1 to 25 of 31 Permanent Kotlin Jobs in London

development Experience working within an Agile Scrum methodology in a cross-functional team (Product Owners, Delivery Managers, UI/UX, QA, etc.) Proficiency in Kotlin Experience with XML or Jetpack Compose Strong communication skills and a collaborative team approach Desirable Experience working on banking or financial services applications Understanding ...

technical discussions Contribute to improving app performance, stability, and UX Essential Skills & Experience Commercial experience as a Native Android Developer Strong experience with Kotlin (Java experience also beneficial) Solid understanding of Android SDK and modern Android development practices Experience with common Android architectures (MVVM or similar) Experience integrating RESTful ...

platform applications for iOS and Android using React Native and TypeScript . Native familiarity: While you live in JavaScript, experience with native code ( Swift, Kotlin , or Objective-C ) to bridge gaps or debug native modules is a significant plus. Form handling: You have experience building complex forms and implementing ...

initiatives. Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products. Preferred Qualifications: Strong proficiency in Kotlin Advanced proficiency with Jetpack components/Jetpack Compose, Android UI/UX best practices, and performance optimisation Deep understanding of Android app architecture patterns ...

tools such as Vitest, Jest, React Native Testing Library, Maestro, Detox Nice to have: Experience with iOS (Objective-C, Swift) or Android (Java, Kotlin) native development. Experience with mobile release processes for the App Store and Play Store. Experience with performance optimisation and profiling in React Native. Familiarity with ...

debugging to deployment and optimisation. Influence technical decisions and shape the future of our mobile strategy. What We’re Looking For Strong experience in Kotlin and Android app development. Proven track record building enterprise-grade Android applications. Deep understanding of mobile best practices, including UI/UX, testing ...

ability to operate in fast-moving environments Confident communicator and collaborative team player Nice to have: Exposure to frontend technologies (React, Flutter, SwiftUI, Kotlin, etc.) Experience with Kubernetes, Redis, or microservices/event-bus architectures If this sounds like a fit, apply with your updated CV or reach ...

third-party teams and partners. Key Responsibilities SDK Design & Development Design and develop a cross-platform mobile SDK (iOS & Android) using Swift and Kotlin Create clean, modular, well-documented SDK APIs for external developers Ensure the SDK is easy to integrate, versioned correctly, and backward compatible Own the full ...

initiatives and knowledge-sharing activities Technology Exposure You will gain experience across a broad technical landscape, including but not limited to: Java, JavaScript, Node.js, Kotlin Spring Boot and RESTful microservices Selenium, Playwright, Cucumber, REST testing NoSQL databases Git-based version control systems Your Profile Essential experience: ISTQB Foundation certification ...

Experience working in a data-centric organisation Desirable Skills React front-end development React. Native cross-platform mobile application development Android development (Java/Kotlin/Dagger2) Image Processing, ANPR (automated number plate recognition) and OCR library implementations Exposure to process modelling, for example in BPMN IoT relay control ...

languages (consideration for others possible). Experience in a product-driven, fast-paced environment (e.g., startup or tech company). Willingness to work with Kotlin (current server-side language). Experience with relational databases. Working knowledge of cloud platforms, preferably Google Cloud Platform. Strong commitment to code quality, efficient ...

professional software development experience Strong proficiency in high-performance Python (deep ecosystem knowledge and best practices) Experience with at least one JVM language (Java, Kotlin, Scala) is an advantage Background in distributed systems and large-scale compute frameworks Familiarity with Docker, Kubernetes, Linux environments, and CI/CD automation ...

Rust preferred , but you should be strong in at least one systems/statically typed language: C++/Java/Go/C#/Kotlin/similar Nice to have Strong preference Understanding of trading systems, market structure, or strategy implementation Bonus DeFi familiarity: smart contracts, blockchain APIs ...

looking for several people to join a growing team. Technical Skills Strong expertise in Java or Scala (preferred) Experience with languages such as Kotlin, Ruby, or JavaScript Deep understanding of: Programming paradigms Code design Testing strategies Accessibility Performance Security Proven ability to apply a range of testing tools ...

play a key part in shaping architecture, mentoring engineers, and driving best practices across the platform. They’re looking for people with experience in: Kotlin (or strong Java engineers willing to transition) AWS or other major cloud platforms Event-driven & microservices architectures Working in modern, product-driven tech environments ...

functional team Work closely with product managers and business stakeholders to align technical direction with strategic goals Write high-quality, production-ready code using Kotlin or Java Lead by example through code reviews, architectural decisions, and continuous delivery practices Drive improvements in engineering practices, tooling, and team workflows Help ...

their flagship product, a 24/7 mission-critical platform supporting national infrastructure, which means proper engineering challenges and real-world impact. 🛠️ Tech stack : Kotlin, Python, Terraform, AWS Bonus if you have any experience with Node or Typescript/JavaScript 🎯 What you'll be doing: Breaking down legacy monolith ...

looking for 6+ years' software engineering experience Strong background in Android internals, AOSP, frameworks or OS-level development Proficiency in C++ and Java (Kotlin is useful but not essential) Experience building or maintaining system components rather than apps Exposure to embedded, device-level or resource-constrained environments is beneficial ...

Sunday Times), alongside product and design, with real autonomy and influence. What You’ll Do ● Maintain the existing Android app end-to-end ● Android (Kotlin) focus includes rolling out white‐label releases, fixing critical bugs, and building new features ● Support iOS (Swift) debugging and UI improvements ● Collaborate closely with … owning problems end-to-end and working autonomously ● Happy moving fast in a startup environment where things evolve Skills & Experience Must-haves ● Android: Solid Kotlin & Jetpack Compose experience ● Swift: UIKit experience ● Deep knowledge of MVVM & Clean Architecture patterns ● Track record of building modular & testable code ● Good understanding of dependency ...

Ownership: Take total agency over the stack, connecting new services and remodeling infrastructure to create a seamless experience. Mission-Critical Problem Solving: Use Java, Kotlin, and Python as tools to solve ambiguous, high-stakes requirements where reliability is a matter of global security. What you'll bring High Ownership ...

Datadog, Sentry, Crashlytics or similar) Practical knowledge of networking/auth/API interactions common in mobile SDK integrations Experience with native mobile development (Kotlin or Swift) Comfortable debugging mobile issues and reading logs — able to reproduce simple issues locally or via sample apps Solid ticketing discipline: able ...

just “work on tickets.” You’ll be trusted to own the mobile experience end-to-end. Full ownership of our Android app (Kotlin, Jetpack Compose) Shipping white-label Android releases for clients Fixing critical issues and improving overall app stability and performance Building new features with a focus … about how AI can change the way we build software You’re pragmatic, thoughtful, and opinionated about architecture and quality Core Skills & Experience Strong Kotlin experience and deep familiarity with Jetpack Compose Working knowledge of Swift and UIKit Solid understanding of MVVM and Clean Architecture patterns Experience building modular ...

their sector. We build scalable, reliable, and innovative software solutions that power our core products and services. We're looking for a Staff Kotlin Engineer to provide technical leadership and drive the development of our next-generation platforms. Key Responsibilities Lead the design and implementation of scalable, high-performance ...

their sector. We build scalable, reliable, and innovative software solutions that power our core products and services. We're looking for a Staff Kotlin Engineer to provide technical leadership and drive the development of our next-generation platforms. Key Responsibilities Lead the design and implementation of scalable, high-performance ...

Java/Kotlin Team Lead - London - 6 months - Circa £650pd - 3 days pw We are partnered with a tech client who are looking for a Lead Backend Engineer with strong experience in Java and/or Kotlin to take a key technical leadership role within a backend-focused … Proven experience as a Lead Java Engineer in backend-heavy, multi-level engineering teams Strong expertise in Java 17+ , with Spring Boot or Micronaut ; Kotlin experience is a bonus (or willingness to learn) Hands-on experience with event-driven architectures , Kafka , microservices, and enterprise integration patterns Solid understanding ...