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Role:Mobile Backend Developer - Kotlin and java.

Kotlin Developer - Contract (Outside IR35).

Kotlin (or another JVM based language).

The ideal candidate should have experience in native mobile application development, particularly in Swift or Kotlin, and a passion for delivering high-quality code.

At Katanox we're looking for a Full Stack Engineer (Kotlin, React) to join our team. We are looking for a Full Stack Engineer who is equally comfortable building robust backend services in Kotlin and crafting polished, performant UIs in React. Design, build, and maintain Kotlin‑based backend servi

A leading AI-driven insurance technology firm is looking for a Senior Backend Engineer to develop scalable data systems in Kotlin.

The ideal candidate will have a Bachelor's degree in a related field, over 5 years of experience in software engineering, and strong skills in Java and Kotlin.

This remote position focuses on evaluating and optimizing AI-generated code, implementing Kotlin solutions, and documenting modern Android practices. A tech innovation firm is seeking a Kotlin Coding Specialist for a freelance AI Trainer project.

Strong skills in SwiftUI or Kotlin are essential, alongside experience mentoring and collaborating with teams.

A leading global crypto company is seeking a Software Engineering Intern to support the development of APIs for crypto trading and gain experience in building Kotlin-based backend systems.

A prominent insurance technology firm is seeking a mid-senior level Software Engineer to create impactful software.The successful candidate will provide technical leadership while working in agile teams.Responsibilities include building web-based applications and maintaining APIs, as well as mentori

The ideal candidate will have experience with Java 9+, Spring Boot, and Kotlin, along with a solid background in eCommerce.

Strong proficiency in Java/Kotlin, experience with Spring Boot and RESTful Services. Java / Kotlin Developer Digital Assets (German-speaking).

Strong proficiency in Kotlin and Java. Spring Webflux, Kotlin Coroutines. Remote Full-Stack Developer (Kotlin/Java/React + AI Focus).

Apply today and teach AI how to code like the best Kotlin engineers in the world. Kotlin Coding Specialist – AI Trainer. Kotlin Coding Specialist – AI Trainer.

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

Key qualifications include over 5 years of Android development experience in Kotlin, knowledge of mobile analytics, and performance optimization skills.

A progressive financial technology company in Manchester is looking for Software Engineers to design and build scalable backend systems using Kotlin and AWS.

Ownership and delivery on components (Java/Kotlin) within the Core Prime Brokerage platform; hands‑on development.

The ideal candidate must have a strong knowledge of Kotlin and a willingness to learn new technologies.

A leading technology firm is looking for a Senior Software Engineer to design and build backend services for a scalable marketing platform.The ideal candidate has strong JVM-based development skills, experience with data-driven APIs, and a solid background in SQL.This role involves owning API design

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

The ideal candidate will have over 4 years of experience, proficient in Kotlin and Android development.

The ideal candidate has strong experience in Java or Kotlin and Spring Boot to build reliable, scalable applications.

Candidates should have experience in JVM-based languages, particularly Kotlin, and familiarity with Agile practices.

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.

A leading cashless payment solutions firm in the UK is seeking a backend developer proficient in Kotlin.

In this role, you'll write clean, maintainable code using Kotlin while working collaboratively in an Agile environment.

The ideal candidate will have at least 5 years of experience in Java or Kotlin and a passion for customer-oriented solutions.

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

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

A dynamic fintech company in Greater London is seeking a Senior Backend Engineer to enhance their payment management platform.This role requires over 6 years of backend engineering experience, ideally with JVM-based languages and cloud platforms.Responsibilities include collaborating with cross-func

The role involves hands-on work across the Android stack using Kotlin and contributes to a modern consumer product. Candidates should have at least 5 years of commercial Android experience and a deep knowledge of Kotlin.

We’re looking for Kotlin specialists who can take real-world engineering scenarios—such as bug reports or feature requests in a Git repository—and produce clean, efficient, and idiomatic solutions using the Kotlin programming language. You should have hands-on experience with modern Android an

A fast-growing fintech company based in London is seeking a Senior Java/Kotlin Engineer to design and maintain high-throughput backend services. The ideal candidate has over 8 years of experience in software engineering, especially with Java and Spring Boot, and an interest in Kotlin.

You will design solutions, develop and deploy high-quality code primarily using React and Kotlin, and work closely with product managers and designers. Ideal candidates should have a degree in a STEM subject, along with 3+ years of experience in a mature Engineering team and technical expertise in J

This role involves native mobile app development using Swift and Kotlin, collaborative work for feature alignment, and real-time data synchronization with backend APIs.

As a Backend Developer (Kotlin/Java) at CIMAR, you will:. Build and support backend services in Kotlin to support a web UI and a set of remote gateways.

A financial technology startup in the United Kingdom is seeking a Backend Developer to build secure and performant solutions using Kotlin or Java.

Ideal candidates should have strong experience in Android development with Kotlin, and knowledge of modern architecture approaches such as Jetpack Compose and MVVM.

A tech company dedicated to digital delivery is recruiting a Contract Senior Java / Kotlin Engineer to work on-site in Spitalfields, London. Candidates should have over 5 years of experience in Java or Kotlin, along with strong Test Driven Development and agile experience.

Ideal candidates have experience in Java and Kotlin, with a passion for technology and teaching others.

Candidates will design technical solutions, code primarily in React and Kotlin, and engage in continuous deployment and improvement.

A leading data technology company in the UK is seeking a Senior Android Engineer to enhance their flagship Kotlin app. The ideal candidate has over 5 years of Android development experience and a strong command of Kotlin.

The ideal applicant has over 5 years of experience, strong proficiency in Kotlin and Jetpack Compose, and a solid background in unit testing.

This role involves building new features with Kotlin, collaborating with cross-functional teams, and maintaining a high-quality codebase in a fast-paced environment.

You'll be working on an app entirely built in Kotlin utilizing modern tools like Coroutines and Flow. If you have startup experience and are keen on developing your Kotlin Multiplatform skills, we want to hear from you.

The ideal candidate will design scalable backend services using Kotlin or Java, contributing to the bank's growth and innovation in financial services.