Backend Developer

Position 3: Senior Backend Developer

Key responsibilities include developing bi-directional sync microservices, building and testing REST API endpoints, integrating with upstream and downstream systems, participating in code reviews and unit/integration testing, and maintaining technical documentation.

Requirements:
Minimum 3 years of experience in backend development

Strong proficiency in Java or C# and RESTful API development

Experience with microservices architecture and integration patterns

Familiarity with Git-based version control and Agile/Scrum practices

Track 3 – PTMS Backend Jobs

This track involves the sequential rewrite of approximately 49 legacy batch scripts across CGS, Communications, Reports, and Processing modules into a modern framework. The vendor developer will work closely with the internal PTMS team to ensure functional parity and integration with the modernised application.

Position 4: Backend Developer – Batch Jobs Rewrite

Key responsibilities include analysing and reverse-engineering existing legacy batch scripts to understand processing logic and dependencies, sequentially rewriting batch jobs across CGS, Communications, Reports, and Processing modules into a modern framework, ensuring functional parity between legacy and rewritten jobs, implementing unit and regression tests for each rewritten batch job, and supporting integration with the modernised PTMS application.

Requirements:
Minimum 3 years of experience in backend development

Experience with batch job frameworks and scheduled processing systems

Ability to analyse and reverse-engineer legacy scripts

Proficiency in Java, C#, or equivalent modern backend language

Experience with unit and regression testing for batch workloads

Track 4 – CGS & VIS Application Modernisation

This track covers the sequential modernisation of two applications — VIS (approximately November 2026 to March 2027) followed by CGS (approximately April 2027 to October 2027). Vendor developers will work with internal product managers to convert legacy JSP-based UIs to React Native and rebuild backend services using Spring Boot.

Position 6: Backend Developer

Key responsibilities include building Spring Boot backend services for both VIS and CGS applications, implementing business logic aligned with domain and product requirements, supporting API integration with the modernised frontend, and participating in code reviews and testing activities.

Requirements:
Minimum 3 years of experience in backend development

Strong proficiency in Spring Boot and Java

Experience with service layer design and database integration

Familiarity with Agile delivery and code review practices

KopiRecruit

is a KPI-driven recruitment and Employer of Record (EOR) partner that helps B2B SaaS, AdTech, and media companies build high-performing teams across Southeast Asia. We replace the broken, volume-based agency model with a quality-focused approach, delivering carefully vetted talent that drives long-term success. Build your team beyond borders with KopiRecruit.