Lead Software Engineer (C++ |C#)(DSC|SN)

ST ENGINEERING INFO-SECURITY PTE. LTD; Singapore; On-site; SGD 120,000 - 160,000; Full time

Job summary

A leading cybersecurity firm in Singapore seeks a Lead Software Engineer to lead the architecture and development of secure enterprise applications. This role involves defining software architecture, mentoring engineering teams, and working with cryptographic solutions. The ideal candidate has a minimum of 10 years of experience in C++ and C#, and proven success in delivering secure Windows applications. The position offers opportunities to drive innovation and influence strategic decisions within a collaborative team environment.

Benefits

Continuous learning opportunities

Collaborative team environment

Qualifications

• Minimum 10 years of professional experience in C++ and C# development, with 5 years in a leadership or architecture role.
• Proven track record in designing secure Windows applications and Outlook plugins.
• Expertise in cryptographic algorithms and secure software design principles.

Responsibilities

• Define software architecture for mission-critical applications and plugins, ensuring security and scalability.
• Lead design and implementation of cryptographic solutions and enforce compliance.
• Mentor engineering teams in secure coding best practices.

Skills

C++ development

C# development

Leadership

Cryptographic algorithms

Visual Studio

Git

CI/CD systems

Problem-solving

Communication

Tools

Visual Studio

Git

Job description

Company description

Singapore Technologies Engineering Ltd

Job description

ST Engineering is a global technology, defence and engineering group with offices across Asia, Europe, the Middle East and the U.S., serving customers in more than 100 countries. The Group uses technology and innovation to solve real‑world problems and improve lives through its diverse portfolio of businesses across the aerospace, smart city, defence and public security segments. Headquartered in Singapore, ST Engineering ranks among the largest companies listed on the Singapore Exchange.

Join our Cyber Team

We are an industry leader in cybersecurity with over two decades of experience, we deliver a holistic suite of trusted cybersecurity solutions to empower cyber resilience for government and ministries, critical infrastructure, and commercial enterprises. Backed by our indigenous capabilities and deep domain expertise, we offer robust cyber‑secure products and services in cryptography, cybersecurity engineering, digital authentication, SCADA protection, audit and compliance. We specialise in the design and build of security operations centres for cybersecurity professionals and provide managed security services to strengthen the cybersecurity posture of our government and enterprise customers.

Job Overview

As a Lead Software Engineer, you will lead the architecture, design, and development of highly secure enterprise‑grade applications and Outlook plugins with advanced cryptographic functionalities. You will serve as a technical authority, guiding engineering teams and influencing strategic decisions to ensure robust, scalable, and secure solutions. This role requires deep technical expertise, leadership skills, and the ability to drive innovation across complex systems.

Key Responsibilities

• Define and own the software architecture for mission‑critical applications and plugins, ensuring security, scalability, and maintainability.
• Lead the design and implementation of advanced cryptographic solutions (AES, RSA, ECC, PKCS#11) and enforce compliance with industry standards.
• Mentor and coach engineering teams, fostering best practices in secure coding, performance optimisation, and software quality.
• Collaborate with product managers, security experts and stakeholders to translate business requirements into technical strategies.
• Conduct architecture reviews, code audits and risk assessments to maintain high security and reliability standards.
• Drive innovation by evaluating emerging technologies and integrating them into the product roadmap.
• Oversee source control strategies, CI/CD pipelines, and ensure robust versioning and backup processes.
• Represent the engineering team in customer and executive‑level discussions, providing technical insights and recommendations.
• Prepare and maintain comprehensive technical documentation for architecture and design decisions.

Required Qualifications

• Minimum 10 years of professional experience in C++ and C# development, with at least 5 years in a technical leadership or architecture role.
• Proven track record in designing and delivering secure Windows‑based applications and Outlook plugins.
• Expertise in cryptographic algorithms, protocols and secure software design principles.
• Strong proficiency with development tools (Visual Studio, Git), CI/CD systems and debugging techniques.
• Exceptional problem‑solving skills and ability to make high‑impact technical decisions.
• Excellent communication and leadership skills, capable of influencing cross‑functional teams and stakeholders.

Preferred Qualifications

• Experience with enterprise security frameworks and compliance standards (e.g., FIPS, GDPR).
• Familiarity with Agile/Scrum methodologies and DevSecOps practices.
• Contributions to open‑source projects or published technical papers in security or software architecture.

Work location

Jurong East

Find out more

https://www.stengg.com/cybersecurity

Company culture

ST Engineering believes in fostering a culture where team members are encouraged to overcome challenges, explore new ideas and work together to succeed. We value individuals who are determined to push beyond the boundaries, and have a thirst for knowledge, continuous learning and self‑improvement.