Software Architect

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 – Position Overview

We are looking for an experienced and forward-thinking Software Architect to define, lead, and evolve the architectural strategy of complex, enterprise-grade applications. You will be instrumental in ensuring the scalability, security, performance, and maintainability of our software solutions, while also guiding development teams and influencing technology direction.

This role requires a strong mix of hands-on technical leadership, architectural design, and cross-functional collaboration.

Be Part of Our Success

Architectural Leadership

• Lead end-to-end solution design — from requirement analysis to system architecture, integration, and delivery alignment.
• Develop architecture blueprints, high-level design, and technology stack recommendations that balance scalability, security, and cost efficiency.
• Collaborate with business and delivery teams to translate functional needs into technical solutions.
• Present solution architectures and technical proposals to internal stakeholders and customers.

Standards & Best Practices

• Define and maintain Codex's software architecture standards, reusable components, and development guidelines.
• Promote modern engineering approaches (Agile, DevSecOps, Cloud-Native, and Microservices).
• Ensure architecture consistency across projects through reviews and technical governance.

Engineering Leadership & Delivery Enablement

• Partner with engineering leads to ensure delivery teams adhere to approved architectural patterns.
• Provide technical guidance during build and deployment phases (e.g., integration, performance, and security).
• Participate in design and code reviews for critical systems.

Security, Compliance & Quality

• Embed cybersecurity considerations and compliance standards into architectural design.
• Champion resilience, observability, and performance engineering as part of solution quality.

Innovation & Modernization

• Evaluate and introduce emerging technologies relevant to Codex's product roadmap (AI/ML, data streaming, automation, low-code, etc.).
• Support R&D initiatives led by the CTO to drive future-ready capabilities.
• Contribute to defining and operationalizing product or platform modernization strategies.

Mentorship & Technical Oversight

• Mentor engineers and technical leads to raise architectural competency across teams.
• Contribute to internal knowledge sharing and architecture community initiatives.

Solutioning Support

• Support pre-engagement and tender activities by developing solution proposals, architecture decks, and effort estimations.
• Collaborate with bid teams to align proposed solutions with Codex's technology direction.
• Participate in client workshops to validate design assumptions and ensure solution alignment.

Qualities We Value

• Bachelor's or Master's degree in Software Engineering, Computer Science, or a related field.
• 8+ years of experience in software design and architectural experience, with exposure to solutioning or pre-sales architecture.
• Experience in public sector or mission-critical domains is a plus.
• Strong understanding of Agile, DevOps, and CI/CD practices with practical experience integrating software quality, automation, and cloud infrastructure.
• Proven experience with software performance tuning, scalability, security compliance, and resilience engineering.
• Solid foundation in API design, microservices, event-driven architecture, and cloud platforms (AWS, Azure, or GCP).
• Demonstrated ability to lead cross-functional technical teams and manage complex stakeholder expectations.
• Strong communication and documentation skills for both technical and non-technical audiences.