Alex Shesterov - Senior-Softwareentwickler

Q: Where is Alex based?

Alex is based in Soldeu, Andorra and can operate in on-site , hybrid , and remote work models.

Q: What languages does Alex speak?

Alex speaks the following languages: Russian (Native), Ukrainian (Native), German (Advanced), English (Advanced), Spanish (Intermediate) .

Q: How many years of experience does Alex have?

Alex has at least 20 years of experience. During this time, Alex has worked and for 13 different companies . The average length of individual experience is 1 year and 5 months . Note that Alex may not have shared all experience and actually has more experience.

Q: What companies has Alex worked for in recent years?

In recent years, Alex has worked for Ionity and REWE Systems .

Q: Which industries is Alex most experienced in?

Alex is most experienced in industries like Information Technology (IT) , Retail , and Fashion and Apparel . Alex also has some experience in Utility Services , Healthcare , and Professional Services .

Q: Which business areas is Alex most experienced in?

Alex is most experienced in business areas like Information Technology (IT) , Product Development , and Marketing . Alex also has some experience in Operations , Accounting , and Quality Assurance (QA) .

Q: Which industries has Alex worked in recently?

Alex has recently worked in industries like Utility Services , Information Technology (IT) , and Retail .

Q: Which business areas has Alex worked in recently?

Alex has recently worked in business areas like Information Technology (IT) , Operations , and Product Development .

Q: What is Alex's education?

Alex holds a Master in Computer Science from University of Münster and a Bachelor in Computer Science from Oles Honchar National University Dnipro .

Recommended expert

Soldeu, Andorra

Experience

Jan 2022 - Present

4 years 3 months

Ionity

Design, development and operation of charging and payment software
Implementing the interaction between NFC terminals and EV chargers
Generating and providing invoices in the invoice portal
Technologies: Kotlin, Java, Spring Boot, PostgreSQL, Terraform, Kubernetes, Helm, SonarQube, GitLab

Nov 2018 - Oct 2019

1 year

Cosi Consulting LLC

Integrating COSI Insight software with OpenText Content Server
Designing and implementing integration between DocuSign, OpenText and COSI Insight
Technologies: OpenText, Java, Spring, TomEE, Maven, Mercurial, TestRail, JIRA

Oct 2018 - Dec 2021

3 years 3 months

REWE Systems

Developing accounting software including functional concepts and process modeling
Redesigning and implementing the database
Release management, quality assurance and audit compliance
Technologies: Java, Spring, Spring Boot, Spring Batch, TypeScript, Angular, IBM Host, IBM DB2, Kubernetes, Helm, GitLab, JIRA, SpiraTest, SonarQube, DbUnit, PMD, Git

Aug 2018 - Sep 2018

2 months

b-tix GmbH

Creating a proof of concept in the insurance sector
Technologies: Serverless architecture, Java, AWS, XSLT, Excel

Jul 2018 - Aug 2018

2 months

NDA

Optimizing database design and migrating data
Technologies: Java, PostgreSQL, Excel

Aug 2017 - Aug 2018

1 year 1 month

REWE Digital

Integration of external systems in the fulfillment area and definition of interfaces
Design, development and maintenance of microservices
Collaboration on implementing GDPR guidelines
Technologies: Java, Java EE, JavaScript, REST via JAX-RS, JPA, PostgreSQL, Hibernate, Spring Boot, Spring Framework, Kafka, Docker, Maven, Jenkins, Git, OAuth2, Kibana, Prometheus

Dec 2014 - Jul 2017

2 years 8 months

Cosi Consulting LLC

Pre-sales: preparation and delivery of demos and POCs
Implementation: requirements analysis, installations and configuration on client sites
Coordination of customer projects with the development team
Configuration of FileNet and Documentum (security, D2, workflows, lifecycles, autolinking, forms)
Setup of single sign-on with Kerberos/SPNEGO
Development: Team lead (4 people), integration of COSI Insight software with IBM FileNet and OpenText Documentum, custom ECM model extensions (Documentum TBOs, FileNet custom event handlers)
Technologies: Java, JavaEE, WebSphere, WebLogic, TomEE, Spring, C#, AWS, Documentum, IBM FileNet, CMIS, SOAP, JavaScript, Ext JS, OAuth2, Microsoft Office 365 API, Microsoft OWA, TeamCity, Maven, Mercurial

Jun 2014 - Sep 2014

4 months

QR-Verity

Independent creation of the MVP for assigning barcodes to products
Bulk uploads, reading barcodes and validity checks
Product and market search
Technologies: QR codes, GTIN codes, Signal Processing, PHP, JavaScript, Memcached, MySQL, HTML5, XML, JSON, CSV

Aug 2013 - Dec 2014

1 year 5 months

Smartling.com

Java development and team lead (3 people)
Splitting a monolith into microservices and implementing continuous delivery
Architecture and implementation of software modules
Reorganizing source code to optimize and improve maintainability
Coaching the team in adopting TDD
Technology selection and public presentations
Technologies: AWS, Java, Spring, Hibernate, Microservices, SaaS, Docker, Maven, Bamboo, MySQL, ANTLR4, Tomcat, HTML5, JavaScript, Git, SVN

Oct 2009 - Nov 2014

5 years 2 months

Vario Fashion

Implementation of product synchronization between the webshop and e-commerce platforms (eBay, Rakuten, Allyouneed, Fyndiq, smartvie.de, markt.de, preis.de, etc.)
Inventory synchronization with manufacturers
SEO optimizations
Technologies: Java, Redis, MySQL, PHP, Prestashop, Gambio, JavaScript, jQuery, HTML, XML, GoodRelations

May 2008 - Apr 2013

5 years

COR&FJA AG

Permanent position: Java, C++, Perl development and data modeling
Design and implementation of software modules
Reengineering of legacy modules and release management
Database migrations
Support customers with software deployments
Technologies: Java, Xtend, C, C++, Perl, DB2, Maven, Jenkins, XML, XSLT, XSD, SVN

Aug 2006 - Jul 2007

1 year

zeb/rolfes.shierenbeck.associates

Junior software developer (part-time): Reengineering and porting of legacy modules
Technologies: C, C++, Java

Aug 2006 - Mar 2007

8 months

WWU

Design, implementation and administration of the student database for the language center at WWU Münster (part-time)
Technologies: FileMaker Pro, Java, HTML

Jul 2005 - Oct 2007

2 years 4 months

SFB MoBil, WWU

Implementation of molecular cardiovascular imaging in the MoBil collaborative research center at WWU Münster and Siemens
Implementation of complex mathematical algorithms in Matlab and C (Optical Flow, 3D reconstruction from PET scanner data)
Optimization for real-time processing and 3D visualization of patient data
Design of the patient database
Technologies: Matlab, Java, C, C++, OpenGL, MySQL

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (12 years), Retail (9.5 years), Fashion (5 years), Utilities (4 years), Healthcare (2.5 years), and Professional Services (1 year).

Information Technology

Retail

Fashion

Utilities

Healthcare

Professional Services

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (19 years), Product Development (15.5 years), Marketing (5 years), Operations (4 years), Accounting (3 years), and Quality Assurance (3 years).

Information Technology

Product Development

Marketing

Operations

Accounting

Quality Assurance

Skills

Roles / Experience

Software Architecture
Software Development
Test Automation
It Consulting
Pre-sales
Leading Customer Projects (Requirements Analysis, Implementation)
Customer Training
Release Management
Leading Small Teams (Up To 5 People)
Coaching/mentoring
Database Design
Migrations
Experience With Agile
Industry Expertise: E-mobility, Retail, E-commerce, Accounting, Banking, Insurance

Expertise / Technologies

Backend: Kotlin, Ktor, Java (Up To 22), Php (Up To 7.2), Spring, Spring Boot, Spring Batch, Hibernate, Axis2, Jdbc, Liquibase, Flyway, Apache Poi, Bouncy Castle, Guava
Frontend: Vue.js, Angular, Javascript, Typescript, Html, Css
Other Programming Languages: C++, C, Perl, Matlab, X86 Assembly, Lisp, Bash, Prolog
Virtualization/cloud: Terraform, Kubernetes, Helm, Docker, Aws (Lambda, Api Gateway, S3, Cloudwatch, Cloudfront, Iam, Cognito, Cloudformation)
Databases: Postgresql, Mysql, Mariadb, Ibm Db2, Mongodb, Dynamodb, Redis, Memcached, Ibm Filenet, Opentext Cs, Opentext Documentum, Cmis
Web: Http, Rest, Webservices/soap, Cdns, Semantic Web, Schema.org, Goodrelations, Microformats
Build/vcs/ci/cd: Gitlab, Jenkins, Bamboo, Teamcity, Bitbucket Pipelines, Travis Ci, Gradle, Maven, Git, Nexus, Artifactory
Streaming/messaging: Kafka, Rabbitmq, Jms
Architecture: Hex, Reactive, Domain-driven Design, Microservices, Serverless
Qa: Loadrunner, Spiratest, Testrail, Junit (Up To 5), Spock, Dbunit, Archunit, Mockito, Mockk, Powermock, Sonarqube, Jacoco
Security: Oauth2, Hashing, Encryption (Symmetric And Asymmetric), Various Attacks And Countermeasures, Owasp
Logs/metrics: Slf4j, Logback, Log4j, Logstash, Kibana, Prometheus
Other: Antlr4, Compression Algorithms, File Formats (Esp. Office And Image Formats), Pattern Recognition/ocr, Neural Networks

Languages

Russian

Native

Ukrainian

Native

German

Advanced

English

Advanced

Spanish

Intermediate

Education

Oct 2003 - Jun 2008

University of Münster

M.Sc. in Computer Science, minor in Mathematics · Computer Science · Münster, Germany · very good (1.5)

Oct 1999 - Jun 2001

Oles Honchar National University Dnipro

B.Sc. in Computer Science, minor in Business Administration · Computer Science · Dnipro, Ukraine · very good

Profile

Created

December 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Alex based?

Alex is based in Soldeu, Andorra and can operate in on-site, hybrid, and remote work models.

What languages does Alex speak?

Alex speaks the following languages: Russian (Native), Ukrainian (Native), German (Advanced), English (Advanced), Spanish (Intermediate).

How many years of experience does Alex have?

Alex has at least 20 years of experience. During this time, Alex has worked and for 13 different companies. The average length of individual experience is 1 year and 5 months. Note that Alex may not have shared all experience and actually has more experience.

What companies has Alex worked for in recent years?

In recent years, Alex has worked for Ionity and REWE Systems.

Which industries is Alex most experienced in?

Alex is most experienced in industries like Information Technology (IT), Retail, and Fashion and Apparel. Alex also has some experience in Utility Services, Healthcare, and Professional Services.

Which business areas is Alex most experienced in?

Alex is most experienced in business areas like Information Technology (IT), Product Development, and Marketing. Alex also has some experience in Operations, Accounting, and Quality Assurance (QA).

Which industries has Alex worked in recently?

Alex has recently worked in industries like Utility Services, Information Technology (IT), and Retail.

Which business areas has Alex worked in recently?

Alex has recently worked in business areas like Information Technology (IT), Operations, and Product Development.

What is Alex's education?

Alex holds a Master in Computer Science from University of Münster and a Bachelor in Computer Science from Oles Honchar National University Dnipro.

What is the availability of Alex?

The availability of Alex needs to be confirmed.

What is the rate of Alex?

Alex's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.