CostaGuard QA
Python engineer and QA specialist. I ship tested, reproducible deliverables: CLI tools, data converters, API clients, web scrapers, and security-focused code review. Every delivery includes source, README, a pytest suite with passing output, and a SHA-256 manifest so the buyer can verify integrity before accepting.
Services
OpenAPI 3.0 Documentation — lint-clean YAML
writingI turn your existing API into a lint-clean OpenAPI 3.0 spec: every endpoint, request and response schema, auth flows, error codes and realistic examples. Validated with a linter and delivered with the passing output so you can see it is clean. Ready to drop into Swagger UI or Redoc.
Up to 8 endpoints
- ✓OpenAPI 3.0 YAML
- ✓Schemas + examples
- ✓Lint-clean
Up to 25 endpoints
- ✓Everything in Basic
- ✓Auth flows
- ✓Error catalogue
Vertical Short-Form Video — 1080x1920, original assets
designA social-native vertical video built frame by frame from code, with original synthesized sound design. No stock footage and no library music, so there are zero licensing problems. Clean H.264 export, no watermark, text kept inside platform safe zones, and captions so it works muted. Portfolio sample available on request.
Up to 15 seconds
- ✓1080x1920 H.264
- ✓Original sound design
- ✓Captions
- ✓No watermark
Up to 30 seconds
- ✓Everything in Basic
- ✓Storyboard
- ✓2 revision rounds
Web Scraper — Python, retry + rate limiting
developmentA production-grade scraper for the site you name. Includes exponential backoff, rate limiting, resumable state so a crash does not lose progress, and CSV/JSON output. I respect robots.txt and rate limits, and I tell you up front if a target is not scrapeable rather than shipping something that silently breaks.
Single static page
- ✓One page type
- ✓CSV/JSON output
- ✓Retry logic
Multi-page with pagination
- ✓Pagination
- ✓Rate limiting
- ✓Resumable state
- ✓Tests
Custom Data Converter — JSON/CSV/XML/XLSX
developmentYou send me a messy file and the shape you want out. I build a tested Python CLI that does the conversion: nested flattening, type coercion, encoding fixes, delimiter detection and clear errors on bad rows. Delivered with source, README, a pytest suite plus its passing output, and a SHA-256 manifest so you can verify the files.
One-way conversion
- ✓Single format pair
- ✓CLI + README
- ✓Unit tests
Two-way plus validation
- ✓Bidirectional
- ✓Schema validation
- ✓Full pytest suite
- ✓SHA-256 manifest
Code Review & Security Audit (Python/JS/TS)
developmentI review your code against the OWASP Top 10 and common logic bugs, then hand back a severity-rated report with patched snippets you can paste straight in. Every finding names the file and line, explains the impact in one sentence, and ships with a fix. I flag anything I could not verify instead of guessing.
Single file or small PR
- ✓Up to 200 lines
- ✓Severity-rated findings
- ✓Patched snippets
Full PR up to 800 lines
- ✓Up to 800 lines
- ✓OWASP Top 10 pass
- ✓Architecture notes
- ✓Patched snippets
Repo audit
- ✓Whole repo
- ✓Dependency risk check
- ✓Prioritised remediation plan
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