Network Reliability Engineer Jobs in Lisle, IL (NOW HIRING)

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Team Overview

At TransUnion, this role will report to a DevOps Director. The Site Reliability Engineering team drives reliability strategy, elevates engineering standards, and owns some of the most complex and consequential work on the platform.

As a Staff Site Reliability Engineer at TransUnion, you will serve as a senior technical leader and force multiplier on the SRE team. Operating with full autonomy, you will drive reliability strategy, lead high-risk technical initiatives, and set the engineering standards that elevate the entire team. You’ll bring deep expertise across GCP, Kubernetes, CI/CD pipelines, and monitoring platforms — contributing to strategic decisions on major platform components while fully participating in on-call rotation. Whether stepping in to lead the team, owning complex capacity and security work, or anchoring incident response with calm and maturity, your impact will be felt across the platform and the people around you.

This is a hybrid position and involves regular performance of job responsibilities virtually as well as in-person at an assigned TU office location for a minimum of two days a week.

Role Overview and Core Responsibilities

Technical Leadership & Strategic Influence

• Recognized expert across multiple systems; actively contributes to architectural and strategic decisions around major platform components.
• Leads research, testing, implementation, and continuous improvement for new systems and tooling.
• Performs complex, high-impact work including capacity planning, load testing, and security improvements.

Operational Excellence & On-Call

• Fully participates in the team’s on-call rotation; models calm, effective, and blameless incident response.
• Serves as a significant technical contributor during major incidents and problem resolution.
• Plans and leads high-risk maintenance events with minimal to no customer impact.

Standards & Team Elevation

• Elevates team standards through new tooling, processes, procedures, and effective communication.
• Capable of stepping in to lead and represent the team — a trusted resource during transitions or coverage gaps.
• Sets new professional benchmarks in technical quality, engineering culture, and cross-functional collaboration.

Required Knowledge and Experiences

• 5+ years of experience in Cloud Architecture, Site Reliability Engineering, Platform Engineering, or related fields — with a proven track record of designing and delivering at enterprise scale.
• Deep, hands-on expertise with Google Cloud Platform (GCP) and Kubernetes (K8s) — running high-volume, high-availability workloads with 99.999% reliability targets.
• Mastery of CI/CD pipeline architecture — designing end-to-end delivery systems that are fast, safe, and built for scale.
• Expert-level command of monitoring, observability, and alerting platforms (e.g., Datadog, Prometheus, Grafana, PagerDuty) — you define what good looks like.
• Deep Linux expertise — from kernel internals and system performance tuning to hardening and troubleshooting at the OS level in production environments.
• Strong command of database architecture — including relational (PostgreSQL, MySQL, Cloud SQL) and NoSQL (Bigtable, Firestore, Redis) systems, with experience designing for high availability, replication, failover, and performance at scale.
• Advanced networking knowledge — including VPCs, subnets, DNS, load balancing, firewall rules, VPNs, private service connect, and hybrid connectivity patterns across cloud and on-prem environments.
• Proven expertise in Infrastructure-as-Code (IaC) — designing and enforcing scalable, reusable frameworks using Terraform, Pulumi, or equivalent tools.
• Strong proficiency in scripting and automation (e.g., Python, Bash, Go) — building the tools and workflows that eliminate toil and accelerate delivery.
• Hands-on experience designing and integrating AI/ML-powered solutions into cloud-native platforms — including familiarity with LLM orchestration, vector databases, model serving infrastructure, and AI observability — with the ability to evaluate emerging tools and translate them into reliable, production-grade capabilities.

Benefits that support every part of your life:

At TransUnion, we design benefits to help you feel well, do well, and plan well—from day one.

For Your Health: Enjoy day-one eligibility for medical, dental, and vision coverage, plus supplemental plan options. Spousal, domestic partner, and other eligible dependent coverage is available on select plans. Choose tax‑advantaged HSA and FSA accounts to make everyday care more affordable.

For Your Protection: We’ve got your back with company‑paid basic life and AD&D, optional voluntary life and AD&D for you and your family, and short‑ and long‑term disability. You can also opt into a legal plan, pet insurance, and travel accident coverage.

For Your Family: From adoption assistance and fertility planning coverage to caregiver support, we’re here for every chapter. Access Dependent Care FSA for possibility of an employer match, a complimentary Care@Work membership, and up to 12 weeks of paid parental leave with eligibility for a thoughtful, gradual return.

For Your Future: Build toward what’s next with our 401(k) with employer match and Employee Stock Purchase Plan (ESPP). Tap financial wellness resources, career coaching, and optional long‑term care insurance to plan confidently.

For You: Grow and recharge with tuition reimbursement, flexible time off for exempt employees or paid time off for nonexempt employees, up to 12 paid holidays per year, commuter benefits, employee discounts, charitable gift matching, and paid volunteer time off, plus corporate volunteer events that make it easy to give back.

For Your Wellness: Access 24/7 support including professional therapy, coaching, and emotional well‑being programs alongside guided meditation and resources that support physical, mental, social, and financial wellness.

We are committed to being a place where diversity is not only present, it is embraced. As an equal opportunity employer, all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability status, veteran status, genetic information, marital status, citizenship status, sexual orientation, gender identity or any other characteristic protected by law. Additionally, in accordance with Section 503 of the Rehabilitation Act of 1973 and the Vietnam Era Veterans’ Readjustment Assistance Act of 1974, TransUnion takes affirmative action to employ and advance in employment qualified individuals with a disability and protected veterans in all levels of employment and develops annual affirmative action plans. Components of TransUnion’s Affirmative Action Program for individuals with disabilities and protected veterans are available for review to any associate or applicant for employment upon request by contacting ERCoE@transunion.com.

Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable law, including the Los Angeles County Fair Chance Ordinance for Employers, the San Francisco Fair Chance Ordinance, Fair Chance Initiative for Hiring Ordinance, and the California Fair Chance Act.

Adherence to Company policies, sound judgment and trustworthiness, working safely, communicating respectfully, and safeguarding business operations, confidential and proprietary information, and the Company’s reputation are also essential expectations of this position.

Pay Scale Information:

The U.S. base salary range for this position is $112,500.00 - $187,500 annually. *The salary range for this position reflects a reasonable estimate of the range of compensation for this job. At TransUnion, actual compensation is based on careful consideration of additional factors such as (but not limited to) an individual’s education, training, work experience, job-related skill set, location, and industry knowledge, as well as the scope and responsibilities of the position and market considerations. Regular, fulltime non-sales positions may be eligible to participate in TransUnion’s annual bonus plan. Certain positions may be also eligible for long-term incentives and other payments based on applicable company guidance and plan documents.

TransUnion Overview:

At TransUnion, we encourage and are committed to creating a real, positive impact and shared sense of purpose within our Workforce for Good, which empowers our people to grow, innovate and contribute to a better future for our communities and customers. We strive to build an environment where our associates are in the driver’s seat of their professional development— while having access to help along the way. We recognize that success comes when our associates thrive both professionally and personally; that’s why we prioritize work/life flexibility and offer resources for our teams across the globe to collaborate and drive excellence.

Be a part of our Workforce for Good – you’ll work with great people, pioneering products and cutting-edge technology.

TransUnion's Internal Job Title:

Architect, Development Ops

Company:

TransUnion LLC