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Founding Fullstack Engineer – Growth-Focused SaaS Platform (Stealth Startup) Remote Options: In-office, Hybrid Location: San Francisco (San Francisco Bay Area) We’re on a mission to revolutionize how small and medium-sized businesses (SMBs) harness technology to grow. Our team is building a powerful, modern marketing platform that integrates seamlessly into the core business systems used by SMBs in industries like salons, fitness, hospitality, and more. By embedding advanced marketing tools directly into the platforms that SMBs already rely on, we’re empowering the backbone of the economy to thrive in a digital-first world. Why Join Massive Impact: You’ll be a key player in building technology that directly supports the success of hundreds of thousands of real-world businesses. Your work will make a tangible difference for entrepreneurs and local economies. Collaborative, Ambitious Culture: Work side-by-side with experienced founders and a passionate team who care deeply about customer outcomes and each other. We value transparency, empathy, and a “roll up your sleeves” mentality. Ownership & Autonomy: As an early engineer, you’ll have significant influence over technical architecture, product direction, and team culture. We trust you to take initiative and drive projects from idea to launch. Growth Opportunities: Shape not only the product but also your own career. We offer uncapped growth potential as we scale, with both cash and equity compensation at the top of the market. Strong Backing: We are well-funded by leading investors and supported by a network of advisors with deep experience in SaaS and SMB technology. What You’ll Do Partner directly with customers to design and integrate APIs and embedded solutions that transform the marketing experience for SMBs. Architect and build robust REST APIs that power critical components of our marketing automation stack. Lead full-stack product development, leveraging the latest AI tools to deliver innovative features and outstanding user experiences. Collaborate with product and design teams to iterate quickly and deliver exceptional value to end users. Take ownership of projects from concept to deployment, ensuring quality, scalability, and performance. Our Tech Stack Backend: Ruby on Rails Frontend: React (with Typescript), styled using TailwindCSS Databases: Redis and PostgreSQL Infrastructure: AWS, Kubernetes What We Value Deep empathy for users and teammates A sense of ownership and accountability A relentless drive to deliver results and help customers win A collaborative spirit and a willingness to go above and beyond for the team Preference for in-person collaboration and a vibrant office culture Perks & Benefits Delicious catered lunches, dinners, and premium coffee every workday Comprehensive health, dental, and vision coverage 401k retirement plan Unlimited paid time off – we trust you to balance work and life Exciting team retreats, travel opportunities, and regular social events Who You Are 5+ years of experience building and scaling modern web applications (ideally with Ruby on Rails and React/Typescript) Strong background in designing APIs and integrating complex systems Experience with cloud infrastructure (AWS, Kubernetes a plus) Passion for solving real-world problems and delivering impactful products Thrive in fast-paced, early-stage environments and enjoy wearing multiple hats Excellent communication skills and a collaborative mindset Bachelor’s degree in Computer Science, Engineering, or a related field preferred (or equivalent practical experience) Salary - $150,000 - $250,000 per year