Liquidity.io
Cap Table Management Platform
Liquidity.io is the cap table and equity-management product in the Satchel Inc FinTech suite. Founders, CFOs, and investors use it as the single source of truth for ownership — modeling rounds, issuing shares, tracking vesting, and producing audit-ready financial reports. I worked on the platform end-to-end across React, Redux Toolkit, and Node.js services.
Role
Full Stack Developer
Industry
Equity & Cap Table Management
Year
2023–2025
Duration
20+ months
At a Glance
10,000+
API Requests / Day
99.9%
Uptime SLA
50+
Redux Components
Enterprise
Active Tenants
The Problem
What needed solving
Equity management is one of the highest-stakes workflows in any company — every share issuance, vesting event, and ownership change has legal and financial implications. The platform needed to support complex multi-class cap structures, real-time collaboration between founders and finance teams, audit-quality reporting, and strict access controls — without sacrificing the responsive feel of a modern SaaS product.
The Approach
How I built it
Architected the React frontend around 50+ feature-scoped Redux Toolkit slices with normalized entities, RTK Query for server state, and selectors that keep large cap tables performant on re-render.
Designed reusable equity primitives (share class, grant, transaction) so issuance, transfer, vesting, and reporting flows compose from the same domain model.
Built Node.js + Express services with PostgreSQL transactions for every ownership-changing operation, ensuring cap tables can never enter an inconsistent state.
Implemented role-based access control with row-level checks — founders, employees, investors, and auditors each see a tailored, permission-aware view of the same dataset.
Containerized services with Docker and deployed to AWS behind a load balancer, with structured logging and CloudWatch alarms for the high-traffic endpoints.
Tech Stack
Tools used on this project
Frontend
Backend
Database
Infrastructure
Tooling
Outcomes
Results that matter
10,000+ requests/day
Sustained throughput
The API tier comfortably handles 10K+ daily requests across cap-table reads and ownership-changing writes without degradation.
99.9% uptime
Production reliability
Health checks, graceful restarts, and AWS auto-scaling keep the platform within enterprise SLA targets.
Faster cap-table loads
Optimized rendering
Memoized selectors and virtualised tables eliminated re-render storms on cap tables with hundreds of stakeholders.
Lessons
What I took away
- →Treat money-touching writes as transactional first, UX second — every ownership change is a single PostgreSQL transaction.
- →Normalised Redux entities are the difference between a snappy cap table and a frozen browser tab.
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I'm available for full-stack engagements — React, Next.js, Node.js, PostgreSQL, AWS. Let's talk through what you're building.