Candidates 128
$1200 / mo
≈ $14400 / year net
Java Developer
Ukraine · Odesa · 2 years of experience · Upper-Intermediate ·Published today
Ukraine · Odesa · 2 years of experience · Upper-Intermediate ·Published today
Prefer to be open to people and be a part of my team.
Experience:
NGO (August 2023- September 2023)
Marketplace for volunteers. Implemented static code analyzer.Fixed over 1500 bugs. Refactored over 500 classes. Set up classesautogeneration with OpenApi,
(Spring Boot, JPA, Hibernate, OpenApi, Docker,SQL-Server, H2, JUnit, AssertJ, GitLab)
Wallet Bot (November 2022 - September 2023)
App for managing private finances. I developed most of the back-end part. It is about 100 classes, 3 Docker containers, 2 databases,2 architectural patterns implemented. Moved DB on AWS RDS.
(Spring Boot, JPA, Amazon Web Services (AWS),PostgreSQL, MSSQL, Telegram API, JUnit, GitHub)
DarbiTask.com (May 2022 - September 2022)
Marketplace. Part-time work. Was creating repositories, service-layer, REST controllers, model classes, and unit tests. Worked withSQL Server and Docker containers.
(Spring Boot, JPA, Hibernate, Swagger, Docker,SQL-Server, JUnit Tests, GitLab)
AltraInvest (2021 - March 2022)
Trainee. Part-time work. Inner project for managing warehousestocks. Handling endpoints, writing queries, and refactoring code.
(Spring Boot, JPA, Hibernate, Swagger, Docker,SQL-Server, JUnit Tests, GitLab)
Offered to use Strategy pattern to choose and use wanted class instead of using reflect API.
I will give my full attention to growing our company up.
$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.
$500 / mo
≈ $6000 / year net
Junior Java Developer
Ukraine · 1 year of experience · Upper-Intermediate ·Published 22 April
Ukraine · 1 year of experience · Upper-Intermediate ·Published 22 April
Web application for saving information to a database.
Using Spring Boot, Caching, Thymeleaf, Spring Security, Maven, JUnit, Mockito.
Web application for receiving notifications on a webhook, saving to a database and sending to another webhook.
- Business process automation
- Setting up synchronization with the online store
- Setting up and implementing two-way operation of the
telegram bot
- Integration with software cash register
- Implementation of the address storage system
- Implementation of a system for accounting for defective goods
- Connection of various commercial equipment
$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.