326 to 350 of 744 Kotlin Jobs in the UK

with world-class engineering teams to embed security directly into product design, development, and deployment. Lead secure SDLC efforts, ensuring best practices in languages like Python, C++, Rust, Go, Kotlin/Java. Conduct hands-on threat modelling, security assessments, code reviews, and risk mitigation for large-scale distributed systems. Integrate security scanning tools (SAST, DAST) into CI/CD … or start-ups, with a broad range of responsibilities Experienced with SAST and DAST, integrating into CI/CD pipelines Programming Languages: skills in either Python, C++, Rust, Go, Kotlin/Java Experience with cloud platforms (either AWS, Azure or Alibaba Cloud) Experience with low-latency is beneficial Skilled in risk assessments, threat modelling, secure architecture design, and proactive More ❯

financial institutions, and you can be a core part of this journey. The Opportunity: Power the Engine of FinTech with Us We are seeking a talented and enthusiastic Graduate Kotlin Backend Developer to join their team. You'll have the chance to work on the server-side logic, databases, and APIs that power their platform, contributing to a robust … permanent position is the goal upon a successful outcome. What You'll Be Working On (and learning!): Developing and maintaining backend services and APIs for the platform. Working with Kotlin (and potentially Java/Golang as our platform evolves) and the Spring Boot framework. Interacting with our Postgres database. Contributing to system design and architecture discussions. Writing clean, testable … strong academic record, with significant Honours or Master's level project work you're proud of and can discuss in detail. Foundational programming skills, ideally with some exposure to Kotlin, Java, or Golang . An understanding of backend development concepts (e.g., APIs, databases, server-side logic). A genuine interest in learning and working with our specific tech stack More ❯

Senior Android Developer - Android, Kotlin, MVVM, Java, XML health care apps Do you have the following skills, experience and drive to succeed in this role Find out below. Central London circa £80k DoE + discretionary annual Bonus Hybrid working 3-4 days per week in the office A cracking opportunity for a Senior Android Developer to join a small More ❯

is crucial to improving performance, refining UX, and shaping the future of mobile at the organisation. Currently built using React Native, the app increasingly incorporates native elements (Swift/Kotlin) to unlock better performance and user experience. The incoming Android + iOS Engineers will be instrumental in driving this evolution forward. Key Responsibilities Collaborate with the Engineering Manager and … backend, and product teams Drive technical excellence, with a focus on high-quality code, maintainability, and best-in-class mobile experience Candidate Profile Strong experience developing mobile apps using Kotlin Deep understanding of native Android development, frameworks, and tools Proven track record of delivering high-quality, performant applications A passion for clean, maintainable code and continuous improvement Strong sense More ❯

is crucial to improving performance, refining UX, and shaping the future of mobile at the organisation. Currently built using React Native, the app increasingly incorporates native elements (Swift/Kotlin) to unlock better performance and user experience. The incoming Android + iOS Engineers will be instrumental in driving this evolution forward. Key Responsibilities Collaborate with the Engineering Manager and … backend, and product teams Drive technical excellence, with a focus on high-quality code, maintainability, and best-in-class mobile experience Candidate Profile Strong experience developing mobile apps using Kotlin Deep understanding of native Android development, frameworks, and tools Proven track record of delivering high-quality, performant applications A passion for clean, maintainable code and continuous improvement Strong sense More ❯

team, which provides effective identity assurance enabling online verification with confidence. Our tech stack includes AWS serverless services, with backend in TypeScript/Node.js and native mobile apps in Kotlin and Swift. If you're interested in this opportunity, we'd love to hear from you. Find out more at the GDS Blog. Job description As a Lead Developer … Line-manage 2-5 technologists, supporting their career growth and wellbeing Person specification We are looking for candidates who: Have strong software development skills in JVM, Node.js/TypeScript, Kotlin, or Swift, with a willingness to learn others Are experienced in TDD, CI/CD, and DevOps practices Have led software development across multiple teams or have broader impact More ❯

live product—not content delivery—so automated testing, performance, and reliability are key focuses of the role. What You’ll Do: Support and maintain CI/CD pipelines for Kotlin-based XR applications and backend services supplying video and data streams. Implement and maintain unit tests, integration tests, and automated testing pipelines to ensure product stability Assist with cloud … technologies within a collaborative and supportive team What You Will Bring: 1–3 years of experience (or equivalent training) in DevOps, QA Automation, or Software Engineering Experience working with Kotlin-based products or Android-based platforms Familiarity with CI/CD tools (Bitbucket Pipelines, GitHub Actions, GitLab CI,, Jenkins, or similar) Exposure to automated unit testing and integration testing More ❯

value experience in some of the following areas, not necessarily all: Writing readable, well-designed, and well-tested software 5+ years of experience in building Android applications at scale Kotlin and/or Java expertise Scaling Android architecture 3+ years using Android development tools like Android Studio Working in cross-functional teams Knowledge of Android SDK and AndroidX Interest … in Kotlin development Workplace & Diversity At Deliveroo, people are our heart. We prioritize their welfare and offer benefits across health, family, finance, community, and growth. We embrace diversity, welcoming all backgrounds and identities. All you need is a passion for food and a desire to be part of a fast-growing startup in an exciting space. Benefits include: Competitive More ❯

Dive deep into the underlying cross-platform implementations that power our frameworks What We Believe are Important Traits for This Role 5+ years of experience in Android development using Kotlin and Java Experience building SDKs or libraries in any language Experience with Jetpack Compose and Kotlin coroutines Desire to build frameworks and developer tools Passion for developer ergonomics More ❯

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 ❯

enjoy working in tribes and squads focused on specific products and projects, with opportunities to move between them based on your strengths and interests. Technologies we use include: Java, Kotlin, Kubernetes, Apache Kafka, GCP, BigQuery, Spark. While professional skills are important, culture is equally valued. We recognize everyone's uniqueness, and believe that diversity of thought, experience, and background … problem-solving concepts with practical experience. Ability to analyze problems independently and develop solutions. Flexibility with tools and languages (e.g., debugging an SSO issue in Python, troubleshooting Java/Kotlin memory issues). Knowledge of data structures. Experience with Kubernetes or Docker. Preferred Qualifications, Capabilities, and Skills Experience with at least one cloud platform. Experience with message brokers such More ❯

live product—not content delivery—so automated testing, performance, and reliability are key focuses of the role. What You'll Do: Support and maintain CI/CD pipelines for Kotlin-based XR applications and backend services supplying video and data streams Implement and maintain unit tests, integration tests, and automated testing pipelines to ensure product stability Assist with cloud … within a collaborative and supportive team Requirements What You Will Bring: 1-3 years of experience (or equivalent training) in DevOps, QA Automation, or Software Engineering Experience working with Kotlin-based products or Android-based platforms Familiarity with CI/CD tools (Bitbucket Pipelines, GitHub Actions, GitLab CI,, Jenkins, or similar) Exposure to automated unit testing and integration testing More ❯

on our team culture, processes and norms. Taptap Send is a cross-platform mobile app developed with React Native and TypeScript, which talks to a backend service written in Kotlin and backed by a PostgreSQL database, all of which runs on AWS and is managed via Terraform and Ansible. This is a backend-focused role, but you will have … with product team to regularly ship working features. Work in an iterative fashion. Evaluate and deliver timeline estimates. Requirements: 7+ years of professional experience building backend systems. Proficiency with Kotlin or Java/JVM. Proficiency with PostgreSQL. Experience with AWS: S3, SQS, SNS, Lambda, etc. Experience implementing and managing elaborate integrations with third-party APIs. Experience working on systems More ❯

and squads that focus on specific products and projects – and depending on your strengths and interests, you'll have the opportunity to move between them. Technologies we use: Java, Kotlin, Kubernetes, Apache Kafka, GCP, BigQuery, Spark While we're looking for professional skills, culture is just as important to us. We understand that everyone's unique – and that diversity … Flexibility regarding tools and languages: for example you have to be open to debug an SSO issue one day in a python service and dig into some Java/Kotlin out-of-memory issue the other day (of course we take into account your expertise and you will have team members to help you out!). Knowledge of data More ❯

something awesome, together, today. About the role and team: Our iOS and Android teams work simultaneously to bring similar but distinct experiences to our clients. Our Android developers use Kotlin, Coroutines and the latest Jetpack libraries. As we continue we’re always looking to find and adopt the best tools for the job - whether that’s making our CI … s within our project teams or in the wider mobile community. What you'll be doing: Developing mobile apps with a focus on readable, maintainable and tested code using Kotlin, Coroutines and modern android development practices Creating modern adaptable user experiences with Jetpack Compose Collaborating with designers, product owners, testers and clients to deliver great products as an agile More ❯

the technical architecture for our mobile Ad Tech stack , ensuring scalability, performance, and compliance with industry standards. Design and optimize ad-serving workflows for mobile apps built with Flutter, Kotlin, and Swift , ensuring seamless integration with ad mediation and programmatic platforms. Lead technical decision-making around ad integrations, header bidding, and low-latency ad rendering. Collaborate with engineering, product … app advertising. Requirements 6+ years of experience in software engineering with a focus on Ad Tech architecture, programmatic advertising, and mobile monetization . Strong knowledge of mobile development (Flutter, Kotlin) and a good understanding of backend development . Experience with Extreme Programming (XP) - Paired programming, TDD, C I etc. Hands-on experience integrating and optimizing mobile ad SDKs (Google More ❯

the technical architecture for our mobile Ad Tech stack , ensuring scalability, performance, and compliance with industry standards. Design and optimize ad-serving workflows for mobile apps built with Flutter, Kotlin, and Swift , ensuring seamless integration with ad mediation and programmatic platforms. Lead technical decision-making around ad integrations, header bidding, and low-latency ad rendering. Collaborate with engineering, product … app advertising. Requirements 6+ years of experience in software engineering with a focus on Ad Tech architecture, programmatic advertising, and mobile monetization . Strong knowledge of mobile development (Flutter, Kotlin) and a good understanding of backend development . Experience with Extreme Programming (XP) - Paired programming, TDD, C I etc. Hands-on experience integrating and optimizing mobile ad SDKs (Google More ❯

to deliver a market-leading experience for both Android and iOS users Key responsibilities: Develop and maintain high-quality native mobile applications for iOS and Android using Swift and Kotlin . Performance Optimization: Optimize mobile apps for speed, memory usage, and battery efficiency. API Integration: Work with REST/GraphQL APIs developed in FastAPI for real-time data synchronization. … customer needs and feedback throughout the development process. Demonstrate enthusiasm, resilience, and a can-do approach to tackling challenges and driving success. Skills & Abilities: Proficiency in Swift (iOS) and Kotlin (Android) . Strong experience in API integration and backend technologies like Python and FastAPI . Familiarity with containerized backend environments using Docker . Strong problem-solving and debugging skills. More ❯

on our team culture, processes and norms. Taptap Send is a cross-platform mobile app developed with React Native and TypeScript, which talks to a backend service written in Kotlin and backed by a PostgreSQL database, all of which runs on AWS and is managed via Terraform and Ansible. This is a backend-focused role, but you will have … with product team to regularly ship working features. Work in an iterative fashion. Evaluate and deliver timeline estimates. Requirements: 7+ years of professional experience building backend systems. Proficiency with Kotlin or Java/JVM. Proficiency with PostgreSQL. Experience with AWS: S3, SQS, SNS, Lambda, etc. Experience implementing and managing elaborate integrations with third-party APIs. Experience working on systems More ❯

and AudioCodes SBCs, ARM/ECB, and backend management tools Familiarity with DevOps tools , Agile delivery, and automation practices Proficiency in Python , JavaScript , HTML/CSS , or Java/Kotlin Working knowledge of networking (routers, switches, firewalls, SASE) - Network+ or CCNA a plus Cloud certification (AWS, Azure or GCP preferred) Experience in writing detailed documentation and collaborating across technical More ❯

would love to hear from you. Responsibilities Contribute to System Architecture, Aid colleagues to help coordinate our projects Peer review code The Person Strong working knowledge of C# or Kotlin Experience writing efficient, concurrent .NET code Experience working on distributed systems Strong knowledge of Kubernetes and Kafka Experience with Git, and Deployment Pipelines Having worked with at least one More ❯

A strong specialisation in testing, with proven expertise in UI testing and robust programming skills. In-depth knowledge of SwiftUI, UIKit, Foundation, structured concurrency, and dependency injection. Familiarity with Kotlin as an additional asset. Benefits: Bonus up to 8% Healthcare insurance Pension Collaborative/social working culture, e.g Pizza Thursdays If you are an iOS SDET looking for their More ❯

A strong specialisation in testing, with proven expertise in UI testing and robust programming skills. In-depth knowledge of SwiftUI, UIKit, Foundation, structured concurrency, and dependency injection. Familiarity with Kotlin as an additional asset. Benefits: Bonus up to 8% Healthcare insurance Pension Collaborative/social working culture, e.g Pizza Thursdays If you are an iOS SDET looking for their More ❯

A strong specialisation in testing, with proven expertise in UI testing and robust programming skills. In-depth knowledge of SwiftUI, UIKit, Foundation, structured concurrency, and dependency injection. Familiarity with Kotlin as an additional asset. Benefits: Bonus up to 8% Healthcare insurance Pension Collaborative/social working culture, e.g Pizza Thursdays If you are an iOS SDET looking for their More ❯

A strong specialisation in testing, with proven expertise in UI testing and robust programming skills. In-depth knowledge of SwiftUI, UIKit, Foundation, structured concurrency, and dependency injection. Familiarity with Kotlin as an additional asset. Benefits: Bonus up to 8% Healthcare insurance Pension Collaborative/social working culture, e.g Pizza Thursdays If you are an iOS SDET looking for their More ❯