Gabriel Serejo

Engenheiro de IA Generativa

Email:gabrieltfserejo@gmail.com

Phone:+55 (62) 9 9406-3442

Website:serejo.dev

Engenheiro de Software Sênior com 8+ anos de experiência, especializado na entrega de aplicações de IA Generativa e RAG em produção. Combino engenharia robusta (Vue/Nuxt, Node.js) com IA de ponta (LLMs, Bancos Vetoriais, LangChain) para construir sistemas inteligentes e escaláveis. Histórico comprovado de liderança em migrações arquiteturais e entrega de soluções de IA de alto valor para o mercado internacional.

Technical Proficiencies

• Generative AI

• RAG

• LLMs

• LangChain

• TypeScript

• Python

• PyTorch

• Prompt Engineering

• Vector Databases

• NLP

• Hugging Face

• Model APIs (OpenAI, Gemini, Anthropic)

• Self-hosted Models (Ollama, Hugging Face)

• Cloud Platforms (Azure, AWS, GCP)

• TensorFlow

• Deep Learning

• Spacy

• Pandas

• OpenCV

• R

• C++

Certifications

• Oracle AI Vector Search Certified Professional (2025)

Professional Experience

Generative AI Engineer

jun, 2024 - Present

Implanta IT Solutions

Eu implementei o 'Atlas', um chatbot de RAG para produção utilizando LangChain, Vercel AI SDK e pg-vector que unificou a documentação da empresa, acelerando significativamente o onboarding interno.
Eu desenvolvi um sistema de busca semântica de alta precisão utilizando modelos de Embedding, permitindo a normalização automatizada de produtos via NLP.
Eu arquitetei o 'Cockpit 2.0', implementando um motor de renderização dinâmica de UI-via-API com TypeScript avançado que removeu a dependência de deploys de frontend.

Software Engineer

mai, 2023 - mai, 2024

TLScontact

Eu fui o desenvolvedor principal do chatbot oficial de suporte ao cliente, supervisionando a integração de fluxos conversacionais e garantindo uma experiência de usuário fluida.
Eu liderei a migração do módulo de ajuda para uma arquitetura de 'Feature Services', provendo a escalabilidade necessária para futuras integrações de ferramentas de IA.
Eu entreguei funcionalidades críticas e mitiguei vulnerabilidades para ferramentas institucionais de visto utilizando Vue 3 e Node.js.

Software Engineer

dez, 2022 - jul, 2023

Cliqx

Eu escalonei a arquitetura front-end de uma grande aplicação de varejo (Pernambucanas) utilizando o padrão hexagonal orientado a serviços no Nuxt 3.
Eu projeta uma camada de cache de alta concorrência usando Redis e SWR, estabelecendo a base de performance necessária para aplicações intensivas em dados.
Eu migrei fluxos legados para padrões reativos modernos, aumentando a velocidade da equipe e a vazão do sistema.
Gerenciei infraestrutura em nuvem na Azure, tomando a iniciativa de provisionar e configurar instâncias de servidores além das responsabilidades de desenvolvimento.

Software Engineer

abr, 2022 - dez, 2022

UniFAJ

I developed the end-to-end user interface for the student admission application, covering all critical stages from initial registration to the completion of exams and essays.
I implemented key new features while simultaneously restructuring legacy code, applying 'clean code' principles to enhance the application's maintainability and overall quality.

Software Engineer

ago, 2021 - out, 2022

Agência Industrial

I delivered complete, end-to-end web solutions for multiple clients, managing the entire project lifecycle from UI/UX design to full-stack implementation and deployment.
I developed and launched websites for prominent local companies, including Cremozinn, establishing their digital presence in the market.
I enhanced client projects by developing and integrating small-scale AI solutions using the GPT-3 API with Python and Node.js.
Comecei a utilizar a API da OpenAI para automatizar processos repetitivos. Como frameworks especializados não existiam na época, desenvolvi minhas próprias estratégias de encapsulamento usando Regex e Zod.

Software Engineer

jun, 2019 - set, 2021

ITH Pós Graduação

I led a complete refactoring of the legacy application, a project that directly improved Google Speed Insight scores and significantly reduced advertising (ADS) expenses.
I developed and launched a new front-end application using Nuxt2, which integrated with the company's WordPress CMS to modernize the user experience and content delivery.

Projects

Atlas Chatbot & Cockpit 2.0 (RAG & Semantic Search)

– Implanta IT Solutions

I engineered "Atlas", a production-grade RAG chatbot using LangChain, Vercel AI SDK, and pg-vector that unified documentation and accelerated onboarding.
I developed a semantic cross-reference system using embedding models for automated product normalization via NLP.
I architected "Cockpit 2.0", designing a dynamic UI-from-API engine using advanced TypeScript that decoupled frontend from feature launches.

Customer Support Chatbot & Scalable Micro-Frontend Migration

– TLScontact

I was the lead developer for the official customer support chatbot, managing end-to-end integration of conversational AI flows.
I championed the migration to a "Feature Services" architecture, establishing the scalability required for real-time AI toolsets.
I oversaw security and feature delivery for institutional visa tools using Vue 3 and Node.js.

Retail Application Architecture (High-Concurrency Patterns)

– Cliqx

I managed cloud infrastructure on Azure, provisioning and configuring server instances to support high-concurrency retail applications.
I scaled the front-end architecture for a major retail application (Pernambucanas) using a service-oriented hexagonal pattern.
I engineered a high-performance Redis/SWR caching layer, providing the low-latency foundation necessary for AI-driven data apps.
I migrated legacy workflows to Nuxt 3, improving system throughput and team development velocity.

Student Admission Application

– UniFAJ

I developed the end-to-end user interface for the student admission application, covering all critical stages from initial registration to the completion of exams and essays.
I implemented key new features while simultaneously restructuring legacy code, applying clean code principles to enhance the application's maintainability and overall quality.

Web Solutions & AI Integration

– Agência Industrial

I delivered complete, end-to-end web solutions for multiple clients, managing the entire project lifecycle from UI/UX design to full-stack implementation and deployment.
I enhanced client projects by developing and integrating small-scale AI solutions using the GPT-3 API with Python and Node.js.

Legacy Application Refactoring & CMS Integration

– ITH Pós Graduação

I led a complete refactoring of the legacy application, a project that directly improved Google Speed Insight scores and significantly reduced advertising expenses.
I developed and launched a new front-end application using Nuxt2, which integrated with the company's WordPress CMS to modernize the user experience and content delivery.

Education

Universidade Federal de Viçosa

In progress

Postgraduate Lato Sensu - Specialization, Artificial and Computational Intelligence

UniAraguaia Centro Universitário

Graduated in dez, 2022

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