Advance your potential – and reach your goals
Staff Engineer - Platform Architect
Location: West Valley City, Utah
What makes a Staff Engineer - Platform Architect successful at OneMain? Check out the top traits we’re looking for and see if you qualify.
- Adaptable
- Analytical
- Curious
- Entrepreneurial
- Inventive
- Problem Solver
Culture
- We foster an entrepreneurial spirit that's powered by a national brand – our teams are empowered to make a difference
- We encourage teams to take ownership of initiatives in this fast-paced, innovative culture so they can drive solutions that stay ahead of customer needs
- We promote collaboration through Connectivity Days, aimed at strengthening in-person relationships and engagement within our sites
- We promote avenues to allow team members to expand their professional capabilities and continuously develop skills, facilitating upward mobility and career progression
I like working at OneMain because of the opportunity it provides. You get to work with a lot of talented people, a lot of motivation to better the lives of our customers and a lot of fun technology that you get to interact with on a daily basis. I feel like I have many different options that I can take on yearly.
Andy W., Software Developer
Benefits
We promote social and family well-being by offering paid time off for volunteer hours and providing family back-up care.
We offer extensive, comprehensive coverage to support team members’ needs physically and mentally, such as access to Talkspace and Hinge for on-demand physical therapy via an app.
We offer financial wellness that includes 401(k) with match, ESPP, tuition reimbursement and tools like subscription cancelation that help you stay on top of your financial goals.
Staff Engineer - Platform Architect
Location: West Valley City, UT
OneMain Financial is seeking Staff Engineer – Platform Architect to shape and enhance the architecture and delivery of our core lending platforms, including our proprietary Loan Origination System (LOS), Loan Servicing System (LSS), and multiple high-traffic web properties. This position is based on-site in West Valley City, UT.
This is a critical leadership role within the technology organization. The successful candidate will own system design and implementation across platforms that power key customer interactions and enterprise-wide financial services. This engineer will lead by example—mentoring peers, partnering with product teams, and collaborating cross-functionally with Legal, Accounting, Finance, Credit, and Marketing leaders.
Key Responsibilities
- Own the end-to-end architecture and technical delivery of key systems including LOS, LSS, and major customer-facing applications (e.g., omfauto.com, foursight.com, rateworks.com).
- Act as technical authority across domains—ensuring scalable design, reusable patterns, and adherence to secure development practices.
- Lead the design and implementation of APIs, middleware services, and integrations with third-party tools such as Twilio Flex.
- Mentor junior engineers through code reviews, architectural discussions, and hands-on pairing.
- Identify and implement automation and continuous integration strategies to improve development velocity and quality.
- Propose and lead technical initiatives that modernize legacy systems and improve scalability.
- Proactively mitigate operational risk by anticipating infrastructure or application-level issues.
What Sets You Apart
- 6-8 years of experience with increasing responsibility, including architecting mission-critical applications in .NET.
- Deep fluency in C#, .NET Framework, and T-SQL—with the ability to design robust, performant backend systems.
- Experience designing distributed systems using SOA principles and multi-tier architectures.
- Expertise in WPF/XAML, LINQ, MVVM, and WebAPI development, with exposure to modern frameworks like React and Angular.
- Proficiency in API development and integration (REST, JSON, XML) and internal service orchestration.
- Ability to communicate architectural decisions clearly across technical and non-technical audiences.
- Strong grasp of Agile delivery and DevOps principles.
- Bachelor’s degree in Computer Science, Engineering, or related field (Master’s preferred).
- Experience mentoring developers and championing clean code, reusability, and modern architectural patterns.
- Collections Specialist Indiana, United States 07/02/2025
- Manager, Loss Prevention Strategy and Analytics Delaware, United States 05/07/2025
- Manager, Model Governance and Analysis Delaware, United States, Maryland, United States 04/30/2025
- Lead Quantitative Analyst, Credit & Pricing Delaware, United States 05/23/2025
You have not saved any jobs.
You have not recently viewed any jobs.