Backend Engineer

Mox Bank; Hong Kong; On-site; HKD 900,000 - 1,300,000; Full time

Job summary

Mox Bank is building a virtual bank from scratch and seeks a skilled backend engineer to join a fast-growing team in Hong Kong. You will contribute to greenfield development, implement RESTful APIs and microservices, and ship software using TDD and CI/CD pipelines.

The role focuses on Kotlin/Java, cloud-native architecture, and scalable data services with PostgreSQL, Aurora, S3, and AWS infrastructure. Collaboration and rapid delivery are essential in this environment.

Qualifications

• Preferably fluent with Kotlin and/or Java.
• Solid experience in back-end development and CI/CD processes.
• Ideally experienced with AWS development environment.
• Quick learner with an ambitious and results driven personality.
• Work well as part of a team in a fast-paced environment.
• Excellent communication and organisational skills.

Responsibilities

• Greenfield development and the continuous improvement of our existing systems.
• Develop RESTful APIs and event driven microservices using Kafka.
• Use Kubernetes and Docker to schedule and run microservices.
• Write high quality, maintainable code using TDD.
• Our technology stack is predominantly Kotlin / Java, but our architecture allows for using the most appropriate language to solve a given problem.
• PostgreSQL, Aurora and S3 for persistence.
• Leverage our elastic AWS infrastructure.
• Practice continuous integration and delivery.
• You build it, you run it

Skills

Kotlin

Java

Back-end development

CI/CD

AWS

Teamwork

Communication

Tools

Kubernetes

Docker

PostgreSQL

Kafka

Aurora

S3

Job description

Application Deadline: 25 August 2026

Department: Technology-CIO

Location: Hong Kong (SAR)

About Mox

Mox is built by and for the ones who aspire to live life to the fullest – we call them Generation Mox! The name Mox reflects the endless opportunities we can create, - Mobile eXperience; Money eXperience; Money X (multiplier), eXponential growth, eXploration… it’s all up for us to define together.

Why Mox

Everything at Mox – from our products, features, to rewards – is designed based on customer research, tailor made for your needs. We care about what customers care about, especially in data security and privacy. Data ethics is core to everyone here at Mox. Mox rewards you with an array of banking and lifestyle benefits. Who says banking can’t be fun?

Who are we looking for?

Join us in building a virtual bank from scratch using cloud native technologies. We're a fast-growing team solving exciting problems and delivering high quality products in small, interdisciplinary teams.

Responsibilities

• Greenfield development and the continuous improvement of our existing systems.
• Develop RESTful APIs and event driven microservices using Kafka.
• Use Kubernetes and Docker to schedule and run microservices.
• Write high quality, maintainable code using TDD.
• Our technology stack is predominantly Kotlin / Java, but our architecture allows for using the most appropriate language to solve a given problem.
• PostgreSQL, Aurora and S3 for persistence.
• Leverage our elastic AWS infrastructure.
• Practice continuous integration and delivery.
• You build it, you run it

Requirements

• Preferably fluent with Kotlin and/or Java.
• Solid experience in back-end development and CI/CD processes.
• Ideally experienced with AWS development environment.
• Quick learner with an ambitious and results driven personality.
• Work well as part of a team in a fast-paced environment.
• Excellent communication and organisational skills

All personal data provided by applicants will be used for recruitment and other employment-related purposes only. Personal data of unsuccessful applicants will be erased within 24 months of rejection of the applicant’s application.