Senior Penetration Tester
About the role
Careers / Senior Penetration Tester
03 / 07
Senior Penetration Tester
Lead complex penetration tests across web applications, infrastructure, cloud environments and other applications. Identify non-obvious vulnerabilities, develop proof-of-concept exploits and produce reports that support effective remediation.
Offensive Security
Remote / hybrid Baltics Full-time from €2,200 / mo Published 2026-06-24
Apply for this role
Send your CV and a note to jobs@offseq.com
01
What you’ll do
Scope and lead black-box and white-box penetration tests covering web applications, APIs, networks, cloud environments and mobile applications. Develop custom exploits, scripts and tools to bypass controls and demonstrate concrete impact. Test manually and in depth beyond automated scanners, combining individual findings into realistic attack paths and business risk. Write precise, reproducible reports and guide clients through remediation. Help shape testing methodology, tooling and quality standards across the team. Mentor junior testers and review their work.
02
What you bring
At least four years of penetration-testing or offensive-security experience, including experience leading engagements. Strong across the OWASP Top 10, network and Active Directory attacks, and at least one cloud (Azure/AWS/GCP). Fluency in at least one scripting language, such as Python, Bash or Ruby, for custom tooling and automation. Practical experience with Burp Suite, Nmap, Metasploit, BloodHound and comparable tools. OSCP or equivalent skills, together with strong technical writing in English.
03
Additional advantages
Source-code review
OT/ICS, mobile or thick-client testing Public Burp/Ghidra extensions CVEs or CTF placings
Apply for this role Careers
Not the right fit? Search for Penetration Tester jobs in North Glengarry, Ontario, Canada
About OffSeq
OffSeq is a cutting-edge European cybersecurity company helping organizations build digital resilience through tailored, proactive security solutions. Headquartered in the Baltics and active across the EU, we empower businesses to defend against evolving threats while staying compliant with NIS2, GDPR, ISO 27001, and national cybersecurity laws.
🛡️ Our Mission To secure digital environments through real-time intelligence, ethical hacking, governance frameworks, and human-centric defense strategies.
🔍 Core Services
- CISO-as-a-Service – Fractional cybersecurity leadership for compliance and risk management
- Proactive Security Monitoring – 24/7 protection from emerging threats
- Red Team & Security Audits – Adversary simulations and technical reviews
- OSINT Reconnaissance – Discover your exposure before attackers do
- Social Engineering Tests – Evaluate your team’s response to manipulation
- Employee Training – Build a security-aware workforce
- DPIAs & Compliance Audits – Meet GDPR, NIS2, and NKDL obligations
- Policy & Tech Advisory – Governance, security policies, and tech stack selection
- Incident Response Planning – Be ready when breaches occur
🌐 Threat Radar Platform Our Threat Radar (radar.offseq.com) delivers real-time threat intelligence, severity scoring, CVE monitoring, attack mapping, and dark web insights across Europe and beyond.
🎯 Why OffSeq?
- Peace-of-mind security operations
- Recognized expertise trusted by SMEs and global brands like LG
- Scalable and affordable coverage across the EU
- Black-box audits to uncover hidden threats—no access needed
🔗 Visit offseq.com or radar.offseq.com to get started. Let’s build a safer, smarter digital future—together.
#CyberSecurity #NIS2 #CISOasAService #RedTeam #OSINT #ThreatIntelligence #DigitalResilience #Europe #CyberCompliance #OffSeq
Similar Jobs
Senior Penetration Tester
About the role
Careers / Senior Penetration Tester
03 / 07
Senior Penetration Tester
Lead complex penetration tests across web applications, infrastructure, cloud environments and other applications. Identify non-obvious vulnerabilities, develop proof-of-concept exploits and produce reports that support effective remediation.
Offensive Security
Remote / hybrid Baltics Full-time from €2,200 / mo Published 2026-06-24
Apply for this role
Send your CV and a note to jobs@offseq.com
01
What you’ll do
Scope and lead black-box and white-box penetration tests covering web applications, APIs, networks, cloud environments and mobile applications. Develop custom exploits, scripts and tools to bypass controls and demonstrate concrete impact. Test manually and in depth beyond automated scanners, combining individual findings into realistic attack paths and business risk. Write precise, reproducible reports and guide clients through remediation. Help shape testing methodology, tooling and quality standards across the team. Mentor junior testers and review their work.
02
What you bring
At least four years of penetration-testing or offensive-security experience, including experience leading engagements. Strong across the OWASP Top 10, network and Active Directory attacks, and at least one cloud (Azure/AWS/GCP). Fluency in at least one scripting language, such as Python, Bash or Ruby, for custom tooling and automation. Practical experience with Burp Suite, Nmap, Metasploit, BloodHound and comparable tools. OSCP or equivalent skills, together with strong technical writing in English.
03
Additional advantages
Source-code review
OT/ICS, mobile or thick-client testing Public Burp/Ghidra extensions CVEs or CTF placings
Apply for this role Careers
Not the right fit? Search for Penetration Tester jobs in North Glengarry, Ontario, Canada
About OffSeq
OffSeq is a cutting-edge European cybersecurity company helping organizations build digital resilience through tailored, proactive security solutions. Headquartered in the Baltics and active across the EU, we empower businesses to defend against evolving threats while staying compliant with NIS2, GDPR, ISO 27001, and national cybersecurity laws.
🛡️ Our Mission To secure digital environments through real-time intelligence, ethical hacking, governance frameworks, and human-centric defense strategies.
🔍 Core Services
- CISO-as-a-Service – Fractional cybersecurity leadership for compliance and risk management
- Proactive Security Monitoring – 24/7 protection from emerging threats
- Red Team & Security Audits – Adversary simulations and technical reviews
- OSINT Reconnaissance – Discover your exposure before attackers do
- Social Engineering Tests – Evaluate your team’s response to manipulation
- Employee Training – Build a security-aware workforce
- DPIAs & Compliance Audits – Meet GDPR, NIS2, and NKDL obligations
- Policy & Tech Advisory – Governance, security policies, and tech stack selection
- Incident Response Planning – Be ready when breaches occur
🌐 Threat Radar Platform Our Threat Radar (radar.offseq.com) delivers real-time threat intelligence, severity scoring, CVE monitoring, attack mapping, and dark web insights across Europe and beyond.
🎯 Why OffSeq?
- Peace-of-mind security operations
- Recognized expertise trusted by SMEs and global brands like LG
- Scalable and affordable coverage across the EU
- Black-box audits to uncover hidden threats—no access needed
🔗 Visit offseq.com or radar.offseq.com to get started. Let’s build a safer, smarter digital future—together.
#CyberSecurity #NIS2 #CISOasAService #RedTeam #OSINT #ThreatIntelligence #DigitalResilience #Europe #CyberCompliance #OffSeq