1 to 25 of 29 Permanent Kotlin Jobs in London

front-end pipelines and tools . Experienced with Native modules (C++) , WebSockets, RESTful based APIs . Experience in Swift/Objective-C (iOS) or Kotlin/Java (Android) for low level implementation. Important information for candidates Recruitment scams have become increasingly common. To protect yourself, please keep the following ...

front-end pipelines and tools . Experienced with Native modules (C++) , WebSockets, RESTful based APIs . Experience in Swift/Objective-C (iOS) or Kotlin/Java (Android) for low level implementation. Important information for candidates Recruitment scams have become increasingly common. To protect yourself, please keep the following ...

Developer – Required Skills: Strong experience in iOS development Expertise in Swift UI, Objective-C, UIKit, Xcode Experience with GitLab/SourceTree Exposure to Java, Kotlin & Android common libraries stack (OKHttp, Retrofit, etc.) Hands-on experience with Jetpack Compose Good understanding of HTTP Client/Server Architecture Experience ...

evolving environment. Strong communication and collaboration abilities, with a focus on mentoring junior team members. Knowledge of front-end technologies (e.g., React, SwiftUI, Kotlin) is advantageous. Nice to Have: Experience in financial services or banking, with an understanding of industry-specific regulatory and compliance requirements. Familiarity with DevOps practices ...

Observability and visualisation tooling including Grafana and Tableau Our wider engineering ecosystem also includes web and mobile technologies, including TypeScript/JavaScript, Swift, and Kotlin, alongside a range of testing, analytics, and operational tooling. If you can bring some of these skills and experiences, along with transferable strengths ...

migrating serverless components (e.g., AWS Lambda) into Rails applications. Familiarity with Vue.js to support frontend collaboration. Experience working with mobile applications (React Native/Kotlin/Swift). Experience working in regulated industries or multi-client B2B systems. Contributions to open-source Ruby projects or technical blogging. Benefits Private ...

working with DevOps including Docker, Kubernetes and GitLab You're proficient with at least one coding/scripting language for automation e.g. Python, Kotlin, TypeScript You're collaborative with great communication skills You're degree educated in a STEM discipline, having achieved a 2.1 or above Apply ...

communication skills with the ability to influence and mentor Python Experience is preferred - though experience with similar languages are a plus e.g. Clojure, Rust, Kotlin, Scala, Golang. AWS Experience (Hands-on work with GCP/Azure is okay too) BSc in Computer Science Why this role stands out: High ...

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 ...

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 ...

Job Description TrueNorth are working with a successful tech consultancy that works heavily in the public sector - we're looking for QA Managers for some immediate contract roles. Key skills: Integration Testing – Automated tests in ...

identity flows across multiple geographies and regulatory environments. What You’ll Do Lead the design, build, and evolution of fullstack applications using React (TypeScript), Kotlin, Python, and Ruby Architect and develop scalable APIs and microservices deployed on AWS, Azure, or GCP Take ownership of complex features from design through … Qualifications 5+ years of professional experience in fullstack or software engineering Strong proficiency in React/TypeScript and at least one backend language (Python, Kotlin, or Ruby) Proven experience designing and building distributed systems and scalable architectures Experience building and operating APIs and microservices in cloud environments (AWS, Azure ...

plus if you have Experience in retail , e‐commerce , or marketplace platforms Expertise in one or more backend languages (e.g. Go, Kotlin ) Background working with data‐intensive systems , experimentation, or analytics to inform and validate product and technical decisions for B2B/merchant use cases Our Commitment to Diversity ...

whether that's AI-powered prototyping, agent systems, or orchestration. MCP experience is a plus. Deep expertise in at least one programming language (JavaScript, Kotlin, Swift, or similar). We expect you'll use AI tools to accelerate your work — but there's no substitute for genuine fluency. Creative ...

full software development life cycle. Your Responsibilities: Lead feature delivery and shape technical strategy Collaborate closely for pixel-perfect implementation Write clean, maintainable Kotlin code with Jetpack Compose Champion TDD, CI/CD, and other best practices Mentor and support fellow engineers What We're Looking For: Proven experience … with Android apps using Kotlin and Jetpack Compose Strong understanding of mobile architecture and design patterns Passion for agile development and quick delivery Comfortable leveraging AI tools to boost productivity Collaborative mindset focused on continuous improvement Rewards & Benefits: 27 days holiday (rising to 30) + bank holidays Bonus scheme ...

Backend Engineer with deep expertise in JVM technologies to help scale and enhance their high-performance systems. There will be a requirement to use Kotlin moving forwards! This is an opportunity to work with modern architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities … team Stay curious about the wider engineering landscape and bring relevant insights back to the team Key Requirements Strong commercial experience in Kotlin or JVM technologies for backend development Confidence working with Spring Boot or Kotlin or Java to build robust microservices A passion for creating API-first ...

Backend Specialist (Java & Kotlin) Location: London (Hybrid: 2-3 days per week) Type: Full-time/Permanent Experience: 5-7 years We are seeking a high-caliber Backend Specialist with a strong foundation in Java and Kotlin to join our development team in London. In this role … maintainable backend solutions while collaborating with cross-functional teams to deliver high-performance features. Key Responsibilities Develop & Maintain: Build robust applications using Java and Kotlin within a Spring Boot environment. Architect: Design and implement scalable Microservices architectures. Collaborate: Work with Project Leads, BAs, and DevOps to translate requirements into ...

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 ...

outcomes for both customers and the wider business. What You’ll Be Doing Building and maintaining scalable, production-grade backend systems using Java or Kotlin Developing high-quality, maintainable code across a modern cloud-based architecture Collaborating with product and business stakeholders to turn commercial goals into clear technical … workflows, where they add meaningful value Requirements 4+ years’ experience as a Software Engineer or Backend Engineer Strong backend development experience with Java or Kotlin Solid understanding of frontend technologies such as React and experience supporting production-grade user-facing applications Experience working with databases such as PostgreSQL ...

Backend Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £120k Would you like to progress your career in an impactful hands-on Backend Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University … with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot and AWS backend with TypeScript, React and Next.js on the front end. You'll be hands-on with architecture, design and coding, including ...

confidence across web and mobile. Responsibilities Execute & Manage Testing : Own the manual testing lifecycle for web (Vue.js/Rails) and mobile (Native Swift/Kotlin) applications. Shift Left: Participate in design and requirements sessions, clarifying how A/Cs are tested before a single line of code is written. … backend and the client devices. The Tech Environment: Management: TestRail, Jira. Web: Vue.js (Frontend), Ruby on Rails (Backend). Mobile: Native Swift (iOS) & Native Kotlin (Android) as well as React Native. Note: While our stack includes RSpec and Vuewrapper, this is a functional QA role. You are not expected ...

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 ...

Senior Android Engineer to help shape a modular, scalable mobile platform used across multiple clients. The Role Build and scale Android apps using Kotlin + Jetpack Compose Drive a modular, reusable architecture (MVVM, multi-module) Contribute to a growing design system and component library Influence technical direction and architecture … decisions Collaborate with product, design, and distributed engineering teams What They’re Looking For Strong Kotlin and modern Android architecture skills Experience shipping apps to the Play Store Familiarity with CI/CD, testing frameworks, and best practices Comfortable working in fast-paced/scaling environments Nice to Have ...

mobile platforms at scale What they’re looking for 8+ years in mobile engineering, with 2+ years leading teams Deep expertise in Android (Kotlin) or iOS (Swift) , with exposure to both Strong understanding of modern architectures ( MVVM, MVI ) and UI frameworks ( Compose, SwiftUI ) Experience building and scaling high-traffic … mobile apps Ability to communicate effectively across technical and non-technical audiences Comfortable operating across both strategy and hands-on delivery Nice to have Kotlin Multiplatform or other cross-platform experience Background in AdTech, telecoms, or B2B2C environments Why join Own mobile at a critical growth stage Significant impact ...

Lead & Senior Software Engineer | Fintech Accelerator | London | Scale-up Impact The Opportunity Born from the successful launch of a major digital bank, we are hiring a high-growth venture team with a fresh mission. Building ...