As a Senior Backend Engineer on the Personal Loans team, you will own the borrower-facing experiences that drive Prosper’s core business — from rate check through funding
Using modern web and mobile technologies, you will build and maintain the applications that guide borrowers through one of the most important financial decisions they’ll make
Your work will directly impact conversion, borrower satisfaction, and Prosper’s top-line growth
We are investing heavily in AI across our engineering organization — from AI-assisted development workflows to intelligent borrower experiences
You’ll be joining a team that actively embraces AI tools to accelerate delivery, improve code quality, and explore new ways to make the borrower journey smarter and more personalized
Collaborate within a cross-functional team that includes product, design, frontend engineering, and quality engineers to deliver seamless borrower experiences across web and mobile
Own projects end to end — from technical design and architecture through launch, iteration, and measurement — driving outcomes that move the business forward
Build and evolve our high-performance Java and Kotlin microservices, deploying scalable features across our modern Spring Boot stack
Design modern event-driven architectures (like GCP Pub/Sub) that accelerate development across multiple product teams
Partner with frontend and platform engineering teams to integrate client applications with secure, performant REST and GraphQL APIs
Identify and drive improvements in system latency, database query optimization, testing coverage, and cloud infrastructure efficiency
Uphold high standards of code quality and user experience while iterating rapidly in a regulated environment
Leverage AI-powered tools (coding assistants, automated testing, code review) to amplify your productivity and help establish best practices for AI-assisted development across the team
Contribute to a strong, inclusive engineering culture by mentoring peers, championing best practices, and participating in thoughtful code reviews
Benefits
Take-what-you-need (paid) vacation for salaried employees
20 days of PTO and 7 paid holidays/year for hourly employees
Stock options
401K retirement savings plan with generous matching
Comprehensive health, dental and vision insurance plans, with options specific to your own health coverage needs
Prosper Fit - A monthly stipend to use for gym memberships, personal training sessions, yoga and exercise classes, or club sports/fitness fees
Pre-tax commuter/parking assistance
Snacks and beverage selections in our kitchen
Monthly meet-and-greet happy hours
Perkspot discount programs
One Medical
SF Location - Rooftop deck with ping-pong and foosball table
Quality & Testing Rigor: Disciplined approach to automated testing (unit, integration, and contract tests) and system observability to ensure services are meticulous, secure, and trustworthy
Senior Engineering Expertise: BS in EE/CS with 8+ years of experience or MS in EE/CS or other applicable disciplines with 6+ years of experience
User-Centric Advocacy: A deep focus on system reliability and financial accuracy, sweating the details to protect the “borrower behind the screen” and preserve trust in a regulated domain
Enterprise Backend Mastery: Deep proficiency in Java, Kotlin, and the Spring Boot framework, with the versatility to design, build, and scale distributed microservices
Modern Cloud Infrastructure: Familiarity with cloud-native architectures (specifically GCP, Firestore, Spanner, and Cloud Functions) and modern CI/CD pipelines to maintain a high-velocity development environment
Collaborative Leadership: Excellence in cross-functional communication and a dedication to elevating the team through clear mentorship and knowledge sharing
AI-Forward Mindset: Active use of AI coding assistants (Cursor, Copilot) and a commitment to exploring new AI developments to enhance team productivity and solve product problems
Robust Data Integration: Hands-on experience with RESTful APIs, GraphQL, and event-driven patterns (such as GCP Pub/Sub) to power high-performance applications
Extreme Ownership: A proactive, high-accountability approach to driving projects to completion and unblocking yourself to deliver outcomes, not just outputs