Senior Network Engineer — Scale & Automate with AI

Janestreet; Greater London; On-site; GBP 120,000 - 160,000; Full time

Job summary

Jane Street is seeking a Senior Network Engineer to scale our networks for growing business demands, standardise through automation, and explore AI-driven improvements. You will work on a multi-vendor, highly available network infrastructure across data centres and colocation facilities.

You will collaborate with diverse global teams on design projects, tracking, documentation, and operations while maintaining high reliability and performance standards in Linux environments.

Qualifications

• 7+ years of operating and deploying network infrastructure.
• 3+ years of ground-up network design experience.
• Proficient in Linux and at least one programming language.
• Strong automation mindset and AI/ML-oriented thinking.
• Ability to produce comprehensive, scalable documentation.
• Demonstrated collaboration with diverse global teams.

Responsibilities

• Collaborate on data centre and colocation initiatives, WAN routing optimisation, and cross-team design projects.
• Interface with stakeholders to assess business needs and develop new network features.
• Lead reactive and proactive tasks with thorough documentation to reduce outages and improve troubleshooting.

Skills

Network design

Routing protocols

Linux

Programming

Automation

Documentation

Collaboration

Tools

EVPN

VXLAN

Job description

Jane Street is seeking a Senior Network Engineer to scale our networks for growing business demands, standardise through automation, and explore AI-driven improvements. You will work on a multi-vendor, highly available network infrastructure across data centres and colocation facilities.

You will collaborate with diverse global teams on design projects, tracking, documentation, and operations while maintaining high reliability and performance standards in Linux environments.