I am an AWS Certified Solutions Architect and full-stack software engineer with over 5 years of experience working with a variety of programming languages including Java, JavaScript, and Scala Spark. I specialize in migrating legacy systems to the cloud and designing solutions for complex business challenges. My work has allowed me to develop efficient, scalable applications while improving operational costs and system reliability. I enjoy collaborating with cross-functional teams and driving impactful improvements through technology. Whether it's optimizing data processing workflows or refactoring codebases for maintainability, I strive to deliver high-quality software solutions that contribute to business success.

Zain Jaffary

I am an AWS Certified Solutions Architect and full-stack software engineer with over 5 years of experience working with a variety of programming languages including Java, JavaScript, and Scala Spark. I specialize in migrating legacy systems to the cloud and designing solutions for complex business challenges. My work has allowed me to develop efficient, scalable applications while improving operational costs and system reliability. I enjoy collaborating with cross-functional teams and driving impactful improvements through technology. Whether it's optimizing data processing workflows or refactoring codebases for maintainability, I strive to deliver high-quality software solutions that contribute to business success.

Available to hire

I am an AWS Certified Solutions Architect and full-stack software engineer with over 5 years of experience working with a variety of programming languages including Java, JavaScript, and Scala Spark. I specialize in migrating legacy systems to the cloud and designing solutions for complex business challenges. My work has allowed me to develop efficient, scalable applications while improving operational costs and system reliability.

I enjoy collaborating with cross-functional teams and driving impactful improvements through technology. Whether it’s optimizing data processing workflows or refactoring codebases for maintainability, I strive to deliver high-quality software solutions that contribute to business success.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Javanese
Advanced
Amharic
Intermediate

Work Experience

Software Engineer at Carfax
July 1, 2023 - Present
Developed high-performance Java applications using Test-Driven Development principles, designed and implemented a vehicle status and location algorithm processing over 100 million records daily, reducing data processing time by 15%. Led migration of on-premises infrastructure to AWS cloud optimizing cost and scalability through initiatives that reduced storage costs by 40% via S3 lifecycle policies and cut data processing costs by 30% using EMR with EC2 Spot Fleets. Deployed serverless web services with AWS Fargate and DynamoDB to reduce operational overhead and optimize API response times. Collaborated across teams to improve vehicle price accuracy by 15%, enhancing customer trust and revenue. Served as on-call engineer resolving high-severity incidents, reducing downtime by 25%, and implemented monitoring tools to prevent issues. Refactored legacy codebase components to reduce complexity by 30%, improve test coverage by 40%, and accelerate developer onboarding through documentation.
Software Engineer Coop at Garner Distributed Work Inc
August 31, 2022 - July 17, 2025
Automated backup and disaster recovery for a Neo4j database by migrating from on-prem to Google Cloud Platform using GKE and Terraform, reducing recovery time objective by 60%. Developed a custom Java job analyzing shipping records handling non-standard formats with Scala and ZIO, increasing throughput by up to 40% and reducing unhandled exceptions by 25%. Incorporated microservices and APIs with a hexagonal architecture enabling system interoperability and decoupling. Led frontend migration from Angular 12 to 13, integrated backend changes, and improved TypeScript use. Streamlined deployment processes with Bash scripts and CI/CD pipelines enabling automated builds, configuration, artifact uploads, and end-to-end testing. Designed a smoke test framework using Jenkins, Cypress, Kubernetes, Prometheus, and Docker to validate website uptime and functionality upon code changes.

Education

Bachelor of Computer Science at University of Toronto
September 1, 2018 - June 30, 2023

Qualifications

AWS Certified Solutions Architect SAA C03
December 1, 2024 - December 31, 2024

Industry Experience

Software & Internet, Financial Services, Transportation & Logistics

Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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