Posted Jul 11, 2026

Senior Full Stack MERN Developer — Founding Engineer (New SaaS Product)

Apply for this Role →
Remote Leverage, a talent startup based in California, USA, is building and launching a new, independent SaaS platform backed by a proprietary talent dataset, and we’re hiring a Senior Full Stack MERN Developer to join as a founding engineer. This is a remote role focused on building a standalone product with external customers, real scale, and long-term ambition — not client work and not internal tooling. About the Product We’re developing a proprietary software platform designed to transform how companies discover, evaluate, and hire remote talent at scale. The product already has a functioning MVP and early validation. Your role will be to take it from “working” to production-ready — ensuring it is stable, scalable, secure, and polished enough for a public launch and real-world usage. This is a hands-on, execution-heavy role with significant ownership and influence over the product’s technical direction. What You’ll Be Responsible For • Taking an existing MVP and bringing it to market-ready, production quality • Designing and refining backend APIs and data models • Improving frontend UX, usability, and performance • Ensuring the system is stable, secure, and scalable • Identifying and resolving edge cases, bugs, and technical debt • Making pragmatic architectural decisions that support long-term growth • Working closely with the founder to move fast while maintaining engineering discipline • Writing clean, maintainable, well-structured TypeScript • Applying a product-minded engineering approach, not just feature delivery • Thriving in an environment with ambiguity, iteration, and evolving requirements Must-Have Skills & Experience • 5+ years of professional experience as a Full Stack Developer or similar role • Strong experience with TypeScript across frontend and backend • Solid React experience building production-grade user interfaces • Experience building Node.js / Express APIs • Experience working with MongoDB in production environments • Proven track record of shipping and maintaining real-world SaaS products • Ability to move a product from “it works” → reliable, scalable, and usable • Strong product-minded engineering mentality • Comfortable working without rigid specs and iterating quickly • Fluent English, written and verbal • Professional, collaborative, and proactive • Open to feedback and continuous improvement This Role Is a Great Fit If You • Enjoy taking ownership of real products from early stages • Like working close to founders and decision-makers • Have shipped SaaS products before and know where MVPs tend to break • Care deeply about code quality, maintainability, and scalability • Want meaningful impact on a product with real market potential Interested? Apply now! Apply Now Apply Now