John Day

Technical Architect, Full Stack Developer and Engineer

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About Me

John Day is a Technical Architect, Full Stack Developer and Engineer with over 20 years of professional experience in the IT industry. He has experience with Development, DevOps and Platform Engineering for various business sectors. John is a trusted team leader with strong communication skills.

Contact Information

Skills & Expertise

10+ Years

Agile, Angular, Ant, Atlassian Suite, Azure, Bitbucket, Communication, Confluence, Documentation, ETL, Eclipse, FTP, Git, Gradle, Groovy, Hibernate, Hybris, JMS, Java, JavaScript, Jenkins, Jira, Linux, Maven, MySQL, NodeJS, ORM, Oracle, PL/SQL, PostgreSQL, REST, RxJS, SAFE, SAP Commerce Cloud, SAP ECC, SAP PIPO, SQL, SQL Server (MSSQL), Scrum, Shell, Solr, Splunk, Spring, Team Leader, Technical Design, Tomcat, VS Code, WordPress

6+ Years

AWS, Cloudinary, Dynatrace, Elastic Search, GraphQL, JUnit, Kibana, Logstash, Mule, Python, Selenium, TestNG, TypeScript

2+ Years

BloomReach, Contentful, Coveo, Figma, MongoDB, Playwright

Professional Experience

eCommerce Solutions, LLC

  • Technical Architect, Full Stack Developer and Platform Engineer
    June 2020Feb 2025
  • Architecture and implementation of system integration via Spark, Kafka, MuleSoft, Boomi, SAP PIPO, REST, JMS.
  • Front-end implementation with Angular and React, based on Figma treatments.
  • Back-end implementation of API’s and logic with Java and Python.
  • Scripting implementation with Bash, Groovy, Python, Gradle, Ant.
  • Intrastructure implementation and administration with Terraform on Azure and AWS Cloud.
  • Content Management System (CMS) integration and administration via JMS and batch for Cloudinary, BloomReach, and Contentful.
  • Content delivery (CDN) implementation and administration via Akamai.
  • Search implementationa and administration with Solr and Coveo.
  • Database integration and administration with PostgreSQL, MSSQL, MongoDB on Cloud.
  • Create technical specifications based on business requirements.
  • Oversaw DevOps processes, CI/CD pipelines using Jenkins, and cloud deployments on Azure.
  • Collaborated with cross-functional teams in a Scrum-based agile environment to meet project milestones.
  • Reviewed Git pull requests to ensure code quality, adherence to best practices, and to identify potential issues.
  • Troubleshot and resolved complex technical issues across the development stack, ensuring minimal downtime and efficient problem-solving.
  • Break down and organized business requirements into technical specifications on Jira and Confluence.
  • Identify risks and offer different approaches.
  • Define best practices and standards for development teams.
  • Mentor junior developers and architects to foster professional growth and innovation.
  • Develop and maintain comprehensive documentation for architectural frameworks and processes.
  • Implement automated testing and deployment pipelines to enhance software quality.
  • Analyze system performance metrics to identify and resolve bottlenecks efficiently.

Capgemini (acquired Lyons)

  • Technical Architect and Full-Stack Developer
    July 2017May 2020

Accenture (acquired Razorfish)

  • Technical Architect and Full-Stack Developer
    June 2014June 2017

Daugherty Business Solutions

  • Technical Architect and Full-Stack Developer
    April 2013June 2014

IBM Global Services

  • Technical Architect and Full-Stack Developer
    August 1996December 2012

Personal Project Sites

Saas Site for CRM

Authentication, Postgres database, Prism, NodeJS, TypeScript, React, NextJS, ShadCN, Stripe, Zod, Zustand, API rate-limits, Secure API.


AI Deep Research

Authentication, Postgres database, Drizzle, NodeJS, TypeScript, Python, React, NextJS, ShadCN, WebSockets, OpenAI, Agents, Stripe, Zod, Zustand, API rate-limits, Secure API.



Real-Time Social Media Site

Authentication, Postgres database, Prisma, NodeJS, TypeScript, React, NextJS 15, TanStack Query, ShadCN, Media Upload, Tailwind, Zod, GetStream (Real-Time Streaming)