Senior Software Developer*

ETHOS SEARCH ASSOCIATES PTE. LTD.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

ETHOS SEARCH ASSOCIATES PTE. LTD. is seeking an experienced software engineer for a 1-year contract in One North, Singapore. You will build backend modules, design REST APIs, and contribute to IaC, testing, and documentation to support live systems.

The role requires strong Python production experience, API design skills, and the ability to work in a fast-paced environment with automated pipelines and code reviews.

Qualifications

• At least 5 years building production software with real users and regular releases.

Responsibilities

• Backend feature modules implementation based on written specifications and acceptance criteria.
• Creation of REST API endpoints with validation, authorisation, and error handling.
• Data model changes and migrations for live system deployment.
• Infrastructure-as-code authoring and maintenance.
• Unit and integration tests creation.
• Code review, both as author and reviewer.
• Technical documentation and operational runbooks.
• Frontend work when required.
• Day-to-day technical guidance and code review feedback to junior developers.

Skills

Python

REST APIs

CI/CD

Testing

Infrastructure-as-code

Cloud

Code reviews

Documentation

Frontend work

Git workflows

English technical writing

Tools

AWS CDK

Terraform

CloudFormation

Job description

This will be a 1-year contract position based in One North.

Responsibilities include:

• backend feature modules implementation based on written specifications and acceptance criteria
• creation of REST API endpoints (validation, authorisation, and error handling)
• data model changes and write database migrations for live system deployment
• infrastructure-as-code authoring and maintenance
• unit and integration tests creation
• code review, both as author and reviewer
• technical documentation and operational runbooks
• frontend work where required
• day-to-day technical guidance and code review feedback to junior developers

Requirements:

• At least 5 years building and maintaining production software/applications and services with real users and regular release cycles
• Production experience with Python, building applications using a web framework
• Experience designing and building REST APIs (authentication, authorisation and error handling)
• Experience writing and deploying database schema migrations for live production systems
• Experience in authoring infrastructure-as-code from scratch (AWS CDK, Terraform, CloudFormation or equivalent)
• Experience with commercial cloud
• Experience working within a branching and pull request workflow
• Experience in reviewing others' code
• Current and frequent writing of automated tests
• Able to build or maintain automated CI/CD pipelines
• Accustomed to AI-assisted development tooling as part of a normal workflow
• Strong written technical English for documentation

Advantageous to have:

• Familiarity with data cataloguing, metadata management or data governance tooling
• Experience in workflow orchestration experience
• Hands‑on frontend development with a modern JavaScript framework
• Delivery experience within a public sector environment
• Cloud certification(s)