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Senior Software Engineer, Backend
Job in
San Francisco, San Francisco County, California, 94199, USA
Listed on 2026-07-21
Listing for:
Jobtailor
Full Time
position Listed on 2026-07-21
Job specializations:
-
Software Development
Backend Developer, Full Stack Developer
Job Description & How to Apply Below
- 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
- 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
Position Requirements
10+ Years
work experience
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