Assistant Principal Engineer (Software)

Business Area: Commercial Aerospace

Department: Smart Analytics, Innovation & Sustainability

Work Location: 600 West Camp Road

About the role

Role Overview

We are seeking an Assistant Principal Software Engineer to join our team, responsible for designing, developing, and delivering robust, scalable software solutions that support real‑world business and operational needs. This role is hands‑on and delivery‑focused, combining strong engineering fundamentals with modern development practices, including AI‑assisted code generation and peer code review. You will work closely with both business and technical stakeholders to translate requirements into high‑quality, production‑ready systems.

Key Responsibilities

• Design, develop, and maintain enterprise‑grade applications deployed on Amazon Web Services (AWS).
• Build and enhance full‑stack software solutions using .NET, Blazor, Python, and PostgreSQL.
• Apply strong problem‑solving skills to analyse requirements and implement practical, maintainable solutions.
• Leverage AI‑assisted code generation tools to improve development efficiency and code quality.
• Conduct code reviews to ensure adherence to coding standards, architectural principles, and best practices.
• Collaborate with business stakeholders to clarify functional requirements and solution intent.
• Work with technical teams and platform services to deploy, operate, and support applications in AWS production environments.
• Contribute to continuous improvement of engineering practices, tooling, and code quality standards.

Required Qualifications & Experience

• 5+ years of professional software engineering experience delivering production systems.
• Strong hands‑on experience with .NET (Core), Blazor, and Python.
• Experience working with PostgreSQL or similar relational databases.
• Hands‑on experience deploying and operating applications in Amazon Web Services (AWS).
• Solid understanding of software engineering fundamentals, including application architecture, APIs, microservices and design patterns.
• Familiarity with DevOps tools and practices (e.g. Git, CI/CD pipelines, containerization)
• Proven ability to debug, troubleshoot, and resolve issues in production systems.

Preferred/Advantageous Skills & Experience

• Experience with AWS Solution Architecture, including designing end‑to‑end cloud architectures that are scalable, secure, reliable, and cost‑efficient
• Prior exposure to AWS Well‑Architected Framework and architectural best practices
• Experience with Infrastructure as Code (e.g. CloudFormation, Terraform, CDK)
• Familiarity with software observability, logging, and monitoring in cloud environments

Soft Skills & Attributes

• Strong analytical and problem‑solving skills.
• Strong sense of ownership and accountability.
• Detail‑oriented with a strong focus on reliability, data quality, and security.
• Comfortable working in a project‑based, fast‑paced environment.
• Able to work independently while collaborating effectively across teams.

About Company

ST Engineering is a global technology, defence and engineering group with a diverse portfolio of businesses across the aerospace, smart city, defence and public security segments. The Group harnesses technology and innovation to solve real-world problems, enabling a more secure and sustainable world. Headquartered in Singapore, it has operations spanning Asia, Europe, the Middle East and the U.S., serving customers in more than 100 countries. ST Engineering reported revenue of over $12b in 2025 and ranks among the largest companies listed on the Singapore Exchange. It is a component stock of MSCI Singapore, FTSE Straits Times Index and Dow Jones Best-in-Class Asia Pacific Index.

About Commercial Aerospace

ST Engineering's Commercial Aerospace business is a world-class Original Equipment Manufacturer (OEM) and Maintenance, Repair and Overhaul (MRO) service provider with proven solutions for practically every stage of an aircraft life cycle. With 50 years of reputable track record in aviation, backed by a highly experienced team of engineers and technicians across facilities in Asia Pacific, the U.S. and Europe, we know what it takes to keep the world flying safely.