Sr Software Engineer (Backend)

LendingClub; San Francisco, Northern (CA, KY); Hybrid; USD 190,000 - 207,000; Full time

Job summary

Happen Bank in San Francisco is seeking a Sr Software Engineer (Backend) to own the authentication and user profile service end-to-end, designing, building and operating core systems used by millions of users across lending, banking and investment products with secure, scalable APIs.

You will collaborate with product, data, and security teams, drive architectural decisions, mentor juniors, and apply AI tools to accelerate development while maintaining reliability and regulatory compliance.

Qualifications

• 4+ years of software engineering experience with backend focus.
• Deep understanding of RESTful API design for internal/external consumers.
• SME in Java and its ecosystem, including Spring Boot, JPA/Hibernate, JVM.
• Strong system design skills for distributed, scalable architectures on AWS.
• Hands-on debugging across services, infrastructure, and dependencies.
• Experience integrating with external vendors/partners and ensuring resilience.
• Experience using AI tools to accelerate engineering workflows responsibly.
• Emphasis on security, maintainability, and long-term cost considerations.
• Collaborates effectively with product and business stakeholders.

Responsibilities

• Lead initiatives end-to-end across authentication and user profile domain.
• Own reliability of systems authenticating users and managing their data and sessions.
• Design and operate distributed systems on AWS, including Lambda-driven flows.
• Document technical decisions balancing scalability, cost, and maintainability.
• Lead design reviews with architects, PMs, and stakeholders.
• Harden authentication/profile APIs for data integrity across services.
• Diagnose and resolve production issues across distributed systems.
• Integrate AI tools into engineering workflows and mentor peers.
• Improve engineering practices and coach engineers through code reviews.

Skills

RESTful API design

Java & Spring

Distributed systems

AWS Cloud

Debugging

Security best practices

Team collaboration

AI tooling

Education

Bachelor's degree or higher

Tools

MySQL

PostgreSQL

Oracle

Job description

## Sr Software Engineer (Backend)Apply: San Francisco, CA: Full time: Posted Yesterday: R0007500### Current Employees of Happen Bank: Please apply via your internal Workday Account Happen Bank (formerly LendingClub) is built around a simple purpose: to clear the way to help people turn intention into action, and action into financial progress. That means offering focused products, a frictionless mobile-first experience, and clear terms with no gotchas. Respect and fairness is part of our DNA, and that ideal shapes how we work, how we treat each other, and how we invest in our employees and our community. Join us in using data, bold thinking, and a commitment to innovation to help clear the way for millions of Americans to achieve more. ## ## About the RoleAs a Sr Software Engineer, you'll drive complex initiatives across our authentication and user profile management systems, owning the user-management service end to end and leading software design, development, and delivery. This role focuses on taking ambiguous, complex problems and transforming them into reliable, well-architected systems that every product surface — and every user session — depends on. The systems you'll own sit at the center of our platform: authentication and identity for millions of users across lending, banking, and investment products, with strict PII handling, field-level encryption, and the login/session reliability that everything else in the platform is built on top of.## ## What You'll Do * Lead initiatives end to end across the authentication and user profile domain, from technical analysis and system design through delivery and operation* Own the reliability of systems that authenticate users and manage their profile and account data credentials, sessions, MFA/SSO, contact and preference data, and account recovery flows* Design and operate distributed systems on AWS, including event-driven flows on AWS Lambda, addressing consistency, fault tolerance, and scale for high-throughput authentication traffic (login, token refresh, session validation)* Make and document technical decisions, weighing tradeoffs in scalability, cost, and maintainability for systems built on Java and cloud technologies* Lead system design discussions and design reviews, partnering with software architects, product managers, and business stakeholders to align technical direction with business goals* Harden authentication and profile APIs consumed by every downstream service, ensuring data integrity, backward compatibility, and resilience as the platform scales* Diagnose and resolve complex production issues across services, using strong debugging skills to trace problems through distributed systems and cloud infrastructure* Integrate AI tools into day-to-day engineering, accelerating analysis, coding, and review, and show peers practical, responsible ways to apply them* Improve how the team works by strengthening engineering practices, workflows, and standards for quality, testing, and observability, and by mentoring engineers through code review and pairing## ## **About You*** 4+ years of software engineering experience; bachelor's degree or higher, or equivalent combination of education and experience* You have a deep understanding of RESTful API design and build clean, well-versioned, and resilient APIs for internal and external consumers* You're an SME in Java and its ecosystem, including Spring Boot, JPA / Hibernate, JVM - OpenJDK, Oracle JDK, or Amazon Corretto* You have strong system design skills and are experienced designing distributed systems that stay reliable under scale, failure, and change* You're experienced building and operating cloud-native services on AWS and designing data models on relational databases such as MySQL, PostgreSQL, or Oracle* You're a strong debugger who can trace issues across service boundaries, infrastructure, and third-party dependencies to root cause* You have hands-on experience integrating with external vendors and partner systems, and you design for resilience when dependencies are outside your control* You take ownership of your domain — driving outcomes independently, anticipating risk, and following through* You have hands-on experience using AI tools to accelerate your work and improve output quality, you're equally using them yourself and showing colleagues how, and you're thoughtful about their limitations and where human judgment matters most* You set a high bar for security, maintainability, and the long-term cost of decisions made in the name of speed* You collaborate effectively across engineering, product, and business, and you adapt your approach based on feedback and context **Nice to Have*** Experience in banking, trading platforms, or other regulated financial industries* Experience with working front end technologies* Experience with event-driven architectures and high-throughput, low-latency systems* Track record of building partner or third-party integrations at scale **Work Location**San Francisco The above locations are eligible offices for this role. The locations have been determined to foster in-person collaboration with this role’s team or the related business lines. We utilize a hybrid work model, and our teams are in-office Tuesdays, Wednesdays, and Thursdays. In-person attendance is essential for this role’s success, and remote placement will not be considered. Happen Bank offers relocation, based on actual job level. **Time Zone Requirements**Primarily PT While the position will primarily work local hours, Happen Bank is headquartered in Pacific Time and our ideal candidate will be flexible working across time zones when necessary. **Travel Requirements**As needed travel to Happen Bank offices and/or other locations, as needed. **Compensation**The target base salary range for this position is 190,000-207,000. The base salary of the role will be determined by job-related knowledge, experience, education, skills, and location. Base salary is just one part of LendingClub’s Total Rewards package. You may also be eligible for long-term awards (equity) and an annual bonus (which is based on company performance, employee performance and eligible earnings). We’re creating new financial services solutions for our members based on fairness, simplicity, and heart, and we treat our employees the same way. We offer a competitive benefits package that includes medical, dental and vision plans for employees and their families, 401(k) match, health and wellness programs, flexible time off policies for salaried employees, up to 16 weeks paid parental leave and more. #LI-Hybrid#LI-JH1Happen Bank is an equal opportunity employer and dedicated to diversity, equity, and inclusion in the workplace. We do not discriminate on the basis of race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), gender, gender identity, gender expression, sexual orientation, age, marital status, veteran status, disability status, political views or activity, or other applicable legally protected characteristics. We believe that a variety of perspectives will make our teams and business stronger as we work together to transform the traditional banking system.We are committed to providing reasonable accommodations for qualified individuals with disabilities in our job application process. If you need assistance or an accommodation due to a disability, please contact us at [e-mail]. **Notice on AI Tool Use**For select roles and locations, candidate interviews may be recorded, transcribed and summarized by tools such as artificial intelligence (AI) to assist our hiring managers with the application process. You will have the opportunity to opt out of recording, transcription, and summarization prior to any scheduled interviews. We will not discriminate against you if you choose to opt out. During the interview, we will collect the following categories of personal information from or about you: contact information, identifiers, professional and employment-related information, sensory information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment.We will only share your interview, transcription, or summary with persons whose expertise or technology is necessary to process your application, evaluate your fitness for a position, and administer or support the tool. We will not sell your personal information or disclose it to any third party for their marketing purposes. For more information about how we will handle your personal information, please refer to our Privacy Disclosure. We will delete any recording of your interview promptly but in no event later than 30 days after making a hiring decision.