Staff Software Engineer (React, TypeScript, Rails, Node)

OneMain Financial • Baltimore, MD

8d • $130,000 - $160,000

About The Position

OneMain Trim does the hard work of saving you money and managing your financial life. Our applications can track your spending, monitor your subscriptions, and more. We are looking for a Staff Software Engineer to provide technical leadership and hands-on engineering for Trim’s Financial Wellness platform. This role is ideal for a senior technologist who thrives in ambiguous problem spaces, leads through influence, and drives high-impact technical initiatives across teams. In this role, you will work closely with Product, UX, Engineering Managers, and other senior engineers to shape platform architecture, guide technical direction, and deliver scalable, high-quality software that improves the financial wellness of our customers. This is a senior individual contributor role that blends deep technical expertise, system-level thinking, and cross-functional leadership.

Requirements

• 8+ years of professional software engineering experience
• Proven experience designing, building, and maintaining distributed systems in production environments
• Strong proficiency across multiple programming languages and technologies, with the ability to learn new stacks quickly
• Hands-on experience in frontend development using Angular, React, JavaScript/TypeScript, and modern build tools as well as backend technologies like Ruby on Rails, Node.js
• Experience delivering customer-facing applications in a cloud-native environment (AWS preferred; Azure or GCP acceptable)
• Strong DevOps experience, including hands-on work with CI/CD pipelines, infrastructure-as-code, containerization, monitoring, and production operations
• Experience with cloud infrastructure, deployment strategies, observability, and reliability engineering practices
• Strong understanding of system design, APIs, data flows, and service-to-service communication
• Demonstrated ability to operate with a high degree of ownership, autonomy, and accountability
• Excellent problem-solving, analytical thinking, and communication skills
• Commitment to continuous learning and sharing knowledge with others

Responsibilities

• Lead the design, implementation, and evolution of complex, distributed systems supporting customer-facing financial wellness products
• Take ownership of cross-functional technical initiatives, driving them from problem definition through production delivery
• Shape and influence platform architecture, technical standards, and engineering best practices across teams
• Collaborate closely with Product Management, UX, Engineering Managers, and other stakeholders to align technical solutions with business objectives
• Break down ambiguous, complex problems into actionable technical plans, identifying risks, trade-offs, and dependencies
• Apply industry-leading design principles, patterns, and modern development practices, including cloud-native architectures and Agile delivery
• Serve as a technical authority and trusted advisor, clearly articulating complex technical concepts and trade-offs to both technical and non-technical audiences
• Mentor and guide engineers through design reviews, code reviews, and technical coaching, raising the overall engineering bar
• Identify opportunities for innovation and continuous improvement, driving adoption of new technologies and approaches where they add value
• Take accountability for technical outcomes, system reliability, and long-term platform health

Benefits

• Health and wellbeing options including medical, prescription, dental, vision, hearing, accident, hospital indemnity, and life insurances
• Up to 4% matching 401(k)
• Employee Stock Purchase Plan (10% share discount)
• Tuition reimbursement
• Paid time off (15 days’ vacation per year, plus 2 personal days, prorated based on start date)
• Paid sick leave as determined by state or local ordinance, prorated based on start date
• Paid holidays (7 days per year, based on start date)
• Paid volunteer time (3 days per year, prorated based on start date)

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 5,001-10,000 employees