1 to 25 of 34 Kotlin Jobs in London

date with the latest Android trends, tools, and technologies Required Skills & Experience 5+ years of experience in Android development Strong proficiency in Kotlin (and solid knowledge of Java) Experience with modern Android architecture patterns ( MVVM, Clean Architecture ) Deep understanding of Android SDK, Jetpack components, and app lifecycle Experience with ...

Microservices Architecture Exposure to Big Data technologies such as: Kafka, Spark, Hadoop etc Strong understanding of clean code principles Experience working with AWS Cloud Kotlin experience (preferred ...

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 ...

delivering secure, accessible, and user-centric digital services in line with public sector standards. Essential Requirements: Strong commercial experience developing native Android applications using Kotlin (and/or Java) Proven Central Government project experience (essential) Good understanding of Government Digital Service (GDS) principles and accessibility standards Experience working ...

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 ...

code Skills: Proven experience working as a Mobile Engineer on consumer‐facing applications Strong hands‐on experience with iOS (Swift) and/or Android (Kotlin) Experience integrating with GraphQL‐based APIs Experience building transactional, pricing, or e‐commerce‐driven user journeys Strong understanding of mobile performance optimisation and stability ...

prototype ideas and help scale them into reliable production systems Occasionally contribute small frontend updates (React/TypeScript) Tech Requirements Must have: Java or Kotlin, Spring Boot MySQL, OpenSearch, AWS Nice to have: Groovy, Ruby on Rails, React/TypeScript Candidate Profile Several years' backend engineering experience Prior startup ...

patterns, and standards. We're looking for a collaborative, proactive, flexible, and detail-oriented individual with a passion for innovation. Strong development experience using Kotlin, including integration and unit testing. Strong understanding and experience with Android architecture (multi-modules, Dependency Injection, MVVM). Proficiency in building user interfaces with ...

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 ...

looking for a collaborative, proactive, flexible, and detail-oriented individual with a passion for innovation. Your technical toolkit should include: Strong development experience using Kotlin, including integration and unit testing. Strong understanding and experience with Android architecture (multi-modules, Dependency Injection, MVVM). Proficiency in building user interfaces with ...

looking for a collaborative, proactive, flexible, and detail-oriented individual with a passion for innovation. Your technical toolkit should include: Strong development experience using Kotlin, including integration and unit testing. Strong understanding and experience with Android architecture (multi-modules, Dependency Injection, MVVM). Proficiency in building user interfaces with ...

patterns, and standards. We're looking for a collaborative, proactive, flexible, and detail-oriented individual with a passion for innovation. Strong development experience using Kotlin, including integration and unit testing. Strong understanding and experience with Android architecture (multi-modules, Dependency Injection, MVVM). Proficiency in building user interfaces with ...

stability Contribute to consistent cross-platform user experiences Profile The Mobile Engineer will have strong experience with iOS (Swift) and/or Android (Kotlin) Experience integrating with GraphQLAPIs Experience building user experiences tied to transactions, pricing, or eCommerce flows is strongly preferred Ability to work in fast-paced, evolving ...

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 ...

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 Kotlin. UI ...

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 ...

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 ...

Senior Kotlin Engineer Ncounter is supporting a leading organisation within the publishing and media space as they look to strengthen their backend engineering capability. This team is responsible for building and evolving platforms that aggregate, process and distribute large-scale editorial and content datasets, enabling internal teams and external … information in near real time. You will join a highly capable engineering function focused on delivering scalable backend services, working across API development and Kotlin-based microservices that power content ingestion, indexing and distribution workflows. The environment is data intensive, with a strong emphasis on performance, reliability and clean ...

Senior Android Engineer (Contract) | Kotlin, Jetpack Compose, Coroutines, Flow | High-Traffic Consumer App | £400/day | Remote (UK) | Outside IR35 We’re hiring a Senior Android Engineer (contractor) to join a product-focused team building a high-traffic consumer application used at scale. This is a hands-on role … scale Android app used by thousands/millions of users Working closely with product and design to make pragmatic technical decisions Writing clean, maintainable Kotlin code in a modern architecture Contributing to architectural direction (not just implementing tickets) Improving performance, reliability, and overall app quality Reviewing code and raising ...

Senior Android Engineer (Contract) | Kotlin, Jetpack Compose, Coroutines, Flow | High-Traffic Consumer App | £400/day | Remote (UK) | Outside IR35 We’re hiring a Senior Android Engineer (contractor) to join a product-focused team building a high-traffic consumer application used at scale. This is a hands-on role … scale Android app used by thousands/millions of users Working closely with product and design to make pragmatic technical decisions Writing clean, maintainable Kotlin code in a modern architecture Contributing to architectural direction (not just implementing tickets) Improving performance, reliability, and overall app quality Reviewing code and raising ...

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 ...

major new features, as well as improving and maintaining existing functionality for The Guardian’s Android apps Our current codebase is 90%+ in Kotlin, but you may be required to work with Java too. You won't be coding in isolation - our culture is strongly collaborative, whether pair … applications. You aspire to be an expert in Android development and have a strong interest in growing your skills You’re confident coding in Kotlin building in Android studio. You have some experience with Java or are willing to learn. You are curious, passionate about technology and finding creative ...

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 ...

Mobile Android (Kotlin) Engineer - London, Hybrid **NO SPONSORSHIP - Must have the right to work full time in the UK** Daily Rate: £300 PAYE/£350 via Umbrella per day Location: London- Hybrid 3 days/week Overview A major banking company are looking for a Mobile Android Engineer … development methodologies popular in Android and be able to dive deep and rapidly iterate on ideas with your team despite some ambiguity. Skills Strong Kotlin proficiency Experience working on modern app architecture (MVVM, Jetpack Compose, distributed app structures, migrated codebases, modularised apps) Moderate to intermediate AI tooling adoption (Experience ...