Systems Engineer

Tower Research Capital; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid working opportunities

Generous paid time off

Free meals and snacks

Wellness reimbursement

Sports & fitness events sponsorship

Volunteer opportunities

Company-sponsored social events

Job summary

Tower Research Capital is seeking an experienced Linux Infrastructure Engineer to maintain and optimize a high-performance Linux environment across on-prem and cloud data centers. You will implement automation, manage core services, and support 24/7 trading infrastructure with a focus on low-latency performance.

The role requires 5+ years in Linux operations, strong Python/Bash scripting skills, and AWS networking expertise.

Qualifications

• 5+ years of experience maintaining, operating and administering a Linux environment.
• Strong knowledge of Linux internals and OS principles.
• Experience with server-side networking and provisioning/automation tooling.
• Proficiency in Python and Bash for scripting and automation.
• Familiarity with CI/CD, version control and automated deployments.
• Experience with AWS and cloud networking for low-latency workloads.
• Comfort using AI in day-to-day activities.

Responsibilities

• Maintain, support, and enhance the firm's Linux infrastructure.
• Provide day-to-day Linux environment support, incident response, and troubleshooting.
• Develop and refine automation tools for provisioning, configuration, and monitoring.
• Manage core services (DHCP, LDAP, DNS, NFS) across on-prem and cloud data centers.
• Collaborate on cloud designs with Cloud Architecture team and improve cloud performance.
• Engage in on-call rotations including early mornings and weekends.

Skills

Linux Admin

Python scripting

Bash scripting

Automation (Ansible)

CI/CD

Networking

AWS (EC2/VPC)

Docker/Kubernetes

Education

Bachelor's in CS/Engineering

Tools

Ansible

Docker

Kubernetes

Job description

Tower Research Capital is a leading quantitative trading firm founded in 1998. Tower has built its business on a high-performance platform and independent trading teams. We have a 25+ year track record of innovation and a reputation for discovering unique market opportunities.

Tower is home to some of the world’s best systematic trading and engineering talent. We empower portfolio managers to build their teams and strategies independently while providing the economies of scale that come from a large, global organization.

Engineers thrive at Tower while developing electronic trading infrastructure at a world class level. Our engineers solve challenging problems in the realms of low-latency programming, FPGA technology, hardware acceleration and machine learning. Our ongoing investment in top engineering talent and technology ensures our platform remains unmatched in terms of functionality, scalability and performance.

At Tower, every employee plays a role in our success. Our Business Support teams are essential to building and maintaining the platform that powers everything we do — combining market access, data, compute, and research infrastructure with risk management, compliance, and a full suite of business services. Our Business Support teams enable our trading and engineering teams to perform at their best.

At Tower, employees will find a stimulating, results-oriented environment where highly intelligent and motivated colleagues inspire each other to reach their greatest potential.

Responsibilities

• Supporting, maintaining, and enhancing the firm’s trading Linux infrastructure
• Providing day-to-day support for the Linux environment including emergency responses, change executions, troubleshooting, and resolving performance issues
• Contributing to the development and refinement of tools and systems to automate provisioning, configuration, and monitoring of thousands of Linux servers
• Managing essential core services such as DHCP, LDAP, DNS, and NFS for on-prem and hosted data centers as well as public clouds
• Reviewing existing and implementing new designs for trading systems on the Cloud with the Cloud Architecture team
• Improving the performance, resilience, availability, and observability of existing Cloud environments
• Working in complex brownfield Cloud environments that host 24/7 critical trading infrastructure that is specifically optimized for high frequency, low latency, real-time processing using custom OS builds and highly specific Cloud platform configurations
• Engaging in a rotational on-call schedule, including early morning and weekend shifts, to provide timely support

Qualifications

• At least 5 years of experience in maintenance, operation, and administration of a sufficiently advanced Linux environment
• Comprehensive knowledge of operating system principles, with a particular focus on Linux internals
• Competence in server-side networking, including understanding network protocols and configurations
• Proficiency in developing automation and monitoring tools
• Experience with configuration management, provisioning, and orchestration tool (Ansible)
• Good knowledge of Python, expert knowledge of Bash for scripting and automation tasks in a Linux environment
• Understanding of Linux configuration management, source control, CI/CD, and automated deployment
• Experience of continuous improvement and/or refactoring of infrastructure automation to improve the stability, reliability and performance of the Cloud platforms in a fast moving environment that needs to remain responsive to trading team requirements
• Good problem-solving skills, underpinned by a methodical approach to technical challenges. This includes an ability to communicate effectively, demonstrating strong interpersonal skills, a sense of responsibility, and a commitment to driving projects to completion.
• Comfort using AI in day-to-day activities
• Strong expertise in AWS compute, networking and storage services (EC2, ENA, VPC, ELB, Direct Connect, S3, EBS) in the context of low latency performance engineering, including how Linux operating system and kernel components are specifically tuned for an EC2 environment and the AWS network

Preferred Qualifications

• Experience with container technologies such as Docker and/or Kubernetes
• Participation in open source or personal projects
• Certifications in AWS DevOps Engineer Professional, AWS Advanced Networking

Benefits

Tower’s headquarters are in the historic Equitable Building, right in the heart of NYC’s Financial District and our impact is global, with over a dozen offices around the world.

At Tower, we believe work should be both challenging and enjoyable. That is why we foster a culture where smart, driven people thrive – without the egos. Our open concept workplace, casual dress code, and well-stocked kitchens reflect the value we place on a friendly, collaborative environment where everyone is respected, and great ideas win.

Our benefits include:

• Generous paid time off policies
• Savings plans and other financial wellness tools available in each region
• Hybrid working opportunities
• Free breakfast, lunch, and snacks daily
• In-office wellness experiences and reimbursement for select wellness expenses (e.g., gym, personal training and more)
• Company-sponsored sports teams and fitness events (JPM Corporate Challenge, Cycle for Survival, Wall Street Rides FAR and more)
• Volunteer opportunities and charitable giving
• Social events, happy hours, treats, and celebrations throughout the year
• Workshops and continuous learning opportunities

At Tower, you’ll find a collaborative and welcoming culture, a diverse team and a workplace that values both performance and enjoyment. No unnecessary hierarchy. No ego. Just great people doing great work – together.

Tower Research Capital is an equal opportunity employer.