1 to 25 of 46 Kotlin Jobs in the City of London

VIPER architecture alongside modern Android best practices. Ensure high-quality, maintainable code and scalable solutions. Required Skills & Experience Proven experience leading Android teams and mentoring developers. Deep expertise in Kotlin , Java , RxJava , and Jetpack Compose . Strong understanding of Android architecture patterns (including VIPER , MVVM, and Clean Architecture), asynchronous programming, and UI/UX best practices. Hands-on experience More ❯

with Java Good understanding of JVM (memory model, concurrency, data structures) Spring framework, Spring Boot Maven Knowledge of REST APIs & Microservices MongoDB JUnit and TDD Nice to haves: AWS Kotlin Git Pipelines Javascript, React Redis Knowledge of Linux Key Details Reporting to: CTO Hours: Full time Location London - Hybrid WFH model, x2 days a week onsite (Wed/Thurs More ❯

in native Android development, with a strong portfolio of shipped, consumer-facing applications. Required Technical & UI/UX Skills Deep expertise in native Android UI/UX development, including Kotlin and modern frameworks (e.g., Jetpack Compose, Coroutines, Flow). Demonstrated experience building complex, real-time, data-intensive user interfaces (e.g., chat applications, financial dashboards, real-time streaming apps). More ❯

in native Android development, with a strong portfolio of shipped, consumer-facing applications. ? Required Technical & UI/UX Skills ? Deep expertise in native Android UI/UX development, including Kotlin and modern frameworks (e.g., Jetpack Compose, Coroutines, Flow). ? Demonstrated experience building complex, real-time, data-intensive user interfaces (e.g., chat applications, financial dashboards, real-time streaming apps). More ❯

opportunity to carve out the future, including your role in a growing and ambitious business. We would love to hear from you if 👇 ✅You bring deep technical expertise in Kotlin, Jetpack Compose, concurrency (coroutines/flows), persistence (Room/Realm), architecture patterns (MVVM/MVI), and testing - and are motivated by solving challenging technical problems. ✅ You’re an Android More ❯

including AWS design, security, and observability. Mentoring colleagues, conducting code reviews, and supporting a culture of learning and improvement. Candidate Profile Significant experience in modern Java development (Spring Boot, Kotlin, or similar). Strong track record in designing and evolving scalable, Cloud-based systems. Practical experience with iterative development, automated testing, and CI/CD. A pragmatic and collaborative More ❯

to enhance user experiences and support delivery of high-quality products. Role: Senior Android Developer Location: London, UK Total comp: £65-£75k Requirements for the role: Strong experience in Kotlin and Android app development. Proven track record of building Enterprise level Android apps. Deep understanding of mobile development best practices, including UI/UX design principles, debugging, and testing. More ❯

and Node.js APIs Comfortable shipping to the App Store/Google Play Production experience at scale Good debugging habits and attention to detail Nice bonuses: Native mobile (Swift/Kotlin) Any exposure to Web3 or on-chain interactions A strong design/UX sense What’s on offer: Competitive salary + meaningful equity Flexible setup (remote or London) Team More ❯

Work closely with product, design and backend teams to deliver seamless, performant and visually polished user experiences. Integrate and extend React Native functionality using native modules in Swift or Kotlin when needed. Take ownership of app store releases, ensuring smooth submission, updates and maintennance processes. Manage observability and performance in production through tools like crash reporting, logging and analytics. More ❯

digital programmes. Key Responsibilities Lead the design, development, and delivery of enterprise-scale digital solutions. Work hands-on with modern technologies across multiple OOP languages (e.g. Java, C#, Python, Kotlin, or similar). Define technical architecture and mentor engineering teams through best practice, clean code, and agile delivery. Collaborate closely with product, design, and delivery leads to shape technical More ❯

with email standards and protocols (e.g. MIME, Gmail API) is a plus. Required Skills React Native (Expo) – advanced development and optimisation. TypeScript/JavaScript – daily use and strong understanding. Kotlin/Swift – for native components. Go – used for cryptography. C++ – for performance improvements and interface integration (secondary priority). GCP/AWS (light) – basic infrastructure setup and management (SES More ❯

Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with More ❯

hands-on experience in native Android development, with a portfolio of high-performance, public-facing applications. Required Technical & Android Skills ? Expert-level, production-grade experience with native Android development (Kotlin required). ? Demonstrated, deep expertise with Android's native call-handling APIs, specifically the CallScreeningService framework. This is a critical, non-negotiable skill for this role. ? Proven experience building More ❯

were looking for: 6+ years 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 This role offers the chance More ❯

re looking for: 6+ years 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 This role offers the chance More ❯

experience. Strong proficiency in high-performance Python, with a deep understanding of its ecosystems and best practices. Prior experience with at least one JVM-based language such as Java, Kotlin, or Scala is a plus. Solid understanding of distributed systems principles and experience working with distributed architectures. Experience with containerization technologies (e.g., Docker, Kubernetes). Experience working in a More ❯

AI is integrated into production workflows • Embedding engineering excellence and best practices across teams You’ll bring: • Proven experience designing large-scale, cloud-based systems (Python and Rust or Kotlin). • A track record of leading cross-functional initiatives with measurable business impact • A product mindset, you need to be able to balance technical vision with pragmatic delivery • Experience More ❯

Actions A note on Go experience Go experience is ideal but not required . If you’ve built distributed systems at scale in a strongly typed, compiled language - Rust, Kotlin, Java, Scala, C++, or similar - you’ll ramp up quickly here. What matters is your judgement around system design, concurrency, reliability and performance. Who this suits • Comfortable owning architecture More ❯

+ share options + 8% pension + private healthcare Location : London (On site) Sector : Cyber Secruity Skills : Software Engineering (Java/Python/Ruby/Go/Kotlin/.NET etc), AI Literacy, Best Practices, Product This is a chance to join a team where engineering and product thinking go hand in hand. As a Software Engineer here, you More ❯

with experience in Ruby on Rails, with production-level experience for at least 3 years. Has solid front-end development capabilities. Knowledge of NodeJS or other languages such as Kotlin, Swift or Go will be helpful, but not essential. • Is familiar with modern JavaScript frameworks, including StimulusJS for adding interactivity to HTML without complex JavaScript, focusing on the "HTML More ❯

React Native Developer - London - Hybrid Working - £90,000-£100,000 p/a - React Native, TypeScript, Some knowledge of Objective-C/Swift/Java/Kotlin Christopher Ali are recruiting on behalf of a prestigious data company who are on the lookout for a Senior React Native Developer to join their team. The role will require 1 day More ❯

not expected to code in production daily, but able to get into the detail where required). Experience across modern web and mobile stacks – ideally NodeJS, React, Flutter, Swift, Kotlin, GCP/AWS. Demonstrated ability to deliver complex product roadmaps on time and at scale. Commercial and product-minded – able to connect technology decisions with business value. Inspirational leadership More ❯

Experienced engineering leader with 6+ years leading multiple teams in product-driven environments. Strong technical background in cloud and distributed systems (experience with JVM languages like Java, Scala or Kotlin a bonus). Proven experience integrating AI/ML into live systems with measurable business outcomes. Excellent architectural judgement and a pragmatic approach to scaling systems and teams. Comfortable More ❯

Investment, Asset, or Wealth Management. Proven track record of leading frontend and mobile engineering teams , delivering high-quality applications in React/React Native , Swift (iOS) , and/or Kotlin (Android) . Strong understanding of secure API integration , authentication flows , and modern UI/UX architecture . Comfortable guiding teams through design implementation , collaborating with product and design using … improvement . Thrives in fast-paced, regulated environments where speed, compliance, and innovation go hand-in-hand. Your Technical Toolkit React/React Native/TypeScript Swift (iOS)/Kotlin (Android) JavaScript/HTML/CSS Figma/Git Testing frameworks : Jest, Cypress, XCTest, Espresso CI/CD pipelines : GitHub Actions, CircleCI, Bitrise Cloud-native architecture : AWS, Docker, Kubernetes More ❯

or React Native , with hands-on experience in secure API integration , authentication flows , and frontend architecture . Strong proficiency in native mobile development using Swift (iOS) and/or Kotlin (Android) - capable of guiding mobile-first initiatives and bridging web-mobile experiences. Skilled in writing clean, maintainable, and well-tested code , with a strong grasp of TDD/BDD … across teams. Energized by fast-paced, regulated environments where speed, compliance, and innovation go hand-in-hand. Your Technical Toolkit React/React Native/TypeScript Swift (iOS)/Kotlin (Android) JavaScript/HTML/CSS RDBMS (Oracle, Sybase)/NoSQL (Document DB) AWS/Docker/Kubernetes CI/CD pipelines : GitHub Actions, CircleCI, Bitrise Testing frameworks : Jest More ❯