Sr Actuarial Associate, Enterprise Catastrophe Risk

As a team member in Finance at Nationwide, a Fortune 100 company with nearly $70 billion in annual sales, the opportunities are endless! Let Nationwide help create your career journey! At Nationwide®, “on your side” goes beyond just words. Our customers are at the center of everything we do and we’re looking for associates who are passionate about delivering extraordinary care. Sr Actuarial Associate, Enterprise Catastrophe Risk Nationwide’s Catastrophe Risk Modeling team serves as a specialized enterprise capability focused on understanding and quantifying catastrophe exposure across physical property portfolios and weather-related risk scenarios. The team combines catastrophe analytics, actuarial analysis, and risk modeling to help the business better understand risk and support more informed decisions across the enterprise. Reporting to the Director, Catastrophe Risk Modeling this role is a strong opportunity for a data-driven actuarial professional who enjoys working at the intersection of catastrophe research, analytics, and actuarial modeling. This role will help strengthen how catastrophe-related models and analyses are developed, validated, and interpreted so the team can produce high-quality analytics and more actionable insight for business partners. This is a compelling fit for someone who likes hands-on analytical work, enjoys solving modeling and analytical challenges, and wants to contribute to a team that turns complex risk data into meaningful business value. Key Responsibilities

• Support catastrophe risk research, actuarial analysis, and model development tied to physical property, weather, and catastrophe exposure data.
• Build, enhance, and validate catastrophe risk models and analytical processes that support research, modeling, and reporting use cases.
• Use tools such as SQL, Python, R, Databricks, and Snowflake to support actuarial analysis, model development, validation, and reporting.
• Support model validation and reporting workflows that help ensure outputs are accurate, consistent, and decision-useful.
• Contribute to model improvement and process automation efforts that make catastrophe analytics more efficient, scalable, and impactful. Qualifications
• Bachelor’s degree in a quantitative field such as data science, statistics, mathematics, actuarial science, computer science, engineering, finance, or a related discipline.
• ACAS level actuary credential required; additional progress toward FCAS credential preferred
• Previous professional experience in P&C pricing or reserving position (catastrophe modeling specific experience highly preferred)
• Strong SQL capability and working proficiency in Python and/or R.
• A naturally curious, detail-oriented approach, with the judgment to question results, investigate discrepancies, assess model reasonableness, and improve the quality of outputs. This role does not qualify for employer sponsored work authorization. Nationwide does not participate in the

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extension program. It is our intention to fill this role in Columbus, OH. However, applications from candidates working remotely who bring critical industry skills and relevant experience may be considered. #LI-KD1 Compensation Grade:H5 Job Description Summary Do you have the desire to analyze data and perform groundbreaking research to drive business outcomes? Nationwide has been using data to serve our members and drive business outcomes for almost 100 years. Our industry-leading workforce adopts an agile work environment and a collaborative culture to deliver outstanding solutions and results. Our Risk Analytics Researchers play a key role in harnessing the power of data to deliver business results. Specifically, they are responsible for modeling sophisticated problems, discovering insights, and identifying business opportunities from data using a variety of techniques from mathematics, actuarial studies, statistics, data science, and financial engineering. As a Senior Consultant, you’ll lead projects associated with the design, development and application of unique risk models. You’ll need an understanding of strategic business objectives and will work with business partners across the organization to develop solutions to pressing business needs. We’ll count on you to be a subject matter authority in Nationwide’s risks. It’s imperative that you are fully proficient with basic and sophisticated mathematical, statistical, and analytical techniques associated with risk modeling. Job Description Key Responsibilities:

• Researches and implements financial engineering, data science and statistical techniques for risk management and business applications.
• Creates and tests risk limits to provide guidance on asset allocation, risk transfer, and product growth decisions.
• Owns all facets of complex quantitative modeling processes. Ensures models align with industry standards.
• Consults and collaborates to ensure model assumptions, processes, and outputs are well understood and that modeling standard methodologies are upheld throughout the organization.
• Reviews and analyzes model output to identify model limitations and their impact. Mitigates model limitations with the adaptation of appropriate, corrective quantitative methods.
• Creates and owns model documentation for rationale, assumptions and business continuity.
• Consults and develops creative and innovative solutions to support strategic business problems.
• Acts as the technology owner for risk analytics. May perform other responsibilities as assigned. Reporting Relationships: Reports to Risk/Actuarial leader. Typical Skills and Experiences: Education: Undergraduate studies in finance, accounting, economics, statistics, mathematics or related subject area required. Graduate-level studies in a related field with advanced degree highly desirable. License/Certification/Designation: Progress toward FCAS, FSA, CQF, CFA or similar preferred. Experience: Typically, seven or more years of related work experience in financial risk modeling or actuarial functions. Knowledge, Abilities and Skills: Strong understanding of machine learning, stochastic processes, Monte Carlo simulations, sampling methods and other statistical techniques applicable to specialized risk modeling. Proven mathematical knowledge of specialized risk models such as those used in hedging, economic scenario generation, catastrophe, credit risk, etc. Advanced understanding of risk management operations such as asset-liability management, portfolio risk assessment, hedging, etc. Sophisticated written and verbal communication skills. Advanced proficiency with Excel and common statistical software such as R, SAS, Python, or MATLAB. Other criteria, including leadership skills, competencies and experiences may take precedence. Staffing exceptions to the above must be approved by the hiring manager’s leader and Human Resources Business Partner. Values: Regularly and consistently demonstrates Nationwide Values. Job Conditions: Overtime Eligibility: Not Eligible (Exempt) Working Conditions: Normal office environment. ADA: The above statements cover what are generally believed to be principal and essential functions of this job. Specific circumstances may allow or require some people assigned to the job to perform a somewhat different combination of duties. We currently anticipate accepting applications until 10/08/2026. However, we encourage early submissions, as the posting may close sooner if a strong candidate slate is identified before the deadline. Benefits We have an array of benefits to fit your needs, including: medical/dental/vision, life insurance, short and long term disability coverage, paid time off with newly hired associates receiving a minimum of 18 days paid time off each full calendar year pro-rated quarterly based on hire date, nine paid holidays, 8 hours of Lifetime paid time off, 8 hours of Unity Day paid time off, 401(k) with company match, comp