John Rinehart

As a member of the the Digital Quantum Matter Laboratory at the University of Waterloo, I assisted in the development of an instrumentation control software, Alfred, and conducted research addressing improved microwave measurement techniques in addition to innovating new superconducting circuit design and control protocols.

• Applied knowledge of microwave engineering to design an infrared filter.
• Assisted with the design of MATLAB object-oriented, websocket-based instrument control system: Alfred. Alfred operates on a client-server model, using JSON objects for the wire protocol.

• Mastered advanced signal processing, controls systems, and communications systems courses (FFT, DFT, wavelet transform, root locus method, QPSK and QAM architectures).
• Studied quantum mechanics, statistical physics, and mathematical methods for physics (Runge-Kutta, gradient descent, path integrals, Fermi-Dirac distribution).
• 4th-year engineering design project involved assessing spectral characteristics of spontaneous interferers in the context of Middleton noise statistics.

Developed a novel microwave interface for a superconducting quantum circuit. Worked alongside the world-class researchers of the Martinis Group (now affiliated with Google, Inc.).

• Designed an aluminum enclosure providing a 50 Ω environment for a custom microstrip printed circuit board I had designed.
• Performed time-domain reflectometry on the manufactured component and verified that the design met the specified spatial and electrical tolerances.

Participated in the development of a disruptive wireless radio technology. This technology has been demonstrated to improve the signal-to-noise ratios in receivers by as much as 40 dB.

• Designed algorithms to use in conjunction with the Ettus Universal Software Radio Peripheral (USRP) cognitive radio system.
• Wrote software in C++ implementing a real-time fast Fourier transform (FFT) algorithm.
• Conducted field tests and corporate product demonstrations validating the robustness of the LHC2 technology.

Wrote a LaTeX continuous integration server using Python (Flask, jinja2, uWSGI), sqlite3, and nginx.

• This application is designed to be easily deployable and allows anyone to host their own LaTeX continuous integration server.
• Features server-side authentication and integrates with Git server webhooks.
• Future version will be shipped in a docker container allowing for application scaling, easy deployment, and isolated development.

Wrote a chat server in Go and a chat client in vanilla Javascript and HTML.

• The application is designed to allow Go channels to manage the simultaneous connection of up to 10,000 simultaneous users on standard hardware.
• The design currently features a server-side log; future versions will include chat time-stamps and token-based authentication.
• Easily deployable in a wide variety of operating systems; future versions will be built using industry-standard continuous integration tools (Jenkins) and unit testing.

• Used a variety of Linux-based distributions (primarily Debian-based distributions) for 10 years.
• Configured OpenVPN, FTP, SSH, HTTP (nginx and Apache) servers and CIFS (Samba) shares in a Linux environment.
• Versed in the following programming languages (in decreasing fluency): Javascript, MATLAB, Go, LaTeX, Java, C++, C, Python (2.7 and 3.6).
• Have taken massive open online courses (MOOCs) in Android development, heterogeneous parallel programming, digital signal processing and machine learning.
• Have contributed to the development of a number of open-source projects (vimtex, Syncthing, among others).
• Understand advanced networking principles (NAT, DNS, traffic routing, etc.).
• Have taken massive open online courses (MOOCs) in Android development, heterogeneous parallel programming, digital signal processing and machine learning.
• Fluent in English and Spanish; conversational-level French.