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Oleksandr – Golang, PostgreSQL, Git, experts in Lemon.io

Oleksandr

From Ukraine (UTC+3)flag

Back-end Web Developer|Strong senior

Oleksandr – Golang, PostgreSQL, Git

Oleksandr is a proficient back end developer with over 3 years of experience in Golang, Postgres, Docker among others. His prior major experience as a project manager complements his current solid expertise in back end development. He follows principles of writing tests for the code and strives to always make the code optimised.

18 years of commercial experience
Main technologies
Golang
3 years
Additional skills
PostgreSQL
Git
ELK
GCP
Docker Compose
RabbitMQ
Blockchain
Redis
Memcache
gRPC
Python
Kubernetes
Jenkins
TDD
NATS.io
Protobuf
Docker
Direct hire
Possible
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Experience Highlights

Software developer
Nov 2020 - Nov 20211 year
Project Overview

A service that creates automatically generated content from various sources (YouTube, Facebook, Instagram, Pinterest, Twitter, TikTok etc). The generated content is regularly updated in stories-like frames on the websites and mobile apps.

The product has an admin panel where customers define a content topic hierarchy, and create/start automated generation of the stories. Stories later integrated as an iframe to the websites, and into the mobile apps via SDK. The platform gets content from a variety of sources and compiles it into stories. Once put on an external web/app, the content is updated in an automated manner. The platform has lots of integrations, scrapers, monetization, verbose dashboards, and reporting on stories performance. It is also possible to set up tags/topics and enable intelligent automated content search.

Responsibilities:

Oleksandr was responsible for platform BAU, new services development, integration with new APIs and modules, architecture development.

Project Tech stack:
golang(go-micro
uber
fx)
K8s
Docker
cockroachdb
nats
Git
Software Developer
Jun 2021 - Nov 20215 months
Project Overview

Intelligent platform that analyses crops growth quality indexes based on pictures from satellites/drones in timely manner. The product allows companies in agricultural sector to automate surveillance on crops growth quality. The customer can select a field using map, select imagery sources (from list of available satellites partners) and start generating reports for the selected area, analyzing variety of growth quality factors.

Responsibilities:

Oleksandr was responsible for creating core integration functionality with satellites imagery sources to get data and process it into crops growth quality reports (using a python-based toolset). Initially, the whole system was written with Scala, now it's been ported to Golang

Project Tech stack:
Golang
Docker
Docker Compose
Git
postrgresql
RabbitMQ
python tools for ML tools
Software developer
Oct 2019 - Jan 20203 months
Project Overview

Crypto currencies exchange that allows customers to purchase a variety of services using tokens. The idea was to develop own token and an exchange platform. The platform was connected to other exchanges thus allowing to transfer tokens into the system, purchase/sell symbols for fiat currencies, purchase a variety of services using own token.

Responsibilities:

Oleksandr worked on internal services and APIs as a touchpoint towards the blockchain core, and handled transactions/accounts/limits for internal clients. Also, he implemented a couple of integrations with external payment providers to deposit/withdraw fiat currencies with credit cards and Paypal (coinpayments, Payrexx). The project has never been launched due to issues on the customer side.

Project Tech stack:
go
PostgreSQL
RabbitMQ
Tokend blockchain core framework
Docker
Git
Software developer
Oct 2018 - Apr 20196 months
Project Overview

The product allowed users to communicate in a social network as well as exchange in-platform currency, transfer it to other users, monetize own content. All currency transactions were stored in a proprietary blockhain. The platform had e-commerce platform, content recommendation system based on geolocation, music streaming, exchange, face recognition-based authentication. Overall system had over 100 services and served 25k qps in peak hours

Responsibilities:

Oleksandr was responsible for the majority of microservices. His main focus was on new features and maintenance for e-commerce platform.

Project Tech stack:
go
Docker
Kubernetes
Jenkins
PostgreSQL
Redis
Memcache
pub
sub
datastore
gRPC
Protobuf
TDD
Git
prometheus ELK for logging
GCP
I worked on internal services and APIs as a touchpoint towards the blockchain core and handling transactions/accounts/limits for internal clients. Implemented a couple of integrations with external payment providers to deposit/withdraw fiat currencies with credit cards and Paypal (coinpayments, Payrexx). The project has never been launched due to issues on the customer side.
Period not defined
Project Overview

The idea was to develop own token and an exchange platform. The platform was connected to other exchanges thus allowing to transfer tokens into the system, purchase/sell symbols for fiat currencies, purchase a variety of services using own token.

Responsibilities:
Project Tech stack:
go
PostgreSQL
RabbitMQ
Tokend blockchain core framework
Docker
Git
My role is Software Developer. I am responsible for creating core functionality for integration with satellites imagery sources to get data and process it into crops growth quailty reports (using a python-based toolset). Initially the whole system was written with Scala, now it's being ported to golang
Period not defined
Project Overview

The product allows companies in agricultural sector to automate surveillance on crops growth quality. The customer can select a field using map, select imagery sources (from list of available satellites partners) and start generating reports for the selected area, analyzing variety of growth quailty factors

Responsibilities:
Project Tech stack:
Golang
Docker
Docker Compose
Git
postrgresql
RabbitMQ
python tools for ML tools
The product has an admin panel where customers define content topic hierarchy, and create/start automated generation of the stories. Stories later integrated as an iframe to the websites, and into the mobile apps via sdk. The platform gets content from a variety of sources and compiles it into stories. Once put on external web/app, the content is updated in automated manner. The platform has a lots of integrations, scrapers, monetization, verbose dashboards and reporting on stories performance. It is also possible to set up tags/topics, and enable intelligent automated content search.
Period not defined
Project Overview

The product has an admin panel where customers define content topic hierarchy, and create/start automated generation of the stories. Stories later integrated as an iframe to the websites, and into the mobile apps via sdk. The platform gets content from a variety of sources and compiles it into stories. Once put on external web/app, the content is updated in automated manner. The platform has a lots of integrations, scrapers, monetization, verbose dashboards and reporting on stories performance. It is also possible to set up tags/topics, and enable intelligent automated content search.

Responsibilities:
Project Tech stack:
golang(go-micro
uber
fx)
K8s
Docker
cockroachdb
nats
Git
I worked as a software developer as a part of 15-person team, responsible for majority of microservices. My main focus was on new features and maintenance for e-commerce platform.
Period not defined
Project Overview

The product allowed users to communicate in a social network as well as exchange in-platform currency, transfer it to other users, monetize own content. All currency transactions were stored in a proprietary blockhain. The platform had e-commerce platform, content recommendation system based on geolocation, music streaming, exchange, face recognition-based authentication. Overall system had over 100 services and served 25k qps in peak hours

Responsibilities:
Project Tech stack:
go
Docker
Kubernetes
Jenkins
PostgreSQL
Redis
Memcache
pub
sub
datastore
gRPC
Protobuf
TDD
Git
prometheus ELK for logging
GCP

Education

2005
Applied Math
Bachelor's
2005
Applied Math
Bachelor's

Languages

English
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