Head of Actuary

MGT Insurance•San Francisco, CA

33d•Hybrid

About The Position

MGT Insurance is seeking a Head of Actuarial to own both pricing and reserving for their AI-native commercial P&C carrier. This senior-most actuarial role reports to the Head of Insurance and involves setting actuarial strategy and hands-on model building for pricing, rate filings, and reserve estimates. The role has a dual mandate covering pricing (rate adequacy, rating plan design, filed rate changes) and reserving (loss reserve estimates, IBNR, reserve adequacy testing). The Head of Actuarial will also act as the actuarial voice for MGT's AI actuarial agent, ensuring actuarial soundness in pricing logic and risk selection signals embedded in the automated underwriting environment.

Requirements

10+ years of actuarial experience in commercial P&C insurance, with direct experience in both pricing and reserving.
Demonstrated experience owning rate filings and reserve estimates independently — not just supporting them.
Strong technical foundation: GLMs, loss development triangles, rate indication methodology, and reserve adequacy testing.
Experience working with state insurance department rate filing requirements and processes.
Ability to translate complex actuarial analysis into clear recommendations for underwriting, product, and executive stakeholders.
Comfortable operating as a build-from-scratch or small-team actuarial function — hands-on with the work, not just directing others.

Nice To Haves

FCAS or ACAS designation strongly preferred; candidates with substantial equivalent experience and progress toward fellowship will be considered.
Experience in small commercial or BOP lines specifically.
Experience integrating actuarial models into real-time underwriting or quoting systems — API-driven or AI agent environments.
Experience with reinsurance treaty structuring and loss pick development.
Proficiency in R, Python, or similar tools for actuarial modeling and analysis.

Responsibilities

Own MGT's pricing function including rate indications, rating plan design, rate filings, classification and territory relativities, and schedule rating logic across MGT's lines of business.
Own MGT's reserving function — quarterly reserve estimates, IBNR analysis, loss development studies, and reserve adequacy testing.
Serve as the actuarial sign-off for rate filings submitted to state insurance departments; partner with Legal and Compliance on regulatory rate justification.
Partner with Underwriting on rate adequacy by class, segment, and geography — flagging pricing inadequacy or opportunity as the book develops.
Serve as the actuarial SME for Athena, MGT's AI underwriting agent — validating that pricing logic, appetite signals, and risk scoring embedded into the platform are actuarially sound.
Own loss trend analysis and translate findings into pricing and underwriting guideline recommendations.
Partner with Finance on reserve-related financial reporting, statutory filings, and audit support.
Contribute actuarial perspective to reinsurance treaty structuring, submissions, and loss pick discussions.
Present pricing and reserving results to the Co-CEOs, board, and external stakeholders including reinsurers and auditors.
Build actuarial infrastructure; data pipelines, modeling standards, and documentation that scales as MGT's book grows.
Evaluate and incorporate new data sources and modeling techniques (including AI/ML-driven pricing approaches) into MGT's actuarial practice.