Senior Software Engineer -P

Paychex

Cincinnati, Ohio; Rochester, New York; Irving, Texas; Salt Lake City, Utah; Tempe, Arizona; Saint Petersburg, Florida; West Palm Beach, Florida; Chicago, Illinois

Posted August 6, 2026

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Paychex is reimagining how businesses manage their workforce by bringing payroll, HR, benefits, and advisory services together into a single connected HCM platform. As Paychex and Paycor come together, we're combining innovative technology, data-driven insights, AI, and human expertise to help organizations work smarter, support their people, and achieve better business outcomes. This is an exciting time to join our team as we continue to invest in innovation, simplify client experiences, and shape the future of work. At Paychex, you'll have the opportunity to grow your career, make a meaningful impact, and be part of something bigger as One Paychex.

Overview

Do some people consider you an expert in application and database design? Do you stay on the cutting edge of technology? As a Senior Software Engineer in our Agile environment, your team will rely heavily on your serious coding skills and technical expertise. Your primary role includes system analysis, design, coding, testing, debugging, documenting, and installing portions of new systems and modification of existing systems. You will lead analysis activity and do high level architecture for an app feature. Your role is critical and we need you to bring energy to the team. Innovation is key for us and you'll be expected to influence your team with new technology tools and ideas. Also, because we are Agile, there will be times that you will be expected to step beyond traditional engineering duties to reach your teams definition of done.

Responsibilities

• Code and design new applications based upon detail specifications of business and user requirements.

• Lead the design and create documentation of solutions.

• High level architecture and analysis.

• Trouble shoot and make changes to prevent recurrence by modifying existing code and faulty files, writing and running special programs.

• Document new applications, or the changes made to existing applications.

• Participate in unit, integration, and business acceptance testing of the applications.

• Perform code reviews to ensure compliance of standards and quality.

• Troubleshoot application and system issues.

• Do whatever is necessary to get to your team's definition of done.

• Research, experiment and recommend emerging technologies.

Qualifications

• in Bachelor's in computer science, computer engineering or related field and 4+ years of experience or a Masters and 2+ years of experience in a related field - Preferred

• 2+ years of experience with SQL, Oracle or MySQL.

• Expertise in relational database concepts.

• Strong expertise in data storage technologies such as: Entity Framework, SQL, Oracle, MySQL, NoSQL (Hadoop, Mongo).

• 1+ years of experience with Cloud technologies (Azure, AWS etc.).

• 4+ years of Web Service development.

• Strong experience with patterns such as: REST, WCF and/or SOAP, Node.JS.

• 4+ years building Web Applications.

• Strong expertise in multiple front end frameworks (ASP.Net MVC or WebForms, Angular, React, ember, Knockout.JS.

• 2+ years of experience building automated unit tests utilizing frameworks like MS Test.

• Strong understanding of unit testing concepts and frameworks.

• Ability to be self-directed.

• Some experience in an Agile environment.

• Participation and familiarity with open source projects.

• Rely on experience and ju.

Live the Paychex Values

• Act with uncompromising integrity.

• Provide outstanding service and build trusted relationships.

• Drive innovation in our products and services and continually improve our processes.

• Work in partnership and support each other.

• Be personally accountable and deliver on commitments.

• Treat each other with respect and dignity.

What's in it for you?

• We value your well-being: We provide over 21 comprehensive rewards, including medical coverage, virtual wellness classes, tuition reimbursement, 401(k) + employer match, adoption assistance, financial assistance, and much more.

• We value your time: From paid time off to company holidays, culture days, and comprehensive work-life balance programs, we will ensure you have the flexibility you need to be your best.

• We value your development: Our award-winning training and development programs empower our employees with ongoing learning opportunities to give you the building blocks to grow your career.

• We value your perspective: Our company culture reflects the diversity of our employees. We want you to be you and your voice to be heard.

• We value our communities: We offer paid time off for volunteerism and promote many company-wide and local initiatives that benefit organizations you care about.

Note: The benefits described apply to full-time employees. Benefits for part-time, contract, and intern roles may vary.

Not sure if you meet every requirement?

At Paychex, we know that great talent comes in many forms. If you're passionate about the role but don't check every box, we still encourage you to apply. You might be the right fit - either for this position or another opportunity with us.

Paychex is an equal opportunity employer. We are committed to fostering a respectful and inclusive workplace where all individuals are treated fairly and evaluated based on their qualifications, experience, and merit. We comply with all applicable federal, state, and local laws prohibiting discrimination in employment.