Senior Python Data Analyst Jobs in Watertown, WI

It Starts Here:

Santander is a global leader and innovator in the financial services industry and is evolving from a high-impact brand into a technology-driven organization. Our people are at the heart of this journey and together, we are driving a customer-centric transformation that values bold thinking, innovation, and the courage to challenge what's possible. This is more than a strategic shift. It's a chance for driven professionals to grow, learn, and make a real difference.

If you are interested in exploring the possibilities We Want to Talk to You!

The Difference You Make:

Santander's Corporate & Investment Banking (CIB) business is seeking an experienced PolyPath Market Risk Specialist with strong technical and business knowledge to support pricing, valuation, and market risk activities within a large banking or capital markets environment.

The ideal candidate will have deep expertise in PolyPath, strong hands-on programming skills in Python and Java, and solid knowledge of fixed income products, particularly structured products such as Mortgage-Backed Securities, Collateralized Mortgage Obligations, and other securitized fixed income instruments. Candidate should understand both the business side of market risk and the technical side of supporting large-scale financial systems. They should be comfortable working with traders, risk managers, quants, model teams, developers, and infrastructure teams.

This role requires someone who can work closely with front office, risk, finance, model, and technology teams to support risk models, valuation tools, pricing workflows, and market risk systems.

Key Responsibilities

• Support and enhance PolyPath platform capabilities used for pricing, valuation, trading, and market risk workflows.
• Partner with business, risk, model, and technology teams to translate complex market risk and fixed income requirements into scalable technical solutions.
• Support market risk processes including sensitivities, stress testing, scenario analysis, VaR, pricing, and valuation workflows.
• Work with fixed income and structured products, including:
  • Mortgage-Backed Securities
  • Collateralized Mortgage Obligations
  • Asset-backed or securitized products
  • Other structured fixed income instruments
• Develop, enhance, and troubleshoot applications, scripts, and integration components using Python and Java.
• Support pricing pipelines, risk data flows, market data integration, and valuation processes within the PolyPath ecosystem.
• Analyze system issues, performance bottlenecks, data discrepancies, and production incidents related to PolyPath and downstream risk systems.
• Collaborate with front office, risk, finance, infrastructure, and application development teams to ensure accurate and timely delivery of risk analytics.
• Support migration, modernization, and integration initiatives involving legacy trading or risk systems and PolyPath architecture.
• Improve platform stability through automation, monitoring, alerting, and issue resolution processes.

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What You Bring:
To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Education:

• Bachelor's Degree: in related field or equivalent demonstrated through a combination of work experience, training, military service, or education - Required

Qualifications:

• Expert-level knowledge of PolyPath.
• Strong experience in market risk, preferably within banking or capital markets.
• Strong programming skills in Python and Java.
• Solid understanding of fixed income products, pricing, valuation, and risk analytics.
• Experience supporting risk models, valuation tools, pricing engines, or market risk platforms.
• Ability to troubleshoot complex system, data, and pricing issues across multiple technology platforms.
• Strong analytical skills with the ability to explain technical and market risk concepts clearly to both business and technology teams.
• Experience working in a large banking, financial services, or regulated financial institution environment.
• 10+ years of experience in banking, capital markets, financial technology, or market risk technology preferred.

Preferred Qualifications

• Experience working directly with front office, market risk, finance, model validation, or quantitative teams.
• Strong knowledge of structured fixed income products, especially:
  • MBS
  • CMO
  • ABS
  • Securitized products

• Understanding of:
  • Pricing
  • Valuation
  • Sensitivities
  • Stress testing
  • VaR
  • Scenario analysis
  • Yield curves
  • Risk factors
  • Market data

• Experience with system integration using APIs, messaging frameworks, batch processes, or data pipelines.
• Experience supporting real-time or high-volume capital markets platforms.
• Strong production support, issue management, and root-cause analysis experience.

It Would Be Nice For You To Have:

• Established work history or equivalent demonstrated through a combination of work experience, training, military service, or education.

Work Authorization & Sponsorship:
Applicants must be legally authorized to work in the United States on a full-time basis without requiring employer sponsorship to commence employment.

What Else You Need To Know:

The base pay range for this position is posted below and represents the annualized salary range. For hourly positions (non-exempt), the annual range is based on a 40-hour work week. The exact compensation may vary based on skills, experience, training, licensure and certifications and location.

Base Pay Range:

Minimum:

We Value Your Impact:

Your contribution matters and it's recognized. You can expect a fair and competitive rewards package that reflects the impact you create and the value you deliver. We know rewards go beyond numbers. Offering more than just a paycheck our benefits are designed to support you, your family and your well-being, now and into the future. Santander Benefits - 2026 Santander OnGoing/NH eGuide (foleon.com)

Risk Culture:

We embrace a strong risk culture and all of our professionals at all levels are expected to take a proactive and responsible approach toward risk management.

EEO Statement:

At Santander, we value and respect differences in our workforce. We actively encourage everyone to apply. Santander is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, genetics, disability, age, veteran status or any other characteristic protected by law.
Working Conditions:

Frequent minimal physical effort such as sitting, standingand walking is required for this role. Depending on location, occasional moving and lifting light equipment and/or furniture may be required.

Employer Rights:

This job description does not list all of the job duties of the job. You may be asked by your supervisors or managers to perform other duties. You may be evaluated in part based upon your performance of the tasks listed in this job description. The employer has the right to revise this job description at any time. This job description is not a contract for employment and either you or the employer may terminate your employment at any time for any reason.

What To Do Next:

If this sounds like a role you are interested in, then please apply.

We are committed to providing an inclusive and accessible application process for all candidates. If you require any assistance or accommodation due to a disability or any other reason, please contact us at TAOps@santander.us to discuss your needs.