Senior Software Engineer, Full Stack

Senior Software Engineer, Fintech – Auto Finance Platform

We're a growth-stage fintech rebuilding the auto lending stack on a clean, modern codebase. Small team, large surface area, production deploys every week, and real architectural ownership from day one.

• Design and Development:
  Architect, build, and operate the backend services and APIs that power loan origination, decisioning, and servicing.
• API Integration:
  Lead integrations with credit bureaus, fraud providers, payment processors, and dealer systems, including contract design, retry/idempotency strategy and operational runbooks.
• Feature Ownership:
  Own features end-to-end, partnering directly with Product and Design from problem framing through production rollout.
• Code Quality:
  Set the patterns for testing, observability, security, and CI/CD that the rest of the team adopts.
• Mentorship:
  Run design reviews, give technical guidance, and help interview and onboard the engineers who join after you. Playing a core role in establishing and scaling a high-performance engineering team and culture.

• US Citizenship:
  Applicants must be authorized to work in the U.S.
• Experience:
  
  Minimum of 5+ years of professional experience in software engineering.
• Domain-Adjacent
  
  Experience:
  
  A track record of building and operating mission-critical integrations with external partners in a regulated industry (finance, payments, insurance, healthcare, or similar).
• Technical Depth:
  Expert level in Type Script/Node.js or C#/.NET, with production experience in a structured backend framework and a modern React framework. Comfortable picking up the second stack.
• Cloud & Architecture:
  Hands‑on experience with a major cloud provider (AWS preferred), RESTful API design, and distributed systems.
• Education:
  
  Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.

• Experience working in a Turborepo or Nx monorepo environment with Yarn Work spaces.
• Prior experience working in a start-up environment.
• Active contributor to open-source projects or communities.
• Familiarity with data encryption, field-level security, and syncing data to external systems (e.g., MSSQL-based operational data stores).
• Experience with AWS Cognito, SAML/SSO authentication, or similar identity platforms.
• Experience with Postgre
  
  SQL and modern database tooling such as Prisma ORM or similar type-safe query builders.
• Auto finance, lending, or other regulated-industry domain experience.
• Comfortable working across multiple language ecosystems (Type Script and .NET).
• Multi-tenant Postgre
  
  SQL with row-level security, IAM auth, or similar isolation patterns.
• Serverless on AWS (Lambda + API Gateway) and Terraform-managed infrastructure.

• Location:
  
  This role offers a hybrid work schedule and is preferred for candidates based in or willing to commute to our offices in Tempe, AZ, or Coppell, TX.
• Schedule:
  
  Hybrid

We are a rapidly growing fintech where your contributions have a direct, visible impact on the business. You will work with a clean tech stack and be part of the core group building a high-performance engineering team, empowered to make key architectural decisions and build systems from the ground up. This is an opportunity to redefine an industry and accelerate your career.