Fintech Backend Engineer (Java) — Mandarin, APIs & Microservices

Dada Consultants; Kuala Lumpur; On-site; MYR 380,000 - 570,000; Full time

Job summary

Dada Consultants is hiring a Backend Engineer (Java) to design, build, and maintain core services powering a regulated fintech platform in Singapore. You will own API development, database design, and performance optimisations, while collaborating with frontend teams and ensuring secure, scalable systems.

Ideal candidates bring 3+ years of Java backend experience, strong Spring Boot skills, and fluency in Mandarin to coordinate with Mandarin-speaking stakeholders and business counterparts.

Qualifications

• Minimum 3 years of professional backend experience in Java with hands-on Spring or Spring Boot experience.
• Strong knowledge of relational databases (MySQL / PostgreSQL) including SQL query optimisation.
• Familiarity with microservices and message queue technologies (Kafka or RabbitMQ).
• Experience with multithreading, memory management, and JVM performance fundamentals; unit testing with JUnit/Mockito; Git version control.
• Bachelor's degree or equivalent in CS/Engineering; ability to work independently in a fast-paced environment.
• Experience with Docker and Kubernetes is a plus; exposure to AWS/GCP/Azure advantageous.
• Proficiency in Mandarin is required to communicate with Mandarin-speaking stakeholders.

Responsibilities

• Design, build, and maintain backend services and RESTful APIs in Java (Spring Boot or equivalent).
• Own database schema design and optimized queries across relational and NoSQL stores.
• Ensure performance, scalability, and security through solid architecture and coding practices.
• Write unit, integration, and end-to-end tests; participate in code reviews to maintain quality.
• Collaborate with frontend engineers to define API contracts and document APIs.
• Troubleshoot production issues and diagnose performance bottlenecks and bugs.
• Contribute to CI/CD pipelines and deployment automation for reliable releases.
• Document APIs, services, and key architectural decisions for technical records.

Skills

Java

Spring Boot

RESTful APIs

Microservices

SQL & query optimisation

Multithreading

JUnit/Mockito

Git

Mandarin language

Cloud exposure (AWS/GCP/Azure)

Education

Bachelor's degree in Computer Science/Engineering or equivalent

Tools

Docker

Kubernetes

Kafka

RabbitMQ

MySQL

PostgreSQL

MongoDB

Redis

OAuth2/JWT

Job description

Dada Consultants is hiring a Backend Engineer (Java) to design, build, and maintain core services powering a regulated fintech platform in Singapore. You will own API development, database design, and performance optimisations, while collaborating with frontend teams and ensuring secure, scalable systems.

Ideal candidates bring 3+ years of Java backend experience, strong Spring Boot skills, and fluency in Mandarin to coordinate with Mandarin-speaking stakeholders and business counterparts.