Senior Java Backend Developer

encora technologies pte. ltd.; Singapore; On-site; SGD 120,000 - 170,000; Full time

Job summary

encora technologies pte. ltd. is seeking a Java Backend Developer to join a payments-focused engineering team in Singapore. The role emphasizes building enterprise-grade back-end services, REST APIs, and scalable microservices on Java/Spring Boot in a secure, highly available environment.

The ideal candidate will have hands‑on experience with financial services, payment processing, cloud migration, and Linux/Windows deployments, along with scripting in Python or Korn shell to automate operations.

Qualifications

• Strong hands-on experience developing enterprise backend applications using Java.
• Experience building scalable, reliable, and maintainable backend services.
• REST APIs, microservices development with Spring Boot.
• Experience with payment platforms, gateways and processing systems.

Skills

Java Backend Development

Spring Boot Framework

Financial Services Experience

Payment Systems / Transaction Handling

International Payment Schemes

Backend API Development & Integration

Linux Server Environment

Windows OS Environment

AWS Cloud Exposure

Python Scripting

Korn Shell Scripting

PostgreSQL Database

Payment Security & Compliance

System Migration & Modernisation

Software Development Lifecycle (SDLC)

Technical Documentation

Stakeholder Collaboration

Job description

Candidate should have strong hands‑on experience in Java Backend Development (Java + Spring Boot) with exposure to financial services, banking, payments, or transaction processing platforms.

This role requires candidates who are comfortable working on enterprise‑grade backend applications, supporting secure and highly available systems, and contributing to system enhancements, integrations, and modernization initiatives.

Relevant payment-related platforms is required ( any).

• International payment transactions
• Payment gateway integrations
• Card payment ecosystems (Visa, Mastercard, Amex, UPI)
• Backend services supporting payment processing
• Migration initiatives towards modern platforms and cloud environments

Mandatory Skills

• Java Backend Development – Strong hands‑on experience developing enterprise backend applications using Java. Candidate should have experience building scalable, reliable, and maintainable backend services.
• Spring Boot Framework – Strong experience developing REST APIs, microservices, backend services, and enterprise applications using Spring Boot.
• Financial Services Experience – Experience working within Banking, Payments, Insurance, FinTech, or other regulated financial environments. Candidate should understand enterprise systems requiring security, stability, and high transaction volumes.
• Payment Systems / Transaction Processing – Experience supporting payment platforms, payment gateways, payment processing systems, switching platforms, or financial transaction applications.
• International Payment Schemes – Exposure to payment ecosystems involving Visa, Mastercard, Amex, UPI, or similar card/payment networks.
• Backend API Development & Integration – Experience developing and integrating backend APIs, REST services, and enterprise system integrations with internal/external platforms.
• Linux Server Environment – Strong experience developing, deploying, troubleshooting, and supporting applications running on Linux environments (RHEL preferred).
• Windows OS Environment – Experience supporting enterprise applications deployed or integrated within Windows environments.
• AWS Cloud Exposure – Experience working with AWS Cloud environments, including application deployment, migration, monitoring, or cloud‑based development activities. Cloud migration experience is an advantage.
• Python Scripting – Experience using Python scripting for automation, operational support, integration, or application enhancement activities.
• Korn Shell Scripting – Experience writing and maintaining shell scripts in Linux environments for automation and operational activities.
• PostgreSQL Database – Experience working with PostgreSQL including SQL development, backend integration, query optimization, and database troubleshooting.
• Payment Security & Compliance – Understanding of PCI‑DSS standards, payment security controls, and card industry requirements.
• System Migration & Modernisation – Experience supporting application migration, platform upgrades, or modernization initiatives from legacy environments to newer platforms/cloud.
• Software Development Lifecycle (SDLC) – Experience contributing across requirement analysis, technical design, development, testing, deployment, and production support activities.
• Technical Documentation – Ability to prepare technical documentation including solution designs, integration flows, technical specifications, and support documentation.
• Stakeholder Collaboration – Ability to work with technical leads, QA teams, business users, vendors, banks, and external partners.