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Senior Software Engineer Tech: TypeScript / Kotlin. Back End Agnostics welcome. Office: Remote, but meet up once a month or so in London. Level: Staff / Principal Level. Salary: £100-140k Eng Size: 50 We’re working with a globally recognised platform helping organisations build more ethical practices and infrastructure. They’re looking for a very Senior Engineer who combines strong product instincts with the experience of building in fast-moving, scaling environments. This role is for someone who’s been a pivotal engineer during a scale-up phase. Someone who raises the bar internally, not just meets it. They need this person to embed themselves as the technical role model and have real ownership of product direction whilst taking full advantage of the AI tooling they have on offer.. What you’ll be doing • Building high-quality, user-facing features using React and TypeScript, • Contributing to backend services in Kotlin/Java, • Working closely with Product and Design to shape and deliver impactful features, • Owning problems end-to-end, from discovery through to production, • Setting and evolving engineering standards, practices, and ways of working, • Leveraging modern AI tooling to improve velocity, quality, and developer experience What they’re looking for • Experience as a key engineer in a startup or scale-up environment, • Strong React and TypeScript expertise, with solid backend experience (Kotlin or Java), • A genuine product mindset — you think in terms of user outcomes, not just delivery, • Proven ability to raise engineering standards and influence peers, • Comfortable using AI tools as part of your day-to-day development workflow, • Pragmatic, fast-moving, and comfortable with ambiguity

!! IMMEDIATE JOINERS !! Software Engineer Location : Bournemouth / Scotland / London Work mode : Onsite Experience: 2–5 years UK based candidates only CITIZEN & DEPENDENTS Are you a mobile enthusiast who lives for clean code and smooth UI transitions? We are looking for a Software Engineer with 1+ years of professional experience to join our engineering team. At this stage in your career, you’ve moved past "Hello World" and are ready to tackle real-world scalability, complex APIs, and the occasional Gradle headache. If you’re eager to learn from seniors while making a tangible impact on a product used by thousands, let’s talk. 🛠️ What You’ll Do • Feature Development: Collaborate with our product and design teams to build and ship high-quality features for our Android application., • Code Quality: Write clean, maintainable code in Kotlin (and some legacy Java) while following modern architectural patterns (MVVM/MVI)., • UI/UX Implementation: Turn Figma designs into pixel-perfect layouts using Jetpack Compose or XML., • Bug Squashing: Identify, debug, and fix performance bottlenecks and edge-case crashes., • Continuous Learning: Participate in code reviews, contribute to technical documentation, and stay up-to-date with the latest Android Jetpack libraries. ✅ What You Bring • Experience: 1+ years of professional experience in Android development (internships count if they were high-impact!)., • Language Proficiency: Strong foundations in Kotlin and a solid understanding of Java., • Android SDK: Familiarity with Activities, Fragments, Services, and Lifecycle components., • Networking: Experience working with RESTful APIs using Retrofit and handling JSON data., • Tooling: Proficiency with Git and a working knowledge of Android Studio., • Mindset: A "can-do" attitude and the humility to ask for help when a bug just won't budge. 🌟 Bonus Points if You Have: • A published app on the Google Play Store (send us the link!)., • Experience with Dependency Injection (Hilt/Dagger)., • Familiarity with Coroutines and Flow for asynchronous programming., • A passion for Material Design 3. 🚀 Why Join Us? • Mentorship: Work directly with Senior Developers who actually enjoy teaching., • Tech Stack: We stay on the cutting edge—no ancient legacy codebases here., • Growth: A clear path to becoming a Mid-level Developer within [Timeframe]., • Perks: [Insert Perks: e.g., Remote-first culture, Learning stipend, Health benefits]. #java #android #software #dotnet #c++ #c #immediatejoiner #softwaredevelop #developer

!! IMMEDIATE JOINERS !! Junior Application Developer (iOS) With C# & Swift Location : London Work mode : Onsite Experience: 2–5 years UK based candidates only CITIZEN & DEPENDENTS Are you a mobile enthusiast who lives for clean code and smooth UI transitions? We are looking for a Junior iOS Developer with 1+ years of professional experience to join our engineering team. At this stage in your career, you’ve moved past "Hello World" and are ready to tackle real-world scalability, complex APIs, and the occasional Gradle headache. If you’re eager to learn from seniors while making a tangible impact on a product used by thousands, let’s talk. 🛠️ What You’ll Do • Feature Development: Collaborate with our product and design teams to build and ship high-quality features for our Android application., • Code Quality: Write clean, maintainable code in Kotlin (and some legacy Java) while following modern architectural patterns (MVVM/MVI)., • UI/UX Implementation: Turn Figma designs into pixel-perfect layouts using Jetpack Compose or XML., • Bug Squashing: Identify, debug, and fix performance bottlenecks and edge-case crashes., • Continuous Learning: Participate in code reviews, contribute to technical documentation, and stay up-to-date with the latest Android Jetpack libraries. ✅ What You Bring • Experience: 1+ years of professional experience in Android development (internships count if they were high-impact!)., • Language Proficiency: Strong foundations in Kotlin and a solid understanding of Java., • Android SDK: Familiarity with Activities, Fragments, Services, and Lifecycle components., • Networking: Experience working with RESTful APIs using Retrofit and handling JSON data., • Tooling: Proficiency with Git and a working knowledge of Android Studio., • Mindset: A "can-do" attitude and the humility to ask for help when a bug just won't budge. 🌟 Bonus Points if You Have: • A published app on the Google Play Store (send us the link!)., • Experience with Dependency Injection (Hilt/Dagger)., • Familiarity with Coroutines and Flow for asynchronous programming., • A passion for Material Design 3. 🚀 Why Join Us? • Mentorship: Work directly with Senior Developers who actually enjoy teaching., • Tech Stack: We stay on the cutting edge—no ancient legacy codebases here., • Growth: A clear path to becoming a Mid-level Developer within [Timeframe]., • Perks: [Insert Perks: e.g., Remote-first culture, Learning stipend, Health benefits].

Commercial experience with Kotlin, or strong Java experience with a willingness to learn Kotlin. Contract Java/Kotlin Developer. We are looking for an experienced Java/Kotlin Developer to join a fast-paced engineering team working on modern developer tooling and compliance platforms.

Job Title:Full Stack Developer – Kotlin / Java. Kotlin, Java, SQL, HTML, and JavaScript.

The ideal candidate has a strong proficiency in Kotlin, excellent communication skills, and the ability to collaborate within a team.

Limelight Health is looking for a Senior Java / Kotlin Engineer to work on-site in Greater London or Leeds. Candidates should have over 5 years of experience in Java or Kotlin and practical experience in test driven development.

The tech stack is based on Kotlin, SpringBoot and AWS backend with TypeScript, React and Next. You have experience with Kotlin, Java, SpringBoot and AWS. Backend Software Engineer Java Kotlin AWS (PR/100709) London, England.

A prominent financial services firm in London is seeking a full stack developer skilled in Kotlin or Java, along with TypeScript.

Proficiency in JVM-based languages, specifically Java or Kotlin.

We primarily use Jvm based languages (Java/Kotlin) but we also have parts of the platform that use other languages as needed.

Citibank (Switzerland) AG is seeking a Full Stack Engineer (Kotlin and/or Python) in Greater London.

V is looking for a (Mid/Senior/Staff) Backend Engineer in London to build and test services using modern tools from the JVM ecosystem such as Kotlin, Spring, and Vert.

The ideal candidate has substantial experience in Java or Kotlin, strong background in team development, and stakeholder management.

Ideal candidates will have experience in Kotlin and Jetpack Compose, alongside a passion for mobile development.

Client Server in Greater London is looking for a Backend Software Engineer proficient in Java, Kotlin, SpringBoot, and AWS.

Oliver Bernard is seeking a Senior Android Engineer in London to develop and enhance their flagship app, built fully with Kotlin. The role demands over 5 years of Android experience and deep Kotlin knowledge, where you will join an engineering group focused on major new features and architectural di

A leading technology company in Greater London is seeking a full-stack cross-platform Android Engineer to lead mobile development projects using Kotlin and Rust.

Key skills include proficiency in Kotlin/Python, microservices architecture experience, and a knowledge of trading workflows. Full Stack Engineer (Kotlin and/or Python) at the VP level to design and develop innovative solutions within Equities Technology.

Ideal candidates will have strong Kotlin or Java backgrounds, delivery ownership, and a keen interest in payments and travel distribution.

Fetchrewards is seeking an Android Engineer to contribute to our innovative banking solutions.The position offers a salary range of £78,000 - £110,000 and allows for remote work within the UK.You will work in a collaborative squad, focusing on enhancing customer experiences and product development

Dangote Industries Limited in the Greater London area is looking for a motivated engineer to join our Recurring Payin team.You will design and maintain backend services that power automated payments into Wise, enhancing our Direct Debit API capabilities.This role involves building and maintaining RE

The role involves developing high quality code in Kotlin while collaborating with cross-functional teams.

Katanox is seeking a Full Stack Engineer to develop robust backend services in Kotlin and polished UIs in React.

If you enjoy solving complex domain challenges, shaping architecture, and writing elegant Kotlin in a high-trust engineering culture – we’d love to meet you. As a Senior Kotlin Engineer, you’ll join a newly forming pod with the opportunity to influence architectural decisions, shape design dis

Ideal candidates are passionate about Android development, experienced in Kotlin, and dedicated to testing and contribution to the community.

This internship offers hands-on experience with backend systems, specifically in Kotlin, enabling users to make secure deposits and withdrawals.

Oliver Bernard in Greater London is seeking a Lead Mobile Engineer specializing in Kotlin Multiplatform.

Lendable Ltd is looking for a Staff Kotlin/JVM Engineer in London. The role requires strong commercial Kotlin skills, with oversight of API integrations and existing services scaling.

An innovative fintech company in London seeks a Lead & Senior Software Engineer to drive product development and shape the future of digital finance.You'll be the technical heartbeat of the team, building scalable business products and leading a culture of collaboration.The ideal candidate has exper

Ideal candidates are proficient in Kotlin and Jetpack Compose, possess strong product intuition, and have experience in architecting production apps.

A global technology company in the United Kingdom is seeking a skilled Kotlin / Java Developer for a full-time contract role. Candidates should possess strong experience in Kotlin or Java, API development, and modern coding practices.

Full Stack Engineer – Kotlin, React / Typescript – Contract – London. Talent-Relay has partnered with a global player in the financial services sector to urgently onboard an experienced Full Stack Engineer with experience of Kotlin, React / Typescript into a project team, building secure, scal

Ideal candidates will have proficiency in Java or Kotlin, cloud-native architecture experience, and a collaborative mindset.

We’re looking for Kotlin developers at all levels to join long-term greenfield projects with leading financial institutions in London. You’ll be part of small, high-calibre engineering teams delivering strategic rebuilds and modernisation projects, replacing legacy systems with clean, cloud-alig

The successful candidate will have at least 2 years of experience in Android development using Kotlin and be familiar with cloud messaging APIs and micro-services.

Pleo is seeking a Backend Engineer in Greater London to design and maintain scalable microservices primarily using Kotlin.

In this role, you will design, build, and release complex mobile features for both Android and iOS using Kotlin Multiplatform.

Righttalentrightnow is looking for a mobile developer in Greater London to build high-quality native Android applications using Kotlin and Jetpack Compose.

Citibank (Switzerland) AG is seeking a Java (Kotlin) Developer to engineer innovative solutions for finance.

Lead Mobile Engineer – Kotlin Multiplatform (KMP). You’ll be a senior mobile engineer working mainly on apps, using Kotlin Multiplatform (KMP) to build features that work on both Android and iOS.

Ideal candidates possess experience with Android using Kotlin and Jetpack Compose, and a strong understanding of mobile architecture. You'll lead feature delivery, collaborate with cross-functional teams, and write clean Kotlin code.

The role involves designing and developing scalable Android applications using Kotlin and Java, integrating REST APIs, and mentoring junior developers.

A leading healthcare technology provider is seeking a remote Backend Developer proficient in Kotlin and Java.

Be part of a design committee that decides how the Kotlin API should be shaped. Participate in creating standard Kotlin tools, specifications and language features. In general, if you see yourself reading a Unicode standard, exploring how five other languages transform strings to bytes, figuring out

A leading technology firm in the UK seeks Kotlin developers for greenfield projects. Desired candidates will have strong Kotlin skills and problem-solving abilities, with the opportunity to influence architecture and work in a collaborative environment.

You will work closely with product and design teams to develop and deploy beautiful Android applications using Kotlin and Jetpack Compose.

Trade Republic is seeking (Mid/Senior/Staff) Backend Engineers in London to build and design cloud services using JVM tools like Kotlin and Spring.