Senior Platform Engineer — Observability & Kubernetes

CJ; Chicago (IL); Hybrid; USD 112,000 - 172,000; Full time

Benefits offered by this job

401K matching

Wellness program

Medical coverage

Dental coverage

Vision coverage

Flexible time off

Paid holidays

Team-building events

Employee referral program

Recognition awards

Hybrid work arrangements

Parental bonding leave

Backup care

Employee discount

International SOS

Employee resource groups

Job summary

CJ is seeking a Senior Software Engineer to join the EngExp platform team, powering CJ's production systems across AWS regions. You will own reliability, set standards, and mentor engineers while shaping platform evolution.

You’ll work on multi-region Kubernetes, observability, CI/CD, and cost visibility, influencing design choices and driving incident resolution with a focus on long‑term improvement. Hybrid role: three days in-office.

Qualifications

• 6+ years of experience in software and/or infrastructure engineering.
• Deep, hands‑on production experience operating Kubernetes and AWS at scale, across multiple accounts and regions.
• Strong AWS networking judgment (VPC, peering, Transit Gateway, subnet/CIDR design)
• A track record as a critical reviewer - spotting subtle infrastructure issues and long‑term risks before they ship
• Experience leading technical work and mentoring engineers; can manage, clarify, and plan around uncertainty
• Effective communication and the ability to influence design in a product‑focused way

Responsibilities

• Own the reliability and operability of the systems above - focused on what is happening and why
• Establish and enforce platform standards: RBAC, admission webhooks, resource limits, LimitRanges, policy-as-code
• Manage infrastructure-as-code with Terraform across AWS accounts
• Act as a high‑quality reviewer of infrastructure changes - Terraform, Kubernetes configs, CI/CD pipelines, observability config - catching subtle issues and long‑term risks before they ship
• Turn recurring requests (ingress, DNS, service accounts) into self‑service workflows that are hard to misuse
• Drive resolution of platform incidents with a focus on learning and lasting system improvement
• Evaluate new patterns (Gateway API / Kgateway, claim‑based self-service) on tradeoffs, not hype
• Mentor less‑senior engineers and raise the team's depth in the components we own

Skills

Leadership

Mentoring

Communication

Critical thinking

Decision making

Education

Bachelor's degree or equivalent

Tools

Prometheus

Alertmanager

Grafana

OpenTelemetry

Kubernetes

AWS

EKS

Terraform

ArgoCD

Nexus

Docker

GitLab CI/CD

Vault

OpenCost

Job description

CJ is seeking a Senior Software Engineer to join the EngExp platform team, powering CJ's production systems across AWS regions. You will own reliability, set standards, and mentor engineers while shaping platform evolution.

You’ll work on multi-region Kubernetes, observability, CI/CD, and cost visibility, influencing design choices and driving incident resolution with a focus on long‑term improvement. Hybrid role: three days in-office.