Pentagon Investments

Overview

Pentagon Investments is a wealth-management platform that lets investors put money into mutual funds two ways — Systematic Investment Plans (recurring) and lump sums (one-time) — and hold fixed-return payout contracts that pay out on a schedule. An investor portal handles onboarding, KYC, fund discovery and portfolio tracking, while a separate admin back-office manages the fund catalog, NAV pricing, investor accounts, payouts and approvals. Underneath is a Node/Express + MongoDB API spanning 65 data models — the full investment domain from fund fact sheets to redemption requests.

The challenge

Investment products are unforgiving to model: an SIP is a recurring charge that buys fund units at the current NAV, a lump sum is a one-off allocation, and a payout contract owes investors money on a fixed cadence — each with its own holdings, transactions, redemptions and audit trail. On top of that the platform has to take real money safely (recurring card payments), onboard investors through KYC, produce legally-worded contracts, and run scheduled payouts reliably without ever double-paying. It needed to be both a polished investor product and a complete operational back-office.

What I built

• Dual investment engines — SIPs (recurring) and lump sums (one-time) — each with its own allocations, holdings, orders, transactions and redemption flows, priced against fund NAV from a fund catalog with risk ratings, lock-in periods and fact sheets.
• Fixed-return payout contracts driven by a node-cron engine that scans active contracts, schedules upcoming payout cycles and raises admin-approval requests — written to be idempotent so re-runs never create duplicate payouts.
• Stripe-powered payments: customer and subscription management for recurring SIP charges, wired through a dedicated payment service with publishable-key handoff to the front-end.
• Automated PDF contract generation via PDFKit — dynamically rendered lump-sum investment contracts with company logo and signature, then delivered to investors by email.
• A guided KYC onboarding flow with multi-step signup progress tracking, identity-document upload, bank-account and beneficiary management, plus a referral/affiliate program.
• A React 18 admin back-office (MUI + Tailwind + Recharts) for fund/NAV management, investor accounts, payouts, redemptions, support tickets and CMS — backed by a hardened Express API with JWT + Google OAuth, OTP, security-event logging, Helmet, rate limiting and Sharp-processed secure uploads.

Architecture

Outcome

A complete, deployed investment platform at pentagon.barodaweb.org — pairing an investor-facing portal with a full admin back-office over one Node/Express + MongoDB API, and automating the parts that matter most in fintech: recurring payments, contract paperwork and scheduled payouts.