Senior Software Engineer

Wintrust provides community and commercial banking, specialty finance and wealth management services through its 16 bank charters and nine non-bank businesses. Wintrust delivers the sophisticated solutions of a large bank while staying true to the relationship-focused, personalized service of our community banking roots. We serve clients in all 50 states with more than 200 branch banking locations in Illinois, southwestern Florida, northwestern Indiana, west Michigan and southern Wisconsin and commercial banking offices in Chicago, Denver, Milwaukee, Grand Rapids, Mich., and in key branch banking locations throughout Illinois. Our people are the heart of our business and we are proud to rank consistently as a top place to work. Wintrust is a $66 billion financial institution based in Rosemont, Illinois, and listed on the NASDAQ Global Select Market under the symbol “WTFC.”

Why join us?

• An award-winning culture! We are rated a Top Workplace by the Chicago Tribune (past 12 years) and Employee Recommended award by the Globe & Mail (past 6 years)
• Competitive pay and discretionary or incentive bonus eligible
• Comprehensive benefit package including medical, dental, vision, life, a 401k plan with a generous company match and tuition reimbursement to name a few
• Promote from within culture

Why join this team?

• This position has the opportunity to interface with and have a positive impact on multiple areas of Wintrust's business
• We hold ourselves accountable to high standards, share wins, operate ethically, and have fun
• Highly autonomous role, with the ability to make a significant impact
• Agile environment
• Great opportunity for career growth and development

Position Overview

The Senior Software Engineer (.NET) is a senior technical resource responsible for the architecture, design, development, and maintenance of enterprise applications primarily built on the Microsoft technology stack. This role leads solution design, converts business requirements into scalable system designs, and drives high-quality implementation across distributed systems.

This is a senior-level position that provides technical leadership for a pod of engineers (up to 5), ensuring delivery of robust, secure, and maintainable solutions. The role partners closely with architects, product owners, and cross-functional teams to deliver business-critical systems. Salesforce experience is strongly preferred in environments where .NET services integrate with or extend CRM workflows. This is a remote role, reporting directly to the Software Development Manager.

What You’ll Do

• Lead design and development of scalable, high-performance applications using C# and .NET (Core/Framework)
• Provide technical leadership to a team of 3–5 engineers including task assignment, mentoring, and code quality oversight
• Translate business and system requirements into technical designs, APIs, and services
• Drive architecture decisions including microservices, event-driven systems, and cloud-native patterns
• Design and implement integration layers between .NET systems and Salesforce (REST/SOAP APIs, middleware, event streaming)
• Write and review technical specifications, ensuring alignment with enterprise standards
• Conduct advanced code reviews and enforce best practices (SOLID, clean architecture, testability)
• Implement and maintain CI/CD pipelines, automated testing, and DevOps practices
• Collaborate with cross-functional teams including Salesforce developers, architects, and product owners
• Provide production support and lead root cause analysis for complex issues across distributed systems
• Participate in the full SDLC with strong emphasis on design, quality, and delivery

Qualifications

• 5 – 8 years of software engineering experience with strong focus on C# and .NET (Core preferred)
• Proven experience leading small engineering teams or pods
• Deep expertise in object-oriented design, design patterns, and distributed systems architecture
• Strong experience with RESTful API design, service orchestration, and integration patterns
• Solid understanding of database design (SQL Server, NoSQL a plus)
• Experience with CI/CD pipelines (Azure DevOps, GitHub Actions), automated testing, and DevOps practices

Salesforce (Preferred)

• Experience integrating .NET applications with Salesforce via REST/SOAP APIs, Platform Events, or middleware (e.g., Mulesoft)
• Familiarity with Salesforce data model, security model, and governor limits as they relate to external integrations
• Exposure to Apex, Flows, and Lightning components to effectively collaborate with Salesforce engineering teams
• Experience designing hybrid architectures (.NET services + Salesforce platform) for enterprise workflows
• Understanding of data synchronization patterns, error handling, and retry strategies across platforms
• Strong troubleshooting, performance tuning, and debugging skills across multi-system environments
• Effective communicator capable of working across business and technical teams
• Ability to operate in fast-paced environments with evolving requirements

Benefits

Medical Insurance

• Dental
• Vision
• Life insurance
• Accidental death and dismemberment
• Short-term and long-term Disability Insurance
• Parental Leave
• Employee Assistance Program (EAP)
• Traditional and Roth 401(k) with company match
• Flexible Spending Account (FSA)
• Employee Stock Purchase Plan at 5% discount
• Critical Illness Insurance
• Accident Insurance
• Transportation and Commuting Benefits
• Banking Benefits
• Pet Insurance

Compensation

The estimated salary range for this role is $117,000.00 - $158,000.00, along with eligibility to earn an annual bonus. Actual salaries may vary based on several factors, such as a candidate’s qualifications, skills and experience.

From our first day in business, Wintrust has been proud to serve a variety of unique communities and people from all walks of life. To build a company that reflects the communities we serve, we believe that fostering a unique and inclusive workplace where everyone feels valued and empowered to succeed will support our ongoing success. Wintrust Financial Corporation, including community banking and financial services subsidiaries, is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, disability, veteran status, genetic information, and other legally protected categories.