Senior Full-Stack Engineer, Web Acquisition

SoFi • Seattle, WA

22h

About The Position

We are seeking a highly motivated and experienced Senior Full Stack Software Engineer to join the Member Growth - Web Acquisition team. This team is part of Sofi’s MarTech group and is dedicated to transforming the marketing technology landscape with the ultimate goal of accelerating SoFi’s member growth. We will achieve this by developing and maintaining world-class, fast, personalized web experiences across organic and paid channels. You will own the full development lifecycle, building innovative solutions that directly influence our top-of-funnel user acquisitions. By integrating AI-driven capabilities and building scalable web tooling, this role will help empower marketing and growth teams with self-serve content creation, SEO/GEO optimization, and experimentation on SoFi’s logged-out web experiences, enabling faster iteration, stronger organic growth, and adaptability to an evolving digital ecosystem and platform constraints. What you’ll do Work on building react-based web applications (sofi.com, SoFi Learn) with cross-functional teams, improving web core vitals and overall site performance. Drive product-led growth by creating seamless, personalized, and high-converting experiences on the critical funnels. Develop testable and accessible features, leverage a/b experiment for measurement, identify and solve potential implementation issues. Generate, enhance, and promote ideas for useful new projects and technologies. Deliver and operate highly available and scalable services in a production environment. Communicate effectively with project leads, product managers, and software developers on multiple projects. Contribute to technical roadmaps and engineering excellence, build and improve technical architectures across product features. Mentor other engineers, support healthy technical culture, and help the team grow.

Requirements

• Bachelor’s degree, ideally in a technical field, but we understand great engineers come from a variety of different backgrounds and also consider relevant work experience.
• 4+ years of experience in building user-facing web experience using React, JavaScript, PHP, and modern web frameworks.
• Solid understanding of web technologies including frontend/backend interaction, API design, common design patterns.
• Familiarity with containerization (e.g., Docker, Kubernetes), API framework (e.g. Spring or Spring Boot) and database (e.g. MySQL/PostgreSQL)
• Experience in building large-scale applications with full development lifecycles with unit, functional, and end-to-end testing.
• Strong willingness to learn, act on feedback, collaborate, get things done.
• A solid sense of ownership to drive projects from inception to completion and accountability for problem solving and delivery.
• Be able to work efficiently and collaboratively in a dynamic production environment.

Nice To Haves

• Experience in scaling highly available, mission-critical systems
• Direct experience in fintech, financial products, or consumer-facing platforms
• Exposure to performance optimization or reliability improvements in web applications
• Experience working with CMS platforms (e.g., WordPress) from a feature or migration perspective
• Experience with observability and analytics tools such as Datadog, Amplitude, and Snowflake.

Responsibilities

• Work on building react-based web applications (sofi.com, SoFi Learn) with cross-functional teams, improving web core vitals and overall site performance.
• Drive product-led growth by creating seamless, personalized, and high-converting experiences on the critical funnels.
• Develop testable and accessible features, leverage a/b experiment for measurement, identify and solve potential implementation issues.
• Generate, enhance, and promote ideas for useful new projects and technologies.
• Deliver and operate highly available and scalable services in a production environment.
• Communicate effectively with project leads, product managers, and software developers on multiple projects.
• Contribute to technical roadmaps and engineering excellence, build and improve technical architectures across product features.
• Mentor other engineers, support healthy technical culture, and help the team grow.

What This Job Offers

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