# Senior Linux Infrastructure Engineer

**Company:** [tastytrade](https://hotfix.jobs/companies/tastytrade)
**Location:** Chicago, IL
**Role:** DevOps / SRE
**Salary:** $140k – $180k/yr
**Experience:** 6+ years
**Skills:** Linux, Salt, Ansible, Chef, Puppet, Kubernetes, Nomad, Bash, Python, DNS, Dhcp, Nginx, Haproxy, VMware, Vault
**Posted:** 2026-09-02

> Own and improve the Linux production infrastructure layer, from performance tuning and incident response to configuration management, orchestration, networking, virtualization, secrets, and observability. The role requires 6+ years of infrastructure or SRE experience and deep Linux expertise.

## Job Description

## Responsibilities
- Diagnose and tune Linux systems under production load, including CPU scheduling, NUMA, memory, page cache, disk and filesystem I/O, and network performance.
- Lead incident troubleshooting using hypothesis-driven investigation; write postmortems and track preventative follow-up work.
- Build and maintain reviewed, tested, version-controlled configuration management code with Salt, Ansible, Chef, or Puppet.
- Build, deploy, and operate containerized workloads on Kubernetes or Nomad.
- Automate operational work with Bash and Python.
- Operate DNS and DHCP services, including zones, resolvers, TTLs, scopes, reservations, and relays.
- Configure and troubleshoot Nginx and HAProxy, including routing, TLS termination, health checks, and connection handling.
- Support Redis and RabbitMQ in production.
- Provision and maintain virtual machines using VMware, Xen, or KVM, including capacity planning, host maintenance, and live migration.
- Manage Vault secrets, dynamic credentials, policies, and rotation.
- Maintain Elastic Stack log aggregation and Nagios, CheckMK, or Icinga alerting.
- Follow Git-based change management and peer review practices; create runbooks, design proposals, and incident write-ups.

## Requirements
- 6+ years of experience in Linux systems, infrastructure, or SRE roles.
- Expert Linux knowledge, including performance analysis with tools such as perf, strace, ss, iostat, or bpftrace.
- Strong understanding of processes and signals, systemd, cgroups, namespaces, filesystems, memory exhaustion, and file descriptors.
- Production-scale declarative configuration management experience with Salt, Ansible, Chef, or Puppet.
- Production containerization and orchestration experience with Kubernetes or Nomad.
- Strong Bash and working Python skills.
- Networking fundamentals across VLANs, routing, DNS, DHCP, TCP, and TLS.
- Proxy and load-balancing experience with Nginx or HAProxy.
- Virtualization experience with VMware, Xen, or KVM.
- Daily experience with Git and peer review.
- Excellent written communication and ability to become productive quickly in unfamiliar areas.

## Nice-to-haves
- Primary production ownership of Redis or RabbitMQ.
- Vault administration, including policies, authentication methods, and rotation at scale.
- Elastic Stack operations at volume, including index lifecycle, mappings, and cluster tuning.
- Experience in regulated environments or systems where downtime has direct revenue impact.
- Colocation or bare-metal experience, including hardware lifecycle, remote hands, and finite-footprint capacity planning.

## Compensation and Benefits
- Base salary: **$140,000–$180,000** annually.
- Discretionary performance bonus: **10–12% of base salary**.
- Stock purchase options.
- Medical, vision, and dental benefits.
- 401(k) plan.
- Paid vacation, sick time, gym membership reimbursement, commuter benefits, pet insurance, wellness and mental health programs, charitable donation matching, and paid volunteer days.
- Catered lunches, office kitchen, in-building gym, and Metra shuttle when working from the office.

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