Vadim D.
Senior Java Developer
Experience
Jun 2025 - Nov 2025
6 monthsSenior Java Developer
EPAM
- A large price-intelligence project.
- Designed Angular-based UI dashboards filter for monitoring product data with steward module, backend+front end.
- Implemented OAuth2 flows for Google and Microsoft logins.
- Integrated HashiCorp Vault for secrets management; added user login notifications for new IP addresses.
- Introduced Liquibase and Postgres for storing and analyzing historical data.
- Introduced test-containers.
- Developed and maintained Java applications, bugfixing, participating in daily scrum meetings.
- Tools: IntelliJ-Idea, Maven, IoC/DI, Java 11-17, Python, JDBC/Hibernate/JPA/Data, SpringBoot, Kafka, REST, Git, Gitlab, ElasticSearch, Angular.
Oct 2023 - Jun 2024
9 monthsSenior Java/React Developer
Luxoft USA
- A large project whose purpose was to facilitate trading in financial markets.
- Designed and implemented a custom module for securities trading types using Spring Integration, EMS, and IBM MQ; optimized performance with caching connection factory.
- Ensured concurrent trade processing using @Async and thread pools; leveraged RxJava and Spring WebFlux.
- Deployed trading solutions on AWS EC2, managed networking with Route53, and configured security policies and firewall rules.
- Worked intensively with SQL; integrated ElasticSearch with custom components for full-text indexing and near-real-time search; implemented Redis.
- Built integration and performance testing pipelines; profiled runtime applications.
- Created a robust message queue data structure for high-frequency trading.
- Integrated AI-driven trade analysis via Python scripts calling qwen 8bln, llama 8 bln and ChatGpt APIs.
- Developed and maintained Java applications, bugfixing, participating in daily scrum meetings.
- Tools: IntelliJ-Idea, Gradle, IoC/DI, Java 8, Python, JDBC/Hibernate/JPA, Spring Integration, IBMMQ, TIBEMS, REST, Git, Gitlab, Autosys, Aeron, Chronicle, ElasticSearch.
Oct 2019 - Sep 2023
4 yearsSenior Fullstack Developer
GlobalLogic
- A large project whose purpose was to implement ETL data pipelines for data integration needs.
- Implemented REST endpoints powering ETL pipelines with Java transformations, database and file system writers.
- Leveraged Java 8 parallel streams and Camel parallel routes; built multiple listener mechanisms for AWS SQS.
- Designed strategy for generating pipeline code from templates.
- Debugged complex issues in Apache Camel, CXF, and Maven; implemented durable subscriptions for SQS modules.
- Tested and deployed solutions across AWS, Azure, and GCP environments.
- Acknowledged for outstanding customer support leading to client retention and new project engagements.
- Designed optimized data structures for batch processing large datasets.
- Developed React- and Angular-based UIs for initiating pipelines and monitoring their execution.
- Built ETL pipeline for product description normalization.
- Created Python script for price prediction to optimize e-commerce profitability.
- Invoked AI services for product data enrichment and HTML-to-text extraction, storing results in MongoDB.
- Developed and maintained Java applications, bugfixing, participating in daily scrum meetings.
- Tools: Eclipse, IntelliJ-Idea, ESB, WSO2, Java 8–11, Python3, Eclipse RCP, Mulesoft, Talend, JDBC/Hibernate/JPA, Kafka/ActiveMQ, Spring Boot, Angular, React, JaxB/Jackson, CXF, Jersey, Apache Camel, JET, REST/SOAP, gRPC, Tomcat, Netty, AWS (SQS, S3, EC2), Azure, GCP, Git, Jenkins, Jira, Postman, Scrum.
Aug 2018 - Oct 2019
1 year 3 monthsLead/Senior Java/React Developer
SoftServe
- A large microservice project providing web internet security solution for various firms.
- Optimized connection establishment relaxing security requirements and using most secure cipher suite.
- Designed a custom scanner which scans URLs on a page.
- Optimized threat scanning and security checks using concurrency API.
- Utilized JVisualVM to find memory leaks; application profiling.
- Implemented REST services and business logic in Spring and Scala.
- Designed data structure to implement exe file scanning.
- Fixed security and core issues.
- Administered servers and deployments on Mesos/Marathon.
- Used data structures to represent and scan executable files efficiently.
- Designed data structures for network traffic logs to process large volumes of web traffic.
- Monitored Vertica->Kafka->ELK pipeline and added Spark streaming processor.
- Developed efficient graph structures to analyze security threats.
- Developed firewall configuration module using React.
- Tools: Eclipse, IntelliJ Idea, Java 8–11, Scala, JavaScript, HTML, CSS, React, Spring/Spring Boot, IoC/DI, Spring Cloud, Hibernate/JPA/JDBC, gRPC, Kafka/Zookeeper, ElasticSearch/Kibana, SAML/SSO, Spark, Swagger/Open API, AWS (Route53, S3, EC2), Bare-Metal Servers, CentOS, Vertica, CouchBase, PostgreSQL, Apache Mesos, Kubernetes/Terraform, Docker, Etcd, Consul, Puppet, KeyCloak, Gatling, JMeter, Grafana, Gerrit, Postman, AWS Serverless.
Apr 2015 - Sep 2017
2 years 6 monthsFull-Stack Developer
Waves Audio
- Project intended to optimize quality of audio on mobile devices and support company website.
- Developed GUI modules of the various apps and website.
- Tools: Spring, Java, MySQL, Spring Security, React, Redis.
Nov 2013 - Mar 2015
1 year 5 monthsFull Stack Java Developer
GlobalLogic Ukraine
- The goal was to develop software to improve management of resources of a bank with about 50 million customers.
- Developed a user-friendly onboarding system for enterprise customers reducing process time by 40%.
- Implemented a comprehensive auditing feature ensuring compliance with industry regulations.
- Received recognition from the team lead for delivering high-quality code and meeting milestones ahead of schedule.
- Developed the UI/UX team to revamp the user interface increasing user engagement.
- Integrated a third-party API expanding system functionality leading to a 20% increase in user retention.
- Participated in SCRUM meetings; implemented new features; learning and consulting; creating a roadmap for self-development; bug fixing.
- Tools: Java 5, GWT, Vaadin, EJB/JSF, Servlets, Jersey, Mybatis/JDBC, gRPC, PL/SQL, XML, JavaFX, Thymeleaf, REST/SOAP, Oracle, Eclipse, Gerrit, Jira, Jenkins, Ant, WebLogic.
Summary
With over a decade of hands-on experience, I specialize in crafting innovative, cloud-native solutions that drive performance and scalability. Notably, I spearheaded the development of the Spark Java Agent at Cisco, revolutionizing system observability. My recent endeavors include architecting robust microservices, mastering Infrastructure as Code (IaC) with Terraform, and fine-tuning deployment workflows with CI/CD tools like Jenkins. A tech enthusiast at heart, I excel in Java, Spring Boot, AWS, Kubernetes, and Apache Kafka, with a proven track record in DevOps and distributed systems.
Currently, I lead strategic technical initiatives, mentor talented teams, and ensure every solution delivers measurable business impact. My future focus? Pioneering advancements in serverless computing and cutting-edge cloud architecture to push the boundaries of resilience and performance.
Languages
Ukrainian
NativeEnglish
IntermediateEducation
Oct 2010 - Jun 2014
National University Lviv Polytechnic
Software Engineering · Lviv, Ukraine
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