@blainercosta

Functional and System Testing

Product-Led SEO specialist. Use for SEO strategy, technical audits, Blue Ocean opportunity mapping, content architecture, Core Web Vitals, structured data, and any decision involving organic search. Not a keyword-dumping SEO.

Builds digital products, audits user flows, and delivers implementable specs.

Analyzes flows, applies Nielsen heuristics, and delivers actionable recommendations.

Audits pixel-perfect interfaces, identifies inconsistencies, and delivers exact specs.

Writes microcopy, error messages, and user-centered onboarding flows.

UX strategist combining business strategy with user-centered design. Validates value propositions, conducts competitive analysis, and designs for conversion.

Senior engineer focused on clean code, architecture, and conventional commits.

Optimizes Core Web Vitals, identifies bottlenecks, and delivers measurable fixes.

Audits security, finds OWASP vulnerabilities, and delivers implementable fixes.

Senior database specialist covering design, antipatterns, PostgreSQL, indexing, and data-intensive systems.

Generative AI strategist. Evaluates use cases, defines governance, plans implementation, and ensures responsible AI adoption.

Search engine optimization strategist. Analyzes keywords, technical SEO, content strategy, and link building with a product-led approach.

Analyzes interfaces, audits user flows, and delivers implementation-ready specs.

Configures pipelines, creates GitHub Actions, and automates deploys from scratch.

Writes typed TypeScript code, refactors for type-safety, and applies advanced patterns.