Summary
Overview
Work History
Education
Skills
Languages
Timeline
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Yazan "Zack" Safadi

Toledo,OH

Summary

Full-Stack Software Engineer with 3+ years of experience delivering secure, high-performance applications in agile environments. Skilled in Node.js, Java, Python, JavaScript, and React with proven expertise in AWS cloud solutions and relational databases. Adept at building REST APIs, automating CI/CD pipelines, and implementing unit and integration testing. Collaborates effectively with cross-functional teams including architecture, cybersecurity, and infrastructure to design scalable, maintainable software solutions.

Overview

5
5
years of professional experience

Work History

Software Engineer (contract)

Capital One
03.2022 - 03.2025
  • Implemented full-stack features using Java, Python, AWS, and relational databases to improve scalability and performance.
  • Automated build, test, and deploy pipelines with Jenkins to support agile delivery and CI/CD best practices while limiting downtime to near zero for thousands of daily transactions.
  • Built unit and integration tests using Karate framework to ensure high-quality, secure microservices.
  • Migrated in-memory cache to AWS DynamoDB, optimizing data handling and system scalability.
  • Collaborated with security and architecture teams to enforce cyber-secure, compliant development practices.

Full Stack Java Developer

Cognixia
08.2021 - 03.2022
  • Developed secure REST APIs using Spring Boot, Spring Security, and Hibernate for scalable enterprise applications.
  • Designed and optimized relational and NoSQL databases to support high-availability web applications.
  • Created automated test suites with Mockito to maintain clean, reliable, and maintainable codebases.
  • Applied agile methodologies to deliver iterative enhancements aligned with business requirements.

R&D Technology Intern

Chiper
05.2020 - 08.2020
  • Rebuilt search algorithm, reducing “no results” queries from 15% to less than 1% while maintaining performance.
  • Performed big data analysis to drive e-commerce product development recommendations.
  • Delivered project findings to leadership in Spanish to guide strategic improvements.

Education

Bachelor of Science - Cognitive Science

University of Michigan
Ann Arbor, MI
05-2021

Skills

  • Programming & Scripting: Java, Nodejs, JavaScript, Python, SQL, C, Kotlin
  • Frameworks & Libraries: Spring Boot, React, Hibernate, JPA, Mockito
  • Cloud Services: AWS (EC2, RDS, VPC, DynamoDB, Security Groups)
  • DevOps & Automation: Jenkins, CI/CD, Unit Testing, Integration Testing, Pipeline Automation, Code Scanning
  • Databases: MySQL, PostgreSQL, MongoDB, DynamoDB
  • Methodologies: Agile/Scrum, Test-Driven Development (TDD)
  • Collaboration Tools: Git, GitHub, Jira, Confluence
  • Other Skills: Web Development, API Development, Secure Coding Practices, Automated Build/Test/Deploy

Languages

Spanish
Full Professional
Arabic
Limited Working
Catalan
Elementary

Timeline

Software Engineer (contract)

Capital One
03.2022 - 03.2025

Full Stack Java Developer

Cognixia
08.2021 - 03.2022

R&D Technology Intern

Chiper
05.2020 - 08.2020

Bachelor of Science - Cognitive Science

University of Michigan

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