Ricardo Nunes

Senior Full-Stack Engineer

Available for contract · Brooklyn, NY

Building production systems for US fintech, civic tech, and SaaS companies for 8+ years. Currently in Brooklyn, NY. Available for contract and freelance work.

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Experience

Memo 2022–2025

Senior Full-Stack Engineer

Brooklyn, NY (remote)

Led front-end architecture for analytics dashboards used by enterprise clients.

  • Established end-to-end testing culture using Cypress, reducing reported bugs by 50%.
  • Shipped a PDF report generation pipeline (Node.js, Puppeteer, AWS Lambda) that became an upsell driver and increased user engagement by 40%.
  • Implemented Redis-based caching layer that improved page load times across critical user flows.
  • Integrated Auth0 SSO across CRUD endpoints, balancing security rigor with UX continuity.

TypeScript · React · Redux · Node.js · AWS Lambda · Redis · PostgreSQL · Cypress · Puppeteer

BlueLabs 2020–2022

Senior Software Engineer

Remote

Led monolith-to-microservices migration on a civic tech platform.

  • Reduced time-to-interaction from 20s to 0.5s by extracting task-specific microservices from a monolithic framework.
  • Implemented Redis caching to alleviate primary data source bottlenecks, improving overall system performance ~30%.
  • Extended data service compatibility with additional client components.

TypeScript · Node.js · Redis · PostgreSQL · microservices architecture

Macquarie Group 2019–2020

Software Engineer

New York, NY

Migrated a legacy financial service to a modern, scalable cloud infrastructure.

  • Led a small team through full migration cycle.
  • Provided evidence-based performance benchmarks and automated analysis enabling data-driven optimization decisions.
  • Maintained service continuity throughout migration.

AWS · cloud infrastructure · performance instrumentation

Stack

Languages
TypeScript, JavaScript, Python, Ruby
Front-end
React, Redux, modern state management, Tailwind, responsive design
Back-end
Node.js, REST APIs, GraphQL, microservices, system design
Data
PostgreSQL, MySQL, Redis, Elasticsearch
Infrastructure
AWS (Lambda, RDS, S3), Docker, Kubernetes, CI/CD
Practices
TDD, end-to-end testing (Cypress), performance optimization, cloud migration, system architecture

About

I take ownership of systems end-to-end — from front-end performance and API design to infrastructure and the integration work between them. Comfortable joining established teams as a senior contributor or leading small projects from scratch.

Working hours overlap with US Eastern and Central time. I respond fast and ship clean.

Availability

Based in Brooklyn, NY. Relocating to Brazil in August 2026, continuing remote work with full overlap to US time zones.

Available for contract and freelance engagements throughout the transition and beyond.

Contact

Email
sanunes.ricardo@gmail.com
GitHub
github.com/dlgiant
LinkedIn
linkedin.com/in/rick-nunes

Best for: contract roles, technical consulting, performance audits, system migrations.