Platform Development
Napa builds and maintains web and mobile software for capital markets and fintech. Agents write the code; senior engineers decide what ships.
Our Approach
One senior team, from the first plan to long-term support.
Plan and design
A focused discovery phase sets scope and technical approach, and a clickable prototype lets you test the idea before major build work begins.
Build and modernize
Secure, maintainable code from AI agents, reviewed by a senior engineer before it merges, and legacy systems upgraded in steps instead of rewritten from scratch.
Integrate and extend
Stable APIs and event-driven links to market data, payment providers, and internal services, so every team works from one source of truth.
Audit and improve existing code
Agents read every line of an existing codebase, and senior engineers turn what they find into a prioritized plan of what to keep, refactor, or replace.
AI features in your product
Document extraction, search, assistants, and workflow automation, with the logging, permissions, and audit trails regulated businesses need.
Maintain and support
Ongoing enhancements, fixes, and support keep systems stable, so your team isn't pulled back into firefighting.
Thinking about building it in-house?
Complex software can drain even strong teams, especially outside their core experience.
Mission-critical systems need architecture, security, testing, deployment, and long-term support, not just initial code.
Internal teams already carry product, operations, and regulatory work, so side projects turn into delays and overruns.
Napa brings a team that has shipped and supported countless systems, and a way of working that gets there sooner. You keep the product vision; we bring the engineering depth to ship safely.