Backend Engineer (Contract Basis)

📌 EMPLOYMENT DETAILS

• Employment type: through 3rd party/ vendor
• Duration: 24 months fixed term (subject to change based on business needs)
• Work setup: Full onsite with dedicated full office hours based in BSD, Tangerang.

The Role

Senior

• Lead the design and development of scalable, secure, and high-performance backend systems and RESTful APIs using Golang, Java Spring Boot, or Python.
• Strategize backend architecture decisions, including microservices design, data modeling, and system integration patterns.
• Authorize technical standards for API development, database management, and service reliability across the engineering team.
• Plan and evaluate CI/CD pipeline improvements, containerization strategies (Docker & Kubernetes), and cloud infrastructure on AWS/GCP.
• Lead code reviews, establish engineering best practices, and drive a culture of quality and ownership.
• Formulate data management strategies across SQL/NoSQL databases (PostgreSQL, MySQL, Oracle, MongoDB, Redis) including caching and performance tuning.
• Recommend and evaluate emerging backend technologies, frameworks, and patterns to continuously improve system capabilities.
• Control system reliability, availability, and security posture through proactive monitoring, incident management, and root cause analysis.
• Synergize across Product, Frontend, DevOps, and QA teams to align technical delivery with business goals.
• Use AI-assisted development tools thoughtfully to improve backend delivery, test coverage, debugging, and documentation without compromising quality or security.
• Mentor mid and junior engineers, fostering technical growth and engineering culture within the team.
• Evaluate and manage technical debt, dependency lifecycle, and long-term platform scalability.

Mid

• Develop and maintain backend services and RESTful APIs using Golang, Java Spring Boot, or Python, with a focus on scalability and performance.
• Implement and manage SQL/NoSQL database schemas (PostgreSQL, MySQL, Oracle, MongoDB, Redis) and apply caching strategies.
• Build and maintain microservices following established architecture patterns and engineering standards.
• Collaborate with Product Managers, Frontend Engineers, and QA to deliver end-to-end features and seamless integrations.
• Plan and contribute to CI/CD pipelines and containerized deployments using Docker & Kubernetes.
• Write clean, testable, and well-documented code in alignment with team coding standards.
• Participate in code reviews and recommend improvements to development processes.
• Use AI-assisted coding tools where appropriate for implementation, debugging, tests, and documentation, validating all output through established engineering practices.
• Troubleshoot and resolve backend performance issues, API failures, and database bottlenecks.
• Evaluate and implement caching, queuing, and optimization techniques under team guidance.
• Maintain technical documentation for services, APIs, and system components.
• Stay current with backend ecosystem trends and contribute learnings to the team.

Requirements

Senior

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
• 5+ years of professional backend development experience with a proven record of building high-traffic, mission-critical systems.
• Deep expertise in Golang, Java Spring Boot, or Python; proficiency in more than one language is a strong advantage.
• Proven track record architecting and leading microservices-based backend systems at scale.
• Strong command of RESTful API design principles, including versioning, security, and performance.
• Expert-level experience with databases: PostgreSQL, MySQL, Oracle, MongoDB, Redis — including query optimization and schema design.
• Solid experience with cloud platforms (AWS or GCP) and containerization tools (Docker, Kubernetes).
• Expertise in CI/CD pipelines, automated testing, and deployment best practices.
• Familiarity with AI-assisted coding tools such as Cursor, GitHub Copilot, Claude Code, OpenAI Codex, or similar, with the judgment to review and test generated output.
• Strong understanding of system reliability, observability, and security practices.
• Experience leading code reviews and setting engineering standards for a team.
• Excellent communication, stakeholder management, and cross-functional collaboration skills.
• Prior experience in high-traffic, mission-critical production environments is required.

Mid

• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
• 2–4 years of professional backend development experience with at least one production system shipped.
• Working proficiency in Golang, Java Spring Boot, or Python.
• Hands-on experience with RESTful API development and basic microservices concepts.
• Solid experience with relational and/or NoSQL databases (PostgreSQL, MySQL, Oracle, MongoDB, Redis).
• Familiarity with cloud platforms (AWS or GCP) and containerization basics (Docker, Kubernetes).
• Experience with Git and collaborative development workflows (code reviews, branching strategies).
• Familiarity with AI-assisted coding tools for development, testing, debugging, or documentation is an advantage.
• Understanding of CI/CD concepts and deployment pipelines.
• Basic knowledge of caching strategies, queuing systems, and performance considerations.
• Strong problem-solving skills, attention to detail, and eagerness to learn.
• Good communication skills and ability to thrive in a collaborative, agile environment.
• Prior exposure to high-traffic systems is an advantage