Java Architect & Java Developer

Kandidát je zkušený odborník s rozsáhlými zkušenostmi v oblasti vývoje softwaru a technické architektury. Sídlí na Slovensku, má prokazatelné zkušenosti jako vývojář softwaru na volné noze a podílel se na projektech pro renomované společnosti, jako je Accenture. Vyniká ve vedení týmů, upřesňování uživatelských příběhů, rozhodování o návrhu a mentorování mladších vývojářů. Jeho odborné znalosti zahrnují celou řadu technologií, včetně Java, Spring, Hibernate, Python, Docker, AWS a dalších.

Freelance software developer

(November 2022 – Present)

• Current account webpage
• Bugfixing
• Implementing features
• Writing test (unit, integration, browser automation)
• Database modeling
• Technology: Java, Spring, Hibernate, Oracle, Hibernate, Rational Software Architect, Wicket, Xpath

Freelance software developer

(March 2022 – Oct. 2022)

• Kitchen planning application
• Fixing bugs and unit testing
• Taking part in design and architectural decisions
• Mentoring junior developers
• Developing features
• Presenting results in front of the client (in German)
• Technology: Java, Mapstruct, SpringBoot, cxf, PostgreSQL, Hibernate, JasperReports, Feign, Docker

Tech. Architecture Specialist

(Sept. 2019 – Febr. 2022)

• Integration project for a banking client
  • Leading a team of developers
  • Refining user stories with product owners
  • Taking part in design and architectural decisions
  • Mentoring junior developers, coordinating work
  • Developing features
  • Deploying to cloud (AWS)
  • Presenting results in front of the client (in German)
  • Technology: DDD, Java17, Mapstruct, SpringBoot, Kubernetes, Linux, Postgres, OpenApi, AsyncAPI, Kafka, Ports and Adapters architecture, AVRO, AWS EKS, Helm, arc42,

Video analytics service platform

- Refactoring, performance optimization

• Implementing REST and GraphQL endpoints
• Implementing tracing
• Mentoring junior developers, coordinating work
• Deploying to cloud (AWS)
• Containerization, deployments
• Technology: Python, OpenCV, Pytorch, Tensorflow, Docker, Kafka, GraphQL, MongoDB, redis, zipkin, Socket.IO, FastAPI, uvicorn, Azure devops, AWS EKS, AWS EC2, AWS S3

Microservice solution for public service domain

• Taking care of the handover phase
• Writing user stories and documentation
• Designing and implementing features
• Implementing performance and security tests
• Presenting results to the client (German) Technology: Java, Spring, Kafka, Docker, Docker Swarm, GitLab, Swagger, Oracle, KeyCloak, Splunk, JMeter, OwaspZAP

Java Programmer

(Oct. 2017 – Sept. 2019)

Attendance management and accounting system

- Bugfixing and unit testing

• Implementing new features according to specification
• Technology: Java, SVN, Struts, MySQL, PostgreSQL

System for financial predictions and calculations

- Bugfixing, unit testing and refactoring

• Implementing schema validation
• Code reviews and code quality
• Technology: Java, JUnit, REST, Spring, Kafka, CXF, Struts, Git

Time and attendance management system

- Webservice implementation

• Implementing authentication, authorization and auditing
• Unit and integration tests, code reviews and code quality
• Technology: Java, REST, JUnit, Spring, Spring Boot, MySQL, Flyway, JWT, Gitlab

Electronic identification system (testing and refactoring)

- Unit testing and integration testing

• Building a framework for integration testing
• Code quality improvements and code reviews
• Technology: Java, Spring, JUnit, Mockito, PowerMock, WireMock, Checkstyle, H2, Git, Jenkins

Java Programmer

(Dec. 2015 – Sept. 2017)

REST webservice for searching in patent databases

• webservice design and development
• integration with existing services
• unit and component testing
• setup of build jobs
• design and implementation of query syntax
• implementation of a query translation tool between existing syntaxes
• Technology: Java, RESTEasy, ANTLR, XSD, XSLT, JAXB, Solr Lucene, Swagger, Tomcat, JBoss, Bamboo, ElasticSearch, Kibana

Password reset service

• webservice design and development
• integration with existing authentication solutionTechnology: Java, Spring Boot, Swagger, Tomcat, Bamboo

Java Programmer

(June 2015 – November 2015)

Fast document store, maintenance phase

- bug fixing

• writing unit tests
• setup and configuration of project tools (Jira, Jenkins, Confluence...)
• minor bugfixes on frontend
• Jira administration
• Technology: Java, SOAP and REST, MS SQL, PostgreSQL, Jira, JSF, WebSphere, Linux, Checkstyle, Git

Java Programmer

(Dec. 2013 – May 2015)

SOAP webservice for fingerprint image processing

- webservice implementation

• improving test suite throughput by batch processing
• end-to-end testing, load testing
• performance tuning (implemented batch processing)
• Technology: Java, SOAP, Hibernate, JPOX, Spring AOP, Spring Integration, Spring Data JPA, MySQL, Apache Axis, Apache CXF, Tomcat, Linux, Bash, RabbitMQ, Grinder, JUnit, Powermock, Eclipse, FindBugs, Ant, Maven, SVNGraph database project for a logistics company, maintenance phase
• automation of testing and reporting
• implementing a tool for parsing application logs and generating
• EmailsTechnology: Java, JavaFX, JDBC, SQL, Windows batch files

MySQL programmer (part time)

(November 2013 – February 2014)

• writing SQL scripts and embedding them into the Grün VEWA software
• designing UI components and print layout
• writing feature documentationTechnology: MySQL, CAVO, SVN

Education

Bratislava, University of Technology

(Sept. 2009 – May 2014)

• Master’s degree in Applied informatics
• Bachelor’s degree in Applied informatics
• Coursework: Computer Architecture, Algorithms, Artificial Intelligence, Cryptography, Computational theory, Operating Systems, Databases, Computer Networks, Application and Infrastructure Security