Top Talent like Christopher are on Pangea

Pangea, a YC company, connects companies with fractional talent. Fractional hiring allows companies to move faster and work with more specilaized talent, while giving talent more flexibilty and independence. If you are talent open to fractional work, apply here. If you’re a company looking for high-quality fractional talent, learn more here.

Christopher Renfrow

Full-stack Engineer • Mesa, AZ, US
Android
Mobile App Development
Kotlin
Scrum Method
Java
Android Studio
Process Improvement
Available for hire fromNegotiable
Contracts
Full-Time Roles
Software engineer specializing in Android development with additional experience developing Kotlin, Java, and C# APIs, leading engineers and Scrum
I have more than 5 years of experience leading teams of software engineers to consistently deliver high quality software at the managerial and director levels along with more than 10 years designing, developing and maintaining various software applications. I always strive to deliver high quality, intuitive products that exceed customers' expectations. I have an affinity for security and revel in solving challenging problems while collaborating with and learning from rock star teammates. I’m a natural leader trained in using Scrum to facilitate increased productivity, delivering on commitments, and continuous improvement.

Projects

Discount Tire - Image Compression Algorithm

Produced an algorithm to take TIFF image file with a base64 string length of on average 40,000 characters and yielded a readable TIFF image of less than 4000 characters while maintaining the maximum clarity, size and detail Currently in use at Discount Tire stores across the US for transactions and line of credit applicationsSee More

Rowing Machine and Mobile Companion Apps

Built features included on the Rowing machine as well as features in the companion app for Android phones

Alloy Fusion

Built the Fusion application from the ground up to control IoT devices via Z-Wave and BLE interfaces

SmartRent Resident/Alloy Home App

Applications to control IoT devices in multifamily (SmartRent Resident) and single family (Alloy Home) homes.

Garmin VIRB

Camera control for Garmin VIRB action cameras

Work History

F

Software Engineer

Fasetto- Built Android app from the ground up
D

Consultant

Discount TireSep 2022 - Oct 2022 • 2 mos- Produced an algorithm to take TIFF image file with a base64 string length of on average 40,000 characters and yielded a readable TIFF image of less than 4000 characters while maintaining the maximum clarity, size and detail
I

Consultant

IdMissionJun 2022 - Jan 2023 • 8 mos- Create Android App to run on x86 machines to verify face match against existing customer base for lookup to allow entry into store or request enrollment prior to entry - Perform payment based on data submitted by a Point of Sale app and data retrieved based on face match
H

Senior Software Engineer

HydrowSep 2021 - Feb 2023 • 1 yr 6 mos- Work with Product Owners, Designers and other Developers to expand high level requirements into actionable User Stories and Acceptance Criteria - Projects include refactoring the existing infrastructure for heart rate monitors (BLE and ANT+) with more stable and flexible implementation and adding support for Apple Watch connectivity. - Create unit and end to end tests for new development - Advocate best practices from both a general software engineering perspective as well as from an Android ecosystem perspective
S

Senior Software Engineer, Team Lead, Engineering Manager, Director of Engineering

SmartRentNov 2017 - Sep 2021 • 3 yrs 11 mos- Joined early in startup phase (employee #12) - Built Android application nearly from the ground up, adding features for controlling different smart home devices, managing access codes for door locks, time-based and event driven automations to change device states - Managed Native Mobile team of iOS and Android growing the team from 3-8 engineers - Worked with Product Owners, Designers, Developers and other stake holders to plan out new features, resolving bugs and technical while delivering a great experience to users - Analyzed and and decided tradeoffs between different implementations, proofs of concept, minimum viable products, etc. to best meet the needs of the business and customers - Managed Jira company-wide - Directed the native mobile teams as well as the React Native teams as the company grew - Worked with C-Team and Product Leadership to create long term plans - Analyzed tradeoffs between different technologies (native Android/iOS vs React Native vs Flutter, etc) to determine best fit for new and existing projects
T

Consultant

TyfoomJan 2020 - Apr 2020 • 4 mos- Added daily questionnaire form functionality to the Tyfoom app - Built forms using a flexible UI driven by server side configuration to specify the questions and applicable responses - Included capturing images and/or video from camera and gallery, as well as recording audio
X

Consultant

XcelMeJan 2019 - Apr 2019 • 4 mos- Created a proof of concept app to interact with prosthetic limb controllers to calibrate and monitor signals received from tactile inputs on the prosthesis as well as the resulting motion - Communicated with the prosthetic controllers via BLE using a proprietary messaging protocol - Created in-app graphs to show signals coming from the various inputs
G

Senior Android Software Engineer

Garmin International, IncNov 2016 - Nov 2017 • 1 yr 1 mo- Added functionality to the Virb action camera app on shared across iOS, Android, Mac and Windows clients to aid in integrating the Virb 360 camera - Created camera display and controls to change settings, capture images and start or stop recording video remotely over Bluetooth, Wi-Fi or ANT+ - Created initial proof of concept Android app for surveillance camera and for automotive backup cameras
A

Full Stack Software Engineer, Scrum Master

AprivaMay 2012 - Oct 2016 • 4 yrs 6 mos- Designed and implemented Android client and server databases, including the use of stored procedures for efficiency, security and reusability - Created C# ASP.NET REST APIs to support various applications - Created websites using HTML, CSS, Javascript, JQuery, C#, ASP.NET MVC3 and AJAX - Built Dave & Buster’s Charging Station Android application and supporting API - Created proof of concept applications for universities and Fortune 50 companies including loyalty rewards programs, vending machine operation and payment processing Android apps

Education

Arizona State University

Bachelor of Science, Computer ScienceAug 2008 - May 2012

How Pangea Works

Effortlessly discover top talent

We’ve distilled the candidate search from endless hours down to just a few minutes. Using Pangea’s AI-powered search tools, you can find top fractional talent able to take on your next project. Our system looks at your company’s niche and your needs to find the perfect match faster than any traditional hiring platform.

Start working with talent today

The top talent on Pangea is ready to get started with you right now. You can message or hire a candidate right from their profile page and start assigning work as soon as they respond. And the best part? Pangea’s fractional contract structure lets you start small and ramp up as your needs change, keeping your costs manageable and your team’s capabliities flexible.

Track work and invoices in one place

Assign tasks, track progress, and complete invoices all on Pangea. We’ve combined every part of the hiring process into one platform to eliminate the miscommunication that’s unavoidable on other freelance platforms. We even send out 1099s to your contractors at the end of the year!

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call
Software engineer specializing in Android development with additional experience developing Kotlin, Java, and C# APIs, leading engineers and Scrum
I have more than 5 years of experience leading teams of software engineers to consistently deliver high quality software at the managerial and director levels along with more than 10 years designing, developing and maintaining various software applications. I always strive to deliver high quality, intuitive products that exceed customers' expectations. I have an affinity for security and revel in solving challenging problems while collaborating with and learning from rock star teammates. I’m a natural leader trained in using Scrum to facilitate increased productivity, delivering on commitments, and continuous improvement.

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call

Top Talent like Christopher are on Pangea

Pangea, a YC company, connects companies with fractional talent. Fractional hiring allows companies to move faster and work with more specilaized talent, while giving talent more flexibilty and independence. If you are talent open to fractional work, apply here. If you’re a company looking for high-quality fractional talent, learn more here.

Christopher Renfrow

Full-stack Engineer • Mesa, AZ, US
Android
Mobile App Development
Kotlin
Scrum Method
Java
Android Studio
Process Improvement
Available for hire fromNegotiable
Contracts
Full-Time Roles

Projects

Discount Tire - Image Compression Algorithm

Produced an algorithm to take TIFF image file with a base64 string length of on average 40,000 characters and yielded a readable TIFF image of less than 4000 characters while maintaining the maximum clarity, size and detail Currently in use at Discount Tire stores across the US for transactions and line of credit applications

Rowing Machine and Mobile Companion Apps

Built features included on the Rowing machine as well as features in the companion app for Android phones

Alloy Fusion

Built the Fusion application from the ground up to control IoT devices via Z-Wave and BLE interfaces

SmartRent Resident/Alloy Home App

Applications to control IoT devices in multifamily (SmartRent Resident) and single family (Alloy Home) homes.

Garmin VIRB

Camera control for Garmin VIRB action cameras

Work History

F

Software Engineer

Fasetto- Built Android app from the ground up
D

Consultant

Discount TireSep 2022 - Oct 2022 • 2 mos- Produced an algorithm to take TIFF image file with a base64 string length of on average 40,000 characters and yielded a readable TIFF image of less than 4000 characters while maintaining the maximum clarity, size and detail
I

Consultant

IdMissionJun 2022 - Jan 2023 • 8 mos- Create Android App to run on x86 machines to verify face match against existing customer base for lookup to allow entry into store or request enrollment prior to entry - Perform payment based on data submitted by a Point of Sale app and data retrieved based on face match
H

Senior Software Engineer

HydrowSep 2021 - Feb 2023 • 1 yr 6 mos- Work with Product Owners, Designers and other Developers to expand high level requirements into actionable User Stories and Acceptance Criteria - Projects include refactoring the existing infrastructure for heart rate monitors (BLE and ANT+) with more stable and flexible implementation and adding support for Apple Watch connectivity. - Create unit and end to end tests for new development - Advocate best practices from both a general software engineering perspective as well as from an Android ecosystem perspective
S

Senior Software Engineer, Team Lead, Engineering Manager, Director of Engineering

SmartRentNov 2017 - Sep 2021 • 3 yrs 11 mos- Joined early in startup phase (employee #12) - Built Android application nearly from the ground up, adding features for controlling different smart home devices, managing access codes for door locks, time-based and event driven automations to change device states - Managed Native Mobile team of iOS and Android growing the team from 3-8 engineers - Worked with Product Owners, Designers, Developers and other stake holders to plan out new features, resolving bugs and technical while delivering a great experience to users - Analyzed and and decided tradeoffs between different implementations, proofs of concept, minimum viable products, etc. to best meet the needs of the business and customers - Managed Jira company-wide - Directed the native mobile teams as well as the React Native teams as the company grew - Worked with C-Team and Product Leadership to create long term plans - Analyzed tradeoffs between different technologies (native Android/iOS vs React Native vs Flutter, etc) to determine best fit for new and existing projects
T

Consultant

TyfoomJan 2020 - Apr 2020 • 4 mos- Added daily questionnaire form functionality to the Tyfoom app - Built forms using a flexible UI driven by server side configuration to specify the questions and applicable responses - Included capturing images and/or video from camera and gallery, as well as recording audio
X

Consultant

XcelMeJan 2019 - Apr 2019 • 4 mos- Created a proof of concept app to interact with prosthetic limb controllers to calibrate and monitor signals received from tactile inputs on the prosthesis as well as the resulting motion - Communicated with the prosthetic controllers via BLE using a proprietary messaging protocol - Created in-app graphs to show signals coming from the various inputs
G

Senior Android Software Engineer

Garmin International, IncNov 2016 - Nov 2017 • 1 yr 1 mo- Added functionality to the Virb action camera app on shared across iOS, Android, Mac and Windows clients to aid in integrating the Virb 360 camera - Created camera display and controls to change settings, capture images and start or stop recording video remotely over Bluetooth, Wi-Fi or ANT+ - Created initial proof of concept Android app for surveillance camera and for automotive backup cameras
A

Full Stack Software Engineer, Scrum Master

AprivaMay 2012 - Oct 2016 • 4 yrs 6 mos- Designed and implemented Android client and server databases, including the use of stored procedures for efficiency, security and reusability - Created C# ASP.NET REST APIs to support various applications - Created websites using HTML, CSS, Javascript, JQuery, C#, ASP.NET MVC3 and AJAX - Built Dave & Buster’s Charging Station Android application and supporting API - Created proof of concept applications for universities and Fortune 50 companies including loyalty rewards programs, vending machine operation and payment processing Android apps

Education

Arizona State University

Bachelor of Science, Computer ScienceAug 2008 - May 2012

How Pangea Works

Effortlessly discover top talent

We’ve distilled the candidate search from endless hours down to just a few minutes. Using Pangea’s AI-powered search tools, you can find top fractional talent able to take on your next project. Our system looks at your company’s niche and your needs to find the perfect match faster than any traditional hiring platform.

Start working with talent today

The top talent on Pangea is ready to get started with you right now. You can message or hire a candidate right from their profile page and start assigning work as soon as they respond. And the best part? Pangea’s fractional contract structure lets you start small and ramp up as your needs change, keeping your costs manageable and your team’s capabliities flexible.

Track work and invoices in one place

Assign tasks, track progress, and complete invoices all on Pangea. We’ve combined every part of the hiring process into one platform to eliminate the miscommunication that’s unavoidable on other freelance platforms. We even send out 1099s to your contractors at the end of the year!

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call
Pangea empowers fractional work across the world for marketing and design roles.