Freelance Developer
2016 - PRESENTClients (via Toptal)- Developed a RESTful back-end API and a JavaScript/Ajax front end to enable users to browse audio samples based on selected filters.
- Optimized web apps for use in Google App Engine, Google Cloud SQL, and Docker.
- Improved the performance of deep learning LSTM models for audio processing of music.
- Made a C++ library available to Python software using SWIG.
- Integrated video codec libraries with openh264 to produce MP4/H264 videos with the emphasis on broad playback compatibility.
- Developed a web app based on Django/JavaScript React to manage and monitor data collection tasks on Amazon Mechanical Turk via their developer API.
Technologies: C++, Python, Deep Learning, Image Processing, Web Full-stack TechnologiesSoftware Engineer
2015 - 2016Symetrica Security Ltd- Developed a UI for a hand-held radiation detector based on GTK3, including internationalization and custom widgets.
- Developed Python web-based monitoring of a remote system including the collection of health parameters via a HTTP RESTful API.
- Integrated C++ components into pre-existing distributed RPC framework, including adding a RESTful API.
- Wrote requirements and designed a desktop tool to manage handheld devices and to offload data, written in C# GTK#. Developed the back-end C# code to connect to the device via HTTP. Built this tool to be operated in a cross-platform Windows/Linux environment.
- Created a custom GTK widget for viewing graph data—including zooming, panning, and overlaying template data.
Technologies: Python, PHP, C++, C, C#, GTK3, i18nApplications Developer
2014 - 2015Hallmarq Veterinary Image Ltd- Implemented a major refactoring of code to separate 2 closely coupled, real-time DLL components—to enable remote operation via ethernet.
- Developed a fee-per-scan calculation web application with Python Pyramid and MySQL.
- Optimized DSP functions with ARM assembly/intrinsics to run on an embedded processor. The final speed exceeded the then currently existing Project Ne10 library.
- Created a functionality that did report generation and PDF invoicing from billing system (written in Python) to be used by the accounts department.
- Ported Windows C++ centric spectrometer components to ARM/embedded Linux.
Technologies: C, C++, PHP, Embedded Systems, RPCSoftware Engineer
2013 - 2014Kinatomic Technology- Developed a live video stitching desktop app to take multiple USB/IP web cameras and combine them into a video stream for viewing or saving to disk.
- Developed an Android mobile turn based game based on Kivy. Wrote the graphics, game logic and AI for other computer players. Oversaw design and production of UI and art by contractors. Released the game on the Google Play store.
Technologies: Software DevelopmentSenior Technologist
2001 - 2007BAE Systems- Developed a real-time, embedded system to bridge between an existing ARINC 429 avionics databus and newer Ethernet-based systems AFDX. This used bare-metal C/C++ on a NetSilicon processor.
- Built a augmented reality HUD/moving map prototype display system to enable commercial pilots to prevent errors in taxiing. This was integrated into a flight simulator. It used C++/OpenGL.
- Designed and implemented a C++/C prototype controller pilot data link communication system for airport ground movement messages. Integrated them into a flight simulator.
- Conducted pilot trials in a simulator to gather feedback on prototype avionic systems. Tested the prototypes at international airports to evaluate their performance.
- Tracked the progress and controlled resources for engineering projects.
Technologies: Real-Time, C++, Avioncs, IP Protocols, C, Embedded Systems
Tim Sheerman-Chase
Realtime-system Developer in Portsmouth, United Kingdom
Member since November 6, 2016
Tim is a software engineer with experience in a wide range of industries, technologies, and academia. His primary programming languages are C++ and Python. He is adept at real-time/multi-threaded systems. Tim also has a degree in physics and a PhD in machine learning/image processing.
Tim is now available for hire
Portfolio
- Clients (via Toptal)C++, Python, Deep Learning, Image Processing, Web Full-stack Technologies
- Symetrica Security LtdPython, PHP, C++, C, C#, GTK3, i18n
- Hallmarq Veterinary Image LtdC, C++, PHP, Embedded Systems, RPC
Experience
- C++ 14 years
- Realtime-system 10 years
- Python 7 years
- Machine Learning 4 years
- Computer Vision 4 years
Availability
Part-time
Preferred Environment
Visual Studio, Eclipse, Qt Creator, Git
The most amazing...
...project I've worked on is helping pilots taxi at an airport based on prototype avionic displays.
Employment
Experience
- PyFeatureTrack (Python) (Development)https://github.com/TimSC/PyFeatureTrack
A feature point tracking in Python 2 or 3, using the well-known KLT method.
- Implementation of a RESTful GIS API in PHP (Development)https://github.com/TimSC/microcosm
An implementation of the OpenStreetMap API 0.6. The back-end database can be either SQLite or PostGIS/PostgreSQL. It has unit tests for many functions.
- PhD Thesis: On the Automatic Recognition of Facial Non-verbal Communication Meaning in Informal, Spontaneous Conversation (Development)https://web.archive.org/web/20151220190326/http://personal.ee.surrey.ac.uk/Personal/T.Sheerman-chase/content/thesis-tim-sheerman-chase.pdf
Non-Verbal Communication (NVC) comprises all forms of interpersonal communication, apart from those that are based on words. NVC is essential to understand communicated meaning in common social situations, such as informal conversation. The expression and perception of NVC depend on many factors, including social and cultural context.
- License Key Management in C++ (Development)https://github.com/TimSC/rsa-license-key
These are key management tools for software licensing and activation.
Skills
Languages
Embedded C++, C, C++, Embedded C, Python, XML, HTML, SQL, PHP, MUMPS, CSS3, HTML5, JavaScript, UML, ARM Assembler, CSS, BashLibraries/APIs
OpenCV, Scikit-learn, OpenStreetMap API, SpatiaLite, GEOS, Shapely, Protobuf, Kivy, SciPy, NumPy, Keras, React, Matplotlib, SQLAlchemy, FFmpeg, PySide, LeafletJS, OpenAL, OpenLayers, Sockets, Flickr API, SDL, OpenGL, jQuery, OpenH264, Flask-RESTful, Google Apps, REST APIs, Spotify API, TensorFlow, SklearnPlatforms
Linux, Windows, Embedded Linux, Google App Engine, Android, Docker, WordPress, Google Cloud Platform (GCP), LAMPOther
APIs, Realtime-system, Computer Vision, Image Processing, Multithreading, Debugging, Machine Learning, RTSP, g++, API Design, Messaging, RESTful Web Services, Amazon Mechanical Turk, Cython, CrowdFlower, Object Recognition, Audio Processing, Gunicorn, Deep Neural Networks, Deep Reinforcement Learning, Video Encoding, Video Muxing, Troubleshooting, RESTful APIs, Restful, Augmented Reality (AR), Artificial Intelligence (AI), Sensor Data, 3D Reconstruction, Simultaneous Localization & Mapping (SLAM), OAuth, Ajax, Scraping, Objects, TCP/IP, Microsoft Media Foundation, Embedded Systems, Object Tracking, Digital Signal Processing, Ethernet, Video Processing, Version Control, MessagePack, Deep LearningFrameworks
Django, Django REST Framework, Qt, GStreamer, OpenCL, Pyramid, Boost, LIVE555, FlaskTools
GitHub, GTK+, Git, Qt Creator, Microsoft Visual Studio, SWIG, Amazon SQS, LaTeX, Subversion (SVN), Eclipse IDE, Adobe Premiere Pro, Nginx, GIS, Audacity, Apache, MATLAB, MediaWikiParadigms
REST, Object-oriented Design (OOD), Design Patterns, Object-oriented Programming (OOP), Load Testing, Continuous Integration (CI), Scrum, Agile, Test-driven Development (TDD), Unit TestingIndustry Expertise
Video Streaming, Web Development, Video & Audio Processing, SecurityStorage
PostGIS, XML Parsing, SQLite, MySQL, PostgreSQL, Google Cloud SQL, JSON, Google Cloud, Google Cloud Storage
Education
- Ph.D. degree in Computer Vision2007 - 2013University of Surrey - Guildford, UK
- Master of Physics degree in Physics1997 - 2001University of Kent - Canterbury, UK
