Senior Linux Infrastructure Engineer

Company: tastytrade

Role: Senior Linux Infrastructure Engineer

Location: Chicago IL Hybrid

About the Role

We are looking for a senior Linux engineer who is equal parts operator and builder. You will own the systems layer of our production environment from the metal to the configuration management code. This is a hands-on role: you will jump into incidents tackle challenging engineering problems design systems that scale and evaluate new software and architectures.

This is not a role where the abstractions hide the machine. You are expected to be curious about what is underneath and to be the person other engineers come to when a system is behaving in a way nobody can explain.

What Youll Do

• Own Linux performance. Diagnose and tune systems under real production load: CPU scheduling and NUMA placement memory and page cache behavior disk and filesystem I/O and network stack tuning.

• Lead troubleshooting on hard problems. Work incidents methodically form a hypothesis find the cheapest test that falsifies it and narrow the search rather than changing five things at once. Write postmortems organize follow-up tasks and future-proof the environment so the same issue does not recur.

• Write and maintain configuration management code. Build infrastructure declaratively with Salt Ansible Chef or Puppet treating that code with the same standards as application code: reviewed tested and version-controlled.

• Run containerized workloads. Build deploy and operate services on Kubernetes or Nomad including scheduling behavior resource limits health checking and the failure modes that only appear under contention.

• Automate in Bash and Python. Replace manual runbooks with tooling and streamline repeatable work.

• Operate core network services. Troubleshoot TCP/IP with confidence and bring solid networking fundamentals. Manage DNS and DHCP as production services zone management resolver behavior TTL strategy scopes reservations and relay configuration.

• Operate the traffic and data tier. Configure and troubleshoot Nginx and HAProxy (routing TLS termination health checks connection handling) and support Redis and RabbitMQ in production.

• Manage virtualization. Provision and maintain guests across VMware Xen or KVM including capacity planning host maintenance and live migration.

• Handle secrets properly. Use Vault for secret storage dynamic credentials policy and rotation and help move the organization off whatever it was doing before.

• Own observability. Maintain log aggregation on the Elastic Stack and alerting through Nagios CheckMK or Icinga. Tune alerts toward signal; an alert nobody can act on is a bug.

• Work through change management and code review. Everything moves through Git and pull requests. You will review other peoples changes as seriously as you expect yours to be reviewed.

Who You Are

• 6 years in a Linux systems infrastructure or SRE role.

Expert-level Linux specifically:

• Performance analysis. You can go from a vague complaint to a named subsystem using the standard tooling perf strace ss iostat bpftrace or equivalents and explain what the numbers mean.

• Troubleshooting methodology. A disciplined hypothesis-driven approach that works on a system you have never seen before. We care more about how you narrow the problem than about which commands you happen to know.

• Systems fundamentals. Processes and signals systemd cgroups and namespaces filesystems and what actually happens when a host exhausts memory or file descriptors.

• Declarative configuration management at production scale Salt Ansible Chef or Puppet. You have authored and maintained the code not only run it.

• Containerization and orchestration. Production experience with Kubernetes or Nomad including the operational realities: scheduling resource pressure rollouts and debugging a workload that will not start.

• Scripting and automation. Strong Bash and working Python. You write code that other engineers can maintain.

• Foundational networking. Comfortable across layers VLANs and routing DNS DHCP TCP behavior and TLS and able to determine whether a problem is the application the host or the network.

• Proxy and load-balancing experience with Nginx or HAProxy.

• Virtualization experience with at least one of VMware Xen or KVM.

• Git and peer review as a daily habit including the discipline to keep changes reviewable.

• Excellent written communication. Runbooks design proposals and incident write-ups are a core part of this job not an afterthought.

• The ability to get productive quickly in areas where you do not yet have depth.

Preferred Qualifications

• Production ownership of Redis or RabbitMQ as a primary responsibility rather than a dependency.

• Vault administration policies auth methods and rotation at scale.

• Elastic Stack operations at volume: index lifecycle mapping decisions and cluster tuning.

• Experience in a regulated environment or anywhere downtime has a direct revenue cost.

• Colocation or bare-metal experience: hardware lifecycle remote hands and capacity planning against a finite footprint.

Company Perks Benefits:

• Performance Bonuses
• Stock Purchase Options
• Medical/Vision/Dental Benefits
• 401k Plan
• 20 Paid Vacation Days (plus anadditionalpaid vacationdaythe month of your birthday!)
• 10 Paid Sick Days
• Gym Membership Reimbursement
• Commuter Benefits
• Pet Insurance
• Wellness & Mental Health Programs
• Charitable Donation Matching
• Two Paid Volunteer Days Off
• Daily catered lunch when in the office
• Full kitchen with snacks and beverages
• In-building gym
• Shuttle to/from Metra

Base Salary Range:$140000-$180000 The actual salary offered will be based on the candidates level of experience and qualifications.

Discretionary Performance Bonus: 10-12% of base salary based on individual and company performance.

About IGNA tasty
IG North America is home to tastytradetastylive &tastyfxa family of brands built to democratize trading and empower individual investors. Founded in Chicago by the creators ofthinkorswimacquiredby London-based IG Group in 2021 we combine startup innovation with the backing ofaFTSE 100 fintechoperatingacross five continents serving over 1.3m customers and handling billions of dollars in transactions built on scale trust and proof.

From our headquarters in Chicagos Fulton Market our team builds award-winning trading platforms produces live financial education content daily and creates technology that makes complex markets accessible. tastytrade is our retail brokerage for self-directed investing and trading withtastyliveproviding content to educate our customers. tastyfx is the fastest-growing forex broker in the self-custody digital wallets for decentralized finance.

Werea lean collaborative team that values autonomy pragmatism and impact. Whetheryourebuilding technology creating content serving customers or supporting operationsyoullwork alongside people who are passionate about disrupting traditional finance and genuinely care about helping traders succeed. Our culture rewards initiative embraces experimentation and measures success by the value we create for our bar is high bring a curious and forward-thinkingmindsetandwellgive you the platform to define what comes next. Join us at IGtasty the future gets built here.

Location:Our office is in the West Loop - Chicagos growing center of tech great cuisine and high-end bars.

tastytradetastylive tastyfx
1330 W Fulton Market Chicago IL 60607

*Dont 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. Our team is dedicated to building a diverse inclusive and authentic workplace so ifyoureexcited about thisrolebut your experiencedoesntalign perfectly we encourage you to apply anyway. You may be just the right candidate for this or other roles!