CTO
2021 - PRESENTStripCard- Grew the product to 300 DAU over seven days and 100 DAU over one day. Deployed the mobile application, customer splash page, and back-end services.
- Prioritized features and deliverables and reviewed feedback from customers.
- Negotiated scope, vision, and direction with my cofounder.
Technologies: Python, Clojure, Google Cloud Datastore, Flutter, User Experience (UX), Full-stack, Web Development, APIs, Mobile Development, Software Design, REST APIs, Kotlin, Swift, GraphQL, Minimum Viable Product (MVP), PostgreSQL, Django, Team ManagementSenior Clojure/Clojurescript Engineer
2022 - 2023OnChain Studios, Inc- Developed a migration strategy and mentored fellow engineering team for the legacy clojure/clojurescript code base.
- Developed a chat based ML pipeline and infrastructure for greenfield project.
- Made many last minute business critical changes to the production code in preparation for business demand (catalog changes, purchasing flow, and notifiations).
Technologies: Clojure, ClojureScript, PostgreSQL, RabbitMQ, Amazon S3 (AWS S3)Solution Architect
2022 - 2022Animo Services LLC- Led a team of developers to build the credit card product. We gained over 400 credit card users in the first week of launch with an average rating of 4.5 out of 5.
- Managed the team processes and negotiated product scope and deliverables for each sprint.
- Led the design and architecture of both the front end and back end of the credit card product. The system handled the scale of the launch, and we delivered the product on time and exceeded stakeholder expectations.
Technologies: Mobile Development, Architecture, Flutter, Azure, Python, Google Cloud, Cloud, Team ManagementSenior Engineer
2020 - 2021Google- Implemented a forecasting simulation for a large network migration to inform decisions for the next quarter's network deployment.
- Worked on a team to design and implement forecasting methodologies for Google's global network. I completed multiple mission-critical experiments ahead of schedule and numerous last-minute changes to the design.
- Discovered a heavily hit performance hotspot of our user-facing dashboards. I proposed and implemented a solution and added regression criteria to our testing suite, decreasing from 15 seconds to 200 milliseconds the latency of our dashboards.
Technologies: C++, SQL, Machine Learning, Statistics, System Architecture, Full-stack, Web Development, Architecture, System Design, APIs, Software Design, REST APIs, Software ArchitectureSenior Engineer
2015 - 2020Apple- Pioneered a Spark application utilizing the employee directory to decrease indexing the authentication ACLs from 24 hours to 20 minutes using the new Spark pipeline.
- Developed a GDPR compliance application for next quarter's auditing report. I worked cross-functionally with the product team to complete the resource management system in a timely manner.
- Built a caching system for our resource ETL pipeline. It reduced outages from one per week to no outages since its implementation.
Technologies: Clojure, Java, Oracle, SQL, Full-stack, Web Development, Architecture, System Architecture, System Design, APIs, Resource Management, Software Design, REST APIs, Software Architecture, Amazon Web Services (AWS), PostgreSQL, Team Management
John McConnell
Software Developer in San Jose, CA, United States
Member since March 16, 2022
John is a professional developer whose duty is to understand his client's unique needs and make them a reality. The different hats he wore to help his team thrive include solo developer, team mentor, project manager, product manager, and CTO. He developed a network forecasting and allocation pipeline, sports party game, SAT education platform, resource management system for deployed assets, social networking application with content feeds, real-time chat, and dynamic content subscriptions.
John is now available for hire
Portfolio
- StripCardPython, Clojure, Google Cloud Datastore, Flutter, User Experience (UX)...
- OnChain Studios, IncClojure, ClojureScript, PostgreSQL, RabbitMQ, Amazon S3 (AWS S3)
- Animo Services LLCMobile Development, Architecture, Flutter, Azure, Python, Google Cloud, Cloud...
Experience
- SQL 9 years
- Go 8 years
- Java 8 years
- Clojure 7 years
- System Design 7 years
- Ruby on Rails 5 5 years
- User Experience (UX) 5 years
- Flutter 4 years
Availability
Full-time
Preferred Environment
Clojure, Flutter, Go, Java, Ruby on Rails 5, gRPC, JavaScript, React, Machine Learning, Google Cloud
The most amazing...
...product I've developed is a sports party mobile game. I designed and grew the application to 300 DAU over seven days and 100 DAU over one day.
Employment
Experience
- StripCard Apphttps://stripcardapp.com/
A sports party game built using Clojure, Flutter, and Python. I worked closely with my cofounder to align our vision, customer expectations, and priorities.
I act as the CTO and lead the product's implementation and design.
Skills
Languages
Clojure, Go, Java, SQL, JavaScript, Python, C++, Kotlin, Swift, GraphQLFrameworks
Flutter, Ruby on Rails 5, gRPC, Django, ClojureScriptLibraries/APIs
REST APIs, Stripe, React, WebRTCStorage
PostgreSQL, Google Cloud, Google Cloud Datastore, Amazon S3 (AWS S3)Other
Resource Management, Software Design, APIs, System Architecture, Full-stack, Web Development, Architecture, Software Architecture, System Design, User Experience (UX), Minimum Viable Product (MVP), Machine Learning, Operating Systems, Data Mining, Statistics, Product Design, Video Streaming, Audio Streaming, Team Management, CloudParadigms
Mobile DevelopmentTools
RabbitMQPlatforms
Oracle, Amazon Web Services (AWS), Azure
Education
- Master's Degree in Computer Science2015 - 2016University of Illinois - Champaign, IL
