Kelwin Richard
Software Engineer
Full-stack engineer focused on building scalable systems, AI-powered applications, and robust architectures that deliver real impact.
About me
Building products that matter
I'm a full-stack Software Engineer with 5+ years of experience building scalable systems, intelligent applications, and robust architectures. Currently working at Cogna as a Mid-Level Software Engineer, where I focus on AI-powered products and microservices.
My background spans the entire stack — from building RESTful APIs with NestJS and Go, to crafting responsive UIs with React and Next.js, to integrating LLMs and deploying on AWS and GCP. I hold a Bachelor's in Computer Engineering (Summa Cum Laude) and I'm completing a Postgraduate in Generative AI.
Passionate about clean code, SOLID principles, and delivering real value through technology.
5+
Years of experience
3
Companies
10+
Products shipped
2
Cloud platforms
Career
Work Experience
Cogna
CurrentMid-Level Software Engineer
2025 — Present
- ▸Developed microservices using TypeScript with clean architecture and SOLID principles in a distributed systems environment.
- ▸Built an internal tooling platform using NestJS (backend), Next.js (frontend), and Docker-based environments.
- ▸Designed and implemented AI-powered chatbot solutions with conversational flows and LLM integrations.
- ▸Built an AI image generation module integrated with registered personas.
- ▸Created automated workflows using n8n, integrating internal systems and third-party services.
- ▸Developed an event-driven logging system capturing behavioral data in Google BigQuery (GCP).
Clube Certo
Junior Software Engineer II
2024 — 2025
- ▸Led mobile development, overseeing architecture decisions for a React Native (Expo) app with push notifications and geolocation.
- ▸Developed an internal CRM using Vue 3 on the frontend and Node.js with MVC architecture on the backend.
- ▸Set up CI/CD pipelines for automated publishing to Google Play Store and Apple App Store.
- ▸Managed AWS cloud services to support application infrastructure and scalability.
Grupo Fácil
Junior Software Developer
2022 — 2024
- ▸Built and maintained frontend applications using React with TypeScript, focusing on component reusability and performance.
- ▸Created and maintained component documentation using Storybook.
- ▸Developed RESTful APIs following Hexagonal Architecture and microservices patterns.
- ▸Worked in Agile teams using SCRUM methodology for sprint planning and delivery.
Technologies
Skills & Tools
Backend
Frontend
AI & Integrations
Architecture
DevOps & Cloud
Methodologies
Portfolio
Featured Projects
A selection of products and systems I built across my career — spanning AI, platforms, mobile, and data engineering.
Internal Tooling Platform
Full-featured internal platform built with NestJS and Next.js, enabling teams to manage workflows, integrations, and AI-powered features through a unified interface.
AI Chatbot with LLM Integration
Conversational AI solution with multi-turn dialogue, persona management, and LLM integrations. Designed for enterprise use with reliability and consistency at scale.
AI Image Generation Module
AI-powered image generation system integrated with registered user personas, allowing teams to generate and edit images directly within the platform.
Event-Driven Analytics System
User behavior logging pipeline capturing real-time events and storing structured data in Google BigQuery for analytics, monitoring, and product insights.
React Native Mobile App
Cross-platform mobile app built with Expo featuring push notifications, geolocation, and CI/CD pipelines for automated publishing to both app stores.
Contact
Let's Work Together
Have a project in mind or want to discuss an opportunity? I'd love to hear from you.
Get in touch directly
Currently based in Belo Horizonte, Brazil
Open to remote positions worldwide and relocation opportunities.