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Principal Software Engineer (Payment Solutions)
Overland Park, KSMarch 20th, 2026
Company Overviewu00A0u00A0 u00A0 Shamrock Trading Corporation is the parent company for a family of brands in transportation services, finance and technology. Headquartered in Overland Park, KS, Shamrock is frequently recognized among the u201CBest Places to Worku201D in Kansas City and Chicago and was most recently recognized as one of Americau2019s top 100 u201CMost Loved Workplacesu201D by Newsweek. We also have offices in Atlanta, Chicago, Dallas, Ft. Lauderdale, Houston, Laredo, Nashville, Philadelphia and Phoenix. Overland Park is a great place to live, work and play, being conveniently located within driving distance of everything Kansas City has to offer. Housed within the heart of Overland Park, our offices include 4 gorgeous towers on the East and West sides of Metcalf Ave. With a heavy community presence and a winning culture, Shamrock is a great place to work in Overland Park!u00A0u00A0 u00A0u00A0u00A0u00A0u00A0u00A0u00A0 With an average annual revenue growth of 25% over several decades, Shamrocku2019s success is attributed to three key factors: hiring the best people, cultivating long-term relationships with our customers and continually evolving in the marketplace. u00A0 Responsibilitiesu00A0u00A0 Shamrock Trading Corporation is looking for a Principal Software Engineer to join our Payment Solutions Engineering team. This role is responsible for designing, developing, and implementing scalable, efficient, and maintainable Fintech and payment software systems that meet the business needs of the organization. As a key technical leader, the Principal Software Engineer will mentor engineers and provide guidance on application architecture, interface with enterprise architecture, design, and best practices across multiple software projects and teams. The ideal candidate will have expertise in multiple programming languages and technologies, with a strong understanding of software engineering principles, cloud computing, containerization, and Agile practices. This role is crucial for driving innovation, improving technical processes, and delivering high-quality software products to customers.Provide both technical expertise and inspiration, fostering an environment where complex problem-solving and creative engineering flourishLead the design, architecture, and implementation of complex software systems, ensuring alignment with business goals, enterprise systems and industry best practicesDrive innovation by researching, prototyping, and implementing modern technologies, tools, and methodologies that enhance our software development processesProvide mentorship and guidance to software engineers and other technical team members, fostering a culture of continuous learning and professional growth.Work closely with cross-functional teams to deliver high-quality software solutionsEstablish and enforce coding standards, best practices, and code reviews to ensure the delivery of clean, maintainable, and efficient codeDesign and implement scalable, high-performance, and resilient software architectures that meet the demands of our growing user baseTackle complex technical challenges and provide strategic solutions that address both current and future needs of the businessCreate and maintain comprehensive technical documentation, including system architecture, design patterns, and development guidelinesChampion continuous improvement initiatives, including process optimization, automation, and the adoption of modern development practicesu00A0 QualificationsBachelor's or Masteru2019s degree in Computer Science, Software Engineering, or a related field8+ years of experience in Fintech and/or modern payment solutions software engineering, with at least 3 years in a senior or lead engineering roleStrong proficiency in JavaScript, React, React Native, microservices architecture, and containerization. Experience with cloud platforms such as AWS, Azure, or Google Cloud Expertise building and working with APIsStrong technical knowledge, with hands-on experience building Fintech and/or BaaS payment solutions platforms; knowledge or relevant technology, tools, and middleware is critical covering compliance, onboarding, KYB/KYC and fund flowsProven experience leading and mentoring software engineering teams, with a record of accomplishment delivering high-quality Fintech software productsDeep expertise in payment solutions, specifically including bank payment rails such as ACH, Fed wires, RTP, Fed Now, and/or API Payment IntegrationsExpertise building high-volume transactional processing and cloud first/native distributed systemsExceptional analytical and problem-solving abilities, with a focus on strategic thinking and innovative solutionsExcellent verbal and written communication skills, with the ability to articulate complex technical concepts to diverse audiencesStrong understanding and experience with Agile development practices, including Scrum and KanbanProven experience integrating payment technologies, such as Plaid, Finicity, Stripe, PaypalExperience delivering solutions requiring banking standards such as NACHA and card processing certifications PCI and ISO 8583Strong experience building exception-based operational workflow automation, alerting, and frontend toolsBenefits Packageu00A0 u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0 At Shamrock we hire bright, ambitious people and give them the tools they need to be successful. By investing in training and development, we hope to become a long-term career for employees, where there are always opportunities for advancement. Shamrock also offers a premier set of benefits for employees and their families:u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0u00A0Medical:u00A0Fully paid healthcare, dental and vision premiums for employees and eligible dependentsu00A0u00A0u00A0Work-Life Balance:u00A0Competitive PTO and paid leave policiesu00A0u00A0u00A0Financial:u00A0Generous company 401(k) contributions and employee stock ownership after one yearu00A0u00A0u00A0Wellness:u00A0Onsite gym and discounted membership to select fitness centers. Jogging trails available at Overland Park officesu00A0u00A0u00A0LI-NB1 #LI-Hybrid u00A0 u00A0u00A0J-18808-Ljbffr
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