Senior Software Engineer, Unsecured Installments
Required skills
- backend services
- APIs
- data modeling
- distributed systems
- production systems
- monitoring
- incident response
- performance optimization
- operational ownership
- React
Nice to have
- service architecture
- relational databases
- non-relational databases
- consumer-facing products
- high-volume transactional systems
- fintech
Role summary
Upstart is seeking a Senior Software Engineer for its Unsecured Installments team, a core lending product. This role involves technical leadership for frontend and full-stack borrower experiences, primarily using React and TypeScript. Responsibilities include owning the design and delivery of complex projects, shaping architecture, setting technical direction for services, APIs, and data models, and ensuring high quality and reliability. The engineer will collaborate with product, design, and other engineering teams, mentor junior engineers, and contribute to the use of AI in development and product features. The role requires 6+ years of professional software engineering experience with deep proficiency in backend services and APIs (e.g., Python, Java, Go, Node.js), service architecture, data modeling, and distributed systems. Experience building reliable production systems and working in ambiguous environments is essential. Fintech or lending background is preferred.
About Upstart
At Upstart, we’re united by a mission that matters: to radically reduce the cost and complexity of borrowing for all Americans. Every day, we bring creativity, experimentation, and advanced AI to reshape access to credit, helping millions move forward financially with clarity and confidence.
As the leading AI lending marketplace, we partner with banks and credit unions to expand access to affordable credit through technology that’s both radically intelligent and deeply human. Our platform runs over one million predictions per borrower using more than 3,000 signals, powering smarter, fairer decisions for millions of customers. But the numbers only hint at the impact. Every idea, every voice, and every contribution moves us closer to a world where credit never stands between people and their financial progress.
We’re proudly digital-first, giving most Upstarters the flexibility to do their best work from wherever they thrive, alongside teammates across 80+ cities in the US and Canada. Digital-first doesn’t mean distant. We’re intentional about in-person connection through team onsites, planning sessions, and moments that spark creativity and trust. And whether you choose to work primarily from home or collaborate in-person from one of our offices in Columbus, Austin, the Bay Area, or New York City, you’ll have the support to work in the way that works best for you.
If you’re energized by tackling meaningful problems, excited to innovate with purpose, and motivated by work that truly matters, we’d love to hear from you.
The Team:
Unsecured Installments is one of Upstart's core lending products, helping borrowers access credit through a seamless, digitally native experience. The team owns critical parts of the borrower journey across offer generation, pricing, underwriting, funding, and borrower experience, while working closely with the broader lending platform that powers Upstart at scale. Recent work has focused on improving borrower flows, repricing and rate flexibility, partnership experiences, and the overall quality of the customer-facing experience.
As a Senior Software Engineer on the Unsecured Installments team, you'll be a technical leader for the frontend and full-stack experiences that borrowers interact with directly. Working primarily in React and TypeScript, you'll own the delivery of large, multi-month projects, shape the architecture of the team's mobile-web and full-stack surfaces, and set a high bar for quality across the borrower experience. You'll partner closely with product, design, and backend engineers to turn ambiguous problems into durable, well-architected solutions, and you'll mentor other engineers along the way.
How you’ll make an impact
Minimum Qualifications
Preferred Qualifications
Position location: This role is available in the following locations: Remote
Travel requirements As a digital first company, the majority of your work can be accomplished remotely. The majority of our employees can live and work anywhere in the U.S but are encouraged to to still spend high quality time in-person collaborating via regular onsites. The in-person sessions’ cadence varies depending on the team and role; most teams meet once or twice per quarter for 2-4 consecutive days at a time.
#LI-REMOTE
#LI-MidSenior
At Upstart, your base pay is one part of your total compensation package. The anticipated base salary for this position is expected to be within the below range. Your actual base pay will depend on your geographic location–with our “digital first” philosophy, Upstart uses compensation regions that vary depending on location. Individual pay is also determined by job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your preferred location during the hiring process.
In addition, Upstart provides employees with target bonuses, equity compensation, and generous benefits packages (including medical, dental, vision, and 401k).
United States | Remote - Anticipated Base Salary Range$166,900—$230,900 USDAt Upstart, your base pay is one part of your total compensation package. The anticipated base salary for this position is expected to be within the below range. Your actual base pay will depend on your geographic location–with our “digital first” philosophy, Upstart uses compensation regions that vary depending on location. Individual pay is also determined by job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your preferred location during the hiring process.
In addition, Upstart provides employees with target bonuses, equity compensation, and generous benefits packages (including medical, dental, vision, and 401k).
Canada | Remote - Anticipated Base Salary Range$153,000—$218,500 CADWhat you'll love
At Upstart, our benefits for full-time employees are designed to support your health, financial well-being, family, and personal growth. Here’s what you can expect:
For roles based in Canada, please note that we are not currently able to hire in Quebec.
Upstart is a proud Equal Opportunity Employer. Just as we are dedicated to improving access to affordable credit for all, we are committed to inclusive and fair hiring practices.
If you require reasonable accommodation in completing an application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please email candidate_accommodations@upstart.com
https://www.upstart.com/candidate_privacy_policy
Sample Upstart interview questions
- 1
Diameter of a Binary Tree Find the diameter of a binary tree. Input: root = [1,2] Output: 1 Explanation: The longest path is simply the single edge connecting the root node to its only child.
codingmedium - 2
Connected Components in an Undirected Graph Determine the number of connected components in an undirected graph. Input: n = 4, edges = [[0,1],[2,3]] Output: 2 Explanation: The graph is split completely evenly into two distinct isolated components: nodes {0,1} and nodes {2,3}.
codingmedium - 3
Split Array into Consecutive Subsequences Split an array into consecutive subsequences. Input: nums = [1,2,3,4,4,5] Output: FALSE Explanation: The numbers can form [1,2,3,4], but the remaining leftover group [4,5] is too short to form a valid sequence of length 3.
codingmedium - 4
Pacific and Atlantic Water Flow Calculate water flow from a matrix to the Pacific and Atlantic oceans. Input: heights = [[2,1],[1,2]] Output: [[0,0],[0,1],[1,0],[1,1]] Explanation: All cells can flow to both oceans because water can move to adjacent cells of equal or lower height or directly off the edges.
codingmedium - 5
Unique Combinations that Sum to a Target Find all unique combinations in an array that sum to a target. Input: candidates = [2,4,6], target = 6 Output: [[2,2,2], [2,4], [6]] Explanation: Uses backtracking to find all valid combinations that sum to 6, allowing for explicitly repeated elements.
codingmedium
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