Director of Reliability Engineering

Come join oneZero Financial Systems! An exciting, fast-growing company with Headquarters in Somerville, MA. oneZero empowers banks, brokerages and hedge funds with cutting edge trade routing and execution technology. Our platform, deployed with 200+ entities globally, features a low-latency trading environment, integrations to the world’s leading execution venues, and reliable IT infrastructure and technical support-all designed to be customized and scaled to serve any business model and any size of market participant. We take pride in our great work atmosphere and highly motivated team of engineers. We are currently looking for a motivated and talented Director of Reliability Engineering to join our Somerville office.

oneZero is proud to have been named one of Business Intelligence Group's Best Places to Work for four consecutive years: https://www.onezero.com/awards/onezero-earns-recognition-as-a-2025-best-place-to-work/

oneZero earns 2025 Great Place To Work Australia Certification: https://www.onezero.com/awards/onezero-earns-2025-great-place-to-work-australia-certification/

The Boston Globe names oneZero a Top Place to Work in 2022, 2023, and 2024: https://www.onezero.com/homepage/the-boston-globe-names-onezero-a-top-place-to-work-for-third-year-

The Role

oneZero provides the trading infrastructure that banks, brokers, and asset managers depend on around the clock. We are hiring a Director of Reliability Engineering to build our SRE team and lead reliability engineering across our global production environment.

You will work with engineering and operations leaders to identify the risks that matter most and turn those priorities into engineering work. You will have latitude to shape the team, choose its tools and practices, and decide where to invest first.

You will start with one SRE as a direct report, with plans to hire more in 2027. This is a hands-on leadership role: you will lead major incidents, investigate difficult production problems, and write or review automation while hiring and developing the team.

What You Will Do

• Build and lead the SRE team. Hire and develop engineers, set clear priorities, and give people the responsibility and support to do good work.
• Set the reliability agenda with engineering and operations leaders. Use production evidence to identify the most consequential risks, explain the trade-offs, and agree on what to address first.
• Lead the technical response to severe or complex incidents, especially when several teams are involved. Verify recovery, run blameless reviews, and follow through on the work needed to prevent recurrence.
• Work with service owners to establish useful service-level objectives, improve observability, test recovery paths, and make releases safer without slowing delivery unnecessarily.
• Improve on-call practices with the teams that support production. Reduce unnecessary paging, strengthen handoffs across time zones, and automate repetitive operational work.
• Make service health and production risk understandable to engineers, executives, and client-facing teams, including where decisions or investment are needed.

What You Will Bring

• At least eight years of experience engineering or operating critical production systems, including at least three years leading engineers or setting the technical direction of an SRE, platform, or comparable team.
• Evidence that your decisions have improved reliability. You can explain the problem, the trade-offs you made, and what changed as a result.
• Experience leading major incidents in distributed cloud systems, with the technical depth to investigate failures and the composure to guide others through recovery.
• The ability to write and review production automation, assess system designs, and work directly with engineers on difficult technical problems.
• Experience hiring and developing engineers, along with the ability to get work done across teams you do not manage.
• Clear communication about technical failures, business risk, and engineering trade-offs with engineers, executives, and clients.

Helpful Background

Experience building an SRE practice, supporting production across time zones, or working in trading, market data, or financial services would be useful. Our environment includes AWS, containers, infrastructure as code, CI/CD, and observability platforms such as Datadog. A degree in Computer Science, Engineering, or a related field is welcome; equivalent practical experience carries equal weight.

The salary range for this role is $180,000 - $220,000, depending on relevant experience.