Job Responsibilities
- Design, develop, integrate and optimise scalable AI/ML solutions, including LLM-based applications, Retrieval-Augmented Generation (RAG), agentic AI and multimodal AI solutions to address Home Team use cases.
- Handle data pre-processing, engineering and annotation for model training and development.
- Work closely with the software engineers to write production-quality code and deploy AI products powered by AI/ML, RAG and agentic AI for use by Home Team on Cloud Platform (GCC) or on-prem infrastructure.
- Design and implement model evaluation, monitoring and optimise performance of in-house developed AI solutions through pre-training and post-training techniques.
- Optimise model inference performance and resource utilisation.
- Develop and deploy risk mitigation measures such as guardrails to ensure safe and responsible use of AI products, aligning with organisational standards and regulatory requirements.
- Work closely with Product Management team to translate product requirements into machine learning / deep learning model requirements.
- Provide technical advisory and review related technical articles to support key business decision and project decision making.
- Troubleshoot complex production AI issues and implement improvements to enhance system reliability and operational performance.
- Keep abreast of new AI technologies development and continuously improve HTxAI’s AI engineering capability.
Learn and share knowledge in a multi-disciplinary team both internally and externally.
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Requirements
Job Requirements
- Postgraduate / Tertiary qualification in any of the following fields: Computer Science, Computer Engineering, Data Science, Data Analytics, Machine Learning, or any relevant areas.
- Min. 6 years of software engineering and AI engineering experience, including at least 3 years developing and deploying production AI applications.
- Strong proficiency in Python with extensive experience developing production-quality software.
- Strong hands-on experience designing, developing, deploying and maintaining production AI/ML solutions.
- Strong experience with open-source AI frameworks such as LangChain / LangGraph, and open models such as Llama 4 and GPT OSS.
- Extensive experience in building scalable AI applications and deploy applications using Docker containers with REST APIs.
- Experience deploying AI application using Kubernetes.
- Experience with vector databases and model serving frameworks.
- Able to work collaboratively with cross-functional teams multi-disciplinary / multi-agencies teams.
- Able to communicate technical concepts and conduct demos in a clear and effective manner to stakeholders of varying technical backgrounds.
- Knowledge of emerging AI-related technologies and trends.
- Self-motivated, team player, creative with excellent communication skills, excellent interpersonal skills and ability to work independently.
Having domain knowledge in Homeland Security sector will be an added advantage.
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What We Offer
- 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.
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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.
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.