- Software Architect2016 - PRESENTMarket Logic
- Designed and implemented a large-scale distributed information retrieval system with scalable data mining and retrieval.
- Developed a scalable newsletter service.
- Designed and implemented a Spring Batch based application for scheduled execution of a big set of jobs.
Technologies: Java SE 8, Spring Boot, Spring Batch, Spring MVC REST, Elasticsearch - Senior Java Developer2017 - 2017William & Rahman, Ltd. (via Toptal)
- Created a prototype of an automated trading system.
- Introduced CI based on GitLab CI and Maven.
Technologies: Java SE 8, Interactive Brokers API - Senior Java Developer2016 - 2017Outcome Engenuity, LLC (via Toptal)
- Created a reusable diagram building tool.
- Implemented responsive UI with JavaFX.
- Introduced Maven build manager.
- Supported REST service calls on the client side.
Technologies: Java SE 8, JavaFX, JAX-RS, Maven - Senior Java Developer2013 - 2016T-Systems
- Created an application from scratch that brings together all public transportation companies of Switzerland into a single software platform for ticketing and customer service.
- Developed and supported an online contract management system for Deutsche Telekom.
- Migrated a few projects from EJB to Spring.
- Migrated plenty of services from RMI to SOAP (Spring WS and Apache CXF implementations).
- Created a universal object conversion framework.
Technologies: Java SE 7, Gradle/Maven, WebSphere/Weblogic, Hibernate, Spring, Apache CXF, JUnit, EasyMock - Senior Java Developer2014 - 2015Teamed.io
- Developed an application that charted and interacted with a general-purpose external USB data logger.
- Reported and fixed a lot of bugs within open source software products for the company.
Technologies: Java SE 8, JavaFX, Swing, JFreeChart - Visiting Researcher2012 - 2013Ilmenau University of Technology
- Designed and implemented a digital image segmentation algorithm.
- Developed a fuzzy classifier for immunological detection of bacteria in foodstuff.
- Implemented a desktop application to prepare test data to train the classifier.
Technologies: Java SE 7, Maven, Tomcat, Spring, JUnit - Senior Java Developer2010 - 2012T-Systems
- Developed an internal tool for skill and human resource management.
- Created a billing system for ships going through rivers and harbors of Germany.
- Created a Java language course for the students.
Technologies: Java SE 6, Maven, Tomcat, Hibernate, Spring, Apache CXF, JUnit, EasyMock - Java Developer2007 - 2010Exigen Services
- Developed and supported a J2EE module for processing and validating XML-formed orders.
- Created a tool for parsing a set of error messages with Apache POI from the Excel file.
- Improved the conversion between XML data structures with XSLT.
Technologies: Java SE 5, Ant, JBoss 4.2.1, JMS, JMX, XML/XSD/XSLT, JAXB/XMLBeans, JUnit, EasyMock
Alexey Saenko
Berlin, Germany
Member since January 24, 2016
Alexey has more than ten years of experience in research and development of a wide range of software from small and short-term projects to huge and complicated enterprise systems mostly specializing in server-side development. He really enjoys creating high-quality software, writing clean and clear code, and solving intellectual challenges.
Alexey is now available for hire
Portfolio
- Market LogicJava SE 8, Spring Boot, Spring Batch, Spring MVC REST, Elasticsearch
- William & Rahman, Ltd. (via Toptal)Java SE 8, Interactive Brokers API
- Outcome Engenuity, LLC (via Toptal)Java SE 8, JavaFX, JAX-RS, Maven
Experience
- Java, 11 years
- Spring, 8 years
- JAX-RS, 7 years
- Spring Batch, 3 years
Availability
Part-time
Preferred Environment
Eclipse, Git
The most amazing...
...tool I've designed and implemented detects bacteria in foods with more than 90% efficiency using mathematical image processing and fuzzy logic.
Employment
Experience
- Spring Batch Tutorial: Batch Processing Made Easy with Spring (Publication)Spring Batch is a lightweight, comprehensive framework designed to facilitate the development of robust batch applications. It’s easy to set up, and even easier to use. In this article, Toptal Freelance Software Engineer Alexey Saenko explains the programming model and the domain language of batch applications, using detailed code examples that should help any developer looking to get a head start in Spring Batch.
- Alexey is a mentor in the Toptal Global Mentor’s Program. This program is a partnership between Toptal and General Assembly to provide high quality mentorship for students from minority and low income backgrounds who are looking to begin their careers as professional software engineers. Alexey shows commitment to diversity in tech by mentoring a General Assembly student every week for a year, covering everything from coding tips and tricks to advice on making it in the industry.
Skills
- LanguagesJava, SQL, Hibernate Query Language (HQL), XSD, XML/XSLT, Core Java (J2EE), HTML, CSS, JavaScript, C++
- FrameworksHibernate, Spring, Spring MVC, Selenium, Apache CXF, JPA, Swing, Spring Boot, Spring Batch, XMLBeans, OAuth2, Swagger
- Libraries/APIsSpring REST, JAX-RS, JAX-WS, JMS, Java Servlets, JAXB, Apache Lucene, Interactive Brokers' API
- ToolsSubversion (SVN), GitHub, Maven, Git, Apache Tomcat, LaTeX, SoapUI, Java Concurrency, MATLAB, GitLab, Apache Ant, Gradle, Apache Solr
- ParadigmsObject-oriented Programming (OOP), Object-oriented Design (OOD), REST, Continuous Integration (CI)
- PlatformsJava EE, JSE, JavaFX, Docker, JBoss, Linux, Oracle, Kubernetes
- OtherEJB, SOAP, Mathematics, Fuzzy Logic, OAuth, Sparx Enterprise Architecture, NIO, SSL, Network Protocols
- StorageH2, PostgreSQL, MySQL, Elasticsearch, Cassandra, AWS S3, NoSQL, MongoDB
Education
- Master of Science degree in Mechatronics2008 - 2010University of Information Technologies, Mechanics, and Optics - St. Petersburg, Russia
- Bachelor of Science degree in Mechatronics2004 - 2008University of Information Technologies, Mechanics, and Optics - St. Petersburg, Russia
Certifications
- Oracle Certified Expert, Java EE 6 Web Services DeveloperJUNE 2012 - PRESENTOracle (ID SR5369041)
- Sun Certified Business Component Developer for the Java Platform, EE 5DECEMBER 2009 - PRESENTSun Microsystems (ID SR5369041)
- Sun Certified Programmer for the Java Platform, Standard Edition 6NOVEMBER 2008 - PRESENTSun Microsystems (ID SR5369041)
