Alexander

Alexander Kuziv
JAVA SOFTWARE ENGINEER
I am 42 years old
I have a child
gender: male
nationality: ukrainian
experience: more than 17 years

Contact information
Mob: [open contact info](look above in the "contact info" section) (WhatsApp for video call or messages), [open contact info](look above in the "contact info" section)
E-mail: [open contact info](look above in the "contact info" section)
Teams: makklays

Сode snippets - Repositories
https://github.com/makklays/secure-credit-hub — microservices from scratch
https://github.com/makklays/java-in-docker https://github.com/makklays/javafx_jdbc
https://github.com/makklays/java-spring-boot-jpa https://github.com/makklays/java-libgdx-game
https://github.com/makklays/java-arquitectura-hexagonal-kafka
https://github.com/makklays/kotlin-clean-user-service — Kotlin
[open contact info](look above in the "contact info" section) https://github.com/makklays/java-flowable-workflow

Job title: JAVA SOFTWARE ENGINEER
Position type: full time

Skills:
JAVA 17, Kotlin, Java Core, Spring Framework, Spring, Spring Boot, Spring Data, Spring Web,
Spring Security, Spring Reactive, JWT, JavaFX, Hibernate, JDBC, JPA, Maven, Flyway, Servlets,
Thymeleaf, React, H2, PostgreSQL, MySQL, REST APIs, SOAP XML, gRPC Protobuf, Kafka,
RabbitMQ, LDAP, DL4J, Logback, slf4j, Tests, JUnit, Mocks, SonarQube, GitHub Action
(CI/CD), Kubernetes, etc.

PHP, MySQL, MariaDB, MongoDB, Doctrine 2, Eloquent, HTML(XHTML), Bootstrap, CSS,
Saas, jQuery, Ajax, Twig, Blade, Smarty, LDAP, GoogleMap API, Apache, Nginx, Docker, npm.
Yii, ZendFramework, Symfony2, Yii2, Laravel, React, Vue.js.
OOP, SOLID, MVC, DRY.
Git, SVN, Bitbucket.
Jira, Mantis, Redmine, Trello, Slack.

ASP.NET MVC 5, C# 7.0, OOP, generics, LINQ, multithreading, XAML, collections, Entity
Framework 6, UWP, .NET.

Experience:

Java Software Engineer | Software Architect, LAWA LLC. (October 2022 — March 2026
— 3 years 5 months)
España, Santa Cruz de Tenerife, https://lawa.es
Project development for Java 17, Kotlin, microservices, Spring Framework, Spring Boot, Spring,
Data, Spring Web, Spring Reactive, Spring Security, JWT, Hibernate, JDBC, JPA, Maven, Flyway,
Themeleaf, JavaFX, MySQL, PostgreSQL, LDAP, DL4J, REST API, SOAP, gRPC Protobuf,
RabbitMQ, Logback, slf4j, Tests, JUnit, Mocks, GitHub Action (CI/CD), etc.

- Over 17 years of experience in web development, specializing in Backend and Full-Stack roles.
- Expertise in building REST APIs and microservices, as well as maintaining monolithic
applications.
- Proficient with SOAP, JSON, Protobuf, gRPC, Kafka, and RabbitMQ.
- Proven track record of implementing Event-Driven Architecture (EDA) in both monolithic and
microservices environments.
- Extensive Full-Stack experience using Java (Spring Boot) and React.
- Deep knowledge of API documentation using Swagger and OpenAPI.

- I have experience developing microservices architectures from scratch, applying key patterns such
as CQRS, Saga, Circuit Breaker, API Gateway, and Event-Driven Architecture, and following
Domain-Driven Design (DDD) principles. I am also familiar with Kotlin and have implemented a
small microservice using it.

- Mentored a team of developers and established best practices for clean code and architecture.
- Led technical decision-making regarding the choice of frameworks and infrastructure (e.g.,
transition to Spring Reactive or gRPC).
- Participated in the hiring process and conducted technical interviews.

- I have worked with Spring Boot, Spring Security, Spring Reactive, Spring Web, and have
some experience with JavaFX.
- I have applied design patterns and followed SOLID principles in my projects.
- I have written unit and integration tests using JUnit and Mockito, and used SonarQube to ensure
code quality and maintain clean architecture standards.
- I have experience with Docker and Docker Compose for containerization.
- I have worked with relational databases (MySQL, PostgreSQL) and LDAP integration, and used
Flyway for database migrations.
- As a Full-Stack developer, I built monolithic web applications from scratch using Spring Boot
and Thymeleaf, React with Bootstrap and JavaScript (jQuery, Vue.js) on the frontend.
- I have experience in the Fintech and banking sectors and developed internal company projects.
- I have worked with DL4J (Deep Learning for Java) and neural networks.
- I have experience developing a mobile application using Android Studio.

- In addition to my core stack, I am proficient in Python, capable of developing high-performance
services with FastAPI, and currently exploring TensorFlow for machine learning applications.

- I work in Agile (Scrum) environments, participating in sprint planning, daily stand-ups, and
retrospectives.
- I use Git and GitHub for version control, and have worked with Jira and Confluence for task
management and documentation.
- I have experience with CI/CD pipelines and deploying applications using Github Action,
Kubernetes.

Java Developer Full Stack, TechMatrix18 Ltd. (October 2020 - October 2022 — 2 years)
Ukraine, Kiev, https://techmatrix18.com
I had developed on Java 17, Spring Boot, Jpa, Hibernate, JWT, Thymeleaf, React, Flyway, Kafka,
RabbitMQ, REST API, JUnit, Mocks, Git, Agile/SCRUM.
I developed a monolithic web application from scratch using Spring Boot and Spring Security, and
maintained existing microservices.
I worked with Bitbucket, Jira, and Confluence.
I have developed and used IntelliJ IDEA, Linux (Ubuntu), Docker, REST APIs, React, Vue.js,
jQuery, MySQL, GitHub, Bootstrap, CSS3, and HTML5.
I developed applications in Java using Thymeleaf and React.
- As a Full-Stack Developer, I delivered end-to-end solutions by designing robust REST APIs and
building responsive, high-performance frontends using React, Vue.js, and Sass.
- I worked with Stripe API for e-commerce payment integration.
- I implemented and validated different web forms using REST APIs.
- I designed database architecture with multiple tables and relationships, and created database
migrations using Flyway.
- Mentored a team of developers and established best practices for clean code and architecture.
- I configured Maven dependencies.
- I worked on Linux (Ubuntu) and optimized SQL queries.
- I used Git for version control.
- I have experience with CI/CD pipelines and deploying applications using Kubernetes.

Developer PHP FullStack, Dreamscape networks LLC (October 2019 - October 2020—1 year)
Ukraine, Kiev, https://dreamscapenetworks.com
I worked in an international company with offices in Singapore, Hong Kong, Philippines, Kyiv,
etc. As a PHP Developer, I worked on several projects and used PHP 7.4, OOP, HTML5, CSS3,
JavaScript, jQuery, Lumen, Symfony, Git, and SVN.

- I supported projects with hightload.
Next projects:
https://crazydomain.com https://vodien.com https://sitebeat.com https://newsletter.com

- I developed Google Analytics solutions for the company’s websites.
- I created web forms using HTML and CSS.
- I used PHP and OOP, creating classes and interfaces for websites.
- I worked with Symfony and Lumen frameworks.
- I integrated PayPal API for e-commerce payment processing.

Programmer PHP, Star Way Media LLC (March 2019 — September 2019 — 6 months)
Ukraine, Kiev
The company from the sector finance.

I developed 4 sites web on Laravel https://gerchikco.com and etc.
- I created CRUD functionality for entities in the admin panels of websites.
- I developed and validated various web forms, creating custom Request classes.
- I implemented website layouts using Bootstrap and Sass, and managed frontend dependencies
with npm.
- I installed and configured Elasticsearch on the web server and for websites from scratch.
- I developed two service websites with RESTful APIs (GET, POST, PATCH, PUT) returning
JSON.
- I used Git and GitLab for version control.
PHP Developer, Firebit, Ltd. (March 2018 - March 2019 — 1 year)
Ukraine, Kiev, https://firebit.com.ua
I had developed nexts sites web complex on Yii2: https://montreal.ua, https://kvartal-aley.com,
https://madison-gardens.com, https://illinsky.com.
- I developed on Yii2.
- I developed features including object visualization, news sections, and personal user accounts
with payment calendars and payment functionality. I also integrated the system with 1C to
synchronize user data.

- I worked with the Google Maps API and implemented route planning functionality.
- I developed order form submission functionality using Bitrix24 and improved the website design.
- I supported, modificated and developed on Bitrix next sites: kronapark.ua, l-kvartal.com.ua,
zeleniykvartal.com.ua, as well as partial development https://gullivercenter.com (in the
administration part of Yii2 - reserving seats in restaurants, etc.), anbud.ua (html editorial site),
https://mercato.ua (wordpress).
- At my work, I used: PHP 5.6-7.2, MySQL, xHTML, CSS
- I used Yii2, API of GoogleMap, Share FB, 1C-Manager.

PHP Developer, Smartlink Consalting, Ltd. (VSEI Ukraine) (September 2017 - December
2017 - 4 months)
Ukraine, Kiev, bestbid.com.ua https://vsenergy.com.ua/
Developed and maintained the website bestbid.com.ua It is one of platforms for carry out public
procurement in the system ProZorro.
- Studied and worked with ProZorro API (v. 2.3, 2.4, api / dev).
- Improved and corrected the functionality of the accounts of the users.
- Developed new type of hiring procedure - Contracting of energy services.
- Developed the integration (loading) of tenders, lots, tenders, etc.
- Used PHP, POO. Created HTML-pages web.
- Optimizated the queries of SQL for search at web site.

PHP Developer, Unitrade Group, Ltd. (June 2017 - September 2017 - 4 months)
Ukraine, Kiev, http://www.unitrade-group.com
The company have from 250 to 500 employes from the sector Retail.
- Developed and supported the web site for sale mobiles (iPhones).
- Modificated the modules of shop-online and supported the projects.
- Improved and laid out the design for web site, HTML and css, for the version mobile of web site.
- Integrated (upload and download) of the list of products of/to online shop.
- Created the feed for web site hotline.ua
- Worked on Yii2.

At my work, I used: PHP 5.6, MySQL, CSS.

PHP Developer, Art Mango Production, Ltd. (June 2015 - October 2016 - 1 year 5 months)
Ukraine, Kiev, http://artmangoproduction.com/
The company have from 50 to 100 employes from IT - development of software.

Refinement of new sections of site sayamatravel.com (Front-end and Back-end, javascript,
MySQL)
- Created the web site sayamaluxury.com and sayamamice.com (Front-end and Back-end,
javascript, MySQL, triggers and stored procedures).
- At my work, I used: Git, Putty, MySQL (activation and stored procedures),
Completion of the functional site in Yii2.
- Worked on Sphinx, MailChimp API, GoogleMap API, Share FB and VK.
- Worked on Yii2 framework and simple PHP (POO).
- Worked on Linux (Ubuntu).

- Used the system of control of versions GIT.
- Used the system of managment of tasks: Redmine.

PHP Developer, Technomatix, Ltd. (January 2011 - May 2015 - 4 yaers 5 months)
Ukraine, Kiev, http://tmx-learning.com, https://tmx.com.ua
The company from the sector Learning LMS.

The creation of the system for distance learning of staff (the portals for training, evaluation -
Evaluation 360 and staff testing) based in Moodle for use internal in the companies. Worked with
next banks, for example: Credit Agricole Bank, Pump Bank, etc.

- Created and developed new modules of the system.
- Developed the system of staff training for the banks famouses and other large grades.

- Integrated LDAP with bank systems and website databases.
- Worked with Moodle.
- Developed applications using PHP 5 / 5.3 with OOP, JavaScript, and jQuery.
- Worked with Doctrine 2.0, ORM, and MVC architecture.
- Developed projects using Yii Framework, including creating entities, modules, business logic,
and custom widgets.
- Used Git for version control.
- Used Jira and Mantis for task management.

Middle PHP Developer, Universal Information of Technology, Ltd. (May 2010 - October 2010
- 6 months)
Ukraine, Kiev, http://unit.com.ua/en/
The company from the sector finance.

Created the part of administration of the project http://plategka.com
- Worked on PHP (POO), Smarty, JavaScript.
- Created and developed CRUD for differents entities of the admin.
- Developed send the emails from web site.

- Used SVN.

Middle PHP Developer, Information of system 1559, Ltd. (October 2009 — April 2010 - 7
months)
Ukraine, Kiev, http://tut.ua/
Developed new services and supported the web portal https://tut.ua on ZendFramework +
PostgreSQL.
- Worked on Zend.
- Wrote new modules PHP + AJAX on the web site.
- Worked and read the code from someone else, refinement.
- Optimizated the requests slow of SQL. Worked with the libraries Extjs (Sencha).
- Wrote the part of administration of the project tut.ua and https://bud-inform.com.ua used ExtJS
and JQuery.
- Used SVN and TortoiseSVN.

The list of the web sites in which I participated: https://tut.ua, https://bud-inform.com.ua.

PHP Developer, ITC Publishing, Ltd. (June 2009 - September 2009 - 4 months)
Ukraine, Kiev, http://itc.ua/tag/itc-publishing/
The company in the Media sector.

Supported and worked at the projects on Drupal.
Wrote new modules PHP + AJAX for web sites.
- Worked and read the code of web sites.
- Worked with jQuery.
- Created differents HTML-pages with CSS.
- Optimizated the requests of SQL.
- Worked on PHP, XHTML, CSS + DRUPAL.

The list of the web sites in which I participated: https://itc.ua, https://ko-online.com.ua,
https://dpk.com.ua

PHP Developer, Point Com, Ltd. (August 2008 - Jule 2009 - 1 year 2 months)
Ukraine, Kiev, http://pointcom.ua
- Developed new services for web sites and supported the projects finished.
- Worked and read the code of the web sites.
- Supported web sites existed.
- Wrote the requests of SQL.
- Optimizated the requests of SQL.
- Worked on PHP (OOP), created the clases and the interfaces with OOP, Mysql, used JavaScript,
learned and used jQuery.
- Created XHTML-pages web for wap web sites (for mobile phones).
- Filled contents the web sites for mobile phones.
The list of the web sites in which I participated: https://wap.kievstar.ua, https://wap.mts.ua, etc.

Junior PHP Developer, BNK-studio, Ltd. (September 2007 - Jule 2008 - 1 year 1 month)
Ukraine, Kiev, http://bnk-studio.com
Created several online shops from «zero».

- Created the web sites use PHP, MySQL, temlates Smarty, DHTML, HTML, CSS.
- Wrote the requests of SQL.
- Wrote the scripts javascript for web site.
- Wrote and worked with my own templates Smarty
- Worked and read the code of other person, corrected, revised, processed, "adjusted" to new
projects.
- Worked with CSS.
- Adjusted the files of php on CRON.
- Created account and showed the web site,
- Created and developed the projects independently from «zero».
- Used and worked with: PHP, MySQL, AJAX (xmlHttpRequest), Smarty, HTML, CSS
The list of web sites in which I participated: https://vitalpharma.com.ua, https://delotehniki.com.ua,
https://stobud.com.ua, https://kinderclub.com.ua, https://nontv.com.ua
.NET Developer (ASP.NET, C#), Intelligent Systems GEO, Ltd. (September 2002 - September
2003 - 1 year)
Ukraine, Kiev, http://www.isgeo.kiev.ua/
Developed and supported the web sites on ASP.NET with MS SQL.
Wrote and read ASP.NET codes.
Created differents HTML pages.
Used: ASP.NET, MSSQL, IIS, HTML, DHTML, CSS

Education:
The National Kyiv Polytechnic University, Ukraine (site official)
The Faculty of Physics and Mathematics (2000 — 2006)

Languages:
B2-C1 Español (Spanish)
B2 Upper-Intermediate English
C2 fluent native Ukrainian
C2 fluent native Russian