Founding Senior AWS Infra Engineer Remote Low-Latency HPC

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

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.