Monday Wealth

We built Monday Wealth as a Go backend with separate Next.js dashboards, organised around a single valuation engine with every formula documented.

• Three portals — client, advisor and admin views, with advisor–client linking, guided onboarding and full English and Thai localisation.
• Valuation engine — replays each portfolio's transactions day by day on the Bangkok calendar, carries the last known price forward on days without a new quote, and converts foreign-currency prices to Thai baht using stored FX rates.
• Performance analytics — XIRR (Newton–Raphson with a bisection fallback), time-weighted return and annualised return, plus a benchmark comparison that replays the client's actual cash flows into the benchmark so both lines are measured on the same money.
• Planning tools — a DCA versus lump-sum backtest for baskets of up to ten assets, a retirement planner with base, worst-case and step-up savings scenarios, and a Thai personal income tax calculator.
• Statement import — imported fund transactions are matched to known assets in layers (saved links, exact and normalised symbols, Thai SEC fund names), and uncertain matches go to an admin review queue.
• Market data — a scheduled job syncs Thai SEC fund data and US market prices early every morning, after the US close, and resumes from its last checkpoint if a run fails.
• Platform — Ory Kratos authentication, Casbin role-based access control, Redis, RabbitMQ workers, and Kubernetes with default-deny network policies and Prometheus monitoring.