Jefferson Fidelis

Resume

Experience & education

Download Resume

Experience

    May 2026Present

    Operations Analyst Jr. · Nefex

    Technology operations and internal tooling at Nefex, building automations and integrations that streamline processes and improve operational efficiency.

    • Work directly in technology operations and process support for the organization.
    • Develop and maintain automations and integrations that streamline operational workflows and improve service efficiency.
    • Implement internal tools and solutions with a focus on stability, security, and scalability.
    • Collaborate with cross-functional teams to identify improvements and propose technology-based solutions.
    AutomationIntegrationsInternal Tooling

    Feb 2025Dec 2025

    Software Engineer (Freelance) · Sensilog

    Full-stack and AI engineering for client projects, from interactive front ends to production APIs and LLM-powered features.

    • Designed and shipped full-stack features end to end, from interactive UIs to robust, scalable APIs.
    • Fine-tuned LLMs and built retrieval-augmented generation (RAG) pipelines to power custom, domain-specific AI applications.
    • Integrated NLP pipelines into production systems, connecting model output directly to client-facing features.
    • Worked across React, Node.js, Flask, Python, and Java depending on the project's constraints.
    ReactNode.jsFlaskPythonJavaLLMsRAG

    Apr 2024Jan 2026

    Business Intelligence Analyst (Intern) · Dataprev

    BI systems development at Brazil's federal social-security data-processing company, focused on data analysis and dashboarding.

    • Built and maintained Business Intelligence dashboards using WebFocus and Hyperstage for large-scale institutional data.
    • Developed data-visualization panels in JavaScript and Java that made complex datasets actionable for non-technical stakeholders.
    • Worked directly with production data pipelines feeding public-sector decision-making.
    WebFocusHyperstageJavaScriptJavaSQL

    Aug 2024Jan 2025

    Front-End Engineer (Scholarship Program) · Compass UOL

    Selective front-end training program (partnership with UNIPÊ) combining intensive Scrum practice with production-grade React/AWS work.

    • Selected for a competitive technology scholarship program in partnership with UNIPÊ, focused on modern front-end engineering.
    • Built applications with React, Redux, and AWS under Scrum, with weekly sprint reviews and code documented via Storybook.
    • Applied AWS Well-Architected Framework principles and web-security practices across simulated production scenarios.
    • Balanced 20 hours/week of structured study and hands-on delivery under mentorship from senior engineers.
    ReactReduxAWSTypeScriptStorybookScrum

    Jul 2023Dec 2023

    Full-Stack Developer · Fábrica de Software (UNIPÊ)

    Full-stack delivery on a public-sector partnership with the João Pessoa Military Police, building an AI tool for sentiment analysis.

    • Built a sentiment-analysis AI tool for public comment data in direct partnership with the João Pessoa Military Police (PMJP).
    • Delivered the full stack with Python, Django, JavaScript, HTML, and CSS, containerized with Docker.
    • Managed delivery and sprint planning for the project using Trello in a small cross-functional team.
    PythonDjangoJavaScriptDockerHTMLCSS

    Jan 2022Jul 2023

    IT Support Apprentice · São Braz

    First professional role: hands-on IT support and infrastructure maintenance for a large food-industry company.

    • Provided hardware and software support for end users across the organization.
    • Configured equipment and performed preventive maintenance on systems and devices.
    • Built the foundational troubleshooting and systems literacy that led into a full software-engineering path.
    Hardware SupportWindowsNetworking

Education

    2026Present

    Centro Universitário de João Pessoa (UNIPÊ)

    Postgraduate Specialization, Software Engineering with Generative AI · In progress — Hybrid

    20232026

    Centro Universitário de João Pessoa (UNIPÊ)

    B.Sc. in Computer Science

    20222023

    Faculdade Internacional da Paraíba (FPB)

    B.Sc. in Computer Science · Transferred to UNIPÊ

    20192021

    Colégio Intensivo

    High School Diploma

Skills

Frontend

ReactNext.jsTypeScriptTailwind CSSFramer Motionshadcn/uiAngularHTML & CSS

Backend

Node.jsNestJSFastAPIPythonJavaDjangoSpring Boot

Data & Storage

PostgreSQLMySQLMongoDBRedisPrismaSQL

AI & Machine Learning

OpenAI APIGeminiCrewAILangChainRAGLLMsMCPMachine LearningComputer Vision

DevOps & Cloud

DockerAWSSupabaseGitHub Actions