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Kotlin Engineer

  • Almaty
  • Astana
  • Belgrade
  • Cluj-Napoca
  • Krakow
  • Larnaca
  • Lodz
  • Lublin
  • Remote.Bulgaria
  • Remote.Kazakhstan
  • Remote.Poland
  • Riga
  • Sofia
  • Varna
  • Warsaw
  • Wroclaw
Hot vacancySmall team (1-10 people)

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Client

Our client, a UK-based digital bank, delivers innovative and accessible financial solutions for today's consumers. Known for its user-friendly platform and customer-centered approach, it helps people manage finances with ease and transparency. Recent expansions into flexible payment options and new services strengthen its role as a leader in the UK's digital banking sector.

Join a great company, not merely an individual project

Position overview

The client is building the bank of the future with cutting-edge technologies. Backend Java/Kotlin engineers work in small, agile, cross-functional teams that tackle real-world problems and interact closely with stakeholders and key business users. They design, develop, and maintain high-quality backend services using Kotlin.

This position includes a sign-in bonus.

The working schedule is aligned with the UK time zone (9 am to 5:30 pm UK time) and involves participating in on-call shifts if required.

Responsibilities

  • Design, develop, and maintain high-quality backend services using Kotlin under established patterns.
  • Work closely with cross-functional teams to define, design, and ship new features using coroutines and existing frameworks.
  • Write meaningful unit and integration tests for your own features, within test boundaries and following existing testing patterns (JUnit, Kotest).
  • Participate constructively in code reviews; provide feedback on assigned PRs.
  • Participate in the full software development lifecycle, from concept and design to testing and deployment; support release and monitoring processes.
  • Engage in continuous improvement practices and agile methodologies; contribute to decisions within the squad.
  • Embrace effective agentic coding practices and actively leverage AI tools such as Claude Code and Copilot.

Requirements

  • Confident in writing production Kotlin code and implementing features using coroutines within established frameworks.
  • Experience working on commercial, established products used by real customers, and operating software in production.
  • Knowledge of unit and integration testing with JUnit or Kotest.
  • Backgrounds where quality, testing, and maintainability were prioritised alongside delivery, even under time or commercial pressure.
  • Experience implementing features within an existing microservices architecture, understanding service boundaries and following established design principles.
  • Ability to write performant SQL queries and understanding of indexing basics.
  • Familiarity with Git branching strategies and participation in code review workflows.
  • Basic experience with building and running services using existing Docker and Kubernetes configurations; a basic understanding of how deployments are structured.
  • Openness to using AI coding tools (e.g. Claude Code, Copilot) to support delivery.
  • Strong command of English in both oral and written communication; ability to participate in team discussions.
  • Structured problem-solving skills; proactivity in resolving assigned tasks and raising risks and blockers early.
  • Effective team player with experience working as part of a team of engineers, with shared ownership, regular feedback, and exposure to different perspectives.
  • Ability to work independently on assigned tasks.
  • Ability to participate in team discussions and contribute to decisions within the team.

Nice to have

  • Familiarity with Kafka.
  • AWS Experience.
  • Understanding event-driven patterns and async messaging (pub/sub, message queues); experience consuming or producing messages in at least one messaging platform.
  • Openness to define and optimize test and deployment pipelines.
  • time spent working across multiple teams, products, or problem spaces, helping to build adaptability
  • evidence of evolving practices, responsibilities, or environments over time rather than working in one project
  • experience in organisations where engineers were embedded in teams, accountable for outcomes, and closely aligned with product and delivery goals.

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We offer

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Vacation

As per the laws of your country. We do ask you to take a proper rest

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Health insurance

We help you to take out an insurance policy for you and your loved ones

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Sick pay

10 days without a doctor's note, afterwards - as per the laws of your country

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Time off for state holidays

According to the official calendar, regardless of the client’s schedule

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Pleasant environment

Two large corporate parties and many small get-togethers for colleagues

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Comfort service

Solving technical and everyday problems at work

The benefits package may vary depending on the region and the type of contract
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FAQ for Candidates

Work on global projects, grow your career in a supportive, flexible, and innovative tech environment. We help cover the cost of IT certifications and provide access to top-tier courses and learning platforms. View current openings and take the next step with us.

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