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Iryna K.

Iryna K.

Java Developer Spring Boot Spring Framework Microservice AWS MySQL

Hi, I’m a Java Developer with extensive experience in software development, specializing in backend, and full-stack solutions. I build high-performance, scalable applications using Java, Spring Boot, and modern web technologies. My expertise covers RESTful API design, microservices architecture, and cloud-based solutions with Amazon Web Services (AWS) and Docker. ✔ Core Skills & Technologies: I leverage a versatile tech stack to build scalable, secure, and high-performance applications, ensuring reliability and efficiency. 🟢 Programming Languages: Java, JavaScript, TypeScript, Python, PHP – Used to develop 20+ enterprise applications, handling thousands of daily users. 🟢 Frameworks & Libraries: Java Spring Boot, Spring Framework, Hibernate, React, Angular, jQuery – Optimized system performance, improving response times by 25%. 🟢 Database Management: MySQL, SQL, MongoDB – Designed and maintained databases processing over 1M+ transactions monthly. 🟢 Web & Application Development: Web Development, Java Development, Desktop Applications, Standalone Applications, WordPress – Delivered 50+ projects, enhancing client operations and user engagement. 🟢 DevOps & Deployment: Docker, Apache Tomcat, Git – Streamlined CI/CD pipelines, reducing deployment time by 30%. 🟢 Software Engineering: Software Architecture & Design, Software Development, Software Debugging – As a Java Developer I developed scalable solutions supporting 50K+ active users. 🟢 UI/UX: HTML CSS JavaScript, HTML5, CSS3 – Created responsive interfaces that increased user engagement by 20%. 🟢 Testing & Quality Assurance: JUnit, Software Testing – Reduced production issues by 40% through automated and manual testing. ✔ What I Build as a Java Developer My expertise spans across developing: 🟢 Backend Systems: Scalable microservices architectures, high-performance enterprise applications, developed by a Java Developer 🟢 Web Development: Secure full-stack solutions with Spring Boot, JavaScript, HTML, CSS 🟢 API Development & Integrations: RESTful API, GraphQL, third-party API integrations 🟢 SaaS Platforms: Cloud-powered software development with AWS, Docker, and Kubernetes 🟢 Custom CRM & ERP Solutions: Optimized for business process automation 🟢 DevOps & Infrastructure: CI/CD pipelines, cloud deployment, serverless solutions ✔ Industries I Work With My solutions empower businesses in diverse industries: 🟢 EdTech & E-Learning: LMS platforms, interactive e-learning solutions 🟢 HealthTech & Medical: Secure healthcare applications, compliance-driven systems 🟢 E-commerce & Retail: Payment integrations, inventory management solutions 🟢 FinTech & Banking: Secure financial applications, transaction processing 🟢 SaaS & Enterprise Software: B2B platforms, cloud-based solutions 🟢 HRTech & Recruitment: Custom HR systems, workforce analytics 🟢 Manufacturing & Logistics: ERP integrations, supply chain management 🟢 Travel & Booking: Reservation systems, customer portals ✔ Development Approach & Work Style 🟢 Problem-Solving Mindset: Writing clean, maintainable, and well-documented code for scalability 🟢 Client-Centric Approach: Aligning technology solutions with business goals 🟢 Agile Software Development: Iterative development, CI/CD pipelines, continuous integration 🟢 Performance & Security Focused: Optimized queries, security best practices ✔ Leadership & Client Impact: 🟢 Led teams of 5+ Java developers to implement scalable Java solutions for clients worldwide( from India to the US). 🟢 As a Java Developer, I developed Java-based platforms contributing to a significant increase in client revenue. 🟢 Consistently received 4.9/5 ratings, reflecting dedication to quality and client success. If you're looking for an experienced Java Developer, Senior Java Developer, Full Stack Developer, Java Spring developer, Javascript Developer, Python Developer, Java developer India to build scalable, high-performance applications, let’s connect!🚀

🇺🇦Kharkiv, Ukraine$50/hr100% JSS4.77 (27)Since Oct 2015
GlobeUpwork

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#59,108 / 412k
🇺🇦Country#3,633 / 14.3k
Revenue, last 30 days
$0
Total earnings
$67k

Billed in all: $79k

World#59,108 / 412k
🇺🇦Country#3,633 / 14.3k
Per project
$1.7k
Projects, last 6 months
0
World#209,850 / 412k
🇺🇦Country#7,324 / 14.3k
Projects in all
39

Across 42 contracts

40% fixed60% hourly
World#77,390 / 412k
🇺🇦Country#3,456 / 14.3k

Earnings, last 30 days

$79.4kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$78k$79k$80k$81kOct 8Oct 23Nov 7

Skills