Principal Software Engineer, Member Growth

SoFi • San Francisco, CA

5d

About The Position

SoFi is seeking a Principal Engineer to lead the technical and architectural evolution of our Member Growth platforms — the systems that power member acquisition and engagement for every product across the company.
Key contributions of this role include:
Architect agentic and AI-driven systems; define evaluation strategy and drive quality, safety, and compliance of AI workflows in a regulated environment.
Define and drive long-term architectural direction across Member Growth platforms: campaign automations, communications, marketing data, and web/mobile acquisition.
Lead cross-organizational platform convergence — building shared primitives that multiple product lines consume while preserving each team’s flexibility.
Identify and resolve systemic technical problems across teams; drive alignment to deliver on business and strategic goals.
Raise engineering maturity: design review rigor, operational standards, and mentorship loops that develop senior ICs into technical leaders.
Collaborate with Product, Marketing, Data Science, Business, Legal, and Compliance to align technology strategy with short and long-term goals.

Requirements

• Bachelor’s or Master’s in Computer Science, Software Engineering, or equivalent.
• 10+ years software engineering experience, including 8+ years in technical leadership driving cross-team strategy.
• Deep expertise in event-driven, high-scale distributed systems — failure modes, consistency tradeoffs, reconciliation, and compliance-grade audit trails.
• Proven cross-team technical leadership tied to business goals; exemplary communication and executive-level representation skills.
• Hands-on technical leadership who is willing to roll up your sleeves to design, prototype, and ship critical features in production.
• Proficient in Java, Kotlin, or Go; hands-on with Kafka, Docker, Kubernetes, and Spring Boot or similar.
• Experience with public cloud infrastructure (AWS preferred); strong fundamentals in relational and document databases, microservices, and high-availability design.

Nice To Haves

• Experience building marketing, advertising, or communications platforms — multi-tenant or consumer-facing at scale.
• Experience handling data at scale: event processing, storage, and querying for hundreds of millions of events and attributes per day.
• Experience building production AI agents or LLM-powered platforms — orchestration, evals, retrieval/grounding (RAG), and guardrails for regulated environments.
• Experience in financial services or regulated industries where compliance and data integrity are architectural requirements.
• Track record of platform convergence: unifying infrastructure across acquisitions, subsidiaries, or organizations with different technical stacks.

Responsibilities

• Architect the next generation of Campaign Automations platform — AI-driven targeting, personalization, and customer journey orchestration at scale.
• Design the unified communications architecture for member engagement at scale with compliance-grade correctness.
• Define the evaluation strategy and drive quality, reliability, safety, and observability of AI-driven workflows in a regulated financial environment.
• Lead cross-organizational platform convergence — shared architectural primitives across organizations with different stacks and competing priorities.
• Establish operational integrity standards: automated verification, reconciliation mechanisms, and self-healing infrastructure that prove these platforms are correct.
• Prototype and ship using AI tools; push the team toward AI-native engineering practices.
• Build engineering culture: rigorous design reviews, clear standards, incident-to-prevention feedback loops, and mentoring senior engineers into technical leaders.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Number of Employees: 1,001-5,000 employees