Senior Backend Developer – Java

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Location: Kuala Lumpur, Malaysia
Employment Type: Full-Time / Contract
Experience: 5–8+ years
Nationality: Malaysian Citizens Only

Job Overview

We are looking for a Senior Backend Developer – Java with strong hands‑on experience in designing and developing scalable, secure, and high-performance backend applications.

This is a hands‑on engineering role for a developer who can take ownership of backend architecture, complex business logic, API development, system integration, performance optimisation, and production support.

Key Responsibilities

• Design, develop, and maintain scalable Java backend applications.
• Develop secure and high-performance RESTful APIs and backend services.
• Translate business and functional requirements into robust technical solutions.
• Design and implement reusable backend components and services.
• Develop microservices and distributed backend applications.
• Integrate backend services with internal and third‑party systems.
• Design and optimise database queries, transactions, and data access layers.
• Troubleshoot complex production issues and perform root‑cause analysis.
• Optimise application performance, scalability, and reliability.
• Implement appropriate security controls for backend services and APIs.
• Write unit, integration, and automated tests.
• Participate in code reviews and maintain high coding standards.
• Work closely with Frontend Developers, QA Engineers, Business Analysts, Architects, and DevOps teams.
• Participate in Agile ceremonies, technical discussions, sprint planning, and estimation.
• Support application deployment, release activities, and production issues.
• Mentor junior developers and contribute to technical best practices.

Required Technical Skills

• Bachelor's Degree in Computer Science, Software Engineering, Information Technology, or related field.
• 5–8+ years of professional Java development experience.
• Strong hands‑on experience with:
• Spring Boot
• Spring Framework
• RESTful APIs
• Microservices
• Hibernate / JPA
• Strong understanding of OOP, SOLID principles, design patterns, and clean code.
• Experience with relational databases such as Oracle, PostgreSQL, MySQL, or MS SQL Server.
• Strong SQL and database optimisation skills.
• Experience with Git and modern software development practices.
• Experience with unit testing using JUnit, Mockito, or equivalent.
• Good understanding of API security, authentication, and authorisation.

Tough / Niche Technical Skills

Candidates with experience in the following will be strongly preferred:

• Microservices architecture and distributed systems.
• Kafka, RabbitMQ, or other event‑driven messaging platforms.
• API Gateway and service‑to‑service communication.
• Redis or other caching technologies.
• Docker and Kubernetes.
• CI/CD pipelines and DevOps practices.
• Cloud platforms such as AWS, Azure, or GCP.
• OAuth 2.0 / OpenID Connect.
• Performance tuning and load optimisation.
• High‑availability and fault‑tolerant application design.
• Observability tools such as ELK, Grafana, Prometheus, or OpenTelemetry.
• Experience working with large‑scale enterprise applications.

What We’re Looking For

We are looking for a backend engineer who can go beyond writing Java code — someone who can design services, solve complex technical problems, understand system architecture, optimise performance, and take ownership of backend delivery from development through production.