Cloud Infrastructure Engineer

Salary: £69,000 - 109,000 per year

Requirements:

• Demonstrated expertise in owning production infrastructure as an engineer, with a background in Platform, SRE, or Infrastructure Engineering.
• Deep cloud infrastructure knowledge, especially around VPC design, compute optimization, and performance networking features.
• Proven ability to write and maintain Terraform modules and operate infrastructure as code safely through reviews, testing, and deployment pipelines.
• Solid Linux fundamentals, including networking and systems performance tuning.
• Ability to program in at least one language, such as Python or Go, for tooling, automation, and integration work.
• Collaborative skills to work effectively with team members and stakeholders.
• Ability to communicate technical information to both technical and non-technical stakeholders.
• Ability to gauge business problems and prioritize tasks accordingly.
• Strong preference for experience managing multi-cloud infrastructure such as AWS, GCP, or AliCloud.
• Strong preference for experience building and managing latency-sensitive systems in cloud, such as trading, real-time systems, or market data.
• Strong preference for hands-on experience managing WebSocket infrastructure under burst load and unstable upstream conditions.
• Strong preference for solid understanding of exchange rate limits and quota models, including weight-based limits.
• Strong preference for familiarity with high-performance networking concepts such as SR-IOV, kernel/network tuning, and exposure to RDMA or DPDK.

Responsibilities:

• Design low-latency infrastructure using cloud primitives and optimized configurations.
• Own and enhance cloud infrastructure performance setups.
• Build and run high-throughput, resilient connectivity patterns for exchange integrations.
• Drive security hygiene both on and off cloud with secrets management, network segmentation, and traffic isolation.
• Implement governance and best practices for the shared cloud platform to ensure safe multi-tenant operation.
• Deliver infrastructure as code using Terraform and Terragrunt, following our standards and workflows.
• Build and maintain CI/CD and automated testing for changes, minimizing risk in always-on markets.
• Implement and enhance observability using CloudWatch, Prometheus, Grafana, and similar tools.
• Participate in operational ownership through incident response, post-incident improvement, and continuous hardening.

Technologies:

• AWS
• CI/CD
• Cloud
• CloudWatch
• GCP
• Grafana
• Support
• Linux
• Network
• Prometheus
• Python
• RDMA
• Security
• Terraform
• DevOps

More:

We are Optiver, and we are building our Digital Assets trading capabilities within our Global Cloud Platforms team. Our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency, and acting as a stabilizing force in all market conditions. We operate a mature hybrid cloud infrastructure and are extending it to support a new, latency-sensitive, always-on trading environment. In this role, you will help build secure, performant, and resilient infrastructure that directly supports trading outcomes. You will join a culture of collaboration and excellence, working alongside curious thinkers and creative problem solvers in a supportive, high-performing environment. We offer a performance-based bonus structure, 27 paid vacation days plus all UK public holidays, daily breakfast and lunch, commuting support, private medical insurance, a pension scheme, ClassPass fitness membership, training and continuous learning opportunities, and international transfer opportunities for global career growth. We are committed to diversity and inclusion.

last updated 34 week of 2026