but flexible We're seeking an experienced Java/Kotlin engineer on a contract basis (outside IR35) who is eager to solve complex technical problems, with expertise in developing data-intensive, high-throughput systems. This role involves working … stores (e.g., Couchbase, Cassandra). Address challenging engineering problems at scale, ensuring reliability and performance under heavy load. What you'll need: Strong experience in Kotlin or Java (Kotlin preferred). Background in data architectures and large-scale systems. Experience with relational databases (Oracle is a plus, but not essential). Knowledge of distributed systems More ❯

and fostering an inclusive environment. Your strategic planning and ownership of standards contribute to continuous growth and transformation. You should have a deep understanding of backend languages such as Java, .Net, Golang, Node.js, Python, or Kotlin to make informed technical recommendations. Qualifications We are committed to inclusivity and support your development. We offer flexible working, benefits like More ❯

Support an environment of transparency by providing prompt feedback, both gently and honestly Your Experience Must have: 6+ years of experience in one of the following programming languages: Scala, Java, Kotlin, Objective C/Swift. Experience in designing and implementing robust distributed systems 4+ years of team management: establishing processes in a cross-functional team, building tech More ❯

quality software. Excellent understanding of system design, software architecture, cloud, and software engineering standard methodologies. Great leadership and coaching skills with the ability to develop engineering colleagues Tech stack Java, Kotlin, GraphQL Federation, Micronaut, Azure Cloud, GitHub, New Relic and Dynatrace What's in It for You Being a part of M&S is exactly that - playing More ❯

t hurt if you have experience with some of the following (or a passion to learn them): Fluent Object-Oriented Programming concepts, data structure, algorithms, preferably in JVM languages (Java/Kotlin/Scala/Clojure/Groovy) . Very passionate about learning, especially in the areas of technology, service design patterns and system architecture. Be self More ❯

quality software. Excellent understanding of system design, software architecture, cloud, and software engineering standard methodologies, Great leadership and coaching skills with the ability to develop engineering colleagues Tech stack Java, Kotlin, GraphQL Federation, Micronaut, Azure Cloud, GitHub, New Relic and Dynatrace Everyone’s welcome We are ambitious about the future of retail. We’re disrupting, innovating and More ❯

Driving performance, quality, and responsiveness across the Android app portfolio. The successful candidate for this Lead Android Developer position in Manchester will possess: Extensive experience in Android development using Java and Kotlin. Proven leadership in managing or mentoring engineering teams. Expertise in Android SDK, Android Studio, and related tools. Deep understanding of Android OS and its integration with connected More ❯

Driving performance, quality, and responsiveness across the Android app portfolio. The successful candidate for this Lead Android Developer position in Manchester will possess: Extensive experience in Android development using Java and Kotlin. Proven leadership in managing or mentoring engineering teams. Expertise in Android SDK, Android Studio, and related tools. Deep understanding of Android OS and its integration with connected More ❯

Authentication domain and understanding of authentication protocols like OAuth You are familiar with cryptographic techniques and security best practices. Experience in iOS (Objective C/Swift) or Android (Kotlin) development is a plus. Where You'll Be This role is based in London We offer you the flexibility to work where you work best! There will be some More ❯

Authentication domain and understanding of authentication protocols like OAuth. You are familiar with cryptographic techniques and security best practices. Experience in iOS (Objective C/Swift) or Android (Kotlin) development is a plus. Where You'll Be This role is based in London. We offer flexibility to work where you work best! There will be some in-person More ❯

to proactively secure their code. WHAT YOU WILL NEED: Extensive knowledge of secure standards and practices to build software preferably in at least one JVM based language such as Java and Kotlin. Experience working on different kinds of assignments including code reviews, secure standard development, and building secure software. Proven experience implementing Security in highly regulated environments. Previous experience More ❯

Senior/Principal Kotlin Engineer - Contract Outside IR35 London 1-2 days per week in London £650-£750 per day - negotiable We're after an experienced Java/Kotlin engineer on a contract basis (outside IR35) who wants to solve hard technical problems, with experience in building data-intensive, high-throughput systems. This is a … Leverage big data technologies, distributed caches, and modern data stores Solve challenging engineering problems at scale, ensuring reliability and performance under heavy load. What you'll need: Strong Kotlin experience is mandatory Background in highly concurrent, data intensive systems is mandatory Knowledge of distributed systems and scalable data architectures is mandatory Flink/Trino or similar preferred not More ❯

Senior/Principal Kotlin Engineer - Contract Outside IR35 London 1-2 days per week in London £650-£750 per day - negotiable We're after an experienced Java/Kotlin engineer on a contract basis (outside IR35) who wants to solve hard technical problems, with experience in building data-intensive, high-throughput systems. This is a … Leverage big data technologies, distributed caches, and modern data stores Solve challenging engineering problems at scale, ensuring reliability and performance under heavy load. What you'll need: Strong Kotlin experience is mandatory Background in highly concurrent, data intensive systems is mandatory Knowledge of distributed systems and scalable data architectures is mandatory Flink/Trino or similar preferred not More ❯

Principle Engineer (Kotlin) – Hybrid (London) – Up to £150k 🏙️ Join a fast-growing cleantech company as a Principle Kotlin Enginee r that is driving the global shift to clean, affordable energy through an integrated hardware and software smart-grid platform focused on residential EV charging. By leveraging data, AI, and strong industry partnerships, they connect cars, chargers … people, and energy providers to place consumers at the heart of the energy transition. 🚀 What You'll Do: • 🧩 Contribute to scalable backend infrastructure built in Kotlin • 🛠️ Write clean, maintainable, tested code in production • 🧭 Shape tech strategy and architecture with new ideas and tools • 🤝 Work closely with Product … Owners and team members to deliver value • 🎓 Mentor junior developers and support their growth 🧠 What You Bring: • 🖥️ Solid commercial experience in Kotlin (Open to those with a java background) • 🌿 Experience with Spring Boot, or similar frameworks (e.g. Ktor) • 🧼 Strong API-first mindset and clean coding practices • 🧪 Knowledge of Agile, peer reviews, pair programming, and test-driven development More ❯

Principle Engineer (Kotlin) – Hybrid (London) – Up to £150k 🏙️ Join a fast-growing cleantech company as a Principle Kotlin Enginee r that is driving the global shift to clean, affordable energy through an integrated hardware and software smart-grid platform focused on residential EV charging. By leveraging data, AI, and strong industry partnerships, they connect cars, chargers … people, and energy providers to place consumers at the heart of the energy transition. 🚀 What You'll Do: • 🧩 Contribute to scalable backend infrastructure built in Kotlin • 🛠️ Write clean, maintainable, tested code in production • 🧭 Shape tech strategy and architecture with new ideas and tools • 🤝 Work closely with Product … Owners and team members to deliver value • 🎓 Mentor junior developers and support their growth 🧠 What You Bring: • 🖥️ Solid commercial experience in Kotlin (Open to those with a java background) • 🌿 Experience with Spring Boot, or similar frameworks (e.g. Ktor) • 🧼 Strong API-first mindset and clean coding practices • 🧪 Knowledge of Agile, peer reviews, pair programming, and test-driven development More ❯

to be able to make the best recommendations and set the right technical direction; therefore you'll need a deep understanding of a backend language/s such as Java, .Net, Golang, Node.js, Python and Kotlin etc. We are committed to being a truly inclusive retailer, so you'll be welcomed whoever you are and wherever you More ❯

of a decentralized team and project and several contributions to engineering community through a blog post, open-source contribution, tech talks etc. 8+ years of Software Development work experience (Java or Kotlin experience strongly preferred) with a strong focus on backend development and solid experience working in high performance, high throughput, highly available and scalable services in More ❯

leads the evolution of our architecture patterns and principles, and constantly explores opportunities to optimise both our core frameworks and development processes. What you’ll do Explore new Kotlin language features and Android core frameworks, establishing best practices for their use Contribute to the evolution of our open-source Appyx architecture Drive enhancements in core frameworks, including Networking … strategy and product & business direction Develop cadence and strong ways of partnering with mobile development teams Drive continuous improvement in team processes About you: Advanced Android SDK/Kotlin skills Strong knowledge of Android API capabilities at different levels … framework components and lifecycles Excellent understanding of design patterns and Object-Oriented Programming Sound computer science foundations: algorithms, data structures, concurrency, threading, and programming languages (Kotlin and Java) Experience working with protobuf, gRPC, and socket-based networking is desirable Strong communication skills, excellent teamwork capabilities Ability to act as a role model for other engineers on the More ❯

knowledge of Session Initiation Protocol (SIP) and SBC technologies Hands-on experience with SBCs, ARM/ECB, and backend management tools Proficiency in Python , JavaScript , HTML/CSS , or Java/Kotlin Working knowledge of networking (routers, switches, firewalls, SASE) - Network+ or CCNA a plus Experience in writing detailed documentation and collaborating across technical teams Self-starter More ❯

React Native, which is what is currently used across all mobile projects. Strong background in native mobile development - iOS (Swift/Objective-C) and Android (Kotlin/Java). Proven ability to lead small teams, set direction, and mentor junior engineers. Comfortable driving mobile architecture, setting standards, and leading technical discussions. What are you waiting for, apply More ❯

engineers, soon to be 3). What We're Looking For: Strong background in native mobile development - iOS (Swift/Objective-C) and Android (Kotlin/Java). Familiarity or experience with React Native, which is what is currently used across all mobile projects. Proven ability to lead small teams, set direction, and mentor junior engineers. Comfortable More ❯

React Native, which is what is currently used across all mobile projects. Strong background in native mobile development - iOS (Swift/Objective-C) and Android (Kotlin/Java). Proven ability to lead small teams, set direction, and mentor junior engineers. Comfortable driving mobile architecture, setting standards, and leading technical discussions. What are you waiting for, apply More ❯

React Native, which is what is currently used across all mobile projects. Strong background in native mobile development - iOS (Swift/Objective-C) and Android (Kotlin/Java). Proven ability to lead small teams, set direction, and mentor junior engineers. Comfortable driving mobile architecture, setting standards, and leading technical discussions. What are you waiting for, apply More ❯

travelers’ expectations in locally relevant ways and adhere to regulatory norms. The pricing platform supports millions of users every year in finding suitable travel products using technologies such as Java, Scala, Kotlin, Spring, MSSQL, DynamoDB, Redis, etc. We encourage experimentation with new technologies while maintaining a healthy balance between short- term and long-term goals. We deeply … design solutions that are easily testable and observable You are strong in multiple technologies or languages, and you are an expert in a given domain - (Scala, Kotlin, Java, AWS, Spring) You’re able to justify technology choices to technical and non-technical observers making well-defined technology choices You have the ability to establish operational excellence metrics More ❯

knowledge of Session Initiation Protocol (SIP) and SBC technologies Hands-on experience with SBCs, ARM/ECB, and backend management tools Proficiency in Python , JavaScript , HTML/CSS , or Java/Kotlin Working knowledge of networking (routers, switches, firewalls, SASE) - Network+ or CCNA a plus Experience in writing detailed documentation and collaborating across technical teams Self-starter More ❯