Senior Security Engineer

1 мес. назад

United KingdomEuropeSeniorHybrid

security risk managementthreat modelingsecurity risk assessmentssecurity designarchitecture reviews

Senior Security Engineer role focusing on security risk management and governance in a financial technology firm.

О компании

The Company   Capital Markets Gateway LLC (CMG) is a financial technology firm, uniquely focused on the equity capital markets (ECM), connecting investors and underwriters via a neutral platform. CMG delivers integrated ECM data and analytics, unrivaled transparency into deal flow, and workflow efficiencies for an otherwise fragmented and inefficient process. Providing a digital system of record for firm-wide deal activity, CMG helps clients make more timely, better-informed decisions. Launched in 2017 by a team of ECM practitioners, CMG has completed two successful fundraising rounds and is backed by a group of the world’s most prestigious financial institutions. The CMG platform is currently relied upon by nearly 150 buy-side firms representing $40 trillion in AUM and 22 global inve

Обязанности

Lead threat modeling across products, infrastructure, and new initiatives, identifying and prioritizing risks, attack surfaces, and vulnerabilities. 
Conduct security risk assessments and translate findings into pragmatic, risk-based remediation prioritized by impact and blast radius.
Run security design and architecture reviews, partnering with Engineering and DevOps to reduce risk through secure design and simplicity, not just added controls.
Partner on customer due-diligence (DDQ) and SOC 2 Type II evidence gathering, keeping compliance sustainable rather than fire-drilled.
Build repeatable security workflows that embed controls into existing engineering processes instead of creating parallel ones.
Develop and maintain clear, role-relevant security policies, standards, and procedures, and drive consensus without direct authority.
Understand and implement controls for supply-chain risk and vulnerability management, including CI/CD enforcement and dependency hygiene, and build vulnerability triage workflows that score real risk by exploitability, reachability, and compensating controls rather than raw CVSS.
Harden and secure our cloud environment (Azure), partnering with platform engineering on secure configuration, reviewing and remediating vulnerabilities, identity and network controls, posture management, and logging and detection. 
Strengthen endpoint and identity controls across a global, remote workforce: least privilege, phishing-resistant MFA, and privileged access controls.
Support detection and response, partnering with our DFIR and MDR relationships and helping mature toward a proactive posture.
Address AI security risks (prompt injection, data poisoning, model and agent governance) and help keep AI controls ahead of adoption.
Take ownership of large, loosely defined initiatives and drive them from problem framing to operationalized program.
Work closely with senior leadership across the firm, bringing structure to ambiguity and sequencing work against risk.
 Surface risk early, challenge assumptions, and communicate clearly to both technical teams and senior stakeholders.

Требования

Have 6+ years of hands-on security experience, with real depth in security risk management: threat modeling, risk assessments, and security design and architecture review.
Have run governance, risk, and compliance work in practice, including audit and customer due-diligence support (SOC 2 or similar), and made it operational rather than just documented.
Have thrived in a startup or other small, fast-paced environment, owning large, ambiguous initiatives end-to-end with little scaffolding and shipping them.
 Have working breadth across the control landscape: cloud security, supply-chain and vulnerability management, endpoint and identity, and detection and response.
Are genuinely technical: comfortable in cloud environments (Azure preferred), CI/CD, and at least one scripting language (e.g. Python, Bash, PowerShell), so your controls hold up in engineering reality.
Lead with empathy and influence, and distill complex security concepts into clear, actionable guidance for technical and non-technical audiences alike.
Thrive navigating ambiguity and make sound, risk-based calls with incomplete information.
Work effectively in a remote-first setup: most of the team is remote, with a small London in-office presence, so you communicate crisply and operate well asynchronously.
Navigate an organization to get things done you know who to pull in for information or alignment, and you drive that alignment without formal authority.

Будет плюсом

Have banking, fintech, or other regulated industry experience.
Use AI tooling fluently in your own day-to-day work and are eager to integrate it into security workflows as a force multiplier. 
Have a bias toward automating repeatable security work — scripting, tooling, and process — to scale your impact.
Be familiar with AI and agentic security risks (prompt injection, data poisoning, model and agent governance).
Have experience mapping security frameworks (NIST CSF, ISO 27001, OWASP, NIST AI RMF).
Have hands-on exposure to detection and response, red-team, or pen-test work.
Have experience with our stack: Azure / Entra ID, GitHub Enterprise Cloud (GHAS, Actions, Dependabot), Sentinel, Zscaler, Intune, Vanta, and the Atlassian suite.
Hold relevant certifications (e.g. CISSP, CRISC, OSCP) — valued but not required.

Условия

Equity  
Unlimited PTO (28 days including bank holidays + unlimited additional paid leave)  
Comprehensive benefits program managed by Globalization Partners  
Premium life and income protection  
Top private medical and dental insurance  
Employee Assistance Program (EAP)  
Pension contributions  
Hybrid work environment (initially remote until office setup is complete)  
Education reimbursement  
Continuous learning opportunities  
Employee referral bonus  
Parental leave

Другое

We innovate with purpose  
We focus on outcomes vs. output  
We believe diverse and inclusive teams fuel innovation  
We are humble yet candid  
We do right by the customer