Senior Back-end Developer
2020 - 2021Startup- Developed the back end from scratch based on Node.js and TypeScript with self-creating swagger documentation. All project was deployed on AWS and custom policies were made. The repository was on Bitbucket and the CD/CI was done to the AWS service.
- Tracked and fixed bugs with Jira as a reporting tool, helping our team to keep in the same direction. I worked with five front-end developers and a QA.
- Managed to work fast enough to support front-end developers and deploy the endpoints on time. We had Figma wireframes and UI designs, so all necessary information about the business logic is there.
- Worked on dependency injection done with TypeDI, using TypeOrm for the database. Smart validation was done thanks to the class validator.
Technologies: Node.js, TypeScript, PostgreSQL, AWS, Figma, Jira, Postman, ServerlessSecurity Improvements
2020 - 2020Advertise Purple- Implemented a more complex password policy, SSH token renewal/rotation solution. Implemented an HMAC security authentication solution.
- Configured and implemented AWS WAF protection and performed AWS code deployment by a centralized server solution with Bitbucket pipelines, a speed up build, and a deployment process. Implemented stream for all back-end logs to AWS CloudWatch,.
- Actively participated in the development process both on the back-end and front-end side. Wrote unit and E2E tests.
Technologies: Amazon Web Services (AWS), MySQL, Angular, AWS, Node.js, JavaScriptBack-end Developer
2018 - 2020JoinHelloFriend- Developed RESTful APIs from scratch for mobile application for a client's app, for a business app, and an administration panel.
- Integrated payment methods including Stripe and Plaid.
- Developed an administration panel based on React and participated in React Native apps for Android and iOS.
- Optimized performance for intensive load with Redis cache.
- Developed from scratch chat server with a lot of features, as well as real-time updates in apps.
Technologies: React, Sockets, Redis, MongoDB, PostgreSQL, Node.js, Android, iOS, Linux, UbuntuProof of Concept Developer
2018 - 2018Startup- Deployed Python AI engine on-premises. The main task was to add any new data to the training set.
- Designed a Node.js-based back-end API to access the data from the AI engine.
- Implemented an Apigee edge API layer for security, load balancing and analytics, and response cache.
- Utilized Kubernetes to configure and deploy Docker containers with node.js on-premises and use Apigee load balancer for scaling.
- Added initial training data with Pandas and train the regression AI with NumPy and Sklearn.
Technologies: Swagger, Apigee, TypeScript, Docker, MariaDB, Node.js, Scikit-learn, Pandas, NumPy, PythonBack-end Node.js Developer
2018 - 2018Society Ltd. (via Toptal)- Developed the back-end logic for games, exchanging, depositing, and withdrawing steam-based items and skins.
- Utilized RethinkDB as a general-purpose database, which gave some useful advantage of developing and scaling.
- Ran each service of endpoints in a different docker container for low latency and high scalability by managing all with Rancher.
- Developed a billing service where the payment was based on the G2A gateway.
- Collaborated with the front-end developer and the team's lead back-end developer.
Technologies: Payment Processing, Rancher, Docker, Redis, RethinkDB, Async.js, Node.jsDeveloper | Engineer
2017 - 2018Startup- Implemented logic for take-off to locate the electric Pylon by entering GPS coordinates and tracking the next one using OpenCV and compass because of magnet induction on the cables.
- Located the next Pylon and took shots before it above it, store the point, and after it—stored GPS coordinates.
- Exported GPS coordinates for flight roadmap, where the result was a professional video created from DJI software.
- Used DJI SDK on Raspberry Pi with Pi camera mounted on gimble.
Technologies: Embedded C++, DJI SDK, Gimbal, Drones, Raspberry Pi, OpenCV, Navigation, CompassFront-end and Back-end Developer
2017 - 2017WeAreVR- Added new features to the existing product. Made improvements in the front and back-end such as adding new objects and preparing thumbnails for the 3D object arranged in categories.
- Created a marketplace and migrated from an existing CDN to a new one.
- Dockerized the application and bundled scripts for the production stage.
- Generated high and low-resolution mesh objects for front-end performance optimization.
Technologies: 3D, GridFS, Three.js, JavaScript, MongoDB, Node.jsFull-stack Developer
2014 - 2017CheckPoint R&D- Contributed to R&D of hardware of ECG medical device, and developed reliable Bluetooth Low Energy protocol for data stream using C++.
- Developed Android application for communication with medical devices, Java-based QRS PPG detector, and vital data analysis.
- Created scalable Node.js server with external C modules, for intensive stream loads with Socket.io solution, and live stream of real patients.
- Designed and developed the company data architecture for transmitting, analysis, storage, and visualization.
- Integrated MATLAB modules for research and training data for the future neural network (Python and C middleware components).
- Deployed custom ERP and CMS systems in medical centers and hospitals using HTML5, SVG, D3.js visualization.
- Developed web interfaces based on Angular framework for dynamic medical data CRUD and RESTful back-end API on Node.js, Expres; passport handle with authentication front-end requests and that can stay open for third-party medical ERP systems.
Technologies: Ubuntu, Git, MATLAB, Bluetooth LE, HTML5, D3.js, JavaScript, Java, MongoDB, MySQL, Angular, Socket.IO, Node.js, C++, Python, PHP, Embedded Software, Embedded Systems, Bluetooth, WiFi, Connectivity, Low-level Programming, AndroidCo-founder and Consultant
2011 - 2013R&D Partners- Created an R&D platform for tourism and travel management.
- Maintained huge data storage of books and e-books with a two-way API service for book stores, including payment and discount solutions.
- Developed iOS and Android mobile applications based on PhoneGap technology and custom native components.
- Designed and developed eCommerce platforms for bookstores with responsive design and an AngularJS-based user interface for more flexibility.
- Utilized Java and Objective-C modules for AMQP and API instant communication.
Technologies: Ubuntu, Bootstrap, AngularJS, jQuery, Objective-C, Java, SQLite, PhoneGap, AMQP, Sphinx Search Engine, MySQL, PHPSenior Web Developer
2005 - 2011EBPW- Served as a team leader during the whole process of building custom cross-browser CMS and ERP development.
- Developed payment and accounting solutions, business automation, e-business web portals, performance optimization, scalable architectures, and high-quality own megapixel IP and GPRS camera and video processing.
- Created a real-estate framework for B2B and B2C web applications.
Technologies: FreeBSD, JavaScript, Sockets, Web Services, Git, PostgreSQL, MySQL, Python, C, PHP
Radoslav Peev Peev
Artificial Intelligence (AI) Developer in Burgas, Bulgaria
Member since July 23, 2017
Radoslav is a full-stack developer with a passion for electronics. Since 2009, he has worked remotely. Most recently, Radoslav has been working in a start-up environment where deadlines are nearly every week and choosing the correct technology is critical for the project.
Radoslav is now available for hire
Portfolio
- StartupNode.js, TypeScript, PostgreSQL, AWS, Figma, Jira, Postman, Serverless
- Advertise PurpleAmazon Web Services (AWS), MySQL, Angular, AWS, Node.js, JavaScript
- JoinHelloFriendReact, Sockets, Redis, MongoDB, PostgreSQL, Node.js, Android, iOS, Linux, Ubuntu
Experience
- JavaScript 15 years
- PostgreSQL 9 years
- Node.js 8 years
- Python 5 years
- Java 5 years
- MongoDB 5 years
- React 2 years
- Artificial Intelligence (AI) 1 year
Availability
Part-time
Preferred Environment
Git, Ubuntu
The most amazing...
...things I've developed in my last startup for Cardiology Telemedicine: analyze and transfer ECG PPG data from patients and display real time in medical centers.
Employment
Skills
Languages
PHP, Python, HTML5, JavaScript, HTML, SQL, CSS, C, C++, Java, TypeScript, Solidity, Objective-C, Delphi, Embedded C++Frameworks
Koa, Express.js, Angular, Django, PhoneGap, AngularJS, Swagger, Bootstrap, React Native, CompassLibraries/APIs
Stripe API, Stripe Connect API, Twilio API, Node.js, Socket.IO, jQuery, D3.js, React, Sockets, AMQP, Three.js, GridFS, NumPy, Pandas, Scikit-learn, Apigee, Vue.js, OpenCVTools
Eclipse IDE, Bitbucket, Auth0, Git, Notepad++, MATLAB, Mongoose, Figma, Jira, Postman, DJI SDKParadigms
DevOps, Object-oriented Programming (OOP), Agile Software Development, Unit Testing, E2E Testing, Mobile DevelopmentPlatforms
Amazon Web Services (AWS), Docker, AWS EC2, Ubuntu, Android, Apache2, Visual Studio Code, FreeBSD, Bluetooth LE, Rancher, iOS, Raspberry Pi, LinuxStorage
Redis, MongoDB, MySQL, Databases, Memcached, PostgreSQL, RethinkDB, Elasticsearch, Neo4j, Sphinx Search Engine, SQLite, MariaDBOther
Load Balancers, Web Security, Single-page Applications (SPA), Full-stack, SVG, APIs, Middleware, Third-party APIs, Software Integration, Software Implementation, TypeORM, Bluetooth, Low-level Programming, Connectivity, Embedded Software, Embedded Systems, Ubuntu Server, Serverless, Push Notifications, AWS DevOps, Data Analysis, AWS, Digital Health, WiFi, Web Services, 3D, Async.js, Payment Processing, Artificial Intelligence (AI), Machine Learning, Gimbal, Drones, Navigation
Education
- Bachelor of Science Degree in Electronics2002 - 2007Technical University - Sofia, Bulgaria
- Diploma in Mathematics and Informatics1994 - 2002High School of Mathematics and Natural Sciences - Burgas​, Bugaria
