Gabriel Serejo

Generative AI Engineer

Email:gabrieltfserejo@gmail.com

Phone:+55 (62) 9 9406-3442

Website:serejo.dev

Senior Software Engineer with 8+ years of experience, specializing in shipping production-grade Generative AI and RAG applications. I combine robust engineering (Vue/Nuxt, Node.js) with cutting-edge AI (LLMs, Vector DBs, LangChain) to built scalable, intelligent systems. Proven track record of leading architectural migrations and delivering high-value AI solutions for international markets.

Technical Proficiencies

• Generative AI

• RAG

• LLMs

• LangChain

• 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 - the moment

Implanta IT Solutions

I engineered 'Atlas', a production-grade RAG chatbot that unified company documentation, significantly accelerating internal onboarding and knowledge retrieval.
I developed a high-precision semantic cross-reference system using Embedding models, enabling automated product normalization through NLP.
I architected 'Cockpit 2.0', implementing a dynamic UI-from-API rendering engine that decoupled frontend deployments from feature launches.

Software Engineer

May, 2023 - May, 2024

TLScontact

I was the lead developer for the official customer support chatbot, overseeing the integration of conversational flows and ensuring a seamless user experience.
I championed the migration of the help module to a 'Feature Services' architecture, providing the scalability required for future AI tool integration.
I delivered critical features and mitigated vulnerabilities for institutional visa tools using Vue 3 and Node.js.

Software Engineer

Dec, 2022 - Jul, 2023

Cliqx

I scaled the front-end architecture for a major retail application (Pernambucanas) using a service-oriented hexagonal pattern in Nuxt 3.
I designed a high-performance caching layer using Redis and SWR, establishing the performance foundation necessary for data-intensive applications.
I successfully migrated legacy workflows to modern reactive patterns, improving team velocity and system throughput.

Software Engineer

Apr, 2022 - Dec, 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

Aug, 2021 - Oct, 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.

Software Engineer

Jun, 2019 - Sep, 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 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 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 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 Dec, 2022

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