Software & Automation Engineering
We build software that holds up in production.
JJeff Development LLC designs and builds custom applications and automation tooling for teams that need things done right the first time — from mobile apps to the infrastructure automation that keeps large networks running.
What we do
App Development
Native and cross-platform mobile & web applications, built from concept through production release and ongoing support.
Automation & Tooling
Python-based automation, internal tooling, and SDKs that remove manual work from engineering and operations teams.
Integration & APIs
RESTful API design and third-party integrations that connect existing systems without adding fragility.
Projects
Live work, plus what's next.
FitDive
Reads a Garmin dive computer's .fit file and logs the
dive straight into a diver's MySSI e-logbook — dive site, depth,
time, temperature, and gas filled in automatically. Live on the
App Store.
In development
Astronomy forecasting app
A stargazing conditions app that scores how good a night will be at your saved locations.
About
JJeff Development LLC is founded by Justin Jeffery, a software and automation engineer with a background designing and building production systems and developer tooling for enterprise clients. JJeff Development applies that same discipline — clear scope, reliable delivery, code that's built to be maintained — to custom software and app development work.
Get in touch
Tell us about the project — app, internal tool, or automation work — and we'll follow up.
Prefer LinkedIn? Connect at linkedin.com/in/justin-jeffery.