Junior Java Backend Engineer
- Compensation
- Not disclosed
- Location
- Kuala Lumpur, Malaysia
- Work setup
- Not specified
- Seniority
- Junior
- Employment
- Not specified
- Experience
- 1+ years
- Category
- Backend
- Posted
Skills
Must have
- Bachelor's Degree or above in Computer Science, Software Engineering or a related field.
- 1–3 years of Java backend development experience, preferably in FinTech, financial services or trading systems.
- Strong knowledge of:
- Java concurrency and multithreading
- JVM performance tuning
- Hands-on experience with Spring Cloud / Microservices.
- Strong experience with MySQL / PostgreSQL, including complex SQL optimization, index design and large-table handling.
- Practical experience with Redis, including distributed locks and caching strategies.
- Practical experience with Kafka, including reliability and throughput optimization.
- Good understanding of payment gateway integration, security and callback/webhook processing.
- Strong system ownership, troubleshooting and architectural thinking.
Nice to have
- Experience integrating MT4 / MT5 trading systems.
- Familiarity with CRM systems or customer lifecycle platforms.
- Understanding of trading order lifecycle, settlement and risk control.
- Experience developing marketing, activity, bonus or reward-based systems.
- Knowledge of financial compliance and data security standards.
- Experience mentoring junior engineers or leading backend development teams.
Full description
We are looking for a Mid-Level Java Backend Engineer to take ownership of backend services supporting our financial trading systems and self-developed CRM platform.
You will be responsible for designing and developing CRM systems, MT4/MT5 trading data integrations, payment gateway services, and internal APIs, while ensuring system performance, security, scalability and reliability.
Key Responsibilities
Lead backend design and development for self-developed CRM systems supporting customer lifecycle, trading activities and internal operations.
Design and maintain MT4/MT5 trading system integrations, including:
Account and user data
Trade, order, position and balance data
Real-time and historical data synchronization
Design and develop payment gateway integrations, covering top-up, withdrawals, callbacks/webhooks, reconciliation and exception handling.
Develop internal and external APIs for marketing campaigns, promotions, bonuses, rewards and business projects.
Develop, maintain and optimize Java / Spring Cloud microservices.
Ensure high concurrency, low latency and high availability across trading and CRM platforms.
Optimize backend performance through thread pool/concurrency tuning, JVM and database optimization, caching and asynchronous processing.
Work closely with DevOps, Operations, Risk and Product teams to deliver reliable backend services.
Conduct code reviews, establish development standards and mentor junior engineers.
Troubleshoot production issues and lead system refactoring and performance improvement initiatives.
Requirements
Bachelor's Degree or above in Computer Science, Software Engineering or a related field.
1–3 years of Java backend development experience, preferably in FinTech, financial services or trading systems.
Strong knowledge of:
Java concurrency and multithreading
JVM performance tuning
Hands-on experience with Spring Cloud / Microservices.
Strong experience with MySQL / PostgreSQL, including complex SQL optimization, index design and large-table handling.
Practical experience with Redis, including distributed locks and caching strategies.