Principal Engineer, Web and Mobile Technology

| Chicago

OneMain is the largest non-bank lender in the United States and a leading consumer finance company.


One of our critical and highly visible initiatives is building and scaling industry-leading digital experiences for our customers via web and mobile platforms. We’re seeking a Principal Engineer to guide building innovative and scalable solutions that will impact millions of customers.


As Principal Engineer, you will have the backing and white space required to build and optimize widely used experiences that will be highly visible in our industry. You will have direct exposure to leaders and digital thinkers across the organization and will be trusted as a subject mater expert in digital engineering.



As, Principal Engineer, Web and Mobile, you will set the standard for engineering excellence at OneMain for our digital teams. You will contribute to the success of the team by ensuring we deliver sound features at a consistent pace on the leading edge of digital lending. You will innovate, adapt, and build lasting and scalable solutions from scratch, recommend adjustments to resolve software issues, improve the functionality of existing software, and ensure that the design, application, and maintenance of software meets quality standards. You are a mentor, guide and trainer for other engineers. You will evaluate the user’s needs, time limitations, and system limitations when developing software. The Principal Software Engineer is an avid and curious learner, who will stay up to date on new technologies and software development practices.


What you will do

  • Remain hands-on and lead by example, earning respect as a technical leader by remaining in the details.
  • Develop and mentor engineering talent. You will tackle our hardest problems and align the correct tools to solve them.
  • Collaborate and consult across the organization with engineers, designers, marketing, and leaders by communicating, developing, documenting and testing software to ensure that the software meets the needs of our end-users and achieves business goals. 
  • Provide technical guidance to development teams and oversee technical aspects of all projects with our digital applications.
  • Plan and guide the evolution of our digital platforms, primarily Ruby on Rails and native mobile.


Experience and skills needed

The ideal candidate understands how to balance perfection with pragmatism as you integrate with and leverage our existing systems as you and your team help build products. We seek the following:

  • Bachelor’s or master’s degree in computer science or equivalent
  • 10+ years of knowledge of emerging platforms, UI Frameworks, React Native, Android, iOS, operating system principles, and programming best practices
  • 10+years of software engineering experience, including Java, Python, Ruby on Rails
  • 5+ years of experience leading large-scale projects
  • Strong ability to develop the skills of others on multiple teams by mentoring and influencing on advanced technical issues, increasing their productivity and effectiveness by sharing your deep knowledge and experience
  • Preferred 5+ years’ experience large scale enterprise database systems
  • Preferred 5+ experience in financial services industry, especially consumer lending


Company overview

OneMain Financial is the country’s largest lending-exclusive financial company.  With nearly 1,600 branches across 44 states, we proudly offer safe, affordable and transparent installment loans to millions of hard-working people. Our customers turn to us to meet important financial needs, including debt consolidation, medical expenses, household bills, home improvements and auto purchases. OneMain is constantly innovating to serve customers when, where and how they want by investing in our technical digital capabilities. Our steadfast commitment to doing the right thing extends to our customers, our employees and the communities where we live and work – a mission that hasn’t changed for more than 100 years. 



At OneMain, we understand that for our team members to be their best, they need the right opportunities and benefits.  Our comprehensive benefits package for full-time and some part-time employees includes health and well-being options for team members and dependents, up to 4% matching 401(k), tuition reimbursement, continuing education, incentive pay, paid time off, paid volunteer time and more. 





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. 

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Technology we use

  • Engineering
  • Product
  • Sales & Marketing
    • JavascriptLanguages
    • KotlinLanguages
    • RubyLanguages
    • SqlLanguages
    • SwiftLanguages
    • jQueryLibraries
    • ModemizrLibraries
    • Twitter BootstrapLibraries
    • Ruby on RailsFrameworks
    • React.jsFrameworks
    • PostgreSQLDatabases
    • RedisDatabases
    • Google AnalyticsAnalytics
    • OptimizelyAnalytics
    • BalsamiqDesign
    • InVisionDesign
    • PhotoshopDesign
    • SketchDesign
    • Pivotal TrackerManagement
    • TrelloManagement
    • SendGridEmail


Located on the corner of Wacker and Monroe, our office is great for any commute. We’re only a few blocks from the Quincy and Washington/Wells L stops.

An Insider's view of OneMain Financial

What does career growth look like on your team?

We have a great progression path guiding engineers from being individual contributers up to management. I started as a software engineer and worked my way up through senior to lead. A key part to all of this was having 1-on-1's with my manager. These quick meetings helped give me clear direction and feedback to work towards progressing my career.


Associate Director of Software Engineering

What are OneMain Financial Perks + Benefits

OneMain Financial Benefits Overview

We appreciate the time and talent our employees provide to support our customers. As a result, we offer a comprehensive benefits package that gives our employees and dependents the health and wellness support they need, at any stage of their life.

Highlights include: 401(k) match, performance bonus, flexible work schedule, commuter benefits, stocked kitchen and generous PTO.

Eat lunch together
Open door policy
Team based strategic planning
Open office floor plan
Health Insurance & Wellness Benefits
Flexible Spending Account (FSA)
Disability Insurance
Dental Benefits
Vision Benefits
Health Insurance Benefits
Life Insurance
Pet Insurance
Our pet insurance policy covers up to 90% of out of pocket expenses.
Wellness Programs
Retirement & Stock Options Benefits
401(K) Matching
Performance Bonus
Match charitable contributions
Child Care & Parental Leave Benefits
Flexible Work Schedule
Family Medical Leave
Adoption Assistance
Vacation & Time Off Benefits
Generous PTO
Paid Volunteer Time
Paid Holidays
Paid Sick Days
Perks & Discounts
Casual Dress
Commuter Benefits
Stocked Kitchen
Some Meals Provided
Professional Development Benefits
Job Training & Conferences
Tuition Reimbursement
Promote from within
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