Senior Backend Engineer - Java/Kotlin Microservices

ConnectedGroup Limited; Hong Kong; On-site; HKD 900,000 - 1,500,000; Full time

Job summary

ConnectedGroup Limited is seeking a Backend Engineer to design, build, and scale backend services powering fintech digital platforms. You will craft microservices, APIs, and event-driven systems with Java/Kotlin, AWS, and Kafka, ensuring secure, reliable production systems.

The role emphasizes collaboration with cross-functional teams, adherence to TDD/CI-CD, and ownership of architecture improvements to deliver end-to-end solutions.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or related discipline.
• Minimum five years of backend development experience.
• Strong hands-on experience with Java and/or Kotlin.
• Solid knowledge of microservices architecture and distributed systems.
• Experience with Apache Kafka and event-driven systems.
• Experience deploying applications using AWS.
• Experience designing and integrating APIs and backend services.
• Familiar with authentication, security, and system integration architecture.
• Exposure to Test-Driven Development, Domain-Driven Design, CI/CD, and modern software practices.
• Experience working in Agile environments.

Responsibilities

• Design, develop, and maintain backend applications using Java and Kotlin.
• Develop and enhance microservices-based architectures for digital platforms and customer-facing applications.
• Build, maintain, and integrate APIs and backend services for seamless communication across applications and external platforms.
• Implement event-driven architectures and messaging solutions using Apache Kafka.
• Develop and deploy cloud-based backend services using AWS technologies.
• Ensure backend systems meet high standards of availability, scalability, reliability, security, and maintainability.
• Apply engineering practices including Test-Driven Development, Domain-Driven Design, and CI/CD.
• Collaborate with frontend engineers, architects, product teams, and other stakeholders to deliver end-to-end technical solutions.
• Participate in system design discussions, code reviews, troubleshooting, and production issue resolution.
• Take ownership of backend components and contribute proactively to architecture improvements and engineering excellence.

Skills

Java

Kotlin

Microservices

APIs

Kafka

AWS

Security

TDD

DDD

CI/CD

Agile

Problem solving

Communication

Education

Bachelor's degree in Computer Science, Information Technology, Software Engineering, or related discipline

Tools

AWS

Kafka

Job description

ConnectedGroup Limited is seeking a Backend Engineer to design, build, and scale backend services powering fintech digital platforms. You will craft microservices, APIs, and event-driven systems with Java/Kotlin, AWS, and Kafka, ensuring secure, reliable production systems.

The role emphasizes collaboration with cross-functional teams, adherence to TDD/CI-CD, and ownership of architecture improvements to deliver end-to-end solutions.