Overview I am seeking an experienced software developer to deliver Phase 1 of a research-grade macOS-native options analytics application. This phase is not about UI polish or trading automation. The goal is to de-risk the hardest parts early: Schwab API data integrity, trade/position grouping, and an analytics-ready architecture that can support advanced volatility, Greeks, and Monte Carlo analysis in later phases. This is a data and analytics foundation build, not a full application yet. Phase 1 Scope (Fixed & Explicit) In Scope 1. Native macOS application skeleton (Python preferred; alternatives must be justified) 2. Charles Schwab / thinkorswim Trader API integration A. Sandbox + production access B. Historical trades C. Open/closed positions D. Options chains, prices, IV, API-provided Greeks 3. Trade and position grouping a. Multi-leg option structures treated as coherent positions b. Not raw fills only 4. Local data storage a. Schema designed for intratrade sampling and Monte Carlo reuse b. Persistence across sessions 5. Architecture & data flow documentation API → storage → analytics → UI boundaries 6. Validation plan How data and calculations will be reconciled against thinkorswim Explicitly Out of Scope (Phase 1) Order entry or trade execution Trade automation or signals Monte Carlo simulation Advanced Greeks calculations UI/UX polish Web or mobile versions (These are planned for later phases.) Deliverables Running macOS application with verified Schwab data ingestion Clean, documented codebase Architecture diagram + data flow explanation Local storage schema documentation Known limitations and assumptions Timeline & Budget Fixed price: $900 USD Timeline: 3–4 weeks Milestone-based acceptance One revision of architecture and one revise-and-retest of the Schwab ingestion layer are expected. Ideal Developer Profile You are a strong fit if you have: Experience with financial data systems or trading platforms Comfort working with options data (multi-leg trades, Greeks, IV) API integration experience (broker APIs a plus) Ability to design analytics-first architectures Willingness to explain tradeoffs, limitations, and validation methods Familiarity with Schwab or thinkorswim APIs is a strong plus but not required. How to Apply Please include: Relevant experience (financial or analytics-heavy projects preferred) Proposed high-level architecture for Phase 1 Confirmation of availability within the 3–4 week window Any assumptions or risks you see early This project is for an experienced options trader and prioritizes accuracy, transparency, and extensibility over visual polish. Successful completion of Phase 1 will lead directly into additional paid phases.