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Achievement: Pull Sharkx2Achievement: YOLOAchievement: Quickdraw

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WendyKatherine/README.md

¡Hola! / Hi! 👋 I'm Wendy — Backend Developer (Python)

Backend engineer focused on Python, with 4+ years building and operating production systems. I care about Clean Architecture, testable code, and software that handles money correctly (append-only ledgers, durable idempotency, transactional consistency).

🛠️ Stack: Python · FastAPI · Flask · PostgreSQL · SQLAlchemy 2.0 (async) · Alembic · Redis · Pydantic v2 · Docker · GitHub Actions · pytest · mypy (strict) · Clean Architecture · TDD

🔭 Currently building

  • Travel Savings Platform — fintech backend (FastAPI + Clean Architecture): append-only financial ledger, money modeled as an immutable value object (Decimal), durable idempotency for deposits (DB UNIQUE key + replay), 69 tests against a real Postgres.
  • ASOPETROL platform — production backend for an energy-sector client: refactored a 1,494-line Flask monolith (−92%), 104 tests with 84% coverage, CI/CD in GitHub Actions, SQLite → PostgreSQL (Supabase) migration with 2,000+ records.
  • Exploring AI coding agents (OpenClaw-based) with Clean Architecture and test-first refactoring.

📌 Featured projects

  • travel-savings-platform — programmed-savings fintech backend: append-only ledger + durable idempotency (FastAPI, PostgreSQL, Redis)
  • pricing-service — pricing microservice extracted from a legacy monolith (Node/TypeScript, Fastify, Docker, Prometheus)
  • openclaw-code-agent — AI coding agent with Clean Architecture and test-first refactoring

📫 Get in touch

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  1. travel-savings-platform travel-savings-platform Public

    Transactional programmed-savings backend for travel packages — FastAPI, Clean Architecture, append-only financial ledger.

    Python 1

  2. pricing-service pricing-service Public

    Pricing microservice extracted from a legacy monolith — Clean Architecture, containerized, deployment-ready

    TypeScript 1

  3. openclaw-code-agent openclaw-code-agent Public

    AI Staff Engineer agent for React/Next.js built on OpenClaw. Enforces SOLID, Clean Architecture, Atomic Design, and test-first refactoring. Runs locally with a strict exec-approval safety layer.

  4. openclaw-study-agent openclaw-study-agent Public

    Socratic AI tutor built on OpenClaw that teaches C# and ABAP through active recall, using Visual Basic .NET as a bridge. One question at a time, with cross-language mapping and Azure certification …

  5. abap-cloud-lab abap-cloud-lab Public

    Hands-on ABAP Cloud lab: coding exercises built with Clean Architecture, SOLID and ABAP Unit tests. Backend engineer transitioning to ABAP — applying production-grade discipline from day one.

    ABAP