Software Engineer
2018 - 2018Citadel Securities- Developed custom Python and C++ software for the European Options Market Making desk.
Technologies: Python, C++Software Engineer
2016 - 2018Jump Trading- Wrote fast-path C++ code for exchange connectivity and order placing.
- Ported legacy C++ software to web technologies using React, D3.js, Django, and Tornado.
- Developed a highly robust multithreaded PyQt application that runs on 400+ trader desktop machines.
Technologies: Full-stack, Back-end, Front-end, D3.js, Redux, React, JavaScript, Python, C++Software Development Engineering Intern
2015 - 2015Palantir Technologies- Improved the JavaScript code performance by 400x (average) for one of our main users.
- Contributed to the API design for the 1.0 release of PlottableJS (Palantir's largest open source project at the time).
- Improved the tooling for the team and reduced build times by up to 30%.
Technologies: D3.js, JavaScript, TypeScriptFreelance Web Developer
2013 - 2015CoLake Care + PeopleGraph- Developed custom CSS pixel-perfect designs from Adobe Illustrator designs.
- Implemented the full-stack of a Laravel (PHP) application, deployed it to production on AWS and used with trial patients.
- Created a Google Chrome extension that improves the social network experience for recruiters.
Technologies: Chrome Extensions, CSS, JavaScript, PHPSoftware Development Engineering Intern
2014 - 2014Microsoft- Developed an iOS app for the customer relationship management team, Microsoft Dynamics.
- Wrote a C# MVC application with a REST API which later served as a data source for the iOS app.
- Researched the new capabilities of iOS 8 in anticipation for the September 2014 launch.
Technologies: iOS, Objective-C, JavaScript, C#Software Development Engineering Intern
2013 - 2013Geonomics- Developed Java code for the full-stack of Geolotto.co.uk.
- Wrote custom CSS rules that ensured cross-browser compatibility all the way to IE6.
- Received a special end-of-internship bonus and return offer in recognition of my great work.
Technologies: Java
Andrei Cioara
Python Developer in London, United Kingdom
Member since February 6, 2019
As an engineer, Andrei enjoys making software run as fast as the hardware allows. Holding a master of engineering degree from Imperial College London, Andrei excelled in his studies and graduated with a first class honors distinction. Andrei has previously worked at Microsoft, Palantir Technologies, Citadel Securities, and Jump Trading.
Andrei is now available for hire
Portfolio
- Citadel SecuritiesPython, C++
- Jump TradingFull-stack, Back-end, Front-end, D3.js, Redux, React, JavaScript, Python, C++
- Palantir TechnologiesD3.js, JavaScript, TypeScript
Experience
- Linux 7 years
- SQL 7 years
- C++ 7 years
- Java 6 years
- JavaScript 6 years
- Python 4 years
- Chrome Extensions 4 years
- React 2 years
Availability
Part-time
Preferred Environment
Amazon Web Services (AWS), AWS, Git, Bash, C++, Python, JavaScript
The most amazing...
...business I've built is Officeroo, alumnus of YCombinator's Startup School and invited for interviews for the W19 batch.
Employment
Experience
- Officeroo (Development)https://www.officeroo.io/
I was responsible for the product architecture, React-based front-end, Django back-end, AWS management, and more. I also managed sales and marketing; including the launch of our product with four beta clients and managing a team of three. We graduated from YCombinator’s Startup School and was invited to the YCombinator interviews, class of W19.
- Cashflow (Development)
This was a personal project for managing personal finances. The app also connects to external APIs for fetching market data. It was written using React, Redux, and Chart.js.
- Palindrome (Development)
Palindrome is a superior replacement for Mac's Finder or Window's Explorer. The features include the following: copy, move, delete, mkdir, mkfile, archive, extract, and synchronize.
I developed this cross-platform two-pane file manager written in Electron.js; using React, Redux, Bootstrap, Redux-Thunk, and Electron.js. - Leetcode.com Community Author (Development)https://leetcode.com/articles/power-of-three/
I wrote five-star editorial articles for software interview questions. It received 50,000 to 100,000 views/article along with positive feedback. The written sample solutions are in Java.
- Technology & Lifestyle Blog (Development)
On this blog, I am the sole owner and editor. On average, I received 10,000+ views per article. My articles frequently trend on Reddit.com/r/programming and News.ycombinator.com; these articles have also been picked up by other syndication websites.
- Personal Website (Development)https://andrei.cioara.me
It has the best SEO. This site was boosted to #1 on both Google and Bing for the keyword "Andrei Cioara" (It has since fallen to #2 as my own blog topped #1). I also designed the custom look and feel for both phone and laptop using plain CSS3 and HTML5.
- Flappy Froggy (Development)
I built this mobile game in Java and published it to the Google Play Store. I collaborated with a talented artist to create game graphics and written the entire physics engine from scratch. The game grossed about £10 with minimal promotion.
Skills
Languages
Python, Python 3, Python 2, JavaScript, JavaScript 6, JavaScript 5, C++, C++11, Java, HTML, HTML5, CSS, CSS3, C, SQL, Java 6, Java 7, HTML4, Bash, Bash Script, TypeScript, C#, Objective-C, PHP, HaskellLibraries/APIs
jQuery, React, React Redux, Pure CSS, Node.js, Python API, JavaScript Charting, Django ORM, HTML5 APIs, Reactstrap, jQuery CDN, Stripe API, Plottable.js, D3.js, Redux Form, GitHub API, JavaScript API for Chrome, Moment.js, PyQt, PyQt 5Tools
GitHub Pages, JavaScript Debugging, JavaScript Toolchain, GitHub, Chrome Developer Tools, Webpack, Webpack 2, Webpack 4, Webpack 3, Git, Redux Thunk, Jenkins, Travis CI, CircleCI, GitLab, GitLab CI/CDPlatforms
Google Chrome, Android, Linux, AWS EC2, Firefox, Amazon Web Services (AWS), Windows, iOSStorage
JSON, MySQL, PostgreSQL, SQLite, AWS S3Other
Data Structures, Algorithms, Technology, C++ Programming, HTML UI, CSS Grid, Bash Scripting, Bootstrap UI, Chrome Extensions, Finance, Sorting Algorithms, Writing & Editing, AWS, Front-end, Back-end, Full-stack, Tornado, Firefox Extensions, EntrepreneurshipFrameworks
Django, React Native, Redux, Electron, Electron.js, Bootstrap, Bootstrap 3, Bootstrap 4, Bootstrap 3+, Bootstrap 2, Laravel, Chrome, Express.jsParadigms
HTML DOM, Agile Software Development, Test-driven Development (TDD), Continuous Delivery (CD), Continuous Integration (CI)
Education
- Master's degree in Software Engineering2015 - 2016Imperial College London - London, UK
- Bachelor's degree in Computing2012 - 2015Imperial College London - London, UK
Certifications
- Mensa Member (High IQ Society)JULY 2017 - PRESENTAmerican Mensa
