Esteban Rios
Harrison,NJ
Summary
Cloud-Focused Software Engineer & DevOps Specialist with deep expertise in AWS microservices, API development, CI/CD automation, and scalable infrastructure. Skilled at designing and deploying high-performance cloud systems that handle 1M+ API requests weekly, with a strong focus on reliability and efficiency. Experienced in building CI/CD pipelines that reduce deployment cycles by 30% and implementing monitoring frameworks like New Relic and Splunk to maintain 99.95% system uptime. Adept in backend development, authentication systems, and event-driven architectures, with a passion for mentoring engineers, optimizing cloud architecture, and driving scalable innovation in production environments.
Overview
12
12
years of professional experience
1
1
Certification
Work History
Software Engineer II
Cox Automotive
06.2021 - 12.2024
- Designed and maintained AWS microservices (Lambda, ECS, DynamoDB) processing 1M+ API requests weekly.
- Led event-driven architecture design, improving real-time processing with AWS SNS/SQS.
- Developed CI/CD pipelines with GitHub Actions & Jenkins, cutting deployment time by 30%.
- Mentored junior engineers, improving CI/CD adoption and streamlining development workflows.
- Designed a service for scanning uploaded files for any viruses with an upgraded version of AWS bucketAV using Terraform, Cloudformation, feature toggles.
- Helped maintained and designed new functionality for a Document processing service which was used by our consumers, increasing document processing efficiency by 40%
- Helped maintain and designed an eventing service for notifying changes in status of a car deal to subscribed consumers.
Lead Application Developer
Sky IT Group
05.2014 - 06.2021
- Developed data-processing pipelines with Python (pandas) improving ingestion speed by 50%.
- Built full-stack applications (ReactJS, Flask, Express.js) for clients, increasing engagement by 25%.
- Automated testing workflows with Selenium, reducing QA time by 60%.
- Managed Auth0 authentication & security protocols.
Testing Engineer
Gaming Laboratories International
10.2012 - 05.2014
- Led a team conducting performance testing on casino gaming software.
- Reverse-engineered client systems for bug detection and reliability improvements.
- Automated testing on Linux-based platforms, reducing debugging turnaround time.
- Performed hardware and software testing on physical machines. Software testing required networking gaming slot machines to be configured and set up to a pc for debugging.
- Wrote bash scripts for software testing, to test all possible award payouts and validated they were acceptable according to regulations.
Education
Bachelor of Science - Computer Engineering
New Jersey Institute of Technology
05-2012
Skills
- Python
- Object-oriented programming
- Javascript
- Software development lifecycle
- Agile methodologies
- Web technologies
- Software development
- Agile
- Project management
- Team collaboration
Websites
Certification
AWS Certified Cloud Practitioner - Foundational
LANGUAGES
Spanish
GITHUB
https://github.com/riosem
Timeline
Software Engineer II
Cox Automotive
06.2021 - 12.2024
Lead Application Developer
Sky IT Group
05.2014 - 06.2021
Testing Engineer
Gaming Laboratories International
10.2012 - 05.2014
Bachelor of Science - Computer Engineering
New Jersey Institute of Technology
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