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Denis S.
Last update: 25 Jul 2018
SENIOR /team lead
full stack developer with great experience building APIs, working with microservice architecture, experienced in blockchain
Full stack developer. 8+ years experience in software development, RoR, Golang, Docker, AWS, NoSQL and other. 1+ year experience in blockchain (bitcoin and ethereum protocol). Microservices and Agile adept. Beginner in machine learning.

This profile describes 3 persons team experiences, we didn't work separately
All rates are indicative, annual rate includes 20% discount
20% discount on yearly basis
Usually responds within 1 hour
GMT+4 Russia Europian Region
Krasnodar/Russia

EXPERIENCE

Industry Experience

Blockchain & Cryptocurrency, Law & Government, Photo & Video, Food & Drink, Fashion & Style

Product Experience

cloud based self service, Cloud System, Web apps for photo sevices, delivery service app, Delivery app, cloud-based ERP system, Service for for scrapping sites

PORTFOLIO HIGHLIGHTS

Jun `18 – Jun `18

ERC20 token monitoring service

Tech Lead, developer

Service analyzes Ethereum blockchain and provides different analytics data on ERC20 tokens. node.js, python, pandas, docker, blockchain, ethereum, rabbitmq

Technologies Stack:

Node.js Python RabbitMQ Docker Ethereum Blockchain

Industry:

Blockchain & Cryptocurrency

Product:

cloud based self service

Works:

Oct `17 – Jun `18

8 months

GPU mining management system

Tech Lead, developer

With this service crypto-miner can manage and monitor a lot of crypto-mining devices from the browser. System has agent written on Golang, RoR backend, ReactJS frontend and Elasticsearch database. golang, ruby on rails, react.js, elasticsearch, socket, crtypto mining

Technologies Stack:

React.js Ruby on Rails Elasticsearch Golang Socket Programming RabbitMQ Cryptocurrency Microservices

Industry:

Blockchain & Cryptocurrency

Product:

Cloud System

Works:

Jan `18 – Apr `18

3 months

Crypto Mining Pools monitoring

Tech Lead, developer

Useful tools for monitoring and analyzing a lot of mining pools from one page. Monitoring dashboard, Telegram Bot, NodeJS application for operation with alerts, few Golang microservices and messaging with RabbitMQ.

Technologies Stack:

Node.js Ruby Elasticsearch Golang RabbitMQ Grafana Microservices

Industry:

Blockchain & Cryptocurrency

Product:

Cloud System

Works:

Mar `17 – Oct `17

7 months

State Inspection of Constructions projects

Tech Lead, developer

The initial goal was to create private service for applicants and integrate it with the Public Services Portal gosuslugi.ru. Users can monitor requests status, upload a lot of documents and get extra services.

Technologies Stack:

JavaScript PostgreSQL Ruby Ruby on Rails

Industry:

Law & Government

Product:

Cloud System

Works:

Mar `16 – Jan `17

10 months

Local social network for photographers

Tech Lead, developer

Customer's goal was to create a local social network where photographers can share their photos and vote for best ones. Private voting mechanism, activity feed and integration with facebook. ruby on rails, javascript, postgres

Technologies Stack:

Ajax AWS JavaScript jQuery PostgreSQL Ruby on Rails

Industry:

Photo & Video

Product:

Web apps for photo sevices

Works:

May `16 – Nov `16

6 months

Restaurants delivery service

Tech Lead, developer

Customer's goal was to create city restaurants delivery service. Order processing system, integration with restaurant management system and payment processing system. Ruby on Rails, Postgres

Technologies Stack:

API JavaScript PostgreSQL Ruby on Rails

Industry:

Food & Drink

Product:

delivery service app, Delivery app

Works:

Feb `15 – Oct `15

8 months

WarehouseApp

Tech Lead, developer

Custom accounting system for fashion wholesale business. CRM, warehouse management, accounting, purchasing and reporting are in one web application. We have started with developing small service for warehouse management and ended up with ERP.

Technologies Stack:

Ajax JavaScript jQuery Ruby Ruby on Rails

Industry:

Fashion & Style

Product:

cloud-based ERP system

Works:

Feb `14 – Nov `14

9 months

Fashion website scraping platform

Tech Lead, developer

This is an advanced data scraping platform that support 50+ fashion websites. User provide URL of products or their categories from supported websites and get data in excel, pdf or on ecommerce website. ruby on rails, postgres, data scrapping

Technologies Stack:

AWS JavaScript Ruby Ruby on Rails

Industry:

Fashion & Style

Product:

Service for for scrapping sites

Works:

Blockchain & Big Data agency #332

1-10
Krasnodar/Russia
GMT+4

Industries

Statistics & Atalytics, Blockchain & Cryptocurrency, Data Science & Machine Learning

We are an experienced software development team that builds startups from scratch using cutting-edge technologies.