Site Reliability Engineer

Autonomai Recruitment; Greater London; On-site; GBP 110,000 - 170,000; Full time

Job summary

Autonomai Recruitment is seeking a C++ SRE Engineer to ensure reliability and performance of critical trading infrastructure in a fast-paced environment. You will work with software engineers, traders and network teams to automate operations and resolve complex production issues.

The role combines hands-on software development with production engineering, performance tuning, and incident response to maintain highly available trading systems.

Qualifications

• Proficiency in C++ for high-performance trading systems.
• Strong knowledge of Linux and kernel concepts.
• Experience in SRE practices, incident response and production reliability.
• Familiarity with Kubernetes, containerized environments and CI/CD pipelines.
• Programming with Python or similar scripting for automation.
• Understanding of networking fundamentals and low-latency networking.

Responsibilities

• Develop and maintain high-performance C++ tools and services for trading platforms.
• Improve reliability and scalability of low-latency production systems.
• Build observability, monitoring, and alerting across applications and infra.
• Investigate complex production issues related to performance and memory.
• Lead or contribute to incident response and root-cause analysis.

Skills

C++

Linux

SRE

Kubernetes

CI/CD

Python

Networking

Observability

Automation

Low-latency

Kernel bypass

Tools

Ansible

Terraform

Job description

About the company

A global leader in technology-driven trading is looking for a talented C++ SRE Engineer to join its high-performing engineering organisation.

The firm designs and operates sophisticated, low-latency trading systems across global financial markets. Technology is central to its success, with engineering teams responsible for building highly performant, resilient and scalable platforms that operate under extreme demands for speed, availability and precision.

This is an opportunity to work at the intersection of modern C++, site reliability engineering, distributed systems and electronic trading within a genuinely engineering-led environment.

The role

As a C++ SRE Engineer, you will help ensure the reliability, performance and operational excellence of critical trading infrastructure and production systems.

You will work closely with software engineers, quantitative developers, traders, infrastructure specialists and network engineers to improve system resilience, automate operational processes and resolve complex production issues.

The role will combine hands-on software development with production engineering, performance optimisation, observability and incident response.

Key responsibilities

• Develop and maintain high-performance C++ tools, services and automation for critical trading platforms.
• Improve the reliability, scalability and operational resilience of low-latency production systems.
• Build monitoring, alerting and observability solutions across applications, infrastructure and networks.
• Investigate complex production issues involving performance, concurrency, memory, networking and distributed systems.
• Lead or contribute to incident response, root-cause analysis and post-incident improvement initiatives.
• Automate deployment, configuration, testing and operational workflows.
• Work with development teams to improve software design, instrumentation, release processes and production readiness.
• Experience working with Linux in a production engineering, SRE, systems engineering or software engineering environment.
• Strong understanding of systems programming, concurrency, memory management and performance optimisation.
• Experience supporting highly available, high-throughput or latency-sensitive production systems.
• Good knowledge of networking fundamentals, including TCP/IP, DNS, routing and network troubleshooting.
• Experience with automation and scripting, using languages such as Python, Bash or similar.
• Familiarity with observability principles, including metrics, logging, tracing and alerting.
• A structured approach to incident management, troubleshooting and root-cause analysis.
• Strong communication skills and the ability to collaborate with technically demanding stakeholders.
• Experience within electronic trading, financial technology, telecommunications, gaming, aerospace or another performance-critical environment.
• Knowledge of low-latency networking, kernel bypass, DPDK, InfiniBand, RDMA or user-space packet processing.
• Experience with Kubernetes, containers, CI/CD pipelines and infrastructure-as-code.
• Familiarity with configuration management and automation tools such as Ansible, Terraform or similar.