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OneMain Financial Principal Engineer for API Development in Evansville, Indiana

The Principal Engineer for API Development will report into the Service Enablement team of the Enterprise Systems department. This is a hands-on individual contributor technical role, working directly with our leadership and development teams to coordinate, plan, develop and implement consistent and repeatable API development solutions for our applications and technologies.

This role can be remote within driving distance to one of our corporate locations (Baltimore, MD, New York, NY, Evansville, IN, Fort Worth, TX, Charlotte, NC, Chicago, IL, Wilmington, DE)

Job Functions:

  • Provide API architecture direction and guidance to technology and business partners that starts and ends with a focus on delivering actionable recommendations to peers and leadership, so they can adjust policies, products, projects, and solutions to achieve targeted business outcomes.

  • Work with a variety of technologies to design and implement integrations solutions between IBM iSeries, IBM zSeries, Distributed Systems, and various on-premises & cloud-native applications.

  • Provide technical knowledge and experience during the planning, execution and management of our integration solutions.

  • Work with the various teams at OMF on developing integration strategy, best practices & patterns, proof of concepts, as well as identifying opportunities to increase efficiency and resiliency throughout the organization.

  • Prepare documentation and messaging necessary for technology to communicate strategies and plans to executive management.

  • Mentor other team members within the organization on integration solutions.

  • Participate in the development efforts around DevOps, Monitoring, Alerting, KPIs, and Testing as it relates to our integration solutions.

  • Provide proper guidance to ensure integration services and architectures are designed, tested, documented, implemented, enhanced, and maintained according to the enterprise standards and expected service quality.


  • Bachelor’s Degree in Computer Science or Information Systems with higher-level education preferred.

  • Minimum experience will include 7+ years of performing solution and enterprise design with a focus on API development within the technology organization.

  • Experience architecting reusable API solutions

  • Direct, hands on experience in the following platforms:MuleSoft, AWS API Gateway

  • Direct, hands on experience in enterprise design, application development, process engineering and project management.Experience with IBM iSeries, IBM zSeries and Distributed Systems is desirable.

  • Understanding of integration best practices, patterns, data repositories, infrastructure.

  • Analytical mindset and ability to grasp complex topics.

  • Proven involvement in creating or leading complex integration projects.

  • Must have the following foundational skills: Design, Analysis, Communication, Leadership, Integrations, and Best Practices.

  • Ability to create and foster relationships within a team-oriented, collaborative environment.

  • Excellent Communication Skills.

  • Self-motivated and directed, with keen attention to detail.

Note: Employment-based non-immigrant visa sponsorship and/or assistance is not offered for this specific job opportunity.


Because we want our team members to bring us their very best every day, we believe they deserve the right opportunities and benefits. That’s why we packed our comprehensive benefits package for full- and some part-timers with:

  • Health and wellbeing options for team members and their dependents

  • Up to 4% matching 401(k)

  • Tuition reimbursement

  • Continuing education

  • Bonus eligible

  • Paid time off

  • Paid volunteer time

  • And more

Our Company:

OneMain Financial is the country’s largest lending-exclusive financial company, proudly serving millions of customers with safe, affordable and transparent installment loans. Our customers turn to us every day—online and at 1,500 branches in 44 states—to help them take control and improve their financial lives with solutions for debt consolidation, medical expenses, household bills, home improvements and auto purchases. Our talented and dedicated team members constantly look for responsible ways to serve our customers when, where and how they want. It’s all about doing the right thing—a mission that hasn’t changed for more than 100 years.


OneMain Holdings, Inc. is an Equal Employment Opportunity (EEO) and Affirmative Action (AA) employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender perception or identify, national origin, age, marital status, protected veteran status, or disability status.