OCaml Experience
Jane Street Group, LLC has multiple openings for the position of Senior Cybersecurity Operations Engineer in New York, NY.
The position duties are as follows: Lead the strategic design and implementation of advanced cybersecurity architecture to proactively defend against complex threats and emerging attack vectors. Day-to-day job duties include:
- Architect the development of sophisticated security systems and frameworks in OCaml, driving technical decisions that establish the foundation for the organization's security posture and ensuring scalable, resilient protection across all critical infrastructure;
- Provide technical leadership in designing cutting-edge cybersecurity solutions, mentoring junior team members and establishing engineering best practices that enable proactive threat identification and rapid incident containment across complex distributed systems;
- Drive cross-functional security strategy by partnering with stakeholders to assess risks, establish security governance frameworks, and lead the design of comprehensive cybersecurity solutions that align with business objectives; and
- Spearhead operational efficiency initiatives by designing automated security orchestration platforms and leading the transformation of manual processes into self-healing security systems that scale with organizational growth.
The position requires five (5) years of progressively responsible experience as a cybersecurity engineer or similar occupation at a financial services or technology firm. Experience must include:
- Five (5) years of experience responding to cybersecurity incidents in a high-stakes, time-sensitive environment where downtime directly impacts revenue, including experience with EDR tools and SIEM platforms for threat investigation and triage;
- Two (2) years of experience contributing to security tool development in OCaml — including incident response automation, threat detection, and security orchestration — with hands-on experience designing, implementing, and maintaining alerting and monitoring solutions using Elasticsearch and ElastAlert;
- Five (5) years of experience responding to cybersecurity threats targeting financial institutions, including phishing/credential theft, business email compromise (BEC), ransomware, and supply chain attacks, impersonation, and insider threat; and
- Five (5) years of experience programming on the Linux platform, including shell scripting, Python, and network security monitoring tools.
- All technical requirements for this role may be subject to employer conducted testing to assess minimum proficiency.
Part time telecommuting may be permitted with manager approval.
Ref. SCOE26
Skills Required
- Five years of progressively responsible experience as a cybersecurity engineer at a financial services or technology firm.
- Five years experience responding to cybersecurity incidents in high-stakes, time-sensitive environments, including use of EDR tools and SIEM platforms.
- Two years contributing to security tool development in OCaml, including incident response automation, threat detection, and security orchestration.
- Experience designing, implementing, and maintaining alerting and monitoring solutions using Elasticsearch and ElastAlert.
- Five years experience responding to threats targeting financial institutions (phishing, BEC, ransomware, supply chain attacks, impersonation, insider threat).
- Five years programming on the Linux platform, including shell scripting, Python, and network security monitoring tools.
- All technical requirements may be subject to employer-conducted testing to assess minimum proficiency.
Jane Street Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Jane Street and has not been reviewed or approved by Jane Street.
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Healthcare Strength — Medical, dental, and vision coverage are offered at no cost for employees and dependents, with robust onsite care including primary care, physical therapy, and mental‑health therapy. Private onsite gyms and counseling resources further reinforce the health focus.
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Parental & Family Support — Fully paid parental leave for all parents, with additional time for birth parents, is highlighted alongside expanded fertility benefits and well‑equipped nursing suites. These offerings position family support as a core element of the package.
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Wellbeing & Lifestyle Benefits — Daily free meals and snacks, private onsite gyms, recreation spaces, and rich learning programs (including tuition reimbursement and company classes) elevate day‑to‑day quality of life. Onsite medical suites and speaker series add to the lifestyle and development mix.
Jane Street Insights
What We Do
Jane Street works differently. As a liquidity provider and market maker, we trade on more than 200 trading venues across 45 countries and help form the backbone of global markets. Our approach is rooted in technology and rigorous quantitative analysis, but our success is driven by our people. Our bright, beautiful offices in the heart of New York, London, Hong Kong, and Amsterdam are open and buzzing with conversation. We come from many backgrounds and encourage travel between offices to share perspectives. Some of our best ideas come from bumping into a visiting colleague at the office coffee bar. Markets move fast. Staying competitive as we’ve grown has required constant invention—of new trading strategies, technology, and processes. We’ve found this is easier when you hire humble, kind people. They tend to help each other, and prioritize teamwork over titles. We invest heavily in teaching and training. There’s a library and a classroom in every office, because deepening your understanding of something is considered real work. Guest lectures, classes, and conferences round out the intellectual exchanges that happen every day. People grow into long careers at Jane Street because there are always new and interesting problems to solve, systems to build, and theories to test. More than twenty years after our founding, it still feels like we’re just getting started.
