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Devin Sewell
Software Architect, Firmware Engineer, Wireless

Expertise and Skillset

Firmware Development Embedded C, ESP-IDF, Nordic SDK, MicroPython
Wireless Protocols Bluetooth, WiFi, RF
Hardware Prototyping ESP32, 3D Printing, Hardware QA
Fullstack Python, Php, MongoDB, InfluxDB, Node.js, React, C#, .ASP, QT
iOS development SwiftUI, Swift, Objective-C
Android development Kotlin, Java
3D Blender, Godot

Portfolio

B-K Lighting

B-K Lighting

Firmware and Wireless API Developer, Lead Mobile Developer.


Developed Swift5 and Kotlin Lighting control apps paired with a Wireless API that supports simultaneous control and grouping of Wifi mesh devices and Lumenetrix BLE devices. Implemented the LuminaSet lighting API and created a custom subpacket structure tailored to BK's hardware, each packet contains device address, automation schedule, lighting control commands, and bitmasks used as switches for device settings. Developed ESP-IDF embedded C firmware with: Wi‑Fi meshing, data‑over‑powerline communication(SIG100 chip), OTA Firmware updates thru WiFi.(2024)

LuminaSet

LuminaSet

Founder, Developer, 3D Artist.


Created a universal automation protocol API for mesh network management that supports mesh sizes up to 256 devices. (2023)

Hive Lighting

Hive Lighting

Lead Mobile Developer, Firmware Consultant.


Built native Swift and Kotlin Bluetooth LE apps for Hive and other Lumenetix based lighting control apps for Crestron, Quazar, and ERP Power; Provided firmware architecture consulting and API design. (2020, 2023)

Ciye | Smart Goggle Integration

Ciye | Smart Goggle Integration

Wireless API engineer [file transfer from BLE device to React]


Ported Ciye's file transfer logic to React from Swift, was able to achieve reliable 10mb+ file transfer over BLE from the nrf52 based hardware in <5min. Implemented Firebase stuff to sync the telemetry data. (2019)

GliscoTech

GliscoTech

Software/Firmware Developer.


Developed "Base Station" firmware, developed functionality: WiFi/Restful API, handled RF data relay to mesh nodes from WiFi base station, run sheduled command automations via RTC. Developed the paired wireless Progressive Web App for lighting schedule and fixture management. (2019)

GOV SaaS / MacOS

REX: procurement management as a service

Software Developer, Server-side Developer.


Developed a procurement tracking and invoicing platform. GOV SaaS / MacOS. (2017,2019)

Chronos Smartwatch

Chronos Smartwatch

Lead iOS (Objective-C) Developer, Bluetooth API Developer, Firmware Consultant.


Built the Bluetooth LE smartwatch connected iOS app and contributed to Nordic SDK based firmware. Highway1.io accelerator start-up (2015,2016)

Edyn

Edyn

iOS Developer.


Developed JSON driven data visualization modules written in Objective-C for Edyn's garden sensor iOS app. Y-Combinator start-up. (2014)

NBCSports SportsDash

NBCSports SportsDash

Lead Fullstack Developer, Front-end Developer.


Lead Developer of browser‑based curation software for live TV. (2013)

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