Guilherme Lage da Costa
Software Engineer
| GitHub | guilhermeldcosta@gmail.com |
Skills
Java | Spring Boot | Spring Batch | Spring Security | Python | Angular | TypeScript | HTML | CSS | REST | RESTful | OpenAPI | Swagger | Microservices | Backend | Full-stack | JPA | Hibernate | AWS | Lambda | SQS | SNS | Glue | S3 | DocumentDB | MongoDB | PostgreSQL | MySQL | CloudWatch | IAM | SQL | NoSQL | Docker | Terraform | Linux | Bash | CI/CD | Git | Maven | SonarQube | JUnit | Mockito | Datadog | English, Portuguese - Both at a professional level or above.
Experience
NTT DATA Europe & Latam | Remote
Senior Software Engineer | 08/2025 - current
- Developed and orchestrated microservices processing approximately 1 million financial transactions daily using Spring Boot, AWS SQS, SNS, Amazon DocumentDB and Datadog
- Implemented ETL pipelines to process approximately 1 million operations per day using AWS Glue, Spark, Python, S3, Glue Catalog, Lambda, and SQS
- Optimized a contract draft recommendation system using AWS Lambda and Python, achieving response times under 2 seconds through function warm-up and multi-level caching strategies
Dti Digital | Remote
Full-stack developer | 01/2025 - 07/2025
- Engineered automated document processing system with Spring Batch and Java 17, slashing monthly workload by 95% and saving more than 20 staff hours per month
- Migrated legacy systems from Java 6 to new architectures in Java 17, upgrading systems that handled 200 transactions per day to over 2,000 per minute
Full-stack developer intern | 11/2023 - 12/2024
- Collaborated on implementing a secure microservices infrastructure in AWS, contributing to API Gateway integration and centralized logging configuration
4MTI | Belo Horizonte, MG
Backend intern | 08/2023 - 09/2023
- Developed automated web crawlers processing over 10,000 records daily, including a specialized solution that generated R$ 20,000 in revenue for a key client, using PHP, PostgreSQL, and Puppeteer
Pontifical Catholic University of Minas Gerais | Belo Horizonte, MG
Algorithms and data structures tutor | 02/2023 - 06/2023
- Tutored students in data structures and algorithms with Java, C, and C++
Education
Pontifical Catholic University of Minas Gerais | Belo Horizonte, MG
- Bachelor’s degree in Software Engineering | 08/2022 - 08/2026
- Postgraduate in Project Management | 11/2020 - 11/2021
- Bachelor’s degree in Civil Engineering | 02/2015 - 06/2020
Licenses & Certificates
- System Administration I (RH 124) | Red Hat, 10/2023
- Google Cloud Skills Boost | Google, 03/2023