**Kelvin Amancio**

**Senior Full Stack Software Engineer**
[kelvin013@gmail.com](mailto:kelvin013@gmail.com) | Portfolio: [kamancio.dev](https://kamancio.dev) | Github: [KelvinAmancio](https://github.com/KelvinAmancio) | LinkedIn: [kelvin-amancio](https://www.linkedin.com/in/kelvin-amancio-3591341a2) | Sao Paulo, BR

**SUMMARY**

* Senior Full Stack Software Engineer with 7+ years delivering cloud-native applications across startups and enterprise, from distributed credit engines on GCP to multi-tenant SaaS platforms on Supabase and Vercel.
* Specialized in TypeScript, Next.js, and PHP microservices, with a track record of reducing complex workflows from hours to seconds, owning systems end-to-end, and driving architectural decisions that scale across teams.

**SKILLS**

**Programming & Frameworks:** TypeScript, JavaScript, NodeJS, PHP (Laravel, Slim, Hyperf), Next.js, React, VueJS, HTML/CSS

**Databases:** MySQL, PostgreSQL, Redis, Elasticsearch, MongoDB.

**Cloud & DevOps:** AWS (Lambda, EC2, S3, Elastic Beanstalk, SQS, SNS), GCP (Cloud Run, Cloud Tasks, Pub/Sub), Supabase, Vercel, Fly.io, Docker, Jenkins, GitLab CI, GitHub Actions, Linux, Nginx

**Practices & Tools:** API Development & Integration, Microservices Architecture, Agentic Software Development, Automated Testing (Unit, Integration, E2E with Playwright), PDF Parsing, WebSockets, Web Scraping, Git, TDD

**WORK EXPERIENCE**

**Cirqul Ventures Inc**
*Senior Full Stack Software Engineer	Oct 2025 - Present*

* Architected a private GitHub/npm package to centralize database schema, migrations, seeds, types, and clients across all Next.js apps, eliminating schema drift and enabling automated version bumps via Conventional Commits and GitHub Actions.
* Became the team's primary Supabase authority, defining company-wide standards for edge functions, declarative schemas, RLS policies, DB triggers/webhooks, cron jobs, and queues, eliminating inconsistent usage patterns across the codebase.
* Defined and implemented multiple authentication flows (password-based, magic links/OTPs, anonymous sign-ins) and established local development and CI/CD deployment strategies, reducing onboarding friction for new engineers.
* Delivered end-to-end features, from DB schema to frontend UI, integrating payment providers, analytics, and fly.io for self-hosted Edge Functions, including agentic software workflows that automate multi-step business processes.

**Meta IT North America**
*Senior Full Stack Software Engineer	July 2024 - Sept 2025*

* Engineered and maintained enterprise-level systems serving users across global regions using PHP, NodeJS, TypeScript, Redis, and Elasticsearch, contributing to platform reliability at scale.
* Modernized legacy architectures by migrating to containerized cloud solutions on AWS (Lambda, EC2, S3, Elastic Beanstalk, SQS, SNS) using Docker and Jenkins, improving deployment consistency and system maintainability.
* Centralized CI/CD pipelines via AWS EC2 and GitHub Actions, enabling Unit, Feature, and E2E test execution in a shared environment and cutting per-developer test setup overhead.
* Partnered with cross-functional teams across time zones to ship multi-region features, maintaining stability for a global user base with zero-downtime deployments.

**MOVA Credit as a Service**
*Full Stack Software Engineer	Feb 2019 - July 2024*

* Designed and maintained a distributed credit engine using PHP microservices (Hyperf, Slim, Laravel) deployed on GCP (Cloud Run, Cloud Tasks, Pub/Sub) with MySQL, Redis, and Elasticsearch.
* Automated manual credit analysis workflows, reducing processing time from 2 hours to 30 seconds and enabling near real-time decision-making.
* Led the successful transition from legacy monolithic systems to modern microservices architecture, which now supports multiple teams utilizing the new system for developing client-specific features and enhancements.
* Delivered a client solution combining web scraping, PDF parsing, and API integrations in a NodeJS based platform, unlocking an immediate revenue stream of $4,000.

**Simple Juris**
*Full Stack Software Engineer	July 2019 - Dec 2021*

* Built the company’s platform from the ground up using React, NodeJS, PostgreSQL, Redis, and AWS Lambda, supporting the transition from MVP to production-ready and acquisition of the first 20 paying customers.
* Developed microservices for document parsing, lawsuit tracking, invoice generation, and automated email delivery, enabling scalable client onboarding.
* Contributed to securing investor readiness by delivering a reliable, maintainable, and extensible backend architecture.

**EDUCATION**

Federal University of Itajuba | B.Comp.E., Bachelor of Computer Engineering     *Feb 2014 - Dec 2020*

**LANGUAGES**

* English - Advanced (Fluent)
* Portuguese - Native Speaker