Senior Red Team Engineer

JR United Kingdom; London; On-site; GBP 80,000 - 120,000; Full time

Job summary

Une institution financière mondiale recherche un Senior Red Team Engineer pour rejoindre son équipe de sécurité offensive. Vous serez responsable de diriger des opérations sophistiquées de red teaming, en utilisant vos compétences spécialisées pour simuler des adversaires réels tout en innovant dans un environnement de haute confiance.

Qualifications

• 3–4+ années d'expérience en red teaming, pas en pen testing.
• Un ensemble de compétences profondes dans une ou plusieurs domaines.
• Expérience avérée avec des frameworks de red team.

Responsibilities

• Concevoir et livrer des opérations de red team ciblant les actifs d'entreprise.
• Imiter le comportement APT réel, y compris l'infrastructure C2.
• Travailler avec les équipes de détection et de réponse.

Skills

Evasion

Malware personnalisé

Access physique

Infrastructure de phishing

Post-exploitation

Scripting ou développement (Python, Go, C#, C)

Communication claire

Tools

Sliver

Mythic

Cobalt Strike

Job description

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A global financial institution is hiring a Senior Red Team Engineer to join its internal offensive security team. This is a rare opportunity to work in a mature, highly capable global red team that focuses exclusively on real-world adversary simulation — not generic pen testing.

You’ll be responsible for leading and executing sophisticated red team operations across the bank’s global footprint. The team operates with full scope: endpoint, network, application, cloud, physical, and human-based vectors. You should bring a deep understanding of attacker tradecraft, be comfortable building your own tooling when needed, and have the mindset of someone who enjoys thinking like an adversary — not just scanning for vulnerabilities.

We’re looking for someone with real depth in at least one area of red teaming (e.g., evasive payload development, infrastructure, Windows internals, social engineering, etc.). This is a hands-on technical role, suited to someone who has already spent several years in dedicated offensive roles and wants to operate in a high-trust, high-impact environment.

What you’ll be doing:

• Designing and delivering full kill-chain red team operations targeting enterprise assets and staff
• Emulating real-world APT behavior, including custom tooling, C2 infrastructure, lateral movement, and exfiltration
• Working closely with detection and response teams to test visibility and improve resilience
• Leading campaign design, execution, and reporting, with a focus on realism and impact
• Creating or modifying tools, exploits, and payloads as needed — not relying solely on off-the-shelf frameworks
• Supporting threat-led testing programs and integrating threat intelligence into operations
• Maintaining strict operational security and professional discipline in all activities

What we’re looking for:

• 3–4+ years of true red teaming experience (not general pen testing)
• A deep skillset in one or more areas: evasions, custom malware, cloud red teaming, physical access, phishing infrastructure, or post-exploitation
• Strong scripting or development background (e.g., Python, Go, C#, or C)
• Experience with major red team frameworks (e.g., Sliver, Mythic, Cobalt Strike) and a willingness to go beyond them
• Familiarity with adversary emulation frameworks and MITRE ATT&CK
• Exposure to social engineering or physical red teaming is a strong bonus
• A calm, pragmatic communicator who can write clearly and explain technical risk to a non-technical audience
• High level of personal ownership, operational maturity, and discretion

This is an opportunity to work in one of the most well-resourced offensive security programs in financial services, with global scope, freedom to innovate, and a mission-critical mandate.