Senior Frontend/Full-Stack Engineer, Unsecured Installments

ApplyMint; United States; On-site; USD 166,900 - 223,900; Full time

Benefits offered by this job

Competitive pay

401(k) plan

ESPP

Health coverage

Wellness allowance

Productivity allowance

Job summary

Upstart is seeking a Senior Software Engineer for the Unsecured Installments team to lead frontend and full‑stack initiatives, primarily in React and TypeScript. You’ll shape architecture, guide cross‑functional partners, and deliver high‑quality borrower experiences at scale.

You will mentor peers, set roadmap direction, and apply strong engineering practices, including testing and observability, while exploring AI‑driven improvements across product surfaces.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience) and 6+ years of professional software engineering experience.
• Deep proficiency building complex web applications with React and TypeScript, including component architecture, state management, performance optimization, and consuming REST or GraphQL APIs.
• Full‑stack experience designing and building backend services and APIs in a language such as Python, Java, Kotlin, Ruby, or Node.js.
• Track record of independently leading the design and delivery of large, business‑critical frontend or full‑stack projects in production.
• Ability to work effectively in ambiguous environments where product requirements, constraints, and system boundaries evolve over time.
• Strong communication and collaboration skills, with the ability to explain technical tradeoffs and align product, design, and engineering partners.

Responsibilities

• Own the design and delivery of large, complex frontend and full‑stack initiatives using React and TypeScript, from planning and sequencing through launch and long‑term maintenance.
• Set technical direction for the team’s frontend architecture and full‑stack patterns, owning a 3‑6 month roadmap and proactively addressing systemic gaps that threaten team effectiveness.
• Partner closely with product, design, and backend engineers to translate roadmap priorities and borrower needs into scalable, high‑quality experiences.
• Raise the bar for engineering excellence through strong component and API design, thoughtful state management, testing, observability, and operational rigor across borrower‑facing surfaces.
• Lead through ambiguity, breaking down loosely defined problems into clear, testable plans and using data to inform tradeoffs on scope, performance, and user experience.
• Mentor and grow other engineers through code reviews, design reviews, and technical guidance, and serve as a trusted collaborator across the team.
• Contribute to how the team uses AI in development workflows and product capabilities, with a pragmatic view of where it can create meaningful leverage.

Skills

React

TypeScript

REST/GraphQL APIs

UI architecture

Frontend development

Education

Bachelor's degree in Computer Science or related field

Tools

Python

Java

Kotlin

Ruby

Node.js

Job description

Upstart is seeking a Senior Software Engineer for the Unsecured Installments team to lead frontend and full‑stack initiatives, primarily in React and TypeScript. You’ll shape architecture, guide cross‑functional partners, and deliver high‑quality borrower experiences at scale.

You will mentor peers, set roadmap direction, and apply strong engineering practices, including testing and observability, while exploring AI‑driven improvements across product surfaces.