Security Engineer - Incident Response

About the role

Squarespace is seeking a Security Engineer focused on investigations and incident response. You will work in a hybrid model from our Dublin office, partnering with cross‑functional teams to protect both our platform and corporate environment.

Key responsibilities

• Investigate security events using SIEM and SOAR platforms.
• Design and tune alerts for customer and corporate environments.
• Share findings to drive security feature enhancements.
• Respond to active incidents, analyse historical compromises, and produce detailed reports.
• Develop threat‑detection strategies, alerting rules, and response playbooks.
• Conduct reactive threat‑hunting across endpoints, networks, applications and logs.
• Maintain up‑to‑date threat intelligence and support security‑focused tooling.
• Mentor junior team members and contribute to their technical growth.

Required profile

• 5+ years of experience in information security.
• Relevant certifications are a plus (e.g., OSCP, OSCE, OSWP).
• Hands‑on experience with SIEM and SOAR technologies.
• Strong knowledge of cloud, container security and infrastructure‑as‑code.
• Experience in malware analysis, reverse engineering, host‑based and memory forensics.
• Familiarity with red‑team/purple‑team exercises and cyber‑deception.

Required skills

• SIEM, SOAR
• Cloud security (AWS, GCP)
• Container security, IaC
• Malware analysis, reverse engineering
• Host‑based and memory forensics
• Python, Go, JavaScript, Bash
• TCP/IP, UDP, IPSEC, HTTP/HTTPS
• Red‑team, purple‑team techniques
• Networking and web‑application security

What we offer

• Health insurance covering 100% of premiums for you, partner and dependents.
• Life and income protection, fertility and adoption benefits.
• Headspace mindfulness subscription and employee assistance program.
• Pension with employer match and flexible paid time off.
• Generous parental leave (26 weeks maternity, 12 weeks paternity).
• Annual tax‑free stipend, education reimbursement and donation matching.
• Free lunch, snacks and access to cultural landmarks in Dublin.
• Competitive cash compensation range €70,000‑€107,800 per year.