22 of 22 Permanent Kotlin Jobs in the City of London

focused teams is essential, along with a passion for improving engineering culture and technical delivery. As well as .... Extensive Android development experience using Kotlin, Java, and modern frameworks such as Jetpack Compose Strong grounding in TDD, automated testing, mocking/stubbing, and performance engineering Experience influencing or leading ...

DevOps-driven teams, with a track record of championing engineering best practice. We’re looking for someone with: Strong experience building Android applications using Kotlin, Java, and Jetpack Compose Proven background in test-driven development, automated testing frameworks, mocking/stubbing and performance optimisation Experience leading and supporting engineering ...

success stories. A non-exclusive list of some of the tooling and technology we are currently using: * .NET Core 3.1, Node.js, Python, Java/Kotlin * Kubernetes, Terraform, infrastructure-as-code * Typescript, React, Node, GraphQL, Apollo * AWS: Lambda, ECS, CloudFront, API Gateway, DynamoDB, Aurora, S3, SQS, SNS, Kinesis * Azure, Functions ...

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/ ...

every couple of weeks. Requirements: • Strong experience with React and React Native • Hands-on experience with native iOS (Swift/Objective-C) and Android (Kotlin/Java) development (or the desire to pick this up) • Proven ability to build, deploy, and maintain mobile apps on the App Store ...

every couple of weeks. Requirements: Strong experience with React and React Native Hands-on experience with native iOS (Swift/Objective-C) and Android (Kotlin/Java) development (or the desire to pick this up) Proven ability to build, deploy, and maintain mobile apps on the App Store ...

cloud engineering. Strong understanding of distributed systems, performance and failure modes, and experience with observability tooling. Comfortable with several languages (e.g. Python, Java, Kotlin, TypeScript) and technologies like Kafka, Flink, Redis and clustered Postgres. Familiarity with networking concepts (routing, load balancing, service‐to‐service communication); bonus points for leading ...

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 ...

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 ...

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 ...

Senior Java/Kotlin Engineer – Technology Consultancy Location: Hybrid (2 days a week in London) Type: Full-time Salary - £130k Maximum Client They are forward-thinking technology consultancy that helps organisations solve complex problems with elegant, modern engineering. The team is built around curiosity, delivery excellence, and genuine collaboration. … scale-ups, and the public sector to design and build high-impact digital products. The Role We’re looking for a Senior Java/Kotlin Engineer who thrives in solving real-world problems and building robust, scalable systems. You’ll work closely with cross-functional project teams—architects, designers ...

join their team. 🎨 What You’ll Do Build and maintain Android app with high-quality, scalable code Contribute to cross-platform development using Kotlin Multiplatform (KMP) and Compose Multiplatform (CMP) Implement new features using Jetpack Compose and modern Android architecture Collaborate with designers, product managers, and backend engineers Integrate … performance Maintain and improve CI/CD pipelines (Bitrise) Participate in code reviews, design discussions, and agile ceremonies 💡 What We’re Looking For Strong Kotlin skills (Java knowledge a plus) Experience with MVVM/Clean Architecture Hands-on with Jetpack Compose, Hilt, Retrofit Exposure to or strong interest ...

looking for an experienced Kotlin & Swift Developer with strong computer vision experience to design, build, and maintain a high-performance Software Development Kit (SDK) used in security-critical mobile applications. This role sits at the intersection of mobile engineering, applied computer vision, and SDK architecture , and will play … 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 ...

Senior Android Engineer London (Hybrid — 2 days onsite per week) Kotlin • Compose • Coroutines • Modular Architecture • KMP A high-growth technology business in the data and privacy space is looking for a Senior Android Engineer to join the team building their flagship app. This product helps users understand, control … benefit from their data, and sits at the heart of a rapidly expanding consumer and B2B ecosystem. Their Android app is fully Kotlin-based, heavily modularised, and all new features are built with Jetpack Compose. Coroutines and Flows are used extensively throughout, testing is taken seriously (unit ...

This role offers the opportunity to influence the future of Android engineering for a major, high-traffic consumer application. If you’re passionate about Kotlin architecture, mobile scalability, and exploring hybrid delivery models, this role places you at the centre of an ambitious mobile evolution programme. We’re seeking … embed directly with engineering teams to accelerate parallel feature development. The Impact You’ll Make ● Lead the technical architecture of a large-scale Kotlin-based Android application. ● Evaluate hybrid delivery options, including integrating React Native or WebView-based experiences into native flows. ● Identify architectural simplifications that reduce complexity ...

extremely strong engineer team and have plenty of opportunities to learn from seniors. What You’ll Be Doing Developing and shipping new features in Kotlin, using Jetpack Compose to deliver world-class mobile experiences. Collaborating with designers, iOS engineers, and backend teams to craft beautiful, responsive UIs. Contributing … accessibility, and overall app experience across a variety of devices. Requirements for the role 3+ years of commercial Android development experience. Strong proficiency in Kotlin , Jetpack Compose , and modern Android frameworks. Deep understanding of lifecycle management , asynchronous programming , and UI state handling . Familiarity with clean architecture principles ...

Title: Senior Kotlin Developer Client: Leading Trading Firm Rate: Up to £850 p/d Duration: 6 Month - Rolling Location: London - Hybrid We are looking for a Java Developer, with strong experience working in the finance sector, to join a leading trading firm based in London and help them … This is a 6 month rolling contract with very high chance of extension! Skills/Experience Strong hands-on/commercial coding experience in Kotlin Experience working with Java Strong experience working in the finance sector - e-trading experience a big plus!! Strong Communication skills A personality and genuine ...

Serverside Kotlin Engineers We are looking for multiple Kotlin Engineers, who come from a Java background with ideally some knowledge of React.JS or TypeScript to work on a long term project. You will have minimum 3+ years serverside Kotlin experience 2 days a week in London … days WFH Stack - Java/Kotlin, AWS, Kafka, React.js £95k - £125k ...

London (2x per week) We are very excited to be continuing our partnership on this exclusive position to join the company as a Kotlin Software Engineer from a JVM background. You will be joining a highly innovative scale-up leading at the forefront of the GreenTech industry, as they … clean energy for the charging of electric vehicles. In this position, they are looking for experience in: 3+ years commercial experience JVM development - Java, Kotlin or Scala (Bonus) if you have already worked with Kotlin Microservices architecture Public cloud technologies e.g. AWS Have worked in modern, product-focused ...

role, you will: Build Granola for Android from the ground up, owning every layer from architecture to the final shipped experience Architect a modern Kotlin + Jetpack Compose codebase that feels native to Android from day one Bring Granola's audio magic, transcription, chat, and next-generation AI features … background looks something like: You've shipped polished Android apps end-to-end, from greenfield architecture to launch and iteration You're fluent in Kotlin, at home in Jetpack Compose, and willing to dive into lower-level Android frameworks when needed You've built (or are excited to build ...

care about 9-5 fixed hours; we care about delivery and excellence. One of our current projects requires deep expertise in Android (Kotlin). While we take on diverse projects across various stacks, your immediate priority will be owning and architecting a performance-critical mobile data collection ecosystem. This … that afternoon you might be building a slide deck for a client pitch or debugging a Docker deployment. What You’ll Do Architect & Build (Kotlin focus): Take full ownership of our high-performance Android data collection app. Expert-level Kotlin is essential here. Technical Decision Making: Choose ...