Security Engineer, Institutional Trading London

Blockchain Ventures; Greater London; On-site; GBP 60,000 - 80,000; Full time

Benefits offered by this job

ClassPass

Unlimited vacation policy

Opportunity to advance in a global tech company

Job summary

Blockchain Ventures in London is hiring a Security Engineer for its Institutional Trading team. In this pivotal role, you'll focus on securing off-chain trading processes and infrastructure while collaborating with various teams to map critical systems and workflows. Applicants should have over 5 years of relevant experience and expertise in translating technical risk into business terms.

This full-time position offers competitive salary and equity, with mandatory in-office presence four days a week and the flexibility of remote work for up to 20 days a year.

Qualifications

• 5+ years in security engineering, platform security, or application security experience.
• Proven expertise in Threat Modeling and structured reviews of complex data flows.
• Practical experience with KMS/HSM and IAM patterns.
• Exceptional ability to communicate with C-suite stakeholders.

Responsibilities

• Partner with Trading and FinOps teams to assess trading systems and workflows.
• Conduct vulnerability assessments and create Risk Treatment Plans.
• Act as primary security liaison for management and vendors.
• Implement monitoring for financial operations security signals.
• Support secrets and key management hygiene.
• Assist product security in triage of findings and remediation playbooks.
• Participate in incident exercises and document controls.

Skills

Security engineering

Threat Modeling

Observability and detection tooling

Secrets management platforms

Translation of technical debt into business risk

Pull Requests auditing

Tools

TypeScript

Java/Kotlin

Python

Job description

Security Engineer, Institutional Trading

London

Blockchain is connecting the world to the future of finance. As the most trusted and fastest-growing global crypto company, it helps millions of people worldwide safely access cryptocurrency. Since its inception in 2011, Blockchain has earned the trust of over 90 million wallet holders and more than 40 million verified users, facilitating over $1 trillion in crypto transactions.

You’ll be the hands‑on security engineer embedded with the Institutional Trading and Financial Operations (FinOps) team. Your focus is the secure operation of off‑chain trading processes and infrastructure that empowers our institutional business: integrations, signing flows, key custody interfaces, middle‑office workflows, order routing and settle pipelines that handle significant capital. You will support risk assessments, operating controls, automation to detect operational anomalies and remediation coordination. This is a high‑visibility role where you will focus on operational security engineering — ensuring that the tools and processes our traders use are resilient against both external threats and internal errors. This role does not require smart‑contract auditing.

WHAT YOU WILL DO

• Partner with Trading, Middle Office and Quant (Institutional FinOps) teams to map out inventory trading systems, data flows, third‑party integrations and custody/settlement touchpoints.
• Conduct deep‑drive assessments mapping critical assets and workflows to identify structural vulnerabilities. You will be responsible for defining the Target State and drafting the strategic Risk Treatment Plans (RTP) required to meet institutional‑grade standards (e.g., CCSS, NIST, DORA).
• Act as the primary security liaison for Senior Management and third‑party vendors. You will translate complex technical gaps into actionable business risk summaries, drive vendor evaluations for core security infrastructure, and manage the project lifecycle for high‑impact posture uplifts.
• Implement and maintain monitoring for FinOps‑specific security signals such as abnormal order patterns, signature misuse, unusual settlements. You will integrate these signals into our SIEM/SOAR for real‑time response.
• Support secrets and key‑management hygiene. You will ensure app/service keys are stored in KMS/Vault, scoped to least privilege and rotated automatically to prevent credential leakage.
• Assist product security in triage of SAST/SCA findings for FinOps‑related repositories. You will help implement CI checks and remediation playbooks.
• Participate in incident exercises, post‑incident reviews and remediation tracking for trading incidents.
• Document controls and produce concise risk summaries for FinOps leads and the Security.

WHAT YOU WILL NEED

• 5+ years in security engineering, platform security, or application security experience.
• Proven expertise in Threat Modeling. Ability to perform structured reviews (e.g., STRIDE) of complex data flows and operational processes.
• Experience with observability and detection tooling (SIEM, logs, metrics) and ability to write basic detection rules.
• Practical experience with KMS/HSM, secrets management platforms (Vault, 1Password, AWS/GCP KMS), IAM patterns and least‑privilege.
• Exceptional ability to translate “Technical Debt” into Business Risk for C‑suite stakeholders (CFO, CTO, Head of Trading).
• Ability to raise, read and audit Pull Requests in at least one language used in our stack (TypeScript, Java/Kotlin, Python).
• Experience conducting technical due diligence and scoping for third‑party security integrations.

NICE TO HAVE

• Familiarity with trading systems or financial operations (market‑making, execution, settlement) or close collaboration background with trading/quant teams.
• Exposure to blockchain on‑chain concepts (wallets, addresses, transactions) but no requirement to audit contracts.
• Familiarity with SOC operations, and post‑incident forensic analysis.
• Familiarity with SOC2, ISO 27001, or financial audit requirements.
• Any relevant industry certification.

COMPENSATION & PERKS

• Full‑time salary based on experience and meaningful equity in an industry‑leading company.
• This role is based in our London office, with a mandatory in‑office presence four days per week.
• Work from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year.
• ClassPass.
• Unlimited vacation policy; work hard and take time when you need it.
• The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field.

Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business needs at the time.