Marcelo Costalonga
Rio De Janeiro - RJ
Summary
I am a software engineer, currently finishing my M.Sc. in Computer Science. I am enthusiastic about learning new technologies and applying them to solve real-world problems. Also, I am particularly intrigued by software problems involving parallelism and concurrency challenges.
Overview
6
6
years of professional experience
Work History
Backend Develop
Claravine
10.2023 - Current
- Developed applications for the SaaS platform with the purpose of managing marketing data for big companies.
- Optimized code performance and scalability by migrating legacy PHP code to Kotlin.
- Developed HTTP endpoints for back-end APIs (PHP|Laravel and Kotlin|Spring) using the MVC pattern.
- Wrote efficient SQL queries and managed data transport.
- Worked closely with the QA and CSM teams to fix bugs and improve code coverage by writing automated integration tests.
Fullstack Developer
Tecgraf
02.2021 - 09.2023
- Developed web applications using Angular (front-end) and Java with Spring (back-end) to provide solutions for an Oil & Gas company, facilitating the management of multiple executions of different ML algorithms.
- Created robust CI/CD pipelines to ensure software quality and automate the deployment processes.
- Enhanced communication between the front-end, server, and database access by developing new endpoints for the REST API using Java with Spring and Hibernate ORM.
- Implemented automated unit tests with JUnit, Karma, and Jasmine, and end-to-end tests using Cypress, resulting in improved software quality.
- Evaluated and integrated database migration tools into the architecture, enhancing version control and facilitating management of database schema changes.
- Incorporated monitoring tools into the microservices architecture to track containers status.
- Collaborated closely with others developers and the UI/UX team to define goals and solutions for clients, following agile methodologies such as Kanban and Scrum.
Software Developer Intern
Tecgraf
09.2020 - 02.2021
- Provided consulting solutions for a Green Tech startup and developed a pipeline using AWS services to store, process, filter and analyze data about the air pollution emitted by public transportation in the city of Rio de Janeiro.
- Collaborated closely with startup owners and a team of data science specialists, actively participating in meetings to align strategies and project goals.
- Tech set: SQL, Bash, Python, AWS-CLI, AWS services.
- AWS services used: IoT Core, IoT Rule, Kinesis Firehose/Analytics (SQL), QuickSight, Lambda, CloudWatch, S3 and DynamoDB.
Software Researcher Intern
IBM
10.2018 - 09.2020
- Contributed to the development of cloud applications to capture data provenance for large-scale workflows within a Big Data context.
- Developed data validation services, based on the defined data ontology standard, to ensure user's data integrity.
- Enhanced architecture communication speed, resulting in reduced overhead for transmitting extracted data between microservices.
- Evaluated the performance of Graph Databases and determined the best integration for the architecture.
- Automated Kubernetes architecture deployment through the creation of a Helm chart, and monitored its pods' lifecycles.
- Wrote SPARQL queries to assess system performance, producing data used in scientific papers presented at international conferences.
- Implemented new endpoints in the REST API, improving service communication and system functionality.
Education
Master of Science - Computer Science
Pontifical Catholic University of Rio De Janeiro
RJ, Brazil05.2024
Bachelor of Science - Computer Engineering
Pontifical Catholic University of Rio De Janeiro
RJ, Brazil06.2021
Skills
- Kotlin Spring
- PHP Laravel
- Python Flask
- Java Spring
- Typescript Angular
- SQL, NoSQL, SPARQL
- Microservices (Kubernetes, Docker, Helm)
- CI/CD (Circle CI, Travis CI, GitLab Runner)
- Automated tests (Cypress, Quarkus, Jasmine, Karma)
Other Skills
- Lua
- C, C++
- Bash scripting
- AWS, Google Cloud
- Supervised ML
- Monitoring Tools
- Database Migration Tools
- ORM
- Data Ontology
- Flutter
- Python: Scikit Learn (Machine Learning)
Languages
Portuguese
Bilingual or Proficient (C2)
English
Bilingual or Proficient (C2)
Spanish
Intermediate (B1)
Timeline
Backend Develop
Claravine
10.2023 - Current
Fullstack Developer
Tecgraf
02.2021 - 09.2023
Software Developer Intern
Tecgraf
09.2020 - 02.2021
Software Researcher Intern
IBM
10.2018 - 09.2020
Master of Science - Computer Science
Pontifical Catholic University of Rio De Janeiro
Bachelor of Science - Computer Engineering
Pontifical Catholic University of Rio De Janeiro
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