East London, London, United Kingdom Hybrid / WFH Options
Client Server
Backend Software Engineer/Developer (Java Kotlin AWS API) Hybrid WFH to £110k 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 educated management consultants, that is aiming to improve patient and … Software Engineer you will collaborate 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 complex business logic, authentication and … and liaise on bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems More ❯
Introduction In this role, you will have the autonomy to choose the right tool for the job and introduce emerging technologies. Technologies: API AWS Backend Java JavaScript Kotlin PostgreSQL Python React SQL Web Cloud More: As a hybrid WFH Backend Software Engineer/Developer (Java Kotlin AWS), I will be working on a Tech Salary … per year Requirements: Strong Java and Kotlin serverside development experience Good knowledge of AWS Experience of technically leading projects and mentoring others Good knowledge of SQL, PostgreSQL ideally Collaborative and keen to More ❯
Sling is from Avian Labs, Inc., created by product builders and engineers from Monzo, Square, and Cash App. Android at Sling Money Our Android app is built entirely in Kotlin with Jetpack Compose from day one, so there's no legacy Java or XML code to maintain. We use modern libraries and architecture, including Apollo GraphQL for networking, Room … for local storage, and Slack's Circuit framework to structure our Compose-driven UI. We've built our own Solana Kotlin library in-house to interface directly with the blockchain. The codebase is about three years old and we're entering a phase of rapid growth. Android is a critical platform for Sling, and we need to scale the More ❯
have at least 7 years experience building and shipping highly-available, fault tolerant, production ready distributed backend systems You have experience in any JVM based languages (such as Java, Kotlin, Scala) and are confident in your ability to build, debug and ship microservices You are customer focused and continuously suggest how the backend can provide the best Customer Experience … You pride yourself on consistent high levels of test coverage, strong technical documentation and effective monitoring Preferably exposure to technologies such as Kafka, PostgreSQL, Redis We use Kotlin, PostgreSQL, Kafka, Redis, Datadog, Amplitude, Grafana, BigQuery, ApacheSpark and more A passion for crypto and the transformations it enables COMPENSATION & PERKS Full-time salary based on experience and meaningful equity in More ❯
Job title: CONTRACT Kotlin Engineer - Up to £850 per day Client: Elite FinTech Client Experience Level: 3+ years Salary: Up to £850 per day (depending on levels of experience) Location: London (hybrid) Role: Our elite financial services client is looking for a Kotlin engineer to develop cutting-edge, high-throughput systems across a variety of greenfield projects. Experience … Kotlin (and ideally Java) development experience within financial services (mandatory) Strong experience with Containerisation tools such as Kubernetes and Docker Good experience with MongoDB, and Databricks Please apply using the links or reach out directly: (see below More ❯
I am currently working with a London-based financial services client who is actively seeking a Java/Kotlin developer to join a market-leading front office development team. What you'll need to succeed Java and Kotlin development experience within financial services (mandatory) Strong experience with Containerisation tools such as Kubernetes and Docker Good experience with MongoDB More ❯
Employment Type: Contract, Work From Home
Rate: £650.0 - £850.0 per day + Between £650-£850pd in-scope DOE
London, South East, England, United Kingdom Hybrid / WFH Options
Hays Specialist Recruitment Limited
I am currently working with a London-based financial services client who is actively seeking a Java/Kotlin developer to join a market-leading front office development team. What you'll need to succeed Java and Kotlin development experience within financial services (mandatory) Strong experience with Containerisation tools such as Kubernetes and Docker Good experience with MongoDB More ❯
community. You'll also support hiring, team development, and resourcing, all while staying close to the code. Whether it's leading architectural decisions, exploring the latest in Swift or Kotlin, or helping to scale delivery across multiple teams - you'll bring confidence, clarity, and care to every challenge. What you'll be doing: Lead technical direction across projects, contributing … externally, and contributing to a feedback-driven, inclusive environment Skills and experience you'll bring: Strong technical background in native mobile development, with expertise in Swift and/or Kotlin Confident leading mobile architecture decisions and shaping best practices across teams and projects Experience mentoring others, with a supportive and inclusive leadership style Ability to engage confidently with clients More ❯