Total 9 computer security job vacancies in Information Technology category in Singapore

ST Engineering is a global technology, defence andengineering group with offices across Asia, Europe, the Middle East and the U.S., serving customers inmore than 100 countries. The Group uses technology and innovation to solvereal-world problems and improve lives through its diverse portfolio ofbusinesses across the aerospace, smart city, defence and public securitysegments. Headquartered in Singapore, ST Engineering ranks amongthe largest companies listed on the Singapore Exchange.

Join our Cyber Team

We are an industryleader in cybersecurity with over two decades of experience, we deliver aholistic suite of trusted cybersecurity solutions to empower cyber resiliencefor government and ministries, critical infrastructure, and commercialenterprises. 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 andcompliance. We specialise in the design and build of security operationscentres for cybersecurity professionals and provide managed security servicesto strengthen the cybersecurity posture of our government and enterprisecustomers.

Job Overview:

As a Senior SoftwareEngineer, you will lead the architecture, design, and development of highlysecure enterprise-grade applications and Outlook plugins with advancedcryptographic functionalities. You will serve as a technical authority, guidingengineering 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 optimization, 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

STEngineering believes in fostering a culture where team members are encouragedto overcome challenges, explore new ideas, and work together to succeed. Wevalue individuals who are determined to push beyond the boundaries, and have athirst for knowledge, continuous learning, and self-improvement.

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.

Responsibilities

•Design and implement CDS components enforcing strict data flow control and security policies across classified/unclassified domains.

• Develop secure communication features across OSI Layers 2–7, including packet filtering, protocol validation, and deep content inspection.

•Architect and maintain secure messaging systems with emphasis on integrity, confidentiality, and controlled data release.

•Deploy and harden CDS services using Docker and Kubernetes/Docker Swarm, with RBAC and secure container lifecycle management.

•Achieve low-latency, high-throughput data transfer while maintaining compliance with security frameworks (e.g., Common Criteria, NIST).

•Implement secure coding practices, encryption (TLS/mTLS), and audit mechanisms aligned with cybersecurity standards.

•Lead technical discussions and drive architectural decisions in collaboration with security architects, compliance teams, and government stakeholders to meet accreditation requirements.

Requirements

•8+ years in software engineering, with 2–3+ years in secure networked systems or CDS environments.

•A self-driven engineer who is comfortable taking ownership and providing technical guidance to the team.

•Proficiency in C/C++, Go, or Rust for performance-critical components.

•Proficiency in one or more of: Java (Spring/Spring Boot), C#/.NET, Node.js (TypeScript), or Python for application-layer work.

•Experience in Linux systems programming and network/socket programming.

•Security-first mindset with attention to detail and ability to operate in regulated, compliance-driven environments.

Good to Have

•Hands-on experience with Kubernetes and Docker in high-availability, security-hardened deployments.

•Familiarity with message-oriented middleware (e.g., RabbitMQ, Kafka, Redis) including encryption, authentication, and sanitization for cross-domain compliance.

•Working knowledge of OSI Layers 2–7, TLS/mTLS, IPsec, DPI, VLANs, firewall rules, and zero-trust network principles.

Find out more: https://www.stengg.com/cybersecurity

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

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. Our dedication to excellence and our strong track record have earned us a distinctive reputation for quality and trust as an integrated engineering group, spanning 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 Description:

• Assist in operational and support activities including case management, troubleshooting and onsite engineering support.
• Coordinate and perform testing activities such as regression, load, performance, integration, and acceptance testing.
• Assist in configuring, maintaining and troubleshooting servers and workstations in production and test environments.
• Assist in maintaining software documentation. The documentation includes test plan, test procedures, test report, maintenance manual, and user manual.
• Assist in deployment of custom software.
• Manage and implement software change requests.
• Provide administration and support services for custom systems and software releases. Example system administration tasks include file access control, user administration and change management on production and test environments.

Job Requirements:

• At least 3 years’ experience in development of production software in C/C++.
• Knowledge in Object Oriented Programming, Secure Coding, .NET programming, Python/PowerShell scripting and/or UI programming is preferred.
• Familiar with source code version control tools such as GIT.
• Strong interest in software development and engineering.
• Possess initiative and willingness to learn.
• Good written and oral communication skills.
• Singaporeans only

Find out more:  https://www.stengg.com/cybersecurity

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.

ST Engineering is a global technology, defence and engineering group with offices across Asia, Europe, the Middle East and theU.S., serving customers in more than 100 countries. The Group uses technology and innovation to solve real-world problems and improve lives. Our dedication to excellence and our strong track record have earned us a distinctive reputation for quality and trust as an integrated engineering group, spanning 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 Description:

• Lead and assist in operational and support activities including case management, troubleshooting and onsite engineering support.
• Plan, coordinate and perform testing activities such as regression, load, performance, integration, and acceptance testing.
• Plan and assist in configuring, maintaining and troubleshooting servers and workstations in production and test environments.
• Lead and assist in maintaining software documentation. The documentation includes test plan, test procedures, test report, maintenance manual, and user manual.
• Lead and assist in deployment of custom software.
• Manage and implement software change requests.
• Provide administration and support services for custom systems and software releases. Example system administration tasks include file access control, user administration and change management on production and test environments.

Job Requirements:

• At least 6 years’ experience in development of production software in C/C++.
• Knowledge in Object Oriented Programming, Secure Coding, .NET programming, Python/PowerShell scripting and/or UI programming is preferred.
• Familiar with source code version control tools such as GIT.
• Strong interest in software development and engineering.
• Possess initiative and willingness to learn.
• Good written and oral communication skills.
• Ability to lead a small team
• Singaporeans only

Find out more:  https://www.stengg.com/cybersecurity

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.

We are seeking a highly skilled and motivated Network Delivery Architect to join our esteemed team. As the Network Delivery Architect, you will be responsible for overseeing the design, planning, and successful implementation of critical network infrastructure projects. Your technical expertise and leadership will be pivotal in ensuring our network solutions align with business goals and exceed industry standards.

Responsibilities:

• Serve as the Network Delivery Architect post-tender award, ensuring the successful delivery of network solutions.
• Design end-to-end network solutions, translating complex enterprise requirements to a comprehensive network solution.
• Lead and conduct design reviews and workshops with customers and stakeholders and develop design documentation.
• Identify gaps and recommend solution mitigations where applicable.
• Lead and shape clients’ expectations.
• Liaise with vendors ensuring the network solutions meet project requirements.
• Evaluate the network technology and solutions in complying to security policies, best practices, guidelines and regulatory requirements, conducting proof-of-concept to showcase its technical feasibility, when necessary.
• Demonstrate expert knowledge of networking technologies, protocols, and infrastructure components, good knowledge of system and security technologies, protocols, and infrastructure components to make informed decisions regarding network design and integration.

Requirements:

• Requires a minimum of three years of experience in Network Architecture and Delivery.
• Strong technical skills with the ability to prioritize and execute in a methodical and disciplined manner.
• Excellent communication and presentation skills with the ability to present to a variety of audiences.
• Excellent documentation skills with the ability to conceptualize architectural designs and translate into technical writings and drawings.
• Work independently without any guidance, demonstrate positive working attitude, quick adaptability and embracing new changes.
• Comfortable working in a project based / client serving model.
• Familiar with Defence / Government guidelines preferred.
• Industry certifications such as CCNP and CCIE preferred but not mandatory.

Work location: Jurong East

Job Responsibilities:

• Plan and undertake scheduled preventive maintenance tasks.
• Develop and enhancement of Preventive Maintenance equipment checklists for Enterprise Network and UPS System.
• Perform the preventive maintenance by following PM checklist for functional checks, health checks at Clients’ premises.
• Perform basic equipment break-fix during preventive maintenance windows when required.
• Carry out basic troubleshooting, minor repair for IT enterprise products.
• Prepare preventive maintenance documentation for submission.
• Record and report equipment failure discovered during the preventive maintenance cycle.
• Provide maintenance and support for Customers' Enterprise IT Network Services.
• Perform break-fix which include troubleshooting and problem identification for any network services.
• Develop test cases and conduct proof of concept tests on new software and hardware prior to upgrade/deployment.
• Perform the role of Project Lead / Coordinator in project management for small to medium size projects or Service Requests.
• Work closely with Service Delivery Manager to fulfil deliverables, service report and operational request.
• Establish TAC cases with the principal vendor for complex problem until resolution.

Job Requirements:

• Good technical skills in engineering, computer and IT systems, and preferably in network. Preferably with good knowledge in any of the following areas:
• Enterprise Network products/solutions: Cisco/Alcatel Switches/routers, wireless link controller, etc.
• Network Monitoring: SolarWinds, Cisco Prime Infras, Alcatel Omni-Vista.
• Network Appliances based: Microsemi NTP Server, F5.Knowledge in ITIL processes and framework.
• CCNA / CCNP highly preferred
• Ability to engage external stakeholders to resolve site issues.
• Highly motivated and self-driven to complete assigned tasks with limited resources and tight schedule.
• Able to handle complex technical challenges and different groups of users and external vendors.
• At least 3 years of experience with successful track record in maintaining large scale IT infrastructure for Government related agencies.
• Excellent communication and interpersonal skills, with the ability to work well at all levels.
• Able to work flexible hours especially during after-office hour for scheduled maintenance windows, if required.
• Possess strong analytical skills with positive attitude.
• Required to have minimum 3 – 5 years of hands-on network technical support experience in SI Environment.
• Hands-on Experience working with LAN/WAN/WLAN which include
• Cisco Wireless, Routers, Catalyst and Nexus Switches, Firepower, IPS/IDS, ISE, ASA, ESA, WSA, SMA
• Alcatel Wireless and Omni Switch
• Arista Switches and Cloudvision
• Fortinet, Checkpoint and Palo Alto Firewalls
• SolarWinds NPM/NCM/NTA, F5 LTM and Aruba ClearPass

• Fast-paced environment
• Proven analytical and problem-solving abilities.
• Highly self-motivated and directed, with keen attention to detail.
• Experience working in a team-oriented, collaborative environment.
• Good communication and writing skills.
• Strong customer service orientation.
• Able to work in 24 x 7 standby duties

Work location: Jurong East

Responsibilities

• Provide project deployment for customers' Enterprise IT Network Services.
• Work closely with Project Manager to fulfil project deliverables.
• Able to perform the role of Project Lead for medium to mega size projects.
• Preferably with basic knowledge and hands on experience in any of the following areas:

•    Design, planning, integration, implementation and validation
o    LAN/WAN/WLAN: Cisco, Alcatel, Aruba routers and switches
•    Network security solutions
o    Security appliances: Palo Alto, Fortinet, Checkpoints, Cisco IPS/IDS, Cisco ISE, Aruba Clearpass
o    Network monitoring: SolarWinds, 
o    Network appliances based: F5 LTM/GTM, A10 LTM
•    Build or migrate in Cloud infrastructure solutions
•    Troubleshooting and problem identification

• Documentation skills to include creating and updating detailed environment design, installation, support and preventive maintenance documentation
• Develop test cases and conduct proof of concept tests on new software and hardware prior to upgrade/deployment.
• Establish TAC cases with principal vendor in complex problem till resolved.

Requirements

• Preferably with Cisco certification (CCNP/CCIE)
• Experience with Cisco, Alcatel, F5 products & Firewall products
• Experience with LAN, WAN, WLAN, Data and Security networking in implementation
• Fast-paced environment
• Proven analytical and problem-solving abilities.
• Highly self-motivated and directed, with keen attention to detail.
• Experience working in a team-oriented, collaborative environment.
• Good communication and writing skills.
• Strong customer service orientation
• Able to work flexible hours especially during after-office hour scheduled maintenance windows.
• Entry level candidates are welcome to apply for junior engineer positions
  

Work Location: Jurong East

Responsibilities

• Lead and oversee the deployment, configuration, integration, and optimization of complex enterprise network and security solutions.
• Serve as the technical lead for mid to large‑scale projects, providing architectural guidance, technical direction, and oversight across multi‑disciplinary teams.
• Collaborate closely with Project Managers to ensure project scope, timelines, quality standards, and customer requirements are consistently met.
• Implement and provide advanced support for network infrastructure solutions on platforms such as Cisco, Alcatel and Solarwinds
• Implement and provide advanced support for security technologies including Palo Alto, Fortinet, Checkpoint, Cisco Firepower, and Cisco ISE.
• Drive complex root‑cause analysis efforts, lead incident resolution, and act as technical escalation for network performance, security events, and critical connectivity issues.
• Prepare, review, and maintain comprehensive technical documentation, including high‑level designs (HLDs), low‑level designs (LLDs), configuration baselines, installation guides, and operational procedures.
• Conduct knowledge‑sharing sessions, internal training, and post‑incident reviews to uplift team capability and improve operational efficiency.
• Promote a culture of collaboration, accountability, and continuous improvement across the engineering organization.

Requirements

• Professional certifications such as CCNP, CCIE, or equivalent senior‑level credentials are highly preferred.
• Extensive hands‑on experience with enterprise networking and security technologies, including Cisco, Alcatel, Checkpoint, Palo Alto, and Fortinet platforms.
• Proven expertise in the design, implementation, and optimization of LAN, WAN, WLAN, data networking, and security architectures.
• Strong ability to operate in a fast‑paced, mission‑critical environment, managing complex tasks and multiple priorities with minimal supervision.
• Demonstrated analytical, troubleshooting, and root-cause analysis skills in large-scale enterprise environments.
• Experience working in a team-oriented, collaborative environment, with the ability to guide junior engineers and provide technical leadership.
• Excellent communication, stakeholder engagement, and technical documentation skills.
• Willing and able to support flexible work hours, including after-office-hour maintenance windows

Location: Jurong East

Responsibilities:

• Provide both corrective and preventive maintenance for customers’ Enterprise IT Network services, ensuring reliable network performance.
• Perform break-fix support, including troubleshooting and identifying issues across all network services.
• Develop and execute preventive maintenance activities following the PM checklist, conducting functional and health checks at clients’ premises, and submitting the required reports.
• Create test cases and conduct proof-of-concept testing for new hardware and software before upgrades or deployment.
• Collaborate closely with the Customer Success Managers to meet operational requirements, deliverables, and service reporting needs.
• Initiate and manage TAC cases with principal vendors for complex issues, ensuring timely resolution.

Requirements:

• Minimum 3–5 years of hands-on network technical support experience, preferably within a Systems Integrator (SI) environment.
• Strong technical troubleshooting capabilities with proven analytical and problem-solving skills.
• Practical experience in implementing, maintaining, and supporting LAN, WAN, WLAN, data networking, and security solutions, including break-fix activities.
• Cisco certifications are preferred.
• Hands-on experience with the following technologies and platforms are preferred:
• Cisco: Wireless, Routers, Catalyst & Nexus Switches, Firepower, IPS/IDS, ISE, ASA, ESA, WSA, SMA
• Firewalls: Fortinet, Check Point, Palo Alto
• Tools / Solutions: SolarWinds NPM/NCM/NTA, F5 LTM
• Ability to perform effectively in a fast-paced work environment.
• Highly self-motivated, detail-oriented, and able to work independently.
• Strong teamwork and collaboration skills.
• Good verbal and written communication skills.
• Strong customer service mindset and professionalism.
• Able to support 24×7 standby duties as required.

Work location: Jurong East