Célio Vieira
FullStack Engineer • Data Engineer • AI Engineer | Cloud | Web | Mobile
About me
I am a FullStack, Data, and AI Engineer, with over 7 years of professional experience. Currently a Tech Lead at Banco Itaú, where I design and optimize real-time and batch data pipelines using AWS (Glue, EMR, Athena, Redshift, Kinesis, Airflow, Iceberg) and Apache Spark/PySpark, while leading and mentoring my team from requirement gathering to delivery.
I am deeply passionate about AI engineering — developing solutions with LLMs, fine-tuning models using Ollama, ComfyUI, and HuggingFace on local servers, and implementing RAG pipelines. I hold certifications in Prompt Engineering, AI Practitioner, and Responsible AI.
With a postgraduate degree in Cloud Computing, I bridge the gap between software and data engineering to build high-performance architectures. I apply TDD, SOLID, DDD, and event-driven design across Node.js, Python, Go, and TypeScript stacks.
Outside of work, I enjoy playing video games, guitar, working out, walking and playing with my family and pets, and watching movies, series, anime, and superhero comics.
Experience
- Jul 2022 – Present — RemoteSoftware/Data Engineer & Tech LeadCurrentItaú Unibanco
- Tech Lead: Leading and mentoring peers from requirement gathering to delivery
- Design and optimize real-time and batch data pipelines using AWS Glue, EMR, Athena, Redshift, Kinesis, Airflow, Iceberg, and Apache Spark
- Integrations with Kinesis/Kafka; Data Lake and Lakehouse architectures
- Ensure data quality through testing, schema validation, and observability
- Deliver analysis-ready datasets for Athena/Redshift and QuickSight dashboards
- Performance and cost optimization across storage/compute workloads
- Languages: Python, JavaScript/TypeScript, Go, Terraform
- Develop and maintain banking software services (Payments and Receipts)
- Work with cross-functional teams on requirements, design, implementation, and delivery
- TDD/BDD, SOLID, YAGNI, DRY; system design and best practices
- AWS Stack: Lambda, API Gateway, SQS, EventBridge, DynamoDB
- Languages: Node.js, Python; Infrastructure and cloud with AWS
- Apr 2022 – Jul 2022 (4 months) — Belo Horizonte, MG, BrazilSenior Software DeveloperSquadra Digital
- Led development and implementation of chatbot solutions
- Collaborated on frontend, backend, and DevOps; planning and project management
- Technologies: Node.js, Next.js, AWS (Amplify, API Gateway, DynamoDB, S3)
- Jan 2020 – Apr 2022 (2 yr 4 months) — Belo Horizonte, MG, BrazilSoftware DeveloperEditora Fórum
- Maintained management system and bookstore user flow
- Event-driven hexagonal architecture in Node.js with AWS Serverless
- Elastic Stack (Elasticsearch/Kibana) for indexing, searching, and dashboards
- Event-driven hexagonal architecture in Node.js on AWS Serverless
- Frontend with React/Next.js (Ant Design, MSW, React Hook Form/Formik, Tailwind, AG-Grid)
- TDD, SOLID, Strategy; Jira/Trello/GitHub for project management
- Full-stack development of web systems within the organization
- May 2019 – Jan 2020 (9 months) — Belo Horizonte, MG, BrazilSoftware DeveloperCIT SENAI
- IoT/Industry 4.0/Automation projects using Arduino, PLC
- Web systems developed with JavaScript, MongoDB, MySQL
- Nov 2018 – Apr 2019 (6 months) — Belo Horizonte, MG, BrazilComputer InstructorFeed Idiomas
- Assisted students: AutoCAD, Dreamweaver, Corel Draw, Office Package Advanced
- Technical support and assistance
- Software/Backend DeveloperSide Projects
- End-to-end development across web/mobile/serverless
- APIs and event-driven services with Node.js/Go/Python on AWS
- Serverless infra with AWS CDK; reusable modules (cdk-factory)
- React/Next.js and React Native/Expo with CI/CD
Education
- Aug 2021 – Feb 2022Postgraduate — Cloud Computing Process and ArchitecturePitagoras College
- Aug 2019 – Jul 2021Bachelor — Computer SciencePitagoras College
- Aug 2013 – Jun 2019Bachelor — Computer EngineeringCentro Universitário Una
- Jun 2018 – Dec 2018Electrical Installation Process OperationsSENAI BH CECOTEG
Certifications
- 2025Essentials of Prompt EngineeringAmazon Web Services (AWS)Prompt EngineeringLLMAIAWS
- 2025Artificial Intelligence PractitionerAmazon Web Services (AWS)AIMachine LearningAWSCloud AI
- 2025Responsible Artificial Intelligence PracticesAmazon Web Services (AWS)AI EthicsResponsible AIAWS
- Jul 2025AWS Knowledge: ServerlessAmazon Web Services (AWS)
ID: c38a0fcd-b515-44e5-b4e6-009d66dda4c4
API GatewayAWSCloud ComputingCloud ApplicationsAWS LambdaServerless ComputingAmazon DynamoDBAmazon SQSAmazon SNSAWS IAMAWS SAMAWS Step Functions - Nov 2023Go: The Complete Developer's GuideUdemy
ID: UC-bc0659f2-d151-40eb-8500-1bf08edf9d97
Go - Nov 2023SQL for Developersdesenvolvedor.io
ID: 064ce485-8785-478b-b182-762072f473ec
SQL - Oct 2023Mastering Apache Kafkadesenvolvedor.io
ID: 7356c88e-24b9-40b2-aa07-13333947fc07
Apache Kafka - Aug 2022AWS Solutions Architect - AssociateUdemy
ID: UC-735116c9-2bd9-458a-bdec-827c7f7a0c16
AWS - Jul 2018Energy Generation from the Kinetic Energy of Water (Project)Centro Universitário Una
Skills
AI & Machine Learning
Data Engineering
Cloud & Infrastructure
Backend & Languages
Frontend & Mobile
Platforms & Services
Projects
- Be Your Stories (BYS)A platform where readers can read books created by other people.
Publish your books to the world and share them with your friends, read new books and get recommendations from other readers, help writers to grow and be a part of the community, and more.
JavaScriptNode.jsGoReact.jsFull‑stack DevelopmentPythonAWSDockerNext.jsAWS LambdaTypeScriptNoSQLTDDSOLIDDDDMeilisearchSupabaseReact NativeExpoAWS GlueAPI GatewaysStripe - NodeJS APP BuilderCreate NodeJS applications with a Serverless handler, handle routes easily.
Library to help you to handle NodeJS Serverless applications, handle routes, security, tests, and more.
JavaScriptNode.jsTypeScript - cdk-factoryAWS CDK factory to build serverless infrastructure.
Library to help you to build serverless infrastructure with AWS CDK, reusable modules, and more.
JavaScriptAWSTypeScript
Be Your Stories — Screenshots
NodeJS App Builder — Screenshots
CDK Factory — Screenshots
Resume
View or download my full resume as a PDF.