Manager, HR Benefits

T1 Energy is bringing solar manufacturing back to the U.S. by building a domestic solar supply chain. Our mission is to invigorate America with scalable, reliable, and low-cost energy. Our fully operational 5GW solar module facility in Wilmer, Texas, can manufacture more than 20,000 modules every 24 hours. By the time you finish reading this paragraph, we will have produced two solar panels that will power American homes and fuel domestic AI. We're focused on building advanced American manufacturing and we're passionate about engineering a better future filled with abundant energy.

T1 Energy is looking to hire a Manager, HR Benefits to own the full benefits function for a fast-growing manufacturing company. This is not a hand-it-off-to-a-broker role. This is a hands-on, operational position for someone who knows benefits administration from the inside out: plan setup, carrier feeds, billing reconciliation, open enrollment, compliance, and everything in between.

You'll be the system of truth for benefits at T1. That means the data is right, the feeds are running, the invoices match, and employees get answers, not runarounds. If you've built or run a benefits operation in a high-growth environment, thrive on process and precision, and take genuine pride in a clean reconciliation and a well-run open enrollment, this role was made for you.

What You'll Do

Plan Administration & Eligibility

• Administer all benefit plans: medical, dental, vision, FSA/HSA, COBRA, life/AD&D, disability, supplemental, 401k, and executive plans, and manage enrollments, terminations, and qualifying life event changes in UKG Pro.

• Maintain accurate eligibility and coverage records as the authoritative system of truth, and reconcile enrollment data against carrier records on a regular cadence.

Carrier Feeds & Billing

• Monitor that scheduled carrier feeds transmit successfully, read and work carrier acknowledgments (999/TA1), and catch discrepancies before they become coverage problems.

• Reconcile self-bill lines against carrier invoices, verify enrolled headcount matches what's billed, and research and resolve billing variances with precision and urgency.

Vendor Management & Employee Support

• Serve as the primary point of contact with carriers and vendors, coordinate issue resolution, and keep policy numbers, contacts, and plan details current at all times.

• Field employee benefits questions, own the escalation path when coverage doesn't match enrollment, and coordinate corrections with carriers on the employee's behalf — making sure people get the coverage they're entitled to without having to fight for it.

Open Enrollment

• Plan and execute open enrollment each plan year, including plan setup, employee communications, and post-enrollment validation to ensure a clean, accurate result.

Compliance, Documentation & Tracking

• Maintain SOPs, process documentation, and current plan documents so operations don't live in one person's head and changes are clearly communicated to stakeholders.

• Own the benefits tracker and status documentation, run a regular review cadence on open items, and track plans outside automated scope separately to ensure nothing falls through the cracks.

Who You Are

• Operationally sharp and detail-obsessed, you know that a single enrollment error or missed carrier feed can turn into a real problem for a real person, and you build systems that prevent that.

• Deeply familiar with UKG Pro and how benefits administration works inside an HRIS, not just around it.

• Comfortable owning the full benefits function independently, you don't need a team of specialists to hand things off to; you are the specialist.

• Calm and precise under the pressure of open enrollment, billing deadlines, and executive plan coordination all happening at once.

• A strong communicator who can explain benefits clearly to employees, escalate issues effectively with carriers, and keep internal stakeholders informed without overcomplicating it.

• Process-minded and documentation-driven, you believe that if it isn't written down, it isn't sustainable.

Qualifications

• 5+ years of benefits administration experience, with demonstrated ownership of the full benefits function in a mid-size or growing company.

• Hands-on experience administering benefits in UKG Pro is required.

• Deep working knowledge of medical, dental, vision, FSA/HSA, COBRA, life/AD&D, disability, 401k, and supplemental plan administration.

• Experience monitoring and troubleshooting carrier EDI feeds, including reading and working 999/TA1 acknowledgments.

• Proven experience with self-bill reconciliation and carrier invoice management.

• Solid understanding of benefits compliance requirements including ACA, ERISA, HIPAA, and COBRA.

• Strong documentation skills; you write SOPs that other people can actually follow.

• High attention to detail and a track record of keeping enrollment data clean and audit-ready.

• Bachelor's degree in Human Resources, Business, or a related field preferred.

The T1 Way

We move fast, expect accountability, and treat people with respect. We also have a no-jerks policy: we don't tolerate big egos, bad behavior or "that's not my job attitude". Be sharp, be honest, be human. If you can hold the line and have a sense of humor, you'll fit right in.

T1 Energy is an Equal Opportunity Employer. We are committed to creating an inclusive environment for all employees and applicants and do not discriminate on the basis of any legally protected characteristics.