Manager, HR

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 t 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.

• 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.

• 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.

• 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.

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

• 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.

• 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, elevate issues effectively with carriers, and keep internal stakeholders informed without over complicating it.

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

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