Backend Engineer

COMBUILDER PTE LTD; Singapore; On-site; SGD 80,000 - 120,000; Full time

Job summary

COMBUILDER PTE LTD is seeking a Backend Engineer to design, develop, and maintain scalable backend services powering digital products in a cloud-native, agile environment.

You will collaborate with BA/PM, QA, and DevOps, implement TDD and CI/CD, ensure security and observability, and contribute to blockchain efforts where applicable. Candidates with CS/Engineering degrees preferred.

Qualifications

• Degree in CS/Engineering/IT or related field.
• Experience with Git and branching workflows (GitFlow, trunk-based).
• Proficiency in Shell Scripting, Java, Python, Go, Node.js.
• Experience with cloud platforms (AWS, Azure, Google Cloud).
• Familiarity with microservices and event-driven patterns (Kafka, RabbitMQ).
• Hands-on with Docker and Kubernetes.
• Experience with CI/CD pipelines (GitHub Actions, GitLab CI).
• Knowledge of databases (PostgreSQL, MySQL, MongoDB, DynamoDB, Redis).
• Experience with observability tools (Prometheus, OpenTelemetry, Grafana, ELK).
• Experience with IaC tools (Terraform, CloudFormation).
• Swagger for API documentation.

Responsibilities

• Collaborate with BA and PM to refine user stories into technical requirements.
• Work with QA to ensure automated test coverage and fix defects.
• Partner with DevOps to automate build, deploy, and monitoring pipelines.
• Develop and maintain scalable, high-performance APIs and backend services.
• Implement TDD, pair programming, and CI/CD practices.
• Conduct code reviews and enforce security practices.
• Design and document system architecture meeting security standards.
• Communicate ideas effectively to stakeholders.
• End-to-end work with product teams to build products.
• Prioritize tasks to meet deadlines.

Skills

Backend development

Cloud-native architecture

DevOps practices

TDD & pair programming

API design

Security best practices

Communication skills

Independent worker

Education

Bachelor's/Diploma in Computer Science, Engineering or IT

Tools

Git

GitFlow

Docker

Kubernetes

AWS

Azure

Google Cloud

Kafka

RabbitMQ

PostgreSQL

MySQL

MongoDB

DynamoDB

Redis

Prometheus

OpenTelemetry

Grafana

ELK stack

Terraform

CloudFormation

Swagger

CI/CD tools

Job description

Responsibility

The Backend Engineer is responsible for designing, developing, and maintaining scalable and secure backend services that power digital products. The role requires expertise in software engineering principles, modern development practices, and cloud-native architecture. Engineers must work in an agile, DevOps-driven environment, ensuring high software quality, reliability, and security.

• Collaborate with Business Analysts (BA) and Product Managers to refine user stories and translate them into technical requirements.
• Work with Quality Assurance (QA) engineers to ensure automated test coverage and proactively fix bugs and defects.
• Partner with DevOps teams to automate build, deployment, and monitoring pipelines.
• Develop and maintain scalable, high-performance APIs and backend services in a cloud-native environment.
• Implement modern software development practices, including TDD, pair programming, and CI/CD.
• Conduct code reviews, enforce security best practices, and ensure software craftsmanship standards.
• Design and document system architecture, ensuring compliance with government security and regulatory standards.
• Excellent written and verbal communication skills to pitch ideas and influence stakeholders.
• End to end experience working with product team to build products.
• Ability to work effectively and independently under pressure and prioritize effectively to meet tight deadlines.
• Computer science, product management related degrees or diplomas are a plus.
• Optimize and improve backend systems for scalability, observability, and reliability.
• Where applicable, contribute to blockchain and smart contract development.

Experience and Skills Needed

Technical Skills:

• Degree or Diploma in Computer Science, Computer or Electronics Engineering, Information Technology, or related disciplines.
• Experience with Git and modern branching workflows (GitFlow, trunk-based development).
• Proficiency in modern backend programming languages such as: Shell Scripting, Java, Python, Golang, Node.js.
• Experience with cloud platforms (AWS, Azure, Google Cloud).
• Familiarity with microservices architecture and event-driven patterns is a plus (Kafka, RabbitMQ).
• Hands-on experience with containerization and orchestration tools (Docker, Kubernetes).
• Experience with CI/CD pipelines (ex. GitHub Actions, GitLab CI,).
• Knowledge of database technologies (ex. PostgreSQL, MySQL, MongoDB, DynamoDB, Redis).
• Experience with observability tools (Prometheus, OpenTelemetry, Grafana, ELK stack).
• Experience with Infrastructure as Code (IaC) tools (Terraform, CloudFormation).
• Experience with API documentation tools such as Swagger.

Software Engineering Practices:

• Experience working in Agile Software Delivery Lifecycle and Practices (ex: Scrum, Kanban) with strong collaboration skills.
• Knowledge of Extreme Programming (XP) practices such as TDD, pair programming, continuous refactoring.
• Strong understanding of test automation frameworks (example: JUnit, PyTest ).
• Adherence to software craftsmanship principles, ensuring clean, maintainable, and efficient code.

Good to have:

• Experience working with government digital services and authentication mechanisms (SingPass, CorpPass).
• Experience with API gateways and service meshes (Kong, Istio, Apigee).
• Experience with serverless computing (AWS Lambda, Azure Functions).