When Maria Castellano joined Pinnacle Mutual’s rotational trainee program, she had a finance degree, a sharp analytical mind, and no idea that commercial underwriting would become her calling. Three years later, she leads a team evaluating complex property and casualty portfolios.
The rotational program didn’t just teach me underwriting — it showed me how every department connects. That perspective is what makes me a better leader today.
Maria Castellano
Finding the Right Fit
Maria’s first rotation placed her in personal lines, processing homeowner applications in a regional branch outside Philadelphia. The work was methodical — comfortable, even — but it was her second rotation in commercial underwriting that changed everything. She found herself drawn to the complexity of evaluating multi-location manufacturing risks, weighing loss histories against market conditions, and structuring coverage that actually protected businesses from catastrophic exposure.
By the end of her trainee year, she requested a permanent placement on the commercial desk. Her manager agreed without hesitation.
Mentorship That Mattered
Maria credits two factors for her rapid advancement. The first was a formal mentorship pairing with a senior underwriter who had twenty-five years of treaty reinsurance experience. Weekly one-on-ones turned into deep dives on risk appetite frameworks, pricing models, and the soft skill of explaining a declination without burning a broker relationship. The second was Pinnacle’s tuition reimbursement program, which covered her CPCU designation coursework in full.
- Completed CPCU designation within eighteen months while working full-time
- Mentored by a senior underwriter through weekly risk-review sessions
- Promoted to Lead Commercial Underwriter overseeing a mid-market book exceeding $40M in written premium
Today Maria manages a portfolio of mid-market accounts and mentors two junior underwriters of her own. She still remembers what it felt like to be the newest person on the floor — and she makes sure nobody on her team feels that way for long.
Insurance isn’t just about policies and premiums. It’s about the promise that someone will be there when things go wrong. That responsibility is what gets me out of bed.
