John Aquino

John Aquino

Experienced Full Stack Engineer

Innovative software engineer with a passion for developing cutting-edge applications. Fascinated by the intersection of technology and user experience, I bring forth a blend of engineering, design, and entrepreneurship to every project.

Projects

Inqo

Inqo

A daily 20 questions game for iOS/Android.

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Stegg

Stegg

Hide any message in any image (steganography).

View Project

Career Timeline

Application Engineer III at Vanguard

Mar 2025 - Present

  • Helped ship call center bots to improve customer service efficiency.
  • Created robust production support dashboards for better system observability.
  • Working to deliver a multi-agent AI application to cut processing time by 1-3 weeks.

Application Engineer II at Vanguard

Mar 2023 - Mar 2025

  • Designed and developed robust web applications using Angular for the front-end and Python Lambdas & Spring Boot (Java) for the backend, ensuring seamless integration and high performance.
  • Migrated legacy mainframe data for users holding over $1 trillion in assets to AWS cloud infrastructure, enhancing scalability and accessibility.
  • Contributed to the modernization of the call center infrastructure, reducing agent call volume and lowering operational costs.
  • Implemented microservices-based solutions, improving system modularity and maintainability.
  • Implemented monitoring and logging solutions using AWS CloudWatch and Splunk to track application performance and ensure high availability.
  • Acted as Site Reliability Champion, leading efforts to improve system availability, performance monitoring, and incident response processes.
  • Mentored and guided junior engineers, fostering their professional growth and improving team productivity.
  • Developed and successfully demoed an AWS Bedrock Generative UI POC to leadership, showcasing innovative AI-driven solutions.

Application Engineer I at Vanguard

Jun 2020 - Mar 2023

  • Contributed to the development of a high-value transactions web application, enabling users to process large transactions with enhanced security and reliability.
  • Led the development of a mobile-responsive version of the app using Angular, empowering users to complete transactions on the go.
  • Implemented RESTful APIs to facilitate seamless communication between front-end and back-end systems.

Technical Skills

Programming Languages

  • Java
  • Python
  • TypeScript/JavaScript
  • Dart

Frameworks & Libraries

  • Spring Boot
  • Angular
  • Next.js
  • React
  • Flutter

Cloud & DevOps

  • AWS (Lambda, API Gateway, DynamoDB, S3, Cognito, Bedrock, EC2, Step Functions, SQS, SNS, CloudWatch, CloudFormation)
  • CI/CD & API Development

Monitoring & Logging

  • Splunk
  • AWS CloudWatch

Certifications

AWS Certified Developer - Associate

Date: Dec 2022

Expertise in deploying, debugging, and developing on AWS.

AWS Certified Cloud Practitioner

Date: Aug 2022

Foundational cloud concepts, AWS services, security, and pricing.

AWS Certified AI Practitioner

Date: Jan 2025

Foundational knowledge in machine learning and AI on AWS.

Education

University of Georgia

B.S. in Computer Science (2016-2020)

Relevant Coursework: Cyber Security, Linear Algebra, Evolutionary Computation