Founding Engineer

Harrington Starr; España; Remote; EUR 90,000 - 130,000; Full time

Job summary

Harrington Starr is seeking a Senior AWS Infrastructure Engineer to own and optimise a latency-sensitive cloud platform for a fast-growing quantitative trading firm. This fully remote B2B contract role focuses on high-performance compute workloads and aggressive cost optimisation.

The successful candidate will drive architecture decisions, reduce bottlenecks, and ensure robust networking and compute performance across AWS, HPC environments, and FinOps best practices.

Qualifications

• Experience supporting low-latency / high-performance compute workloads.
• Strong understanding of compute and networking performance.
• Ability to identify and resolve infrastructure bottlenecks.
• Proven experience with AWS cost optimisation / FinOps.
• Comfortable making architecture decisions and owning infrastructure end-to-end.
• Trading, HFT, electronic trading or digital-assets experience would be highly relevant.

Responsibilities

• Own and optimise AWS infrastructure for latency-sensitive workloads.
• Lead end-to-end architectural decisions for cloud infrastructure.
• Identify bottlenecks and drive performance improvements.
• Deliver cost-optimisation initiatives and FinOps best practices.

Skills

AWS

Low-latency HPC

Networking performance

FinOps / cost optimisation

Architecture ownership

Job description

Quant Trading / Digital Assets | Fully Remote | B2B Contract

I'm working with an early-stage quantitative trading firm looking for a Senior AWS Infrastructure Engineer to take ownership of its high-performance cloud infrastructure.

This isn't a traditional DevOps position. They need someone who understands how to build and optimise AWS infrastructure for latency-sensitive, high-performance compute workloads, while also keeping a close eye on AWS cost optimisation.

What they're looking for:

• Experience supporting low-latency / high-performance compute (HPC) workloads
• Strong understanding of compute and networking performance
• Ability to identify and resolve infrastructure bottlenecks
• Proven experience with AWS cost optimisation / FinOps
• Comfortable making architecture decisions and owning infrastructure end-to-end
• Trading, HFT, electronic trading or digital-assets experience would be highly relevant

This is a fully remote B2B contract with a small, highly technical team building within the quantitative/digital-assets space.

If your background sits at the intersection of AWS + low latency/HPC + performance + cost optimisation, I'd be interested in speaking.