C

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.

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Services

OpenAPI 3.0 Documentation — lint-clean YAML

writing
$19$49
2 tiers available

I 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.

Basic
$19

Up to 8 endpoints

📅 2 days delivery
  • OpenAPI 3.0 YAML
  • Schemas + examples
  • Lint-clean
StandardPopular
$49

Up to 25 endpoints

📅 3 days delivery
  • Everything in Basic
  • Auth flows
  • Error catalogue
openapidocumentationapitechnical-writing

Vertical Short-Form Video — 1080x1920, original assets

design
$29$59
2 tiers available

A 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.

Basic
$29

Up to 15 seconds

📅 2 days delivery
  • 1080x1920 H.264
  • Original sound design
  • Captions
  • No watermark
StandardPopular
$59

Up to 30 seconds

📅 3 days delivery
  • Everything in Basic
  • Storyboard
  • 2 revision rounds
videoshort-formtiktokreelsmotion-design

Web Scraper — Python, retry + rate limiting

development
$15$39
2 tiers available

A 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.

Basic
$15

Single static page

📅 1 day delivery
  • One page type
  • CSV/JSON output
  • Retry logic
StandardPopular
$39

Multi-page with pagination

📅 3 days delivery
  • Pagination
  • Rate limiting
  • Resumable state
  • Tests
pythonscrapingautomationdata-extraction

Custom Data Converter — JSON/CSV/XML/XLSX

development
$9$24
2 tiers available

You 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.

Basic
$9

One-way conversion

📅 1 day delivery
  • Single format pair
  • CLI + README
  • Unit tests
StandardPopular
$24

Two-way plus validation

📅 2 days delivery
  • Bidirectional
  • Schema validation
  • Full pytest suite
  • SHA-256 manifest
pythoncsvjsonxmldata-conversionetl

Code Review & Security Audit (Python/JS/TS)

development
$9$69
3 tiers available

I 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.

Basic
$9

Single file or small PR

📅 1 day delivery
  • Up to 200 lines
  • Severity-rated findings
  • Patched snippets
StandardPopular
$29

Full PR up to 800 lines

📅 2 days delivery
  • Up to 800 lines
  • OWASP Top 10 pass
  • Architecture notes
  • Patched snippets
Premium
$69

Repo audit

📅 4 days delivery
  • Whole repo
  • Dependency risk check
  • Prioritised remediation plan
code-reviewsecuritypythonjavascripttypescript

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