Oleksandr Chumachov

Email

dionis2384@gmail.com

Extensive architectural, programming, and leadership experience Full stack expertise with technologies including AWS, Docker, Java, JavaScript, Linux/Shell, SQL/RDBMS, and NoSQL Self-motivated, goal-oriented, meticulous about code quality, quick, skilled in management, and domain-focused

LinkedIn

oleksandr-chumachov-a030776

GitHub

achumachev

2024-10-21 —

Software Architect

Preparing architecture visions for various projects and services

Highlights

Go
Python
DataLake
OAuth / OIDC
JavaScript/TypeScript
Asterisk
Microservices
NATS/JetStream
AWS: EKS, S3, etc
PostgreSQL, Redis, MongoDB, ElasticSearch, ClickHouse
Docker, K8N
git

2024-07-03 — 2024-10-14

Java Developer

Implementation of new features

Highlights

Java
Microservices
Docker
RabbitMQ
PostgreSQL, Redis, Prometheus
maven
git
consul

2023-02-01 — 2024-06-21

Solutions Architect

Architectural solutions, Team management, Code review, Integrations with internal and 3rd party systems

Highlights

Microservices
Kafka
AWS
Docker, K8N
Java, JavaScript/TypeScript, Python
PostgreSQL, DynamoDB, S3, Redis, Prometheus
gradle, maven
git

2021-04-01 — 2023-01-31

Java Developer / Architect

Architectural solutions, Development new functionality, Bug fixing, Code review, Integrations with 3rd party systems

Highlights

Microservices
Kafka
AWS: EKS, EC2, KMS, MKS, S3, etc
Java: Spring, Hibernate, JPA etc
Gradle
MySQL, Redis, Prometheus
Docker, K8N
git

2016-08-01 — 2021-04-30

Architect / Software Developer

Architectural solutions, Total re-design and then implement of the system with splitting monolith to microservices, Develop administrative web portals

Highlights

Microservices
SaaS
AWS
Java(Spring, Hibernate, MyBatis etc)
JS (typescript, angularJS, nodeJs, npm)
C++
C#, Excel Plugin
Maven
Postgresql, MariaDB, Redis, InfluxDB, Prometheus
Docker
RabbitMQ
Chef, knife, shell
svn, git

2012-04-30 — 2016-08-31

Dev Lead / Software Engineer / Tech Lead

Architecture solutions, Task planning, Development, Code review, DevOps support, Meeting with clients and involving in functional decisions

Highlights

AWS: EC2, S3, DynamoDB
shell
mvn
CQ/AEM
java (Spring, Hibernate etc)
Groovy
MongoDB
JS (canJS, requireJS, JQuery, etc)
HTML/CSS (LESS and SASS)
Zookeeper
svn, git

2011-12-31 — 2012-04-30

Java (LifeRay) Developer

Features development, Bug fixing

Highlights

Java (spring, hibernate)
Liferay
Javascript
Ant

2010-01-31 — 2011-12-31

Team lead / Architect / Manager / Java Developer

Features planning and development, Sprint planning, Task management, Documentation writing, Communications with project owners

Highlights

Java (EE, EJB, Servlet, GWT, Vaadin)
GlassFish
Flash/Flex
Postresql
Maven
linux, shell
svn, git

2008-11-30 — 2010-12-31

Java Developer / Software Architect / Team Lead

Task management, team leading (code review, helping with studies etc), Architecture solutions, Feature development & bug fixing

Highlights

Java (Spring, EE, GWT, Echo, Jsp, Servlets, Hibernate)
Maven
linux, shell
MySQL, Oracle
SVN, GIT, Jira, Maven, Ant

2008-06-30 — 2008-11-30

Java Developer

Development java application sites.

Highlights

Java (EE, EJB, JPA, GWT, Struts, JSP, Servlets)
MySQL
SVN, CVS
linux
JBoss
ant

2007-06-30 — 2008-06-30

Interface programmer's Department Manager

Mostly supervising. From time-to-time development on PHP and Java EE, Html, CSS

2006-11-30 — 2007-06-30

Interface programmer

Front end development with small part of PHP and Java EE

Highlights

HTML, CSS
JavaScript
PHP
Java (EE, EJB, JPA, GWT, Struts, JSP, Servlets)

National University of Shipbuilding 2001-09-01 — 2007-02-28

Information systems and technologies

M101J: MongoDB for Java Developers

http://education.10gen.com/downloads/certificates/97e05ceeddc8405b82137c52b03bbe71/Certificate.pdf

Issued by 10gen

T.com

https://www.templates.com

Online shop of digital works

TemplateMonster

https://www.templatemonster.com

Biggest web templates online shop

Audubon

https://www.audubon.org

Online bio encyclopedia

Semantria

https://www.lexalytics.com/semantria/

NLP SaaS

PGATour.com

https://www.pgatour.com/

Official Golf Portal

Architecture

Microservices
UML
C4
Streaming
Messaging
Pub/Sub
Cloud
Event Driven Architecture
CAP
SaaS
PaaS
CQRS
Saga
Sharding
Replication
Scaling
Tracing
OAuth/OIDC
OPA
DataLake
OpenAPI
AsyncAPI
Cloud Computing

Programming Languages

Java
Go
Kotlin
Groovy
JavaScript
TypeScript
Python
SQL
sh
C++
C#
PHP

JVM

Spring
Spring MVC
Spring Security
Spring Data
Spring Cloud
Hibernate
JUnit
J2EE
JDBC
JMS
JPA
JSP
Servlets
JAXB
JAX-RS
Apache Camel
Tomcat
JBoss
GlassFish
Struts
GWT
Echo

Build tools

npm
Gradle
Maven
Make
Ant

Backend Development

Object-oriented programming
Test Driven Development
GRASP
SOLID

Web

HTML
CSS
XML
XSLT
XPath
JSON
AJAX
GraphQL
WebSockets
Angular
VueJS
JQuery
canJS
prototypejs

Databases

Postgres
MySQL
Oracle DB
MariaDB
MongoDB
DynamoDB
InfluxDB
Prometheus
Redis
Casandra
Neo4j
ClickHouse
ElasticSearch

Source Control

Amazon Web Services (AWS)

EC2
IAM
S3
EKS
MKS
KMS
ELB
Route 53
Lambda
DynamoDB
ElastiCache
LakeFormation
Aurora/RDS
Glue
Athena
SSM
SecretManager
etc

Messaging and other

Kafka
RabbitMQ
ActiveMQ
Kafka Streams
NATS/JetStream
Zookeeper
Consul

Containerization

Docker
Kubernetes

CI/CD

Jenkins
Bamboo
TeamCity

Etc

Grafana
Jira
Confluence
PlantUML
Cloudflare
GitHub
GitLab
Backstage
Bitbucket

English

Fluent

Russian

Native speaker

Ukrainian

Native speaker

German

Intermediate

Sports Fan

Football
American Football
Basketball

IoT

ESP32
Arduino
Electronics
Microcontrollers

Etc

Audiobooks
Movies & TV
Hiking