76 to 100 of 3,435 kotlin,java Jobs in the UK

sharing across mobile platforms and advocate for best practices Partner with engineering leadership to scale mobile capabilities and contribute to hiring efforts Our Technology Stack Kotlin/Java Jetpack Compose RxJava/Coroutines Proto3/WebSockets/REST APIs Flutter (as a cross-platform addition) CI/CD Pipelines What You'll Need 6+ years of professional … Android development experience Strong knowledge of the Android SDK, Jetpack Compose, and MVP/MVVM architecture Solid experience with Kotlin Coroutines, RxJava, and Java concurrency Proficiency with dependency injection frameworks Experience building apps that consume HTTP APIs, WebSockets, and Protocol Buffers (proto3) Confidence in writing and maintaining UI tests Clear and professional English communication (B2+ level or More ❯

We're looking for a talented individual to join our team and contribute to the development and maintenance of our mobile applications. What You'll Do: Develop in Kotlin: You'll be at … the forefront of building and enhancing our Android applications using Kotlin. Maintain and Modernise: You'll also play a key role in reading, troubleshooting, and strategically updating our existing Java codebase. Architect for Scalability: You'll apply your understanding of mobile design patterns (MVVM, MVC, Clean Architecture) to create well-structured and maintainable applications. Master the Android Lifecycle: You More ❯

or AWS Certified Solutions Architect Hands-on practical experience delivering system design, application development, testing, and operational stability Advanced in one or more programming language(s), such as Go, Java or Kotlin Advanced understanding of agile methodologies, CI/CD, application resiliency, and security Demonstrated proficiency in software applications and processes within a technical domain, such as More ❯

engineering experience Strong foundation in object-oriented programming and system design Experience in JavaScript, TypeScript, HTML, CSS, and a modern frontend framework (e.g., React, Angular, Vue) Backend experience with Java, Go, Python (Django), C#, Kotlin, or Scala Experience with distributed systems, event streaming (e.g., Kafka), and relational/non-relational databases (e.g., Postgres, Azure SQL) Ability to More ❯

Staff Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient … Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot and AWS backend with TypeScript, React and Next.js on the front end. You'll be hands-on with architecture, design and coding, including complex business logic, authentication and … bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Staff Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient … Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot and AWS backend with TypeScript, React and Next.js on the front end. You'll be hands-on with architecture, design and coding, including complex business logic, authentication and … bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Staff Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient … Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot and AWS backend with TypeScript, React and Next.js on the front end. You'll be hands-on with architecture, design and coding, including complex business logic, authentication and … bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Staff Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient … Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot and AWS backend with TypeScript, React and Next.js on the front end. You'll be hands-on with architecture, design and coding, including complex business logic, authentication and … bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Agile Methodologies: Champion agile practices using tools such as Jira, Confluence, and Slack. • Technical Guidance: Provide expert advice in mobile and web application development across iOS, Android, React, TypeScript, Java, and Kotlin. • Performance Monitoring: Track performance metrics with Grafana and uphold best security practices with Bitwarden. Required qualifications to be successful in this role: • Project Management Expertise: Proven track More ❯

the years, we have experienced explosive growth - which means we need more rock stars to join our quest for total world domination. We are looking for an awesome Senior Java Backend Developer to join our growing team. The role isa hybrid based one in the UK (St Albans), Malta, or Gibraltar, fullyremote from EU is an option too. What … player with excellent communication and collaboration skills that demonstrates critical thinking and problem-solving abilities, and able to manage their time. 5+ years of in-depth practical experience with Java and Spring . Knowledge of other JVM-based languages, especially Kotlin is a plus. Solid understanding of web application architecture and microservices. Strong grasp and professional experience More ❯

Senior Full StackDeveloper Kotlin/Java/React (Hybrid, London) We're working with aninsurtech company thats redefining how consumers experience insurance in the digital age. Their mission is to simplify and personalise the insurance journey, leveraging modern technology, intuitive design, and deep industry insight to deliver standout experiences particularly in the automotive and mobility sectors. Responsibilities … Designing and developing backend services and REST APIs using Kotlin and Java Building and integrating front-end interfaces using React.js, TypeScript & PostgreSQL Creating and maintaining AWS Lambda functions and infrastructure using Terraform Collaborating closely with product, design, and domain experts in a fast-moving, agile environment Playing a key role in shaping architecture and tech strategy as … the platform scales Qualifications: 6 years' experience with Kotlin/Java, React.js, and TypeScript A solid grasp of SQL and practical experience with PostgreSQL Comfortable working with infrastructure-as-code and DevOps practices in AWS Experience working in agile teams with strong CI/CD and testing culture Strong communication skills you're able to explain complex More ❯

to Microservices, APIs, SQL/No SQL databases. Working knowledge of single page application is desirable. Looking for T-Shaped profile with experience in following languages and technologies like Java, J2EE, Springboot, React, Angular, CCS, CSS pre-processors and Node.js. Secondary Skills hands-on experience on Kotlin and C# will be an added advantage. CRM tool such More ❯

to Microservices, APIs, SQL/No SQL databases. Working knowledge of single page application is desirable. Looking for T-Shaped profile with experience in following languages and technologies like Java, J2EE, Springboot, React, Angular, CCS, CSS pre-processors and Node.js. Secondary Skills hands-on experience on Kotlin and C# will be an added advantage. CRM tool such More ❯

as a senior individual contributor, owning architecture and technical strategy across the platform. Design and build scalable, developer-friendly systems—including APIs, data models, integrations, and payment solutions—using Java, Spring Boot, PostgreSQL, Kubernetes, Terraform, and AWS. Lead architecture discussions internally and in client-facing settings, guiding trade-offs between speed, flexibility, and scalability, and championing customer-focused, evidence … delivering large-scale engineering systems, with at least 2 years in senior technical leadership roles such as Principal Engineer or Architect. Strong hands-on expertise across the stack, including Java, Spring, Kotlin, PostgreSQL, MongoDB, AWS, and React.js. Proven ability to translate product and business goals into scalable, robust technology solutions while leading agile teams and contributing to More ❯

as a senior individual contributor, owning architecture and technical strategy across the platform. Design and build scalable, developer-friendly systems—including APIs, data models, integrations, and payment solutions—using Java, Spring Boot, PostgreSQL, Kubernetes, Terraform, and AWS. Lead architecture discussions internally and in client-facing settings, guiding trade-offs between speed, flexibility, and scalability, and championing customer-focused, evidence … delivering large-scale engineering systems, with at least 2 years in senior technical leadership roles such as Principal Engineer or Architect. Strong hands-on expertise across the stack, including Java, Spring, Kotlin, PostgreSQL, MongoDB, AWS, and React.js. Proven ability to translate product and business goals into scalable, robust technology solutions while leading agile teams and contributing to More ❯

Participate in our 24x7 on-call rotation, SCRUM, and deployment planning. We hire the best software engineers, but experience in our stack can't hurt: NinjaOne is built on Java , Kotlin , C++ , and Postgres , supporting millions of user endpoints and running as a scalable cloud service in AWS . Knowing large-scale datastore bottlenecks, asynchronous application design … delivery time of applications and infrastructure Other duties as needed About You 7+ years' experience in Site Reliability Engineer roles 3+ years' experience with an object-oriented language (preferably Java, .NET or C++) Expert+ level Linux administration, scripting, and troubleshooting Demonstratable knowledge of Observability tools (New Relic, Splunk, DataDog) Comprehensive experience with AWS (Amazon Web Services) and its core More ❯

Participate in our 24x7 on-call rotation, SCRUM, and deployment planning. We hire the best software engineers, but experience in our stack can't hurt: NinjaOne is built on Java , Kotlin , C++ , and Postgres , supporting millions of user endpoints and running as a scalable cloud service in AWS . Knowing large-scale datastore bottlenecks, asynchronous application design … delivery time of applications and infrastructure Other duties as needed About You 7+ years' experience in Site Reliability Engineer roles 3+ years' experience with an object-oriented language (preferably Java, .NET or C++) Expert+ level Linux administration, scripting, and troubleshooting Demonstrable knowledge of Observability tools (New Relic, Splunk, DataDog) Comprehensive experience with AWS (Amazon Web Services) and its core More ❯

table: Proven experience in Android development, focusing on delivering high-quality applications. Keen desire to stay updated with the latest Android technologies and frameworks. Kotlin, JetCompose and Java expertise. Familiarity with Android Studio and its tooling. Experience with Jetpack components. Understanding of RESTful APIs for data integration. Proficiency with testing frameworks, including JUnit and Espresso. Knowledge of More ❯

cross-functionally with backend, product, and UX to deliver seamless mobile-first experiences for public safety. Help evaluate and incorporate multi-platform frameworks and tooling where beneficial (e.g., Kotlin Multiplatform, Flutter). What … You Bring 8-12 years of professional software engineering experience, including native mobile development. Deep experience with either iOS (Swift/Objective-C) or Android (Kotlin/Java) , with working knowledge of the other. Proven ability to lead architecture discussions and contribute across large-scale mobile systems. Familiarity with app deployment processes, mobile CI/CD, and More ❯

contribute to a team culture that values quality, robustness, and knowledge sharing. Need to have: A minimum of 8 years post-graduate experience in the software industry. Expertise in Java, Kotlin, Typescript, or C#. Expertise in React or Angular. Experience developing cloud-native solutions and modern frontend applications. Experience developing secure and robust architectures. Experience delivering code More ❯

to the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems - Experience (non-internship) in professional software development - Android mobile application development experience in Java and Kotlin PREFERRED QUALIFICATIONS - Bachelor's degree in computer science or equivalent - Experience with full software development life cycle, including coding standards, code reviews, source control management More ❯

collaboratively as part of a team: version control, Pull Requests, scrum/kanban etc Desired Experience with development of iOS applications on MacOS Experience in native (ObjC/Swift, Java/Kotlin) development in support of React Native applications Prior experience in a CI/CD pipeline for RN applications Some experience with Fastlane and Ruby would More ❯

the business to manage dependencies and deliver integrated outcomes Key requirements: 3+ years' experience managing engineering teams of 8 or more A strong background in software development using JavaScript, Java or Kotlin Experience building microservices and distributed systems using Docker, Kubernetes, and cloud-native patterns Deep knowledge of Agile delivery, DevOps practices, and automated testing pipelines Excellent More ❯

using Crossplane, Terraform, or equivalent Hands-on practical experience delivering system design, application development, testing, and operational stability Advanced in one or more programming language(s), such as Go, Java or Kotlin Advanced understanding of agile methodologies, CI/CD, application resiliency, and security; including modern best practices for secure delivery, such as SLSA framework Demonstrated proficiency More ❯

React Experience with Unit and Integration Testing JUnit, Spock, Jest Experience with integration frameworks such as Apache Calling all tech enthusiasts! Are you a problem-solving, curious, and strategic Java Developer? Join us at Sidetrade, the leading global SaaS provider recognized by Gartner. Indulge your passion for high-availability software and performance enhancement as part of our profiling tools … and load testing. Requirements Commercial experience with a core programming language, like Java or any other JVM language (Groovy, Scala, Kotlin ) Expertise in API Engineering Experience with relational database technologies like PostgreSQL DevOps: CI/CD More ❯