Senior Software Engineer (Full Stack)
Prosper Marketplace
Software Engineering
San Francisco, CA, USA
USD 173k-205k / year
Posted on Mar 19, 2026
Your role in our mission
Technology versatility is a critical success factor for our team. The ability to stretch beyond one’s specialty by learning new technologies fast and contributing to the team’s goal is highly valued. Prosper’s Engineering culture encourages teamwork, ownership, and cross-functional development of well-rounded engineers who have a holistic view of the problems and solution designs. Above all other factors, we are looking for determined candidates who want to be part of a culture of innovation and creativity as we develop financial technology! We are seeking motivated software engineers to work on our interdisciplinary scrum teams, building large scale systems at Prosper Marketplace. The ideal candidate is passionate about learning the Fintech domain and delivering cutting-edge, high-quality solutions to solve business problems.
Technologies we use: Java, Kotlin, SpringBoot, REST APIs, NodeJs, Microservices, GraphQL, React, Javascript, GCP.
This Full Stack role is roughly 70% backend 30% frontend.
This role is a HYBRID opportunity, based two-days a week (Wednesday & Thursday), from either our San Francisco or Phoenix offices.
How you'll make an impact
- Design and construct highly scalable, resilient, cloud-native, microservices-based distributed architecture systems.
- Develop, maintain, and enhance essential backend and frontend software components
- Collaborate with cross-functional product and analytics teams to guide or actively contribute to significant strategic initiatives, while also addressing ongoing operational challenges at scale
- Apply engineering expertise within a business framework to generate substantial business value, approaching problems with an operational perspective
- Proactively pinpoint gaps, challenges, and requirements within our systems and processes, formulating and implementing robust solutions independently
- Facilitate the migration of existing on-premises services to cutting-edge cloud technologies
- Collaborate with a team of dedicated, intelligent, and ambitious engineers committed to building large-scale systems at Prosper Marketplace
- Contribute to shaping and nurturing our company’s engineering culture, promoting continuous learning and fostering innovation
Skills that will help you thrive
- BS in EE/CS with 8+ years of experience or MS in EE/CS or other applicable disciplines with 6+ years of experience
- Strong grasp of computer science fundamentals, including algorithms, object-oriented programming, and distributed systems architecture
- Proficient in designing and building RESTful services and event-driven systems
- Expertise in Authentication and Authorization solutions
- Hands-on expertise with Java and experience working with both relational and non-relational databases, such as Firestore, Redis, and MemoryStore
- Demonstrated proficiency in leveraging cloud-native architecture and cloud services, particularly in implementing Cloud Functions and architecting Data Flows within GCP or AWS environments
- Proficiency in utilizing tools such as Spring Boot, Spring, Hibernate, JPA, and JMS
- Fundamental knowledge of HTML, CSS, JavaScript & GraphQL
- Proficiency in object-oriented languages such as Java
- Preferred experience in React Native or React, and Event Driven Architecture
Resources to help you prosper
- A hybrid connection: We believe in the "best of both worlds" - a hybrid environment (2 days/week in our SF office) that balances high-touch collaboration with the flexibility of remote work.
- Invested in your future: A competitive salary and a 401(k) with a 5% company match to help you build long-term financial security.
- Holistic well-being: We provide the resources you need to thrive, from flexible time off and paid parental leave to an annual wellness allowance and comprehensive health coverage.
- Professional & personal growth: Take advantage of a suite of premium perks, including Udemy access, childcare assistance, pet insurance, and a bevy of additional savings through Beneplace.
Interview Process
- Recruiter Call: A brief screening to discuss your experience and initial questions
- Technical Interview: Deeper dive into coding skills.
- Team Interview: Meet team members for collaborative discussions, problem-solving, or technical exercises.
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About Our Technology Team
We are growing our Technology team to support our various financial products. The ideal candidate is passionate about learning the Fintech domain and delivering cutting-edge, high-quality solutions to solve business problems. We utilize a progressive, test-driven, Agile development methodology that places a high premium on communication, teamwork, sound design and clean implementation.
About Us
Prosper introduced U.S. consumers to an innovative approach to personal finance as the first peer-to-peer lending platform in the country. Since 2005, Prosper has helped over 2 million customers achieve financial well-being through a comprehensive suite of digital personal finance products.
Prosper’s flagship personal loan* marketplace continues to offer unique value for both borrowers and investors, while the Prosper® Card¹ provides essential access to credit and flexibility for those managing their financial journey. Guided by its mission to advance financial well-being, Prosper is dedicated to helping people thrive by meeting people where they are with simple, trusted, and affordable financial solutions. Learn more at www.prosper.com.
We’re on a mission to hire the very best, and we are committed to creating exceptional employee experiences where everyone is respected and has access to equal opportunity. We realize that new ideas can come from everywhere. It is important to us that every hire connects with our vision, mission, and core values. Join a leading fintech company that’s democratizing finance for all!
Our Values
- Diversity expands opportunities
- Collaboration creates better solutions
- Curiosity fuels our innovation
- Integrity defines all our relationships
- Excellence leads to longevity
- Simplicity guides our user experience
- Accountability at all levels drives results
Applicants have rights under Federal Employment Laws.
California applicants: please click here to view our California Consumer Privacy Act (“CCPA”) Notice for Applicants, which describes your rights under the CCPA.
At Prosper, we're looking for people with passion, integrity, and a hunger to learn. We encourage you to apply even if your experience doesn't precisely match the job description. Your unique skill set and diverse perspective will stand out and set you apart from other candidates. Prosper thrives with people who think outside of the box and aren't afraid to challenge the status quo. We invite you to join us on our mission to advance financial well-being.
Prosper is committed to an inclusive and diverse workplace. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law, including the San Francisco Fair Chance Ordinance. Prosper will consider for employment qualified applicants who are non-US citizens and will provide green card sponsorship.
*All personal loans are made by WebBank.
¹The Prosper® Card is an unsecured credit card issued by Coastal Community Bank, Member FDIC, pursuant to license by Mastercard® International.
173000 - 205000 USD a year
The salary for this position is $173,000 - $205,000 annually, plus bonus and generous benefits. In determining your salary, we will consider your location, experience, and other job-related factors.