Dennis Lukyanov

Experience

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  Mediaman Germany

  Apr 2005 - Oct 2005

  Web developer / Intern

  Participating in the Car Configurator Project for the Daimler Crysler AG (www.mercedes-benz.de). Development and testing of web-interface. Technologies: Java (JEE, JSP), HTML, Javascript, XML.

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  Holzplast

  Jan 2006 - Mar 2010

  IT Manager

  Company's IT-environment development; interaction with external contractors; IT-consulting; IT-department supervision.

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  IPelican

  Jul 2011 - Feb 2014

  CTO / Tech Lead

  iPelican is a global marketplace of HoReCa equipment. Basically, it is a SaaS-platform where suppliers from different locations can publish their goods, and customers can place orders. A supplier can also have their own separate online store on a custom domain/subdomain.Originally based on Spree Commerce (an e-commerce platform I used to work with hard at the time) it then has been transformed into an independent product with a lot of features.I managed the engineering team working on:- Ruby-on-Rails backend (core monolith).Tech stack I personally used in this project:- Ruby-on-RailsThe project was sold in Feb 2014. Show less

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  Convead

  Feb 2014 - Jul 2020

  CTO / Tech Lead

  Convead is a complex digital marketing platform designed primarily for e-commerce, which consists of two parts:- Analytics: tracking a lot of events in Google Analytics style; aggregating customer data and shopping history; building business reports etc.- Actions: designing and showing widgets and forms on sites to collect customer data; designing and sending email and web-push messages etc.I with my colleagues designed the project architecture and managed the engineering team working on:- Ruby-on-Rails backend (business logic monolith);- Elixir highload-optimized services (events tracking server, chat server);- Tiny microservices on Golang;- Numerous number of plugins and integrations for different e-commerce platforms, social networks, and messengers.This is a live highly loaded product and a working business. It counted billions of tracked events and a lot of Tbs of data by the time I quit the project in July 2020.Tech stack I personally used in this project:- Elixir- Ruby-on-Rails- Postgres, Redis Show less

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  Speekify

  Sept 2017 - Mar 2020

  CTO / Co-owner

  Speekify started as a pet project and grew up to an educational platform for learning foreign languages. Its aim is to let you speak a foreign language as naturally as native speakers. At Speekify you listen and repeat a native speech and then ML algorithms check your pronunciation under the hood and rate your recording. We've launched Speekify from scratch within 2 months with friends of mine in 2017. Now it works standalone and has some constant and slightly growing audience.Tech stack I personally used in this project:- Elixir (RESTful API backend)- VueJS (Web frontend) Show less

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  CXMap

  Oct 2017 - Oct 2019

  CTO / Tech Lead

  CXMap is an analytical SaaS-service, designed for digital marketers allowing them to easily create interactive customer journey maps with a fancy drag-and-drop interface. One needs to install a tiny javascript tracking code snippet on the website to see all the customer journey data on the interactive visual map and all the bottlenecks of the customer experience.I designed the project architecture and managed the engineering team working on:- Ruby-on-Rails backend (business logic and GraphQL server);- Elixir highload-optimized services (events tracking server);- VueJS web frontend.Tech stack I personally used in this project:- Elixir- Ruby-on-Rails- Postgres, RedisThe project was suspended by founders in October 2019. Show less

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  NDA

  Jul 2020 - Dec 2020

  CTO / Tech Lead

  [NDA] is an AI-powered Sales' and Support Assistant, designed for online stores to eliminate routine tasks in customer support and improve the overall shopping experience.The prime part of the product is the Chat Server (Elixir) that handles all the communication between customer support agents and customers via website, email, and messengers. The main feature is the AI-powered (backed by Google DialogFlow) automated assistant, that coveres most of the routine customer questions.Another important part is the Analytics Tracking Server (Elixir), designed to handle a large number of requests and having its own business logic, related to handling customer live sessions.I designed the project architecture and managed the engineering team working on:- Ruby-on-Rails backend (business logic and GraphQL server);- Elixir highload-optimized services (events tracking server, chat server, caching server);- Tiny microservices on Crystal;- VueJS web frontend;- iOS/Android apps on Flutter.I also built a fully automated CI/CD process for releases to the Kubernetes cluster.Tech stack I personally used in this project:- Elixir- Ruby-on-Rails- Postgres, Redis, RabbitMQThe project was suspended by founders in December 2020. Show less

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  Buyk

  Jan 2021 - Mar 2022

  Head Of Backend

  Buyk changes your routine by bringing time back to your day delivering groceries, cosmetics & more straight to your door.

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  Samokat

  Mar 2022 - Feb 2023

  Head of Backend Platform (Ruby & Elixir)

  Maintainer of Ruby and Elixir backend platforms in Samokat.tech. GraphQL ambassador.

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  Yandex

  Feb 2023 - Jun 2024

  Head of Backend Development
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  Samokat

  Jun 2024 - now

  Stream Tech Lead

  My key responsibilities as a Tech Lead of the commercial products branch include monitoring the development process, architecture, and performance of 9 products and 18 product teams, helping teams make technical decisions, and managing people. I aim to provide reliable software with the required quality on time at the intersections of OLTP, OLAP, ML, Infra, etc.