Senior Security Engineer - freelance

Role Summary

So, what are the main responsibilities of an Senior Security Engineer in Netcompany ?

The Senior Security Engineer is responsible for designing, implementing, and maintaining cybersecurity solutions to protect the organization’s systems, infrastructure, and data.

Requirements

As a Senior Security Engineer , you will

• Design, implement, maintain, and continuously improve cybersecurity solutions protecting government systems and critical infrastructure using modern security technology stacks.
• Integrate and securely configure security controls in line with organizational policies, EU regulations, and public sector standards.
• Monitor, evaluate, and investigate security controls and events, including security event analysis and SIEM tooling (e.g., Splunk investigations).
• Identify, analyze, and remediate vulnerabilities and incidents, including patching, system hardening, and certificate and cryptographic asset management.
• Ensure the security and resilience of systems across on-premise, cloud, and hybrid environments, including high-availability infrastructures.
• Implement and enforce cybersecurity policies, procedures, and controls aligned with governance, risk, and compliance (GRC) frameworks.
• Develop scripts, tools, and automation to enhance security monitoring, detection, and response capabilities.
• Produce technical documentation, risk assessments, and audit reports; communicate findings to stakeholders and management.
• Collaborate with internal teams, external providers, and public sector bodies; provide cybersecurity expertise and user support.

What would make you a fit for the role

• University Degree in Cybersecurity, Computer Science or related field and minimum 10 years of professional experience in cybersecurity, information security, or secure systems engineering within complex environments.
• Proven expertise in security standards, frameworks, and compliance requirements (e.g., ISO 27001, NIS/NIS2, GDPR, or similar public sector frameworks).
• Strong knowledge of security technologies and identity protocols: SSL/TLS, X.509, SAML, OAuth, OpenID Connect, JWT, AWS KMS, KMIP, PKCS#11, including digital certificates and hardware security modules (HSMs).
• Solid understanding of cryptographic principles and algorithms: AES, GCM, PBKDF2, HMAC, SHA-2.
• Advanced knowledge of network security and architecture including next-generation firewalls and web application firewalls (e.g., Fortigate, Imperva), TCP/IP, IPSec, HTTP/HTTPS, routing, firewalls, routers, and switches.
• Proficiency in Linux/Unix systems, system hardening, operating system security, and secure configuration practices.
• Experience with secure software development lifecycle (SDLC), programming/scripting, and automation in security contexts.
• Experience securing large-scale, complex environments (e.g., data centres, government systems, cloud and hybrid infrastructures).
• Strong communication skills in English, knowledge of French is an advantage.
• If you are looking forward to be part of a diverse environment, and have the opportunity to work alongside well-experienced professionals, on challenging, large-scale projects that directly impact millions of citizens around the globe, then this is the place to be!
• Please upload your CV in English via the Apply button. All applications will be treated as strictly confidential.

We ensure equal opportunities, treatment, and consideration to all candidates. Discrimination based on sex, racial or ethnic origin, religion or belief, disability, age, sexual orientation or marital status, physical or mental disability, or any other factor protected by applicable laws and regulations is prohibited. As part of the Netcompany culture, we respect human rights and focus on creating a positive workplace, where all employees are valued, and where diversity and inclusion are a vital part of our everyday working experience.

In the following link you may find our CV Submission privacy notice:

Are you ready to shape the future technological landscape in Europe?

We are dedicated to responsible digitalisation, building innovative, inclusive solutions that drive meaningful impact. With over 8,900 professionals across Europe, we help EU institutions, public and private organisations thrive in a rapidly evolving digital world. Are you ready to shape the future through technology? Your journey starts here. Take a look at some of our impactful projects here:

About the Company

Netcompany was founded in 2000 with the headquarters in Copenhagen, Denmark. Today, we are an international company with more than 9800 employees working from over 10 locations. We serve a wide array of customers in their digital transformation journeys in public and private sectors across Europe.

Our Projects come from Europe

You will get the chance to work on different programming languages and technologies as this will vary from project to project. A large part of our projects uses technologies like AngularJS, gulp, Sass, React and node.js on Java and .NET. Besides that, we work with SharePoint, Microsoft Dynamics CRM, Salesforce, Microsoft SQL-server, Sitecore, Oracle and Weblogic to name just a few.

We are looking for ambitious graduates to join us on a permanent basis to drive forward our delivery capability and deliver the optimum solutions to our clients in Europe. You will join our strong and dedicated team based in Ho Chi Minh City, where you will have the opportunity to work with some of the most skilled IT consultants in Vietnam and our technically skilled employees in Europe.

Why you should join us

International professional working environment.

Opportunities to join training courses in Europe.