Great architectural, programming and leadership experience
• Full stack knowledge with: AWS, Docker, Java, JavaScript, Linux/Shell, SQL/RDBMS,
noSQL etc
• Self-motivated, goal oriented, code pedantic, fast, skilled in management, domain oriented.
Oleksandr Chumachov
Architect / Lead / Developer
Skills
Architecture
- Microservices
- UML
- C4
- Streaming
- Messaging
- Pub/Sub
- Cloud
- Event Driven Architecture
- CAP
- SaaS
- PaaS
- CQRS
- Saga
- Sharding
- Replication
- Scaling
- Tracing
- OAuth
- OpenAPI
- AsyncAPI
- Cloud Computing
Programming Languages
- Java
- 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
- JQuery
- canJS
- prototypejs
Databases
- Postgres
- MySQL
- Oracle DB
- MariaDB
- MongoDB
- DynamoDB
- InfluxDB
- Prometheus
- Redis
- Casandra
- Neo4j
Source Control
- Git
- CVS
- SVN
Amazon Web Services (AWS)
- EC2
- IAM
- S3
- EKS
- MKS
- KMS
- ELB
- Route 53
- Lambda
- DynamoDB
- ElastiCache
- etc
Messaging and other
- Kafka
- RabbitMQ
- ActiveMQ
- Kafka Streams
- Zookeeper
Containerization
- Docker
- Kubernetes
CI/CD
- Jenkins
- Bamboo
- TeamCity
Etc
- Grafana
- Jira
- Confluence
Work Experience (10)
Feb 2023
- Current
Solutions Architect
Ukrainian Processing Center
Architectural solutions, Team management, Code review, Integrations with internal and 3rd party systems
Microservices
Kafka
AWS
Docker, K8N
Java, JavaScript/TypeScript, Python
PostgreSQL, DynamoDB, S3, Redis, Prometheus
gradle, maven
git
Apr 2021
- Jan 2023
Java Developer / Architect
Reach Financial
Architectural solutions, Development new functionality, Bug fixing, Code review, Integrations with 3rd party systems
Microservices
Kafka
AWS: EKS, EC2, KMS, MKS, S3, etc
Java: Spring, Hibernate, JPA etc
Gradle
MySQL, Redis, Prometheus
Docker, K8N
git
Aug 2016
- Apr 2021
Architect / Software Developer
Lexalytics, Inc. an InMoment Company
Architectural solutions, Total re-design and then implement of the system with splitting monolith to microservices, Develop administrative web portals
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
Apr 2012
- Aug 2016
Dev Lead / Software Engineer / Tech Lead
Omnigon Communications LLC
Architecture solutions, Task planning, Development, Code review, DevOps support, Meeting with clients and involving in functional decisions
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
Dec 2011
- Apr 2012
Java (LifeRay) Developer
Krusche & Company
Features development, Bug fixing
Java (spring, hibernate)
Liferay
Javascript
Ant
Jan 2010
- Dec 2011
Team lead / Architect / Manager / Java Developer
Sintez Technologies
Features planning and development, Sprint planning, Task management, Documentation writing, Communications with project owners
Java (EE, EJB, Servlet, GWT, Vaadin)
GlassFish
Flash/Flex
Postresql
Maven
linux, shell
svn, git
Nov 2008
- Dec 2010
Java Developer / Software Architect / Team Lead
GeeksForLess
Task management, team leading (code review, helping with studies etc), Architecture solutions, Feature development & bug fixing
Java (Spring, EE, GWT, Echo, Jsp, Servlets, Hibernate)
Maven
linux, shell
MySQL, Oracle
SVN, GIT, Jira, Maven, Ant
Jun 2008
- Nov 2008
Java Developer
TemplateMonster.com
Development java application sites.
Java (EE, EJB, JPA, GWT, Struts, JSP, Servlets)
MySQL
SVN, CVS
linux
JBoss
ant
Jun 2007
- Jun 2008
Interface programmer's Department Manager
TemplateMonster.com
Mostly supervising. From time-to-time development on PHP and Java EE, Html, CSS
Nov 2006
- Jun 2007
Interface programmer
TemplateMonster.com
Front end development with small part of PHP and Java EE
HTML, CSS
JavaScript
PHP
Java (EE, EJB, JPA, GWT, Struts, JSP, Servlets)
Projects (5)
T.com
TemplateMonster
Audubon
Semantria
PGATour.com
Education (1)
2001
- 2007
Information systems and technologies
National University of Shipbuilding
Certificates
M101J: MongoDB for Java Developers
10gen
Languages
English
Fluent
Russian
Native speaker
Ukrainian
Native speaker
German
Beginner
Interests
Sports Fan
- Football
- American Football
- Basketball
IoT
- ESP32
- Arduino
- Electronics
- Microcontrollers
Etc
- Audiobooks
- Movies & TV
- Hiking