Vasile is available for hire
Hire VasileVasile Vilvoiu
Verified Expert in Engineering
Software Developer
Bucharest, Romania
Toptal member since April 1, 2021
Bio
After more than four years working as an engine developer for an open-source RDBMS, Vasile successfully managed and grew a computer vision and AI team from three to 14 members. He is passionate about most things technical and enjoys venturing outside of his comfort zone.
Portfolio
NuoDB
C++, CMake, Algorithms, SQL, Object-oriented Programming (OOP)...
Freelance
Python, OpenCV, TensorFlow, Intel RealSense, C++, Algorithms...
Amazon.com
C++, Python, Elasticsearch, Amazon Web Services (AWS), Algorithms...
Experience
- Software Engineering - 10 years
- C++ - 5 years
- C - 5 years
- DSP - 4 years
- RDBMS - 4 years
- OpenCV - 4 years
- SciPy - 3 years
- Python - 3 years
Availability
Part-time
Preferred Environment
Linux, GNU, C++, C, Python
The most amazing...
...thing I've implemented while developing CUBRID are lock-free structures like lists and hash maps that generated a drastic runtime performance improvement.
Work Experience
Software Engineer
2021 - PRESENT
NuoDB
- Performed as the primary developer for columnar table support in the SQL engine.
- Was an important part of the effort to implement a new (state-of-the-art) query optimizer for the SQL execution engine. Charged with the implementation of selectivity estimation and access path selection, as well as other components.
- Improved the Interesting Properties framework implementation in the legacy optimizer.
- Implemented window function support in the SQL execution engine.
Technologies: C++, CMake, Algorithms, SQL, Object-oriented Programming (OOP), Object-oriented Design (OOD)
Research Engineer
2018 - PRESENT
Freelance
- Developed a high-fidelity, motion and pose invariant, 3D facial reconstruction algorithm that I later implemented into a facial authentication solution.
- Developed a real-time document tracking solution running on budget mobile phones to validate government IDs.
- Implemented a C++ inference framework for deep neural networks running on ARM-embedded devices.
Technologies: Python, OpenCV, TensorFlow, Intel RealSense, C++, Algorithms, Object-oriented Programming (OOP), Object-oriented Design (OOD), Artificial Intelligence (AI), Networking
System Development Engineer
2017 - 2018
Amazon.com
- Started the implementation of a kernel crash collection, classification, and reporting service in the AWS fleet for the (then new) Nitro architecture.
- Contributed actively to the architectural decisions during the design phase.
- Networked with other AWS teams to understand their potential needs from such a system.
Technologies: C++, Python, Elasticsearch, Amazon Web Services (AWS), Algorithms, Object-oriented Programming (OOP), Object-oriented Design (OOD)
Team Lead
2015 - 2017
Apsisware
- Led and grew the computer vision R&D team from three to 14 members by constantly delivering high-quality solutions to our clients.
- Developed many environment comprehension technologies for self-driving vehicles, both high-complexity (deep neural networks) and low-complexity solutions for cheap hardware.
- Implemented some of our researched solutions into production, such as Cortex-A53 and NVIDIA Jetson targets.
Technologies: Python, TensorFlow, SciPy, C++, Embedded C++, Artificial Intelligence (AI)
Software Engineer
2011 - 2015
Arnia Software
- Implemented a window function up to the SQL standard, including evaluation order optimizations.
- Performed in-memory optimizations of aggregate function evaluation, with disk failover and low overhead in corner cases.
- Implemented a lock-free data structures framework and their usage in high contention scenarios, such as object lock tables and page buffers.
- Improved many functionalities, including implementation of SQL functions and Regex support.
Technologies: C, Linux, SQL, RDBMS, Software Engineering, Algorithms, Networking
Software Developer
2009 - 2011
System Innovation Romania
- Developed our 3rd-party localization module for Romania in SAP Business One.
- Developed UI and functionality extensions for SAP Business One.
- Supported clients with their migration to our product.
Technologies: C#, SAP Business One SDK, Crystal Reports
Experience
CUBRID
https://github.com/cubrid/CUBRIDCUBRID is a comprehensive open-source relational database management system optimized for web applications. It's also highly performant and ACID-compliant.
I was one of the core engine developers, working on anything from the parser and query optimizer to the storage and execution engine. Please run "git log –author=Vilvoiu" on CUBRID's GitHub for a complete list of my commits.
I was one of the core engine developers, working on anything from the parser and query optimizer to the storage and execution engine. Please run "git log –author=Vilvoiu" on CUBRID's GitHub for a complete list of my commits.
CBOR Library | libecbor
https://github.com/rimio/libecborCBOR library with no dependencies, small memory footprint, and code size, developed for desktop and embedded applications.
I'm the creator and developer of this open-source project, released under the MIT license.
I'm the creator and developer of this open-source project, released under the MIT license.
Spectogram Tool | specgram
https://github.com/rimio/specgramA small program that computes and plots spectrograms, either in a live window or disk, with support for STDIN input.
Created it because of the lack of such a flexible tool for live monitoring of signal sources, including anything from audio to MHz-wide RF downconverted sources.
I'm the creator and developer of this open-source project, released under the MIT license.
Created it because of the lack of such a flexible tool for live monitoring of signal sources, including anything from audio to MHz-wide RF downconverted sources.
I'm the creator and developer of this open-source project, released under the MIT license.
SSTV Open Source Library | libsstv
https://github.com/rimio/libsstvSSTV is a method to encode images into low-bandwidth audio signals. It is popularly used by amateur radio (ham radio) operators.
This project aims to provide a portable, clean, lightweight library for encoding and decoding such audio signals into raw images.
I'm the creator and developer of this open-source project, released under the MIT license.
This project aims to provide a portable, clean, lightweight library for encoding and decoding such audio signals into raw images.
I'm the creator and developer of this open-source project, released under the MIT license.
Education
2008 - 2012
Bachelor's Degree in Computer Science
Politehnica University of Bucharest - Bucharest, Romania
Skills
Libraries/APIs
SciPy, OpenCV, TensorFlow
Tools
GNU Debugger (GDB), CMake, SAP Business One SDK, Crystal Reports
Languages
C++, C, Python, SQL, Embedded C++, C#
Storage
RDBMS, Elasticsearch
Paradigms
Object-oriented Programming (OOP), Object-oriented Design (OOD)
Platforms
Linux, Amazon Web Services (AWS)
Other
Software Engineering, GNU, Engineering, DSP, Image Processing, Algorithms, Intel RealSense, Concise Binary Object Representation (CBOR), Digital Signal Processing, Artificial Intelligence (AI), Networking
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