Senior Offensive Security Engineer

DRW
London, United Kingdom

Who this role is best for

A natural match if you have hands-on offensive security experience and a track record of building custom tooling.

Best fit for

  • Candidates with 5+ years in offensive security and a history of full engagement lifecycle work
    — “5+ years of hands-on experience in offensive security, penetration testing, or red teaming, including full engagement lifecycle work”
  • Individuals who can translate technical findings into risk narratives for leadership
    — “A track record of clear, precise reporting and communication and you can translate technical findings into risk that both engineers and executives understand”
  • Professionals with experience in AI/ML security risks and blockchain security
    — “Experience with smart contract auditing and blockchain security”
  • Candidates who model realistic attacker TTPs and are familiar with MITRE ATT&CK framework
    — “Plan and execute red team engagements, penetration tests, and adversary simulations against our trading infrastructure, corporate environment, and cloud platforms, acting as a trusted adversary”
  • Individuals who are comfortable with cloud platforms and can work with trading and security teams globally
    — “Headquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia”

Things to consider

  • This role involves high-trust expectations and requires influencing leadership through risk narratives
    — “Present engagement results and risk narratives to both technical teams and senior leadership in a way that drives action”
  • Candidates must be prepared to work across trading, infrastructure, and security domains
    — “You’ll work closely with our security, infrastructure, and trading teams to translate what you find into real improvements”

How to stand out

  • Highlight your ability to build custom tooling and scripts for offensive security tasks
    — “Design and build custom tooling, scripts, and exploits to emulate adversary behavior”
  • Emphasize your experience with adversary simulations and realistic TTP modeling
    — “Plan and execute red team engagements, penetration tests, and adversary simulations against our trading infrastructure”
  • Demonstrate your understanding of AI/ML security risks and how to address them
    — “Assess the security of AI and LLM-integrated systems, including prompt injection, model manipulation, data poisoning”
  • Showcase your ability to collaborate and improve organizational security awareness
    — “Run social engineering and phishing simulations to assess and improve organizational security awareness”
  • Demonstrate knowledge of cloud platforms and their integration into offensive security testing
    — “Plan and execute red team engagements... cloud platforms”
Pace · Fast PacedCollaboration · HighAutonomy · HighDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • successful red team engagements
  • penetration tests
  • vulnerability identification and remediation
Typical background
information securitycybersecurity

Skills & requirements

Required

Penetration TestingRed Team OperationsDigital ForensicsIncident ResponseMitre Att&ck FrameworkNetwork SecurityCloud SecurityScripting Languages

Preferred

AI In CybersecurityLlm-integrated Systems Security

Stack & domain

Red Team EngagementsPenetration TestsAdversary SimulationsMitre Att&ckCustom ToolingScriptsExploitsAi-assisted ToolingLlm-powered Offensive TechniquesCommunicationTeamworkLeadershipProblem-solvingSecurityTrading InfrastructureCloud PlatformsAI And Llm-integrated Systems

About the role

Original posting from DRW via Greenhouse

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading at our own risk.

Headquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia, we trade a variety of asset classes including Fixed Income, ETFs, Equities, FX, Commodities and Energy across all major global markets. We have also leveraged our expertise and technology to expand into three non-traditional strategies: real estate, venture capital and cryptoassets.

We operate with respect, curiosity and open minds. The people who thrive here share our belief that it’s not just what we do that matters–it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus.

About the Role

DRW is building out its offensive security capability, and we’re looking for a Senior Offensive Security Engineer to lead the charge. In this role, you’ll plan and execute red team engagements, penetration tests, and adversary simulations against our trading infrastructure, corporate environment, and cloud platforms, acting as a trusted adversary who helps us find and fix weaknesses before anyone else does.

You’ll work closely with our security, infrastructure, and trading teams to translate what you find into real improvements, and you’ll help shape the methodology, tooling, and roadmap for offensive security at DRW as the function matures. This is a hands-on, high-trust role for someone who thinks like an attacker, communicates like a partner, and cares about making the firm measurably harder to compromise.

What You'll Do

Plan and execute red team engagements and adversary simulations against trading systems, corporate IT, and cloud environments, modeling realistic attacker tactics, techniques, and procedures (TTPs) mapped to frameworks such as MITRE ATT&CK

Conduct penetration tests across networks, web and internal applications, APIs, and cloud infrastructure, and report findings with clear, actionable remediation guidance

Design and build custom tooling, scripts, and exploits to emulate adversary behavior, test control effectiveness, and validate detection coverage

Partner with the Security Engineering and SOC teams in purple-team exercises to close gaps between what attackers can do and what defenders can see

Run social engineering and phishing simulations to assess and improve organizational security awareness

Identify, validate, prioritize, and track vulnerabilities and control weaknesses through to remediation in collaboration with infrastructure, platform, and application owners

Present engagement results and risk narratives to both technical teams and senior leadership in a way that drives action

Stay current on the threat landscape, emerging TTPs, and offensive tooling, and bring that knowledge back into DRW’s defenses

Assess the security of AI and LLM-integrated systems, including prompt injection, model manipulation, data poisoning, and abuse of agentic workflows, and work with teams building these systems to harden them

Leverage AI-assisted tooling to accelerate reconnaissance, vulnerability discovery, and exploit development, and evaluate new AI-powered offensive techniques as they emerge

Help define and mature DRW’s offensive security methodology, standards, and tooling, and mentor other engineers on the security team

What We're Looking For

5+ years of hands-on experience in offensive security, penetration testing, or red teaming, including full engagement lifecycle work: reconnaissance, initial access, privilege escalation, lateral movement, persistence, and exfiltration

Strong scripting or programming ability for building and adapting offensive tooling

Solid understanding of networking fundamentals, Windows, macOS, and Linux internals, identity providers, and cloud platforms

Practical experience with common offensive security tools (e.g., Cobalt Strike, Metasploit, BloodHound, Burp Suite, Nmap) and a track record of building your own when the situation calls for it

Working knowledge of the MITRE ATT&CK framework, adversary emulation, and detection evasion techniques, along with enough understanding of defensive controls and tooling to help defenders improve

A track record of clear, precise reporting and communication and you can translate technical findings into risk that both engineers and executives understand

Experience with smart contract auditing and blockchain security

Familiarity with AI/ML security risks, including adversarial attacks on models, prompt injection, and the offensive and defensive implications of LLM-powered tooling

A collaborative mindset: you see red teaming as a way to make the whole organization more secure, not just to find flaws

For more information about DRW's processing activities and our use of job applicants' data, please view our Privacy Notice at https://drw.com/privacy-notice.

California residents, please review the California Privacy Notice for information about certain legal rights at https://drw.com/california-privacy-notice.

#LI-BL1

Source: DRW careers (Greenhouse)

Similar roles

More roles at DRW