Candidates 3231
$750 / mo
≈ $9000 / year net
Java Developer
Ukraine · Vinnytsia · 2 years of experience · Pre-Intermediate ·Published today
Ukraine · Vinnytsia · 2 years of experience · Pre-Intermediate ·Published today
JAVA DEVELOPER
Freelance 11.2021 - Present
develop systems and tools with an emphasis on performance and scalability
I work on database support, with functional and technical documentation
JUNIOR JAVA DEVELOPER
Epam 05.2021-11.2021
Taken part in all aspects of the project from design to development and testing
Worked on maintenance and improvement of existing applications
COMPUTER TYPING OPERATOR
Vinnytsia City Electric Networks 02.2014 - 05.2021
Performs operations with databases on computer equipment (input, processing, accumulation, systematization, output of informations
Технології які використовував:
Java Core
• Collections
• Stream API JVM basics
OOP basics, SOLID, PostgreSQL, SQL, MomgoDB
JDBC
• JPA
• Hibernate
• Servlet
Spring (base knowledge)
• JUnit Tools
• Maven
• Git
• IntelliJ IDEA
JavaScript HTML
CSS
$3000 / mo
≈ $36000 / year net
Java Developer
Ukraine · 4 years of experience · Upper-Intermediate ·Published today
Ukraine · 4 years of experience · Upper-Intermediate ·Published today
- Developed a custom reporting module that provided clients with granular insights into campaign performance, resulting in a 20% increase in client retention rates.
- Implemented automated testing processes within CI/CD pipelines, resulting in a 40% reduction in software bugs and a 30% increase in overall code quality metrics.
- Collaborated with cross-functional teams to successfully migrate data from the monolith to microservices, resulting in a 60% decrease in downtime during updates and maintenance.
- Conducted database schema optimization by performing indexing on critical tables, resulting in a 15% improvement in query performance.
- Participated in over 100 code review sessions, offering detailed feedback that led to a 15% increase in overall code quality within the team.
- Supported the integration of third-party data providers and ad exchanges, expanding targeting capabilities and driving a 15% increase in ad revenue.
Junior Java Developer
- Increased customer retention rate by troubleshooting and resolving payment errors promptly, leading to a 36% decrease in customer churn.
- Collaborated with cross-functional teams to prioritize feature development based on user feedback,
resulting in a 30% decrease in bounce rate and a 20% increase in revenue per flight.
- Enhanced software stability by increasing unit tests from 1604 to 1946.
- Actively contributed to code reviews, providing constructive feedback and suggestions for improvement, resulting in a 25% increase in code quality.
$400 / mo
≈ $4800 / year net
Java Developer
Ukraine · No experience · Intermediate ·Published today
Ukraine · No experience · Intermediate ·Published today
I have got strong knowledge OOP principal and
design patterns. Also I used many different technology
stacks: Maven, Gradle, JUnit, Mockito, MySQL, JDBC,
Hibernate, Spring etc. You can see my projects on my
GitHub repository.
$1000 / mo
≈ $12000 / year net
Розробник Java
Ukraine · 1.5 years of experience · Intermediate ·Published today
Ukraine · 1.5 years of experience · Intermediate ·Published today
$700 / mo
≈ $8400 / year net
junior java developer
Ukraine · Kyiv · No experience · Pre-Intermediate ·Published today
Ukraine · Kyiv · No experience · Pre-Intermediate ·Published today
$300 / mo
≈ $3600 / year net
Java Developer
Ukraine · Lviv · 1 year of experience · Upper-Intermediate ·Published today
Ukraine · Lviv · 1 year of experience · Upper-Intermediate ·Published today
In addition to my technical skills, I am a dedicated problem-solver who enjoys identifying potential challenges and proposing effective solutions to improve software quality and efficiency. I am a firm believer in collaborating with cross-functional teams to better understand project requirements, which I believe is vital for delivering high-quality software that meets the needs and expectations of stakeholders.
I am now actively seeking opportunities to apply my expertise and passion for Java in a professional setting. My goal is to design innovative, cost-effective Java solutions that not only meet the immediate needs of clients and end-users but also position projects for future growth and success. I look forward to contributing to exciting software development projects and continuously expanding my knowledge and skills in this dynamic field.
$7200 / mo
≈ $86400 / year net
CTO/Architect/Head of engineering
Ukraine · Odesa · 8 years of experience · Advanced/Fluent ·Published today
Ukraine · Odesa · 8 years of experience · Advanced/Fluent ·Published today
My current and previous positions were in technological leadership and delivery. I've stuffed multiple local and remote teams.
I develop my tech and management skills. Eventually my goal is to grow to CTO role
My largest engineering team was ~35 engineers total (both FE and BE), including 5 teams leads. I've hired this team from scratch and successfully delivered multiple projects.
Developed and presented a lot of tech solutions, performed pre-sales meetings. Worked directly with multiple customers, their on-site teams, etc.
Sustained attrition rate at 5-7% per year.
Game/gambling project are not preferred.
I try to avoid overtime as much as possible
$1200 / mo
≈ $14400 / year net
Java Developer
Ukraine · 2 years of experience · Upper-Intermediate ·Published today
Ukraine · 2 years of experience · Upper-Intermediate ·Published today
Lokimo (lokimo.app)
Location: Tallinn, Estonia
Duration: March 2022 - November 2023
- Contributed as a Junior Backend Developer in the Lokimo app project, a platform offering self-guided tours with offline navigation across more than 60 cities.
- Assisted in the development of backend systems, crucial for managing over 300 distinct routes, ensuring robust data management and seamless user experiences.
- Collaborated closely with frontend developers and UI/UX designers to ensure efficient data integration and consistency across the platform.
- Participated in the implementation of database solutions and server-side logic, contributing to the app's scalability and performance optimization.
- Engaged in regular code reviews and debugging sessions to maintain high-quality code standards and ensure reliable app performance.
- Supported the team in updating and refining the backend architecture in response to evolving project requirements and user feedback.
Java Core, Hibernate, Apache Tomcat, GSON, Spring Boot, REST API, Docker, JDBC, Concurrency, Junit, Mockito, Design Patterns
Side Projects
- TheEconomistTelegramBot: This is a Java-based Telegram bot that provides users with the latest updates from The Economist. It utilizes Telegram's bot API and web scraping technologies for real-time news fetching and scheduled postings. The bot is designed for easy deployment with Docker and Railway, making it a convenient tool for those interested in global and economic news.
t.me / Theworldinbrief_bot
- Equity Model Backtesting Framework: This is a Java application developed for simulating stock trading strategies. It uses historical stock data to implement and test strategies, such as the Moving Average Crossover, enhancing skills in data handling and algorithm development.
- Ergast F1 API Wrapper: This project involves creating a tool for accessing and managing motor racing data, demonstrating abilities in API integration and effective data management.
- Polygon Ticker Service: A RESTful API service built using the Polygon.io API, this project focuses on handling real-time financial data and integrating with external services.
github/RomanPilyushin
Market Expansion through Integration: Achieved seamless integration with Viator, which allowed the company to tap into a broader market by selling tours on a well-established platform, thereby expanding the customer base and increasing revenue streams.
Customization for Diverse Clientele: Spearheaded the development of customizable whitelabel solutions, enabling the company to cater to a variety of clients under different brands while maintaining a unified backend. This approach streamlined operations and enhanced client satisfaction.
Adaptive Database Management: Demonstrated proficiency in dynamic database management, ensuring that data structures were continuously optimized to support the evolving nature of the product and its features.
Cross-Functional Team Collaboration: Collaborated effectively with cross-functional teams, contributing to a synergistic work environment that facilitated the timely and successful delivery of complex project components.
Overall Portfolio: My work, thoroughly documented and accessible on my GitHub profile (github/RomanPilyushin), reflects a strong foundation in Java programming and a commitment to continuous learning and development in the field of software engineering. My projects demonstrate a diverse range of skills, from real-time data processing to algorithm development and API integration.
$1500 / mo
≈ $18000 / year net
Java Developer
Ukraine · Kyiv · 2 years of experience · Upper-Intermediate ·Published today
Ukraine · Kyiv · 2 years of experience · Upper-Intermediate ·Published today
— DevHub. A social network, created to ensure comfortable development of the professional community, allows users to freely express their ideas, create publications and communicate with like-minded people around the world.
— Search engine. A high-tech, load-resistant tool that provides an API based on smart algorithms for indexing and further analyzing the content of websites.
— Hospital reception system. The project provides basic functions for hospital reception such as work scheduling and searching patients.
— Metro mapper. This tool aims to compute absolutely every shortest route in the city and even calculate an approximate time of journey.
Work experience:
— Java Developer (Altkom Software & Consulting).
• Active participation in daily stand-ups, sprint planning and retrospectives to ensure continuous implementation of iterative improvements.
• Discussion of architectural solutions and exchange of experience.
• Writing unit and integration tests.
• Working with Git version controls.
• Maintaining the integrity of databases.
— Physics teacher (Setstud, Kyiv).
• Teaching about 100 students for entrance exams.
• Creating educational program, following which every student can achieve the desired results as quickly and efficiently as possible.
$1000 / mo
≈ $12000 / year net
Java Developer
Ukraine · Lviv · 1.5 years of experience · Intermediate ·Published today
Ukraine · Lviv · 1.5 years of experience · Intermediate ·Published today
The skills I mentioned above were particularly utilized in this project. I extensively worked with microservices and even developed two new ones: the first for integrating the platform with another messaging system, and the second for generating invoices for interactions with the platform.