Software Engineer

About Codex Solutions

A joint venture company by ST Engineering and HTX (Home Team Science and Technology Agency), Codex Solutions is set up to be a dynamic and forward-looking technology company established to develop cutting-edge software solutions that support and strengthen Singapore’s homeland security efforts. As a mission-driven organisation, we are focused on building strong in-house capabilities that directly address the complex challenges faced by the Home Team.

With a strong emphasis on innovation, product excellence, and impact at scale, Codex Solutions offers a unique environment where purpose meets technology. We are assembling a diverse and talented team of technologists and problem solvers who are passionate about making a real difference. If you're looking to shape meaningful solutions and be part of something bigger — Codex Solutions is where you’ll want to be.

Together, We Can Make A Significant Impact

As a Software Engineer, you will be part of an agile, cross-functional team that designs and develops mission-critical digital platforms for the public sector. You will work across the full technology stack — creating responsive front-end applications and robust backend services that are reliable, secure, and scalable.

The position offers exposure to a wide range of technologies and opportunities for growth. This is an ideal role for engineers who are passionate about learning, problem-solving, and building impactful solutions.

Be Part of Our Success

• Deliver functional, tested, secure, and scalable software features based on the product backlog and agreed sprint priorities.
• Work in cross-functional Agile teams and contribute to sprint planning, backlog refinement, development, reviews, retrospectives, and continuous improvement.
• Collaborate with QA engineers, Product Designers, DevOps engineers, Business Analysts, Product Owners, and stakeholders to ensure solutions meet both technical and user requirements.
• Clarify requirements where required and translate business or user needs into technical specifications, implementation tasks, and acceptance considerations.
• Develop front-end applications, backend services, APIs, and software modules using the project’s approved technology stack.
• Support development for Proof of Concept (POC) and/or Initial Operations Capability (IOC) initiatives, enabling safe experimentation and incremental delivery.
• Write and maintain unit and integration tests to support automated testing, quality gates, and continuous integration pipelines.
• Design, implement, and maintain CI/CD pipeline templates for automated build, testing, security scanning, and deployment in alignment with the Authority’s toolchain.
• Set up, maintain, and troubleshoot development environments to support productive development, testing, and experimentation.
• Apply DevSecOps practices, Infrastructure as Code (IaC) principles, secure coding standards, and software maintenance best practices where applicable.
• Investigate, troubleshoot, and resolve software defects, technical issues, and post-deployment support matters in a timely manner.
• Participate in code reviews, technical documentation, technical evaluation, benchmarking, and quality assurance activities.
• Work with minimal supervision on assigned modules and, where required, coordinate small tasks or workstreams while contributing to team delivery and technical discussions.

Qualities We Value

• 1-3 years of relevant software development experience is preferred.
• Proficiency in one or more relevant languages or frameworks, such as TypeScript with Angular, React, or Next.js; C#; Java; or other languages depending on project needs.
• Familiarity with one or more database technologies, such as MSSQL, PostgreSQL, or Oracle.
• Good understanding of SDLC practices, object-oriented programming, RESTful API design, microservices concepts, software maintenance, and secure coding practices.
• Familiarity with Agile and Scrum practices, with the ability to work in sprint-based delivery environments.
• Familiarity with DevOps principles, CI/CD pipelines, automated testing, code quality practices, and version control tools such as Git and GitHub or equivalent platforms.
• Knowledge of containerisation and orchestration technologies such as Docker and Kubernetes will be advantageous. Exposure to cloud environments, Infrastructure as Code, or DevSecOps toolchains will be an added advantage.
• Able to apply industry best practices in quality assurance, technical evaluation, and benchmarking, and adapt approaches based on project requirements.
• Strong analytical and problem-solving skills, with the ability to investigate issues, evaluate options, and propose practical technical solutions.
• Able to communicate clearly and collaborate effectively within cross-functional teams and with stakeholders.
• Keen to learn, adaptable, responsible, and comfortable working in a mission-driven environment where quality, security, and impact matter.

Our Commitment That Goes Beyond the Norm

• Opportunity to work on meaningful public sector digital initiatives.
• A supportive, purpose-driven team culture.
• Structured career development and technical upskilling.
• Access to modern tools, cloud technologies, and secure DevSecOps environments.

Additional Information

Shortlisted applicants may be involved in classified or sensitive projects that require handling of restricted information. As such, selected candidates will be required to undergo a security clearance process as part of the employment consideration.