Ademílson Tonato

Remote

• Train and improve frontier AI models through high-quality code curation, precise technical solutions, and detailed code reviews across JavaScript, TypeScript, Python and Node.js
• Evaluate, validate and refine AI-generated code against industry best practices for performance, scalability, maintainability and reliability
• Partner with cross-functional teams to raise enterprise-grade quality standards, developer experience and system performance for AI-powered engineering solutions

Remote

• Architected integrations connecting Firecrawl's open-source AI scraping platform to n8n, Zapier, Make, CrewAI, LangChain, LlamaIndex and Coinbase x402, accelerating enterprise onboarding and driving adoption across developer workflows
• Shipped orchestration and monitoring dashboards with Next.js, Zod, Supabase, Tailwind CSS and Stripe; improved real-time job health and alerting, cutting operator time-to-insight and raising task success rates
• Hardened reliability with idempotent jobs, retry/backoff and observability across Node.js/TypeScript on Express; Docker-containerised with GitHub Actions CI/CD, maintaining SLAs under traffic spikes
• Drove developer-centric API and SDK improvements with schema-first parsing and integration patterns, shortening time-to-value for enterprise pilots

Remote

• Scaled a marketplace handling 2.5M orders/year and ~125k customers/month: improved checkout conversion +1.6pp and reduced p95 API latency -22% via TypeScript refactors, Redis service-layer caching behind gRPC, and CI/CD optimisations
• Led an 8-engineer cross-functional squad to >90% OKR attainment, cutting cycle time -28% by instituting RFCs, feature flags and automated CI gates
• Raised test coverage to 85% with Jest/Cypress and cut production incidents -37% through error budgets and on-call playbooks
• Drove +48% active-merchant growth partnering with product and ops on merchant admin features; standardised micro-frontend architecture for long-term maintainability

Remote

• Delivered merchant admin workflows (bulk import, validation, onboarding status) in TypeScript/Vue/GraphQL, directly contributing to +48% active-merchant growth and reducing lifecycle friction
• Implemented Module Federation for admin surfaces enabling domain-based independent deploys, lifting deploy frequency 3× and cutting rollback MTTR -60%, with weekly release trains and safe canary rollouts
• Standardised GraphQL schemas and client patterns (pagination, error contracts, caching), reducing merchant-data support escalations -35% across 4 services

Remote

• Owned frontend architecture for LeadSparK, an enterprise CRM used by 700+ automotive clients (Ford, BMW). Led the TypeScript migration, reducing runtime errors by 45% and build times by 22%
• Standardised design system components, increasing UI reuse +60% and reducing CSS payload -35% with Tailwind CSS; added Cypress e2e and Jest suites to stabilise releases

Remote

• Managed a 5-engineer team delivering Online Test Drive Booking across 30+ markets; supported ~250k bookings/month with load-balanced auto-scaling (3 regional clusters) and improved LCP -35% / CLS 0.05 via Vue SSR, code splitting and image optimisation
• Reduced booking drop-offs -18% through A/B testing and analytics-driven UX changes; co-shaped design system standards, cutting component defects -30% and accelerating feature time-to-ship -25%

Lisbon, Portugal

• Built web and digital marketing solutions for enterprise clients including the ANF National Pharmacy Association (pharmacy robot integration)

São Leopoldo, Brazil

• Delivered a retail management app deployed across 900+ physical stores for Via Varejo (Casas Bahia and Pontofrio), Brazil's largest retailer

Canoas, Brazil

• Built full-stack features across ERP, hybrid mobile and web platforms using PHP, JavaScript and MySQL