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Hi, I'm John Terry—a Senior Software Engineer with 10+ years building large-scale distributed systems across AI/ML, e-commerce, fintech, healthcare, and multi-cloud platforms. I design microservices, event-driven architectures, and high-throughput data systems that power millions of users and transactions. I also enjoy mentoring teammates and improving developer experience across production projects.…Hi, I'm John Terry—a Senior Software Engineer with 10+ years building large-scale distributed systems across AI/ML, e-commerce, fintech, healthcare, and multi-cloud platforms. I design microservices, event-driven architectures, and high-throughput data systems that power millions of users and transactions. I also enjoy mentoring teammates and improving developer experience across production projects.

John Terry

Full Stack Developer, Back-End Developer, AI Engineer, +3

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Hi, I'm John Terry—a Senior Software Engineer with 10+ years building large-scale distributed systems across AI/ML, e-commerce, fintech, healthcare, and multi-cloud platforms. I design microservices, event-driven architectures, and high-throughput data systems that power millions of users and transactions. I also enjoy mentoring teammates and improving developer experience across production projects.…Hi, I'm John Terry—a Senior Software Engineer with 10+ years building large-scale distributed systems across AI/ML, e-commerce, fintech, healthcare, and multi-cloud platforms. I design microservices, event-driven architectures, and high-throughput data systems that power millions of users and transactions. I also enjoy mentoring teammates and improving developer experience across production projects.

Available to hire

Hi, I’m John Terry—a Senior Software Engineer with 10+ years building large-scale distributed systems across AI/ML, e-commerce, fintech, healthcare, and multi-cloud platforms.

I design microservices, event-driven architectures, and high-throughput data systems that power millions of users and transactions. I also enjoy mentoring teammates and improving developer experience across production projects.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Software Engineer at Meta

October 1, 2019 - Present

Core contributor to Facebook, Instagram, Ads Manager, and Feed Ranking systems. Built and scaled AI-driven personalization and full-stack platform development for large-scale social media products. Owned end-to-end delivery of AI-powered ranking for Facebook Feed and Instagram, spanning microservices, data pipelines, and frontend integration. Led backend architecture for Ads Manager and internal AI platforms, and designed scalable frontend applications with React, Next.js, and Angular. Integrated OpenAI APIs and LangChain-based workflows into internal tooling to streamline development and automation. Mentored junior engineers and guided code reviews to elevate team productivity and quality.

Software Engineer II at Amazon

October 1, 2015 - February 1, 2019

Core contributor to Amazon eCommerce platform and AWS-based backend services, focusing on large-scale retail systems, order processing, and cloud-native distributed architecture. Built and scaled backend services for product catalog, cart, checkout, and order management, supporting high-volume global retail transactions. Designed and implemented microservice architecture on AWS, improving system modularity, fault isolation, and scalability for critical eCommerce workflows. Built event-driven pipelines using AWS Lambda, SQS, SNS, and Kinesis to enable asynchronous processing of order lifecycles, inventory updates, and fulfillment tracking.

Software Engineer Intern at Google

August 1, 2012 - October 1, 2012

Contributed to backend systems for Google Wallet (Google Pay), focusing on secure transaction processing, authentication flows, and scalable cloud-based payment services on Google Cloud Platform. Built secure payment processing paths and streamlined transaction workflows supporting global digital payments.

Software Engineer at Microsoft

January 1, 2013 - September 1, 2015

Developed backend services for Microsoft Azure health care and enterprise platforms, enabling secure and scalable processing of sensitive clinical and business data; built cloud-native services on Azure using C# and .NET; designed and implemented HL7/FHIR-based health care data integration; led data processing pipelines handling 1M+ health care records per day; improved throughput, reliability, and data consistency in production environments.