Backend Kotlin Developer (Senior)

Reposted 11 Days Ago
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Admiralty
Senior level
Fintech • Payments • Software • Financial Services
The Role
As a Senior Backend Engineer, you'll design, build, and maintain backend services and APIs, ensuring reliability and scalability while collaborating with other teams.
Summary Generated by Built In

At Kody, we’re redefining how businesses take payments and access financial services. As a fast-growing Fintech, we partner with some of the most recognised names in hospitality, F&B and retail across Hong Kong helping them modernise payments, settlement and digital financial experiences.

Our Hong Kong tech team runs like a startup within a scaling company i.e. agile, innovative and deeply product-driven. We’re now looking for a Senior Backend Engineer to help us build the next generation of payment and settlement infrastructure.

Why Join us?

  • Work with industry-leading brands in Hong Kong and across the region
  • Join a fast-moving, innovative tech culture with the stability of a growing international company
  • Build with modern tools and stacks: Kotlin, Kafka, Kubernetes, Redis, PostgreSQL, and cloud-native frameworks
  • Enjoy flexibility while working with a passionate, highly skilled engineering team
  • Access learning and development and the opportunity to travel for collaboration with our global tech teams

Your Role

As a Senior Backend Engineer, you’ll be at the heart of our platform designing and scaling systems that power Kody’s products, from payment gateways and settlement systems to mobile POS integrations and financial service APIs.

Responsibilities
  • Design, build, and maintain backend services and APIs (REST/gRPC)
  • Contribute to backend architecture and ensure system reliability and scalability
  • Debug, troubleshoot, and optimise performance in production systems
  • Collaborate with product, QA, and frontend teams to deliver robust, maintainable solutions
  • Write clean, efficient, and well-tested code
  • Stay current with modern backend and cloud technologies

Requirements
  • 5+ years of experience in backend software development (Kotlin or Java)
  • Strong understanding of microservices, cloud deployment (AWS/GCP), and CI/CD pipelines (GitHub Actions)
  • Proficiency in SQL/NoSQL databases (PostgreSQL, MySQL, Redis)
  • Familiar with Docker, Kubernetes, and event-driven systems (Kafka)
  • Solid understanding of APIs (REST, gRPC) and version control (GitHub)
  • Familiarity with agile development processes
  • Fluent in English (Mandarin or Cantonese a plus)
  • Fintech, payment, or settlement background is a plus

Benefits
  • Competitive compensation and meaningful work impact
  • Equity available
  • Flexibility and a global, tech-driven culture
  • Career growth opportunities within a fast-scaling fintech
  • Work with ambitious teammates who think big and execute fast

Top Skills

AWS
Ci/Cd
Docker
GCP
Git
Grpc
Kafka
Kotlin
Kubernetes
Postgres
Redis
Rest
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The Company
HQ: London
53 Employees
Year Founded: 2018

What We Do

Kody is on a mission to make in-person payment acceptance easy. Today, paying in person presents common problems for businesses, such as high costs, long queues, and limited choice of payment methods. Kody fully integrates the payment ecosystem. This way, businesses can offer customers more control over their payment choices to make transactions quicker and simpler.

Founded by a small group of final-year high school students and launched in July 2022, 24-year-old founder Yoyo Chang (CEO) studied at the University of Cambridge & York whilst raising US$10M. Today, Kody's platform is growing to connect millions of end-users with venues all over the world.

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