John Lockwood
Programmer Owner at TackleTronics, LLC
Sacramento, California, United States
Summary
👤
SeniorJohn Lockwood is a seasoned software engineer and founder who specializes in designing and scaling backend systems, with a 13-year track record spanning ETL pipelines, APIs, and multi-tenant databases. As Programmer/Owner of TackleTronics, he built and maintains the DoorToDoor Campaign for iOS, while leading a team that rebuilt a struggling Java ETL system into a Python-based solution using Pandas, Airflow, FastAPI, and SqlAlchemy to support rapid customer growth. He designed a multi-tenant database manager for MySQL 8 and PostgreSQL, migrated from MySQL 5.7, and implemented database strategies for JSON/JSONb, strict typing, and conflict resolution. He has hands-on experience deploying services on AWS with Docker, Kubernetes, ArgoCD, and Terraform, and he authored monitoring docs for Kibana and Grafana to drive reliability. Known for mentoring teammates, on-call rotations, code reviews, and pair programming, he leverages AI-assisted coding to accelerate delivery. Based in Sacramento, CA, he combines strong programming depth with a pragmatic, product-focused mindset toward reliable, scalable systems.
13 years of coding experience
18 years of employment as a software developer
English
Stackoverflow
3,797reputation
1.1mreached
90answers
12questions
winforms
top-5%
if-statement
top-5%
console-application
top-5%
Github Skills (97)
alt10
segwit10
base589
if-statement9
winforms9
deserialization9
cryptanalysis9
bip329
bitcoin9
public-key-cryptography9
console-application9
data-conversion8
python8
cryptography8
converter8
Programming languages (6)
Github contributions (5)
johnwlockwood/karl_data
Jan 2015 - Jun 2018
karld - Data conversion and analysis tools
Contributions:8 PRs, 25 pushes, 9 branches in 3 years 5 months
data-conversionanalysisanalysis-toolsrelational-algebraconversion
johnwlockwood/cooperative
Feb 2015 - Nov 2019
Contributions:50 commits, 26 PRs, 35 pushes in 4 years 10 months
non-blockingintensiveblockingcallbacks
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