Network Architect

Elity Global
Greater London, UK
1 day ago
Apply on www.collegerecruiter.com
Prepare application

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Working hours
Regular working hours

Tech stack

Algorithmic Trading Bash Shell Border Gateway Protocol Data Centers Python (Programming Language) Multicasting Network Architecture Network Protocols Open Shortest Path First (OSPF) Performance Tuning Transmission Control Protocol (TCP) Wide Area Networks
+5 more
Scripting High Performance Computing Juniper Low Latency Cisco

Job description

We’re currently searching for a Senior Network Architect to join a team where infrastructure is not just foundational - it’s a strategic pillar that enables high-performance systems to operate at scale across global markets.

From day one, you’ll be contributing to systems that operate at unmatched scale and speed -supporting automated trading across the world’s most competitive financial markets. Whether you’re driven by the pursuit of microsecond performance, or by elegant, automated infrastructure design, this role offers the chance to work on some of the most challenging problems in modern networking.

As part of a top-tier Network Engineering team, you’ll have full ownership of globally distributed, low-latency network infrastructure - from design to deployment to day-to-day performance optimization.

What you will do:

  • Architect and evolve ultra-low latency L2/L3 networks across global exchange colocation sites and data centers.
  • Ensure the scalability and resilience of WAN and internal systems with a focus on observability and simplicity.
  • Identify bottlenecks and implement network tuning strategies that directly impact trading performance.
  • Build automated tooling for configuration, diagnostics, monitoring, and telemetry using Python or similar scripting languages.
  • Work across a wide range of domains: colocation strategy, timing systems (PTP/NTP), firewalling, edge security, and capacity planning.
  • Collaborate closely with internal trading, software, and hardware teams to align infrastructure with business-critical needs.

Who you are:

You’re an engineer who combines deep technical insight with a passion for problem solving at scale. You think in terms of systems, not silos and you care about performance, simplicity, and reliability in equal measure.

Your Profile:

  • Expertise in network protocols (TCP/UDP, OSPF, BGP, Multicast) and technologies across LAN/WAN environments.
  • Solid experience in multi-vendor environments (Cisco, Arista, Juniper, Palo Alto).
  • Strong scripting skills in Python, Bash, or similar for automation and tooling.
  • Comfort designing and maintaining network infrastructure in performance-sensitive environments (trading, telco, HPC, etc.).
  • Familiarity with colocation builds, clocking/timing systems, PTP/NTP, or low latency tuning is a strong plus.
  • An eagerness to engage with traders, engineers, and business stakeholders in a fast-paced, collaborative environment.
  • Full relocation & visa support if needed
  • Wellness perks: first-class commuting, catered meals, in-house massages, Friday drinks, and more
  • A generous budget for learning, certification and technical growth

If you’re excited by the idea of designing the backbone of a system where every microsecond counts and want to join a company that values technical depth, curiosity, and craft, we’d love to speak with you.

Requirements

  • Expertise in network protocols (TCP/UDP, OSPF, BGP, Multicast) and technologies across LAN/WAN environments.
  • Solid experience in multi-vendor environments (Cisco, Arista, Juniper, Palo Alto).
  • Strong scripting skills in Python, Bash, or similar for automation and tooling.
  • Comfort designing and maintaining network infrastructure in performance-sensitive environments (trading, telco, HPC, etc.).
  • Familiarity with colocation builds, clocking/timing systems, PTP/NTP, or low latency tuning is a strong plus.
  • An eagerness to engage with traders, engineers, and business stakeholders in a fast-paced, collaborative environment.
  • Full relocation & visa support if needed
  • Wellness perks: first-class commuting, catered meals, in-house massages, Friday drinks, and more
  • A generous budget for learning, certification and technical growth

Apply for this position

This job is hosted externally. Click below to view the full posting and apply.

Apply on www.collegerecruiter.com
Prepare application

Good distractions

Talks and stories from around this role — technically off-topic, practically not.

3:28 min

Balancing trade-offs across the five well-architected pillars

Mustafa Toroman · World Congress 2023

1:04 min

Introduction to Bitcoin script parsing tools

Steve Shadders · LIVE

1:29 min

Expanding practical knowledge with community sandboxes and resources

Stuart Clark · LIVE

1:23 min

Closing thoughts and educational resources for edge network engineering

Austin Gil · LIVE

1:53 min

Evaluating traditional scripting languages for modern development tasks

Jens Knipper Jens Knipper · Europe 2026 Virtual

3:45 min

Prototyping deterministic agents with n8n and PyATS

Alfonso Sandoval Rosas Alfonso Sandoval Rosas · Europe 2026 Virtual

Videos

See all

Related articles

See all