Candidates 82
$6000 / mo
≈ $72000 / year net
Java Developer
Ukraine · Odesa · 6 years of experience · Advanced/Fluent ·Published today · In passive search
Ukraine · Odesa · 6 years of experience · Advanced/Fluent ·Published today · In passive search
$6500 / mo
≈ $78000 / year net
Java Senior Engineer / Team Lead
Ukraine · 8 years of experience · Upper-Intermediate ·Published yesterday
Ukraine · 8 years of experience · Upper-Intermediate ·Published yesterday
9 years of commercial experience in web development. Worked for various global companies, employing both Outsourcing and Outstaffing models. Profound knowledge of Java and frameworks. Great experience in microservice architecture, REST, JMS and Amazon Web Services. Skilled in configuring CI/CD and DevOps.
$6500 / mo
≈ $78000 / year net
Tech Lead
Ukraine · 7 years of experience · Upper-Intermediate ·Published yesterday
Ukraine · 7 years of experience · Upper-Intermediate ·Published yesterday
Supported architecture of 5 microservices, that were connected to each other by Kafka, HTTP and GRPC. 3 of them were implemented using Java, 2 of them were implemented using Ruby On Rails and TypeScript. One of my proposed solutions was resource usage optimization of AWS EC2 machines, that performed Github build of Docker images
List of some responsibilities:
1. Close communication with technical staff from customer side about supported 5 microser-
vices and other.
2. Consultation teams about ways to resolve infrastructure problems. 3. Providing POCs for new architecture challenges.
4. Providing support for teams during solution implementation.
Technologies: AWS (CodeBuild, CodePipeline, Connector, EC2, S3, Security Groups, IAM, Auto Scaling groups, LoadBalancer, CloudWatch, CloudFront), GCP, Ruby On Rails, Vertx, Java 11/17, Github CICD, Jenkins, Artifactory JFrog, Kafka, MySql, TypeScript, React.
• Introduced two POC. One is Kafka tracing implementation for reactive framework Vertx, that was successfully implemented and delivered to production. Second one is adding ability to use locally changed JavaScritpt code on the fly for production without reboot application, that leaded to reducing of AWS EC2 costs.
• During building new microservice, our main goal was to have it running in AWS. We used for that AWS CodeBuild, AWS CodePipeline connected to Github by AWS Connector, EC2, S3, Security Groups, IAM. Second part was to add AWS Auto Scaling groups and application load balancer. For metrics we used AWS CloudWatch. Another goal was to get media files from different time zones. We archived it by using AWS CloudFront before S3 bucket. As we loaded data from different zones, it became available to use cache from CloudFront
• Implementing SaaS for B2B customer. Technical owner of several parts of the solution, using ElasticSearch, Cassandra, RabbitMQ, Redis were examined
• Implementation Spring reactive RabbitMQ client for core solution.
• Implementation reactive Profiler for platform solution.
Provided POC how to migrate from legacy Java microservice on Spring to Quarkus + Native image and realized it in production solution. Consult on pre-sale calls with AWS infrastructure (migration and hybrid environment). Supported two projects with the building of architecture solutions.
$4500 / mo
≈ $54000 / year net
Middle/Senior Software Developer
Ukraine · Odesa · More than 10 years of experience · Intermediate ·Published yesterday · In passive search
Ukraine · Odesa · More than 10 years of experience · Intermediate ·Published yesterday · In passive search
I also have 10 years of experience as a С++ developer in Automotive (Navigation).
Skills: C++ 17, Java, STL, Multithreading, SQL, XML, Linux, Qt, Thrift.ME, Boost C++ Libraries, MOCCA, Git, Perforce, Object Oriented Analysis/Design, PlantUML.
$2500 / mo
≈ $30000 / year net
Java Developer
Ukraine · 4 years of experience · Upper-Intermediate ·Published 22 April
Ukraine · 4 years of experience · Upper-Intermediate ·Published 22 April
Half a year of experience as a freelance developer working
on small Java SE apps
• Performance tests creation
• Finding and fixing defects/bugs in the application
• Individual application elements development
Working on CISCO projects
2 years of enterprise experience developing enterprise Cisco
products built on microservice architecture
Used technology stack:
• Java 8 - 11, Spring framework, Hibernate, MongoDB, PostgreSQL, Docker, RabbitMQ, Kafka, Maven, Gradle, Git
• JUnit, TestNG, Selenium for unit and feature testing
• GitHub, BitBucket as VCS management
• SonarQube for code analysis
• Rally, Trello for task management
Scrum methodology
The whole development process was based on CI/CD
practice.
Aspose
1 year of .Net C#, Java reverse engeneering and API
development experience:
• Java 8 - 16, .Net Framework 3.5 - 4.8, Maven, Git
• Jenkins for CI/CD development
• GitLab for VCS management
• JUnit, TestNG for UT
• Redmine for task, progress and time management
Web2-3 startUp
Key role in web3 project based on microservice architecture. Position of TechLead/TeamLead. Managing a team of 5 developers (backend, frontend, devops).
Main stack: • Java 17-21, Python 3, AI tools
• Spring Framework (Boot, Cloud, Security)
• Java + Python web3 libraries
• Apache Kafka
• MongoDB
• Exchange, blockchain APIs
$7000 / mo
≈ $84000 / year net
Backend Tech Lead
Ukraine · More than 10 years of experience · Upper-Intermediate ·Published 22 April · In passive search
Ukraine · More than 10 years of experience · Upper-Intermediate ·Published 22 April · In passive search
Complete development cycle - from IoT devices and cameras firmware specification, database indexes, JMV perofrmance tuning, jQuery Web UI.
Experienced in communication with anxious customers.
Able to fix issues caused by overload of network/virtualization/multithreading/hardware resources.
Improved web server application startup from 40 minutes to 3 miinutes.
Increased web interface response time by adding one database index. Don't have exact metrics but customer assitance department noticed this in 15 minutes.
$4500 / mo
≈ $54000 / year net
Senior Java Developer
Ukraine · More than 10 years of experience · Advanced/Fluent ·Published 22 April
Ukraine · More than 10 years of experience · Advanced/Fluent ·Published 22 April
Front-end technologies: Angular 15, TypeScript 5
Back-end technologies: Spring 6, Hibernate 6, Spring Data, Spring Cloud, TDD, microservices, MongoDB, Redis, Kafka, Jakarta EE 10
DevOps: Docker, Kubernetes, Terraform.
$3500 / mo
≈ $42000 / year net
Software engineer
Ukraine · Odesa · 6 years of experience · Intermediate ·Published 22 April
Ukraine · Odesa · 6 years of experience · Intermediate ·Published 22 April
Advanced proficiency in Java, Kotlin, Node.js, and Nest.js, with over 6 years of experience in Java, 2 years in Kotlin, and significant experience implementing scalable backend services using Node.js and Nest.js. This diverse expertise led to the development of highly efficient, scalable back-end systems across multiple projects, demonstrating versatility and a deep understanding of different programming paradigms and frameworks.. Expertise in relational database management, optimizing data storage and retrieval processes, which enhanced database performance and reliability for critical applications. Leveraged message brokers effectively, ensuring reliable message queuing and event-driven communication between microservices, which enhanced application responsiveness and reliability. Utilized Kubernetes and Docker for container orchestration and deployment, streamlining CI/CD pipelines and enabling agile, scalable application deployment environments. Developed applications using Spring Boot, accelerating development cycles and improving application security and performance through comprehensive framework capabilities.
Collaborated with cross-functional teams to align development efforts with business goals, contributing to project successes and fostering a culture of innovation and continuous improvement. Mentored junior developers in Java, Kotlin, and microservices best practices, enhancing team capabilities and contributing to the professional growth of colleagues.
$6000 / mo
≈ $72000 / year net
Middle .NET Developer
Ukraine · 3 years of experience · Upper-Intermediate ·Published 22 April
Ukraine · 3 years of experience · Upper-Intermediate ·Published 22 April
Designed, developed, and maintained highly robust, scalable, and efficient applications utilizing the .NET framework and React.
Demonstrated expertise in writing clean, well-structured, and maintainable code, consistently adhering to industry best practices.
Conducted thorough code reviews to ensure high code quality and adherence to established coding standards.
Employed advanced troubleshooting and debugging techniques, resulting in optimized application performance and scalability.
Worked in tandem with front-end developers to seamlessly integrate user-facing elements with server-side logic.
Implemented and maintained sophisticated data storage solutions and databases, ensuring seamless data management.
Developed and maintained comprehensive unit tests, guaranteeing the reliability and quality of the codebase.
Kept abreast of emerging technologies and industry trends, applying them to enhance development processes and practices.
Proficient in C# and the .NET framework, with expertise in ASP.NET MVC and ASP.NET Core.
Solid understanding of React, along with proficiency in front-end technologies such as HTML, CSS, and JavaScript.
Extensive experience with RESTful APIs, web services, and SQL Server for relational database management.
Expertise in version control systems, including Git, and familiarity with modern development tools (e.g., Visual Studio, npm, webpack).
Skilled in automated testing frameworks like Jest and NUnit, ensuring code reliability and quality.
Knowledgeable in containerization and orchestration tools such as Docker and Kubernetes.
Spearheaded the implementation of modern software development practices, including Continuous Integration/Continuous Deployment (CI/CD) pipelines, leading to a 40% reduction in deployment time.
$6600 / mo
≈ $79200 / year net
Senior Java Developer
Ukraine · Odesa · 7 years of experience · Upper-Intermediate ·Published 19 April
Ukraine · Odesa · 7 years of experience · Upper-Intermediate ·Published 19 April
(Apr 2016 – Aug 2016)
Java Software Engineer
NASA Ames Research Center (GSoC)
Improved and tested jpf-nhandler – an extension of Java Path Finder.
Designed and implemented cache for native methods.
Used technologies: Ant, Reflection API, Junit.
(Apr 2017 – Aug 2017)
Java Software Engineer
NASA Ames Research Center (GSoC)
Improved and tested jpf-nas – an extension of Java Path Finder.
Tuned application memory consumption using persistent data structures.
Used technologies: Ant, Reflection API, Junit, PCollections.
(October 2016 – March 2018)Java Software Engineer
EPAM Systems
Took part in development of einvoicing application.
Proposed and discussed implementation of different features / bug fixes.
Investigated and fixed bugs.
Participated in production support.
Implemented and enhanced frontend part of application.
Supported correspondence between program and relational representation of business object model (liquibase scripts).
Enhanced code quality and test coverage for Sonar quality gates.
Used technologies: EJB, REST, Web Sockets, Microservices, Hibernate, Oracle DB, Liquibase, Gradle, Junit, Mockito, Sonar, Angular JS, lodash/fp, karma.
(March 2018 – February 2020)
Java Software Engineer
AgileEngine
Took part in development of application for tracking different kinds of
deliveries.
Integrated systems of clients with our application.
Written automated tests to cover new functionality.
Integrated tool for collecting tracking information from different websites.
Fixed various bugs.
Participated in production support.
Elaborated and analysed new features.
Used technologies: Microservices, Spring Boot, Hibernate, PostgreSQL,
Kafka, Docker, Gradle, Maven, Junit, Mockito, Ansible, Amazon AWS.
Used technologies: Microservices, Spring Boot, Hibernate, PostgreSQL, Kafka, Docker, Gradle, Maven, Junit, Mockito, Ansible, Amazon AWS.
(March 2020 – present)
Java Software Engineer
Luxoft
Investigated financial domain.
Analysed and implemented integration of new customer. Integration includes direct files and third party APIs and clients integration.
Performed migration of microservice codebase from java6 to java8.
Improved performance of interaction with database.
Reorganized db level introducing relational model.
Looking for interesting project with modern technologies.