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fintech

Open-Source Business Management Platform (ERP/CRM/HRM)

The storage for general purpose public information relating to the Cryptocurrency Advocate and its online representation.

Internal Credit is an AI-powered, modular financial platform that enables users to borrow against their own savings while continuing to earn returns on their deposited capital. Designed around self-collateralized lending, the platform allows account holders to access up to 70% of their account value, receive AI-guided financial insights, and preserve long-term wealth through a flexible, secure, and extensible banking architecture. https://roxanneardary.com/internal-credit/

甲斐みらい銀行 (架空の地銀) 次期勘定系 Project FUJI。GitLab Ultimate で計画→開発→セキュリティ→デプロイ→監査を 1 本で見せるデモ。

Next-generation core banking system (Project FUJI) of Kai Mirai Bank, a fictional Japanese regional bank. A single demo that shows plan → develop → secure → deploy → audit with GitLab Ultimate.

Solvra is an open-source financial modeling engine designed to simulate loans under a controlled, transparent amortization system. It applies a capped-interest rule based on a 15-year maximum effective interest window and redistributes total interest evenly across the full loan term, producing predictable, linear payment structures for scenario analysis, affordability testing, and structured financial planning. https://roxanneardary.com/solvra/

Minimal event-driven trading-bot skeleton in pure Python — strategy, risk manager, and broker as pluggable components.

Credential-free reference examples for the Schwab Trader API — OAuth2 login flow, market-data quotes, and bracket order payloads.

Dependency-free technical-analysis utilities in pure Python — ATR, VWAP, RSI and order-flow, fully typed and unit-tested.

OrgBudget is a modular standard for organizational budgeting that enables departments to manage budgets independently while maintaining centralized reconciliation, transparent reporting, financial accountability, and organization-wide oversight. It supports AI-assisted planning, forecasting, analysis, and reporting while keeping financial decisions under human authority. https://roxanneardary.com/orgbudget/

BNPL platform landing rebuilt from a 2023 Gulp/SCSS archive onto Next.js 16, React 19, TypeScript and Feature-Sliced Design.

Backend engineering, AI infrastructure, real-time systems and blockchain development.

FinAxis is an AI and LLM-ready regulatory intelligence specification designed to help lending businesses understand federal, state, and local legal requirements. It provides modular guidance for lending products, licensing, disclosures, forms, pricing, underwriting, compliance, servicing, collections, regulatory changes, and personal and business lending. https://roxanneardary.com/finaxis/

Paystead is a locally hosted financial management platform that brings multiple bank accounts, bills, payments, statements, checks, and financial records into one unified interface. AI assists with organizing information and carrying out authorized financial tasks while keeping the user in control of approvals, permissions, and financial decisions. https://roxanneardary.com/paystead/

Offline PDF to XLSX/CSV/JSON converter for Yandex Bank statements (deposit Сейв + card account). Конвертер банковских выписок Яндекс Банка из PDF в Excel — всё локально.

Offline PDF to XLSX/CSV/JSON converter for Ozon Bank (ОЗОН Банк) statements. Конвертер банковских выписок Озон Банка из PDF в Excel — всё локально.

Portfolio optimization and analytics API (Spring Boot)

BalanceForward is an open source deterministic financing specification that helps businesses design sustainable debt-refinancing solutions based on a borrower's income, cost of living, repayment capacity, qualifying debt, and collateral. With a fixed 5% interest rate, maximum 50% collateral advance rate, and 20-year maximum term, BalanceForward provides a modular framework for predictable, transparent, and borrower-centered financing. https://roxanneardary.com/balanceforward/

DecisionAI is an open-source AI financial intelligence platform that simplifies investment disclosures, explains shareholder voting, and analyzes portfolio risk through trend, forecasting, and regulatory intelligence. It continuously tracks market data, innovation progress, and evolving laws to provide forward-looking insights about the foreseeable future. Built for transparency and explainability, it helps users make informed financial decisions with clear reasoning, scenario modeling, and up-to-date regulatory awareness. https://roxanneardary.com/decisionai/

Blockchain specifications define an institutional blockchain system built on distributed custody using Multi-Party Computation (MPC), where no single entity can access or control private keys. All transactions are governed through policy engines, role-based permissions, and full audit logging instead of centralized custody. It supports tokenization and multi-chain interoperability for real-world assets like real estate and financial instruments, with deployment across on-prem, sovereign cloud, and hybrid environments. The result is a secure, auditable infrastructure for programmable assets with built-in compliance and institutional control. https://roxanneardary.com/blockchain/