1 to 25 of 41 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 ...

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 ...

mindset to shape solutions from end to end. You’ll work on a wide variety of projects and gain exposure to technologies including Java, Kotlin, NodeJS, Spring Boot, RESTful microservices, React, NoSQL databases and cloud platforms. This role is ideal for engineers who enjoy variety, value continuous learning ...

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/ ...

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 ...

thinkers who care about scalable architecture, continuous deployment, clean code, business value and user experience - regardless of whether your background is Java, Go, Python, Kotlin, .NET, TypeScript, Data or anything else. Product-Minded: You don't just build to spec; you care about why you’re building ...

infrastructure Working across frontend, backend, and cloud services Aligning with MoJ, GDS and HMPPS engineering standards Tech Stack Frontend: Express.js, TypeScript, Nunjucks Backend: Kotlin, Spring Boot, REST APIs, event-driven architecture Cloud & DevOps: AWS, Terraform, GitHub Actions, Docker, Kubernetes Practices: TDD, pair programming, code reviews, secure-by-design, agile ...

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 Data Pipelines Strong understanding of software engineering ...

service to clients Drive continuous improvement and performance To be successful, you'll need to come equipped with: Senior-level experience in Android with Kotlin ( 6+ years ) Strong experience in either enterprise-level or business-critical Android applications (thinking again about security/compliance) Demonstrable knowledge of architectural practices ...

Android Engineer – Kotlin, Java, Kotlin Multiplatform Tech4Good (Hybrid, London) £80,000–£95,000 + 10% Bonus 2 Days per Week in London Office A global, mission-driven health tech company is looking for an experienced Android Engineer to help power the next generation of its member-facing mobile … continued growth following its recent Series C, the engineering team is expanding in London to support major product evolution, including a strategic transition to Kotlin Multiplatform (KMP) and Compose Multiplatform (CMP). The Role As an Android Engineer, you’ll play a critical role in shaping a high-impact ...

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 ...

learn, and visualisation tools. Experience building production-quality code and deploying models is important. Familiarity with SQL and relational databases required. Experience with Java, Kotlin, or Rust is beneficial Data Science: Solid grounding in statistical analysis, machine learning, and predictive modelling. Experience working with large-scale, time-series ...

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 ...

principles Experience working in a team-based development environment Nice to Have (Not Required) Experience with any of the following is a big plus: Kotlin Elixir Erlang No boxes to tick. Curiosity counts. Why Apply? Hybrid working (Cheltenham-based) Competitive salary (£50k–£60k) Modern tech stack and engineering-first ...

This business owns its project delivery with the customer (not working via frameworks); no stripey teams here! You'd bring JVM Language experience; Java, Kotlin or Scala, and might have tinkered with JavaScript/TypeScript and React too! Being so embedded with the customer, all projects require 5 days ...

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 ...

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 ...

Java/Kotlin Engineer Join one of the UK’s fastest-growing challenger banks as we continue to redefine what modern banking looks like. We’re building secure, scalable, and intuitive financial products — and we’re looking for talented Java/Kotlin Engineers to help us shape … London office to collaborate closely with engineers, product managers, and designers. What You’ll Do Develop scalable microservices using Java and/or Kotlin Design APIs and build integrations across our core financial systems Work with event-driven architectures (Kafka or similar) Write clean, testable, maintainable code following best ...

other engineers. Tackling complex, ambiguous problems with a product-first mindset. Contributing to agile ceremonies within a collaborative, high-performing team. Tech environment Android: Kotlin, Jetpack Compose, Coroutines Backend exposure: Kotlin/Spring Boot Cloud & Platform: AWS, Kubernetes, Elastic Stack, Prometheus, Grafana Strong engineering principles around availability, observability ...

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 ...