Software Engineer

The role

You will build product experiences for investors and bankers by working across the full stack. You will own features from design to deployment and improve core system architectures for modeling and analysis.

What you will do

• Own features from idea to design, implementation, testing, and deployment
• Build intuitive, polished UI workflows
• Ship backend APIs and services
• Improve the architecture of core systems powering modeling and analysis
• Write clean, maintainable, well-tested code
• Ensure performance and reliability for workflows
• Build with auditability and correctness in mind
• Define patterns for permissions, versioning, and reproducibility
• Partner with product, design, and GTM teams
• Participate in code reviews, technical design discussions, and system planning

Required qualifications

• 2–6+ years of experience building modern web applications
• Comfortable working across frontend + backend and owning features end-to-end
• Experience building clean UIs with modern frameworks
• Experience building APIs and services (Node, Python, Go, etc.)
• Strong data modeling instincts and comfort working with relational databases
• Familiarity with cloud infrastructure and production systems
• Self-starter who thrives in fast-moving, unstructured environments
• Clear communicator who enjoys working cross-functionally

Nice to have

• React preferred
• Experience building tools for finance, analytics, or high-compliance workflows
• Familiarity with AI product patterns (LLMs, agents, structured extraction)
• Experience with workflows involving spreadsheet-like interactions
• Exposure to observability tooling, performance profiling, or infra work

Benefits

• Health, vision & dental coverage
• Unlimited PTO
• Team building events, offsites, and happy hours
• Early-stage start-up equity package

About the company

Mosaic is the AI-driven deal modeling platform for private markets, used by leading investors and advisors. The company aims to build the AI-driven operating system for the world's most sophisticated investors.