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Fullstack Software Engineer at Mosaic | New York City

MosaicNew York City
On-site Full-time

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Experience Level

Mid to Senior

Qualifications

Ideal candidates should possess a strong foundation in software engineering principles, experience with both frontend and backend technologies, and a passion for building scalable applications. You should have proficiency in programming languages such as JavaScript, Python, or similar, along with familiarity with frameworks like React, Node.js, or equivalent. Excellent problem-solving skills and the ability to work collaboratively in a fast-paced environment are essential.

About the job

About Mosaic

Mosaic is an innovative, AI-driven deal modeling platform tailored for private markets, utilized by top-tier investors and advisors such as Warburg Pincus, CVC, New Mountain, and Evercore. Our platform automates and standardizes essential deal analyses—including LBOs and DCFs—enabling investment teams to accelerate their processes, minimize spreadsheet errors, and focus on strategic investment decisions.

At Mosaic, we merge deterministic, rules-based calculations with advanced AI capabilities to produce replicable, audit-ready outputs, trusted by private equity, private credit, and investment banking teams across multi-million dollar transactions.

We are dedicated to creating the AI-driven operating system for the world’s most sophisticated investors and their advisors. As we rapidly expand, we are seeking talented professionals across engineering, product, customer enablement, and go-to-market teams.

This is an exceptional opportunity for those eager to influence the convergence of high finance and technology, shaping the future of the industry for years to come.

Learn more about our journey:

About the Role

As a Fullstack Engineer at Mosaic, you will create product experiences essential for investors and bankers engaged in high-stakes deal processes. Your responsibilities will span the entire technology stack—from developing sleek, user-friendly interfaces to building robust backend services that facilitate modeling, data ingestion, collaboration, and workflow automation.

This position is designed for builders who crave real ownership. You will contribute to feature development from inception to deployment, closely collaborating with product and design teams, while helping to lay the technical groundwork for a platform relied upon in mission-critical situations. You will face challenging tasks such as structured financial computations, document ingestion, compliance, permissions management, real-time collaboration, and performance optimization at scale.

About Mosaic

Mosaic is at the forefront of technological innovation in the finance sector, providing cutting-edge solutions that empower investment professionals to operate efficiently and effectively. Our commitment to excellence and continuous improvement drives our mission to revolutionize how financial modeling is approached within private markets.

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