---
title: 'Network Engineer, Security at Jane Street'
canonical: 'https://feeny.ai/job/network-engineer-security-jane-street-singapore-8grd0134qmzd'
type: 'job'
last_seen: '2026-09-10'
---

# Network Engineer, Security at Jane Street

- **Company:** Jane Street
- **Location:** Singapore
- **Posted:** 2026-03-30
- **Last confirmed live:** 2026-09-10
- **Apply:** https://www.janestreet.com/join-jane-street/apply/8480752002?gh_jid=8480752002

## Job description

## About the Position

We are looking for an experienced Network Engineer to join our Network Security team to help us run, scale, and continuously improve our network security infrastructure through hands-on operations, design, and implementation. The ideal candidate will have strong networking fundamentals and experience with security appliances such as firewalls and proxy.

Jane Street’s numerous distributed systems are built on an agile, reliable, multi-vendor network infrastructure that supports all traffic profiles, from trading to internet connectivity. Supporting such a large multi-function network requires advanced tooling for monitoring and automation.

Strong communication and interpersonal skills will be needed to collaborate with colleagues across the firm globally. You will find and resolve issues, plan and execute deployments, and improve systems where possible. We’ll also look to leverage your advanced networking skills and security knowledge to:

- Work closely with our Network Engineering team on the design and deployment of security perimeter and adjacent network infrastructure
- Manage and continuously evolve network segmentation, DMZ, and other aspects of network security
- Evaluate and lab test new platforms for our network security infrastructure
- Collaborate with our Cybersecurity team on the detection and mitigation of threats and vulnerabilities on our network
- Interface with application owners and traders to enable business workflows securely
- Proactively enhance support by improving network infrastructure observability and scripting, and communicating requirements to our software engineers
- Improve our network security processes and documentation

A holistic approach to system design is critical for this role. Our broader Networking team prioritizes flexibility, compatibility, and efficiency when crafting solutions, all while seeking ongoing buy-in and feedback from users across the firm. Our firm’s culture prizes intellectual humility, openness, and continuous improvement, which translates directly to the daily work of this team. We’re all partners working toward shared goals and are always looking for the next best idea that will make our work stronger.

Your strong communication skills and analytical thinking will be invaluable as we support the daily work of our colleagues and keep our systems operating at the highest standard.

## About You

- Have 7+ years of experience operating and deploying network infrastructure
- Experienced with routing and network protocols (OSPF, BGP, PIM-SM)
- Experienced with troubleshooting transport protocols (TCP/UDP)
- Have a strong understanding of firewall hardware architecture, performance metrics, and functional components
- Experienced with firewall configuration and troubleshooting
- Understand Public Key Infrastructure and related technologies
- Understand modern encryption techniques
- Have a high capacity to learn; we are interested in how you think, not just what you know
- Able to context-switch, while still being able to prioritize and organize your stack
- Ideally have experience with overlay networks (EVPN, VxLAN)
- A flexible and reliable team player who enjoys working in a collaborative environment
- Preferably have proficiency in a programming language
- Fluency in English required

If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com.

## About Jane Street

## Company Overview
- **One-liner**: Jane Street is a global quantitative trading firm and liquidity provider that uses sophisticated technology, machine learning, and deep market expertise to trade financial products across equities, bonds, options, and ETFs.
- **Entity Type**: Private (not publicly traded)
- **Headquarters**: New York, USA (with offices in London, Hong Kong, Singapore, and Amsterdam)
- **Founded**: 2000
- **Founders**: Not publicly disclosed as a single founder group; the firm was founded by a team of quantitative traders and technologists.

## Core Business
- **Primary industry/industries**: Quantitative finance / Proprietary trading / Market making
- **Target customers**: Institutional clients (asset managers, pension funds, insurance companies, hedge funds) and global exchanges; the firm acts as a liquidity provider on over 200 electronic exchanges.
- **Mission or purpose statement**: “Solving the puzzle of global markets” — a research-driven approach to trading, blending human intuition with cutting-edge quantitative analysis.

## Products & Services
- **Market Making**: Jane Street provides continuous, two-sided quotes on equities, ETFs, bonds, options, and other instruments, helping keep prices consistent and reliable across global markets.
- **Proprietary Trading**: The firm trades its own capital across a wide range of asset classes, using sophisticated models and automated strategies.
- **Institutional Sales & Trading**: Partners with asset managers, pensions, and insurance companies to provide trading solutions and access to differentiated liquidity.
- **Technology & Infrastructure**: Builds all critical software in-house (trading systems, risk management, data analysis tools), using the OCaml functional programming language.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private firm). Industry estimates suggest Jane Street is one of the world’s largest and most profitable market makers, with annual trading volumes in the trillions of dollars.
- **Key Metric**: Not publicly disclosed. The firm is widely reported to have generated billions in annual revenue and profit, though exact figures are private.
- **Notable Investors/Partners**: 100% employee-owned. No external investors. Partners include top institutional clients globally.
- **Growth Signals**: Jane Street has grown every year in team, capital, and global presence since its founding in 2000. It has expanded from a focus on ETFs into equities, bonds, options, and other asset classes. The firm continues to invest heavily in machine learning and quantitative research.

## Competitive Advantages
- **Technical Moat**: Builds almost all software in-house using OCaml, a statically typed functional language that provides high reliability, real-time visibility, and performance at market scale.
- **Data & Scale**: Trades on 200+ electronic exchanges globally, processing trillions of historical events to uncover both sub-microsecond and long-term market inefficiencies.
- **Talent Density**: A culture of intellectual curiosity and collaboration across trading, research, and technology teams. The firm is known for hiring top minds from any background (math, physics, CS, engineering) and training them in-house.
- **Long-Term Track Record**: Over 20 years of consistent growth and profitability, navigating volatile markets with a disciplined, research-driven approach.

## Strategic Focus
- **Machine Learning & Quantitative Research**: Deepening the use of ML techniques across all trading strategies, from high-frequency to long-term systematic models.
- **Global Expansion**: Continuing to grow its presence in existing offices (NY, London, HK, Singapore, Amsterdam) and exploring new markets.
- **Technology Investment**: Ongoing investment in infrastructure, hardware (e.g., programmable hardware, high-performance computing), and software tools to maintain a competitive edge.
- **Talent Pipeline**: Heavy focus on recruiting interns and new grads, as well as experienced hires, with structured programs for learning and mentorship.

## Why Work Here
- **Culture**: Described as “open and collaborative,” with porous boundaries between trading, research, and technology. Intellectual humility and curiosity are highly valued.
- **Learning & Development**: Offers immersive internships, multi-day programs, direct mentorship, and a week abroad for interns. Full-time employees have access to extensive internal training, a library, and classrooms in every office.
- **Work Environment**: Most employees write code as part of their regular work. The firm is known for its technical excellence and for using the most advanced tools available.
- **Benefits**: Daily breakfast and lunch, fully-stocked kitchens, on-site gyms, nursing suites, quiet rooms, recreation spaces, health services, and more. Offices are designed for collaboration and deep focus.
- **Remote/Hybrid Policy**: Not explicitly stated, but the firm emphasizes in-person collaboration on trading floors. Offices are located in major global cities.
- **Diversity**: Actively seeks people from all backgrounds and emphasizes that the company is only as strong as its people.

## Sources
1. [janestreet.com - Home](https://www.janestreet.com/)
2. [janestreet.com - Overview](https://www.janestreet.com/join-jane-street/overview/)
3. [janestreet.com - What We Do](https://www.janestreet.com/what-we-do/overview/)
4. [janestreet.com - Departments](https://www.janestreet.com/join-jane-street/departments)
5. [janestreet.com - Open Roles](https://www.janestreet.com/join-jane-street/open-roles/)

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