Senior Security Engineer Application Security
CodeLink
Job Description
Overview
We are looking for a Senior Security Engineer who will act as a security champion for project teams, helping identify potential security weaknesses and improve system security throughout the development lifecycle.
This role focuses on working closely with developers, DevOps engineers, and project teams to review system designs, identify vulnerabilities, and provide practical security recommendations before and during project releases.
Responsibilities
1. Security Review & Risk Identification
- Review project architectures, applications, and infrastructure to identify potential security risks.
- Act with a red-team mindset to identify weaknesses before production releases.
- Perform security assessments and vulnerability reviews on applications and cloud environments.
2. Security Design Review & Threat Modeling
- Participate in security design reviews for new systems and major architectural changes.
- Guide teams in performing threat modeling to identify potential attack scenarios.
- Provide recommendations to improve authentication, access control, data protection, and system security.
3. Vulnerability Management & Security Improvement
- Identify security vulnerabilities and work with Engineering and DevOps teams to resolve them.
- Support teams in implementing security improvements across application code, infrastructure, and configuration.
- Track remediation progress and ensure security issues are addressed.
4. Secure Development Practices
- Promote secure development practices (Secure SDLC) within engineering teams.
- Provide guidance on secure coding, secrets management, and secure system design.
- Share security knowledge and practical best practices with developers.
5. Client Security & Compliance Support
- Ensure project teams meet security and compliance requirements defined by clients.
- Support project teams in responding to client security reviews.
- Help ensure projects follow internal security policies and standards such as ISO27001.
- 5+ years of experience in security engineering, application security, DevSecOps, or infrastructure security.
- Strong understanding of application security principles and common vulnerabilities (OWASP Top 10).
- Experience with cloud environments (AWS, GCP, or Azure).
- Familiarity with:
- Authentication and authorization mechanisms
- Secure coding practices
- Authentication and authorization
- Encryption and secrets management
- Network security concepts
- Experience with security testing tools, vulnerability scanning, or penetration testing techniques is a plus.
- Strong English communication skills (written and verbal).
- Strong collaboration skills to work across multiple project teams.
- Security certifications such as Security+, CISSP, CEH, or similar are a plus.
Who We Are
CodeLink is an innovative and design-focused development agency. We focus on user-centric design and agile development to bring the product vision of our clients to life. We handle the end-to-end development of products, developing the product vision through product understanding, designing experiences through UX design, refining these flows with modern UI design, and developing products through iterative agile development.
We work with both early-stage product teams and teams with existing products from a wide range of countries and industries. We focus on modern technologies and work directly with our clients. We design using design-thinking principles on tools such as Sketch, Figma, Zeplin, and more, and develop products leveraging our tech stack of React, React Native, Rails, Python, and Node.JS.
Our Core Values
1. Take full ownership of delivery
We take ownership of our client projects and ensure that we deliver what we are in charge of to the best possible outcome.
2. Deliver our highest level of quality
We take pride in the high quality that we deliver and work at a sustainable pace to ensure we can always deliver on that quality.
3. Stay consistent in plans and processes
We keep open and transparent communication with our teammates and our client whilst following agile development practices.
4. Have empathy for all those we work with
We show empathy and respect to all those we work with to gain a deeper understanding without any judgment or assumption.
5. Continuously improve and grow
We aim high with a growth mindset and see every day as an opportunity to develop ourselves, our processes, and our products.
Top 3 Reasons To Join Us
- Use cutting-edge & proven technologies
- Work directly with international clients
- Open environment with a focus on learning
Why You’ll Love Working With Us
We work hand-in-hand with our clients to fully invest in their product development and build solutions together for their target market.
- We fully invest in our team, we will help you build yourself up in any area you feel you need development, be it in English, learning a new design tool, developing your design thinking, and more. We want to make sure that you’re always learning and developing yourself whilst a part of our team.
- We respect both Product and Technology equally, ensuring all of the Products we work on have features with true market potential and ensuring all of the team contribute to, understand, and believe in what they are developing.
- We are very selective with our clients, we only work on awesome products we believe in and that show strong market potential.
- We respect you and your personal hours, we keep a sustainable pace by working standard 8 hour days from Monday to Friday, ensuring we only plan for what we can achieve.
- We are fully agile and only work with Clients who work the same, working with set sprint goals and working at our rate of velocity.
- You will have ownership over your role, giving you the opportunity to experiment and try new processes to better improve your day-to-day responsibilities. We are always open to improving our processes.
Company Benefits
- An open and dynamic working environment with no dress code and the freedom to be yourself.
- Modern open-space office with comfortable workspace, a PS4 games room, and chill-out areas.
- Salary review twice a year with opportunities for promotions and spot awards.
- Yearly Training Budget up to 5 million VND per staff.
- Culture of recognition with monthly rewards for those with the most kudos.
- All office benefits and full salary during probation.
- Flexible starting time up to 10 AM working Monday - Friday with no overtime and a long lunch break.
- Two days remote every week taken on any days you choose so you can work from wherever you like.
- Full Vietnamese holidays off with 12 annual leave days per year with all days not taken paid out in cash.
- Yearly company trip, monthly team all-hands activities, welcome lunches for new members, the monthly budget for team celebrations.
- Celebrations for special days in the year, such as Women’s Day, YEP, Christmas.
- Gold level Health Insurance coverage from Bao Viet Insurance and a yearly complete Health Check.
- Employee-led clubs within the company; games teams, sports teams, etc.
- Buddy system, tech, and product talks, mentoring, and paid-for training for any skills you’d like to develop.
- Weekly agile sessions and professional coaching.
- Meal allowance, parking allowance, petrol allowance, and unlimited snacks and coffee every day.
- Options for a full MAC or PC set-up are completely provided.
Where We Work
- HCMC Head Office: Level 8, Vina Building, 131 Xo Viet Nghe Tinh, Ward 17, Binh Thanh District, HCMC
- Hanoi Office: Ba Dinh District, Ha Noi City
- Da Nang Office: Level 8, Bach Dang Complex, 50 Bach Dang, Hai Chau Ward, Da Nang City
Benefits
Who We Are
CodeLink is an innovative and design-focused development agency. We focus on user-centric design and agile development to bring the product vision of our clients to life. We handle the end-to-end development of products, developing the product vision through product understanding, designing experiences through UX design, refining these flows with modern UI design, and developing products through iterative agile development.
We work with both early-stage product teams and teams with existing products from a wide range of countries and industries. We focus on modern technologies and work directly with our clients. We design using design-thinking principles on tools such as Sketch, Figma, Zeplin, and more, and develop products leveraging our tech stack of React, React Native, Rails, Python, and Node.JS.
Our Core Values
1. Take full ownership of delivery
We take ownership of our client projects and ensure that we deliver what we are in charge of to the best possible outcome.
2. Deliver our highest level of quality
We take pride in the high quality that we deliver and work at a sustainable pace to ensure we can always deliver on that quality.
3. Stay consistent in plans and processes
We keep open and transparent communication with our teammates and our client whilst following agile development practices.
4. Have empathy for all those we work with
We show empathy and respect to all those we work with to gain a deeper understanding without any judgment or assumption.
5. Continuously improve and grow
We aim high with a growth mindset and see every day as an opportunity to develop ourselves, our processes, and our products.
Top 3 Reasons To Join Us
- Use cutting-edge & proven technologies
- Work directly with international clients
- Open environment with a focus on learning
Why You’ll Love Working With Us
We work hand-in-hand with our clients to fully invest in their product development and build solutions together for their target market.
- We fully invest in our team, we will help you build yourself up in any area you feel you need development, be it in English, learning a new design tool, developing your design thinking, and more. We want to make sure that you’re always learning and developing yourself whilst a part of our team.
- We respect both Product and Technology equally, ensuring all of the Products we work on have features with true market potential and ensuring all of the team contribute to, understand, and believe in what they are developing.
- We are very selective with our clients, we only work on awesome products we believe in and that show strong market potential.
- We respect you and your personal hours, we keep a sustainable pace by working standard 8 hour days from Monday to Friday, ensuring we only plan for what we can achieve.
- We are fully agile and only work with Clients who work the same, working with set sprint goals and working at our rate of velocity.
- You will have ownership over your role, giving you the opportunity to experiment and try new processes to better improve your day-to-day responsibilities. We are always open to improving our processes.
Company Benefits
- An open and dynamic working environment with no dress code and the freedom to be yourself.
- Modern open-space office with comfortable workspace, a PS4 games room, and chill-out areas.
- Salary review twice a year with opportunities for promotions and spot awards.
- Yearly Training Budget up to 5 million VND per staff.
- Culture of recognition with monthly rewards for those with the most kudos.
- All office benefits and full salary during probation.
- Flexible starting time up to 10 AM working Monday - Friday with no overtime and a long lunch break.
- Two days remote every week taken on any days you choose so you can work from wherever you like.
- Full Vietnamese holidays off with 12 annual leave days per year with all days not taken paid out in cash.
- Yearly company trip, monthly team all-hands activities, welcome lunches for new members, the monthly budget for team celebrations.
- Celebrations for special days in the year, such as Women’s Day, YEP, Christmas.
- Gold level Health Insurance coverage from Bao Viet Insurance and a yearly complete Health Check.
- Employee-led clubs within the company; games teams, sports teams, etc.
- Buddy system, tech, and product talks, mentoring, and paid-for training for any skills you’d like to develop.
- Weekly agile sessions and professional coaching.
- Meal allowance, parking allowance, petrol allowance, and unlimited snacks and coffee every day.
- Options for a full MAC or PC set-up are completely provided.
Where We Work
- HCMC Head Office: Level 8, Vina Building, 131 Xo Viet Nghe Tinh, Ward 17, Binh Thanh District, HCMC
- Hanoi Office: Ba Dinh District, Ha Noi City
- Da Nang Office: Level 8, Bach Dang Complex, 50 Bach Dang, Hai Chau Ward, Da Nang City