# Brendan Callahan

> iOS and Full Stack developer, with a focus on IoT

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/brendancallahan

## Work Experience
### Lead Software Engineer @ Stealth Startup
Jan 2024 – Jan 2024 | San Francisco, California, United States
- Designed an MQTT-powered communication system for seamless device integration.
- Developed a SwiftUI-based iOS demo app to showcase product capabilities and IoT interactions.

### Full Stack Engineer @ LiquidView
Jan 2023 – Jan 2023 | San Francisco, California, United States
• Developed a Linux-based consumer product with a cloud backend and web application.
• Utilized Flask, MQTT, and AWS services to enhance system reliability and scalability.

### Full Stack Engineer @ expressify.ai
Jan 2022 – Jan 2023 | San Francisco, California, United States
• Built a full stack product and website from scratch, leveraging AWS services.
• Developed an interactive frontend with React and websockets for real-time updates.

### Technical Lead / Senior Software Engineer @ Wynd Technologies, Inc.
Jan 2018 – Jan 2021 | Redwood City, California
• Defined cloud and app software specifications for the Wynd Halo and Wynd Home Purifier IoT products.
• Led migration from microservices to AWS cloud services, designing a new cloud architecture.
• Managed UI/UX design and development, ensuring a seamless user experience.
• Managed cross-functional teams across iOS, Android, and backend, ensuring timely product releases.
• Implemented iOS application, continued maintaining and improving company iOS apps

### Software Developer @ Wynd Technologies, Inc.
Jan 2016 – Jan 2018 | Redwood City, CA
• Built and maintained iOS apps for BLE-powered IoT products, as well as an air quality map and factory configuration app.
• Resolved critical software issues, unblocking product launch.
• Developed and maintained company server infrastructure.
• Managed and trained interns in software development best practices.

### VP of Engineering @ HERITAGE | DIVISION
Jan 2016 – Jan 2016 | Boston, MA
• Developed an iOS application for a Bluetooth-equipped bicycle.
• Maintained company’s web infrastructure and application backend.

### Software Engineer @ Neurala
Jan 2015 – Jan 2016 | Boston, MA
• Developed the iOS applications which interfaced with consumer drones, allowing both user-controlled and autonomous piloting
• Ported a machine learning algorithm to the iOS platform, and developed an app around it for a third party client.

### iOS Developer @ Neumitra
Jan 2013 – Jan 2015 | Boston, MA
• Developed the iOS application for a Bluetooth smart watch which used galvanic skin response to measure user stress.
• Integrated application with calendar, address book, and location, with features allowing the user to track their stress in space and time.

### Undergraduate Researcher @ Massachusetts Institute of Technology (MIT)
Jan 2011 – Jan 2012 | Cambridge, MA
Worked at the MIT Bear Lab to develop a robotic system for automating patch clamping of individual neurons, as well as an associated system for use in optogenetics research, written in Python using the OpenCV and Qt frameworks.  Received honorable mention for outstanding undergraduate research.

### Undergraduate Researcher @ GAMBIT [Singapore-MIT GAMBIT Game Lab]
Jan 2011 – Jan 2012 | Cambridge, MA
Worked on the Adobe AIR platform using ActionScript 3 to develop a game based around dialogue choices, alongside a full-featured game editing tool.


## Education
### BS in Brain and Cognitive Sciences
Massachusetts Institute of Technology


## Contact & Social
- LinkedIn: https://linkedin.com/in/brendan-callahan-a6952189

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Source: https://flows.cv/brendancallahan
JSON Resume: https://flows.cv/brendancallahan/resume.json
Last updated: 2026-03-23