Senior Site Reliability Engineer (Linux Systems & Application Observability)

• As our first Senior Site Reliability Engineer, you’ll harden the systems behind order execution and market data delivery — designing for fault tolerance, closing gaps in our telemetry, and making sure our HashiCorp Nomad-based
  service fabric scales cleanly as trading volume grows
• You’ll work embedded alongside our infrastructure and application engineering teams, contributing directly to our Ruby, Java, and Elixir services.
• This is a rare opportunity to shape a practice and a culture from day one, on a platform where every order, quote, and position has to be right, because real client capital is on the line.
• Build self-healing, fault-tolerant infrastructure and internal tooling that automates repetitive
  operational work and reduces toil for Platform and Application teams
• Run gap analysis across our observability stack to find blind spots in telemetry, logging, and alerting
  coverage, then close them so failures surface before customers feel them
• Own scalability work across our HashiCorp Nomad service fabric: capacity planning, load testing,
  and identifying architectural bottlenecks before they become incidents
• Extend our observability stack (Prometheus, Honeycomb, OpenTelemetry) with the instrumentation
  needed to actually see the failure modes above
• Set SLOs and error budgets with multi-window burn-rate alerting for critical brokerage flows, once
  the fault-tolerance and telemetry foundation is in place
• Mentor engineers across teams to build a culture of site reliability champions so the practice outlives
  any one person

Benefits

• 3 Medical Plans Choice
• Dental & Vision Benefits
• Generous Paid Time Off
• Paid Holidays - All Market Holidays Off
• 401(k) with Company Match
• Generous Parental Leave
• Disability Leave & Disability Insurance
• Commuter Benefits
• Pet Insurance
• Stock Purchase Options
• Wellness & Mental Health Programs
• Subsidized Engineering Training Program
• Performance Bonuses
• Charitable Donation Matching
• Gym Membership Reimbursement
• Healthcare FSA
• Two Paid Volunteer Days Off
• Fully-stocked Kitchen with Snacks and Drinks
• Onsite Gym
• Casual Dress
• Sustainable Work Day
• CTA stop a block away, Shuttle to/from Metra
• Shared rooftop with greenery overlooking the city
• West Loop Location - Chicago’s Tech Center
• Daily Catered Lunch- Strong programming skills in a language such as Python, Ruby, Java, or similar
• Deep understanding of one or more: distributed systems, Linux systems, cloud-native architectures, containerization
• Hands-on experience designing fault-tolerant, self-healing distributed systems — not just describing the patterns, but having shipped them
• Experience running gap analyses on observability/telemetry systems: identifying what’s not instrumented, not alerted on, or not visible until it’s too late
• A track record scaling systems under real production load, including capacity planning and architectural bottleneck identification
• Hands-on experience with OpenTelemetry, Prometheus, and Grafana, with the ability to instrument services directly
• Strong Linux internals and networking fundamentals, including TCP/IP, UDP/multicast, packet capture, and flow analysis
• On-call experience on production systems and comfort building a blameless post-incident review process
• Working knowledge of SLOs and error budgets as a tool, not the job description; HashiCorp Nomad, Consul, or Vault experience is a strong plus
• Don’t meet every single requirement? Studies have shown that women and people of color are less likely to apply to jobs unless they have every single qualification