London – Hybrid
Quant Capital is working with a global market-making firm looking for a senior infrastructure to lead the buildout and evolution of its trading platform across cloud and on-prem environments. This is a senior technical leadership role with full ownership of infrastructure strategy, delivery, and scale across low-latency trading systems.
This hire will drive a major AWS migration, build greenfield environments, modernise legacy systems, and shape the long-term engineering roadmap. You’ll lead a small but senior infrastructure function with real autonomy and impact.
The Role
* Own infrastructure architecture across cloud, on-prem and hybrid platforms
* Lead end-to-end AWS migration and modernisation strategy
* Build greenfield environments for trading and research workloads
* Design and operate highly available, low-latency global infrastructure
* Take ownership of Microsoft services, Active Directory and core networking
* Engineer secure connectivity across firewalls, routing and multi-site links
* Drive network security, segmentation and access control strategy
* Lead and grow a high-performing infrastructure/DevOps team
* Partner closely with engineering, trading and risk functions
* Automate provisioning and deployment with IaC (CloudFormation/Terraform/Ansible)
* Scale monitoring, cost optimisation and system reliability in production
Background
* 7+ years in infrastructure within trading, market-making or high-performance engineering environments
* Strong AWS architecture and hybrid (cloud + on-prem) experience
* Deep networking background: routing, switching, low-latency connectivity
* Strong understanding of reliability engineering and autoscaling systems
* Prior experience building and scaling teams in high-performing environments
* Confident interacting with technical and trading leadership
Core Skills
* AWS (VPC, IAM, S3, ECS/EKS, Direct Connect, Transit Gateway, CloudFormation)
* Networking: BGP, OSPF, MPLS, VLANs, VPNs, SD-WAN
* Firewalls and network security (Cisco ASA, Fortinet or similar)
* Linux and Windows systems engineering
* Microsoft services and identity (AD/Entra ID)
* CI/CD (GitLab CI or similar)
* IaC and automation (CloudFormation, Ansible, Terraform)
* Monitoring/Observability (CloudWatch, Prometheus, Grafana)
* Scripting (Python, Bash)
This is a fantastic opportunity for a Senior Infrastructure Engineer with some light management and leadership skills to step into a Head role for a growing but small team and within a fast-paced market making business.
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