Senior Security Engineer - freelance

Netcompany; United States; Hybrid; USD 140,000 - 190,000; Full time

Job summary

Netcompany is seeking a Senior Security Engineer to design, implement, and maintain security solutions across on‑prem, cloud, and hybrid environments. You will lead vulnerability management, enforce GRC-aligned policies, and drive automation for threat detection and response.

Ideal candidates bring 10+ years in cybersecurity, deep knowledge of cryptography, network security, and compliance frameworks (ISO 27001, NIS/NIS2, GDPR).

Qualifications

• University degree in cybersecurity, CS or related field and extensive hands-on cybersecurity experience.
• Experience with security standards, frameworks and compliance, including ISO 27001, NIS/NIS2, GDPR.
• Strong grasp of cryptographic concepts, TLS/X.509, SAML, OAuth and related tooling.
• Deep knowledge of network security, FW, WAFs, TCP/IP, IPSec, HTTP/HTTPS.
• Proficient in Linux/Unix security, system hardening, and secure configurations.
• Experience with SDLC, scripting/automation in security contexts.
• Proven ability securing large, complex environments across on-prem, cloud and hybrid.
• Excellent written and spoken English; French a plus.

Responsibilities

• Design, implement, and maintain cybersecurity solutions for government and critical infrastructure.
• Integrate security controls in line with policies, EU/regulatory standards.
• Monitor and investigate security events using SIEM tools (e.g., Splunk).
• Identify, remediate vulnerabilities, patching, hardening, credential and certificate management.
• Ensure security across on-prem, cloud, and hybrid environments with high availability.
• Enforce cybersecurity policies and controls following GRC frameworks.
• Develop automation to enhance security monitoring and response.
• Produce risk assessments, audit reports, and stakeholder communications.
• Collaborate with internal teams, vendors, and public sector bodies.

Skills

Security engineering

ISO 27001

NIS/NIS2

GDPR

Cryptography

Network security

Linux/Unix

SDLC

Automation

Cloud & on-prem

English communication

Education

University Degree in Cybersecurity/Computer Science

Tools

Splunk

Fortigate

Imperva

AWS KMS / KMIP / PKCS#11

Job description

Company Description

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: https://netcompany.com/cases/

Job Description

So, what are the main responsibilities of anSenior Security Engineerin Netcompany?

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

As aSenior 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.

Qualifications

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 includingnext-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.

Additional Information

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!

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: https://netcompany.com/cv-submission-privacy-notice/