Valentin Tkachev Email & Phone Number

Cambridge, Massachusetts, United States

Projects:Shindig (https://shindig.com)A virtual event, conference and meeting platformStack: Angular, Node.js, Express, MySQL, Sequelize ORM, Redis, Docker, Jest, Jasmine & Karma

Rostov-On-Don, Russia

OneSky (https://www.oneskyapp.com)SaaS translation platform which offers complete localization solutions for all kinds of businesses- Developed from scratch the bookkeeping service to handle all payment transactions- The app was integrated with external services (Xero and Payoneer)- Performed major UI redesign of the client dashboard parts of the app- Improved UI and UX work for both mobile devices and desktop- Some React tutoring for junior developersStack: React, Redux, GraphQL, Node.js, Express, PostgreSQL, Sequelize ORM, GraphQL, gRPC, Redis, RabbitMQ, Docker, JestBadger ManagerThe CRM system to contribute ads on the Facebook platform- Maintained legacy application (Node.js, Express, AngularJS 1.x, jQuery)- Frontend performance audit which greatly improved user experience- Planned and performed legacy code base migration to modern Angular/Symfony stack- Backend and frontend architecture design and implementation- Lead the implementation of end-to-end features from specifications and designs- Automated the work of placing advertisements in FB- Implemented different QoL features, for example infinity scroll, filters, diagrams, etc- Lots of code-reviewStack: Angular (TypeScript), NgRX, RxJS, Symfony (PHP), MySQL, RabbitMQ, Docker, Sockets, Facebook GraphSDK and Facebook BusinessSDKLeadLink (http://lead.link)The lead handling system for contractors and professionals- Initial backend architecture design and implementation- Developed a REST API specification to use it by each client (Web, Android, iOS)Stack: Symfony (PHP), MySQL, Doctrine ORM, Docker, Firebase Cloud MessagingPneMobile app where users can purchase luxury goods cheap- Designed the database architecture with UML schemes to performs well and adapts to app needs- Developed backend infrastructure to handle all crucial platform modulesStack: TypeScript, Node.js, NestJS, RxJS, Angular, NgRX, PostgreSQL, Sequelize ORM, Redis, RabbitMQ, Docker, AWS

Ryazan’, Russia

Project: Casa Di ModaInternational B2B platform for wholesale and retail sales of branded clothing (includes a warehouse, CRM system, white-label and drop shipping).Working in a fully distributed remote team.- Developed a full-text search system- Developed a system for filtering goods by multiple characteristics- Worked with all financial transactions (various ways payments, replenishment of the user's internal account, and purchase of different subscription types)Stack: Laravel (PHP), MySQL, jQuery (JavaScript)Project: Glavbook (https://glavbook.com)The CRM for professionals in the field of daily and short-term rental of residential premises- Refactored the legacy code- Worked on the notification (include the push-notifications) system- Developed the main working field of the booking calendar with a convenient filtering system.- Maintained balance between tech debt, product quality and feature flowStack: Laravel (PHP), MySQL, jQuery (JavaScript)

Kolomna, Moscow, Russia

- Development of products (dry mixes) for the building.- Analysis of materials (including competitive).- Development of the specifications for new materials.- Interaction with the marketing department, customers and construction crews.- Creation of the recommendations for industrial production.- Organization and conduct of pilot production.- Preparation of reports and presentations, participation in negotiations and conferences.

Germany

Carrying out research within the program ECEMP (European Centre for Emerging Materials and Processes Dresden) according to CerHeatPipe (E3) – development and testing of the heat exchanger based on ceramic heat pipes for high-temperature processes.Expansion of capabilities and application areas of technical ceramics in high-temperature processes.Development of software to calculate technological parameters of the cement clinker production process.

Belgorod, Russia

Performing scientific research on the topic "The use of chemical regeneration of heat and synthesized fuel in the portland cement production".Carrying out a technological audit of the rotary kilns and mills and commissioning works at cement plants in Russia (CJSC "Belgorod cement" CJSC "Oskolcement", OJSC "Sebryakovcement" CJSC "Mikhailovcement", etc).Optimization and adjustment of the rotary kilns operation mode with the object of reduce fuel consumption, increase resistance of lining and prevent of clinker dusting.

Doctor Of Philosophy - Phd, Chemical Technology Of Refractory Nonmetallic And Silicate Materials

Translator Of English In Professional Communication

Engineer'S Degree, Chemical Technology Of Refractory Nonmetallic And Silicate Materials, 4.9