You will get a Java developer for back end development
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Hello 👋, I'm a Java developer
Attention. I specialize in Java engineering and stack related to Java only. I don't consider other technologies. You can see the proof in my profile.
Get ready to receive custom Java solutions that will solve your technical goals! Whether it's building microservices, optimizing cloud applications, or improving backend performance, you'll receive a tailored solution crafted to your needs. I'll guide you through each stage, ensuring code quality and performance optimization throughout the process.
Check out my reviews and discover why each customer walks away with the perfect Java development solution! Your project will be different, as I tailor each solution to solve your unique challenges.
Is this closer to what you need? I'm ready to start the discussion.
Please don't submit funds UNTIL we discuss scope of the project over the chat. Based on Upwork Rules, without agreeing on the details, I have the right to cancel the project
Attention. I specialize in Java engineering and stack related to Java only. I don't consider other technologies. You can see the proof in my profile.
Get ready to receive custom Java solutions that will solve your technical goals! Whether it's building microservices, optimizing cloud applications, or improving backend performance, you'll receive a tailored solution crafted to your needs. I'll guide you through each stage, ensuring code quality and performance optimization throughout the process.
Check out my reviews and discover why each customer walks away with the perfect Java development solution! Your project will be different, as I tailor each solution to solve your unique challenges.
Is this closer to what you need? I'm ready to start the discussion.
Please don't submit funds UNTIL we discuss scope of the project over the chat. Based on Upwork Rules, without agreeing on the details, I have the right to cancel the project
Programming Languages
JavaCoding Expertise
Performance Optimization, SecurityWhat's included $35
These options are included with the project scope.
$35
- Delivery Time 2 days
- Number of Revisions 2
- Number of Pages 1
- Source Code
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About Bohdan
Java developer | Java Backend Developer | AWS Cloud Engineer | DevOps
100%
Job Success
Vinnitsa, Ukraine - 2:35 pm local time
With over 8 years building backend systems as a Senior Java Developer, I solve complex technical challenges across the full stack from microservices to cloud-native infrastructure. Whether it's designing Spring Boot services, architecting AWS environments, or setting up DevOps pipelines, I bring the expertise that every Java Developer must have, combined with the cloud and infrastructure skills that modern systems demand.
𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗕𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱:
➡ Over 8 years as a Java Developer in end-to-end software development across the full delivery cycle.
➡ Designing Spring Boot microservices and high-performance Java applications for fintech, healthcare, SaaS, and e-commerce as a Java Backend Develope and now extending that into cloud engineering and DevOps.
➡ AWS Cloud Engineer - EC2, S3, Lambda, SQS, SNS, IAM, API Gateway, CloudFormation. I design and run cloud infrastructure, not just deploy to it.
➡ DevOps & CI/CD - Docker, Kubernetes (K8s), Helm, Terraform, Jenkins, Azure DevOps, OpenShift. Working with both AWS DevOps and Azure DevOps pipelines that ship code reliably.
➡ Network engineering in cloud environments
➡Over 20 completed projects as a java software engineer
𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 𝗮𝗻𝗱 𝗙𝗼𝗰𝘂𝘀:
➡ Led cross-functional teams as a Senior Java Developer, delivering clean architecture and scalable cloud-connected solutions.
➡ Guided developers in Spring Boot, Java, and React as a lead Java Backend Developer, maintaining enterprise-grade quality standards.
➡ Consistently raised team output by implementing the best practices any Senior Java Developer is expected to own.
𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬 & 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬
As a Java Backend Developer I work with:
✅ Languages: Java, Java 8, Java 11, Java SE, Java EE, JavaFX, SQL, JSON, XML, YAML, Python
✅ Frameworks: Spring (Spring Boot, Spring MVC, Spring Data, Spring Cloud, Spring Security, Spring AOP, Spring Batch, Spring WebFlux), Hibernate, JPA, Quarkus, React, Node.js
As a Senior Java Developer, I use these to build enterprise applications that are maintainable, scalable, and secure.
𝐂𝐥𝐨𝐮𝐝, 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞
✅ AWS Cloud Engineer: EC2, S3, SQS, SNS, Lambda, IAM, RDS, API Gateway, CloudWatch, CloudFormation
✅ Azure Cloud Engineer: Azure DevOps, Azure Kubernetes Service
✅ Google Cloud Engineer: GCP core services
✅ Kubernetes, Helm, Docker, Terraform, Jenkins, Maven, Gradle, Git (GitLab, Bitbucket)
✅ AWS DevOps & Azure DevOps pipelines, OpenShift, Infrastructure as Code
𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐌𝐞𝐬𝐬𝐚𝐠𝐢𝐧𝐠
✅ MySQL, PostgreSQL, MongoDB, Redis, DynamoDB
✅ Kafka, RabbitMQ, REST APIs, SOAP, gRPC, WebSockets
𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐚𝐥 𝐏𝐚𝐭𝐭𝐞𝐫𝐧𝐬 & 𝐏𝐫𝐢𝐧𝐜𝐢𝐩𝐥𝐞𝐬
✅ Architectures: Microservices, Event-driven, SOA, Monoliths
✅ Patterns: CQRS, Saga, Circuit Breakers, Service Discovery, Distributed Systems
✅ Principles: SOLID, Clean Code, Domain-Driven Design (DDD)
A Java Developer must master these to deliver systems that scale that's what I build every day.
𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬
✅ Testing: JUnit, Mockito, TestNG, Unit & Integration Testing
✅ Methodologies: Agile (Scrum, Kanban), TDD, BDD
✅ Version Control: Git, GitLab, Bitbucket
My workflow as a Senior Java Developer runs on Agile principles and a test-first mindset, producing applications that are production-ready from day one.
𝐀𝐫𝐞𝐚𝐬 𝐨𝐟 𝐀𝐜𝐭𝐢𝐯𝐢𝐭𝐲
Backend development • Full-stack development with Spring Boot + React • AWS cloud engineering • Azure cloud engineering • Google cloud engineering • DevOps & CI/CD • Network engineering • API integration • Cloud-native applications • SaaS platforms • Android Java development
As a Senior Java Developer and aws cloud engineer, I cover the full path from backend code to cloud deployment.
𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬
During my career as a Java Backend Developer I've worked across: Fintech • Healthcare • E-commerce • Enterprise Applications • Cloud Computing • Telecommunications • Logistics • Travel & Hospitality • Media • Automotive • Blockchain • IoT • SaaS • Retail
𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧𝐬 & 𝐑𝐨𝐥𝐞𝐬
✔ Senior Java Developer
✔ Java Spring Boot Developer
✔ Java Backend Developer
✔ AWS Cloud Engineer / AWS DevOps Engineer
✔ Azure Cloud Engineer / Azure DevOps
✔ Google Cloud Engineer
✔ Kubernetes & Network Engineer
✔ API Developer
✔ Full-Stack Developer (Spring Boot + React)
✔ Android Java App Developer
𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬
✔ Java Development Services ✔ Spring Boot Microservices Development ✔ AWS Cloud Engineering & Migration ✔ AWS DevOps / Azure DevOps Pipeline Setup ✔ Kubernetes Cluster Management ✔ Infrastructure as Code (Terraform) ✔ API & System Integration ✔ SaaS Application Development ✔ Android Java App Development ✔ Performance Tuning & Code Reviews
👉 Need a Java Developer who writes clean code and ships it to the cloud? Just drop me a message
04/06/2026
Steps for completing your project
After purchasing the project, send requirements so Bohdan can start the project.
Delivery time starts when Bohdan receives requirements from you.
Bohdan works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements/Code review
Timeline and budget estimation