You will get a Java developer for Spring boot development service
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Hello 👋, I'm 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
JavaWhat's included $35
These options are included with the project scope.
$35
- Delivery Time 1 day
- Number of Revisions 3
- Number of Pages 3
- Source Code
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About Bohdan
Java developer | Backend Developer | AWS Developer | AI developer
100%
Job Success
Vinnitsa, Ukraine - 5:37 pm local time
I'm a Java developer with 8+ years delivering production-grade systems from serverless AWS architectures to distributed microservices serving healthcare and fintech clients.
𝗪𝗵𝗮𝘁 𝗜'𝘃𝗲 𝗕𝘂𝗶𝗹𝘁
➡ As lead Java developer at my current company, managed a team of 8 engineers over 7 years — delivering 4 production systems across healthcare, fintech, and AI verticals.
➡ Designed serverless AWS infrastructure for a US longevity and healthcare platform as an AWS developer — Lambda, AppSync, DynamoDB, Cognito, SNS/SQS, Stripe, HubSpot currently in production.
➡ Led migration from monolithic Spring apps to distributed microservices — reducing deployment complexity and enabling independent scaling per service.
➡ Built a PDF/UA accessibility compliance platform as backend developer using Java 21, iText 7, PDFBox, veraPDF processing and remediating documents of hundreds of pages against international accessibility standards.
➡ Delivered an AI-powered workflow automation platform as an AI developer integrating Spring AI, Azure cloud, and automated Stripe subscription workflows.
➡ Shipped a medical practitioner dashboard integrating 3rd-party hardware APIs and clinical toolkits as backend developer and tech lead serving real patients and practitioners in production.
Core experience as a Java developer and Backend developer
As a Java developer with 8+ years in production systems, my core is Java 8 through Java 21 with the full Spring ecosystem Boot, Cloud, Security, WebFlux, Batch, and Spring AI for AI-integrated backends. I work across both relational (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB, Redis) databases, selecting the right store based on access patterns not habit.
As a backend developer I've optimised slow MongoDB queries to cut response times, redesigned DynamoDB access patterns for a high-throughput healthcare API, and built Redis caching layers that kept latency flat under load.
As an AWS developer, my hands-on stack covers Lambda, AppSync, DynamoDB, Cognito, SQS, SNS, SES, S3, API Gateway, Route 53, and CloudFormation built and maintained in a live US healthcare platform. I design serverless pipelines end-to-end, not just deploy to them. For async workloads I wire event-driven systems using Kafka, RabbitMQ, or AWS SNS/SQS depending on durability and throughput requirements. On the container side: Docker, Kubernetes, Helm, OpenShift, Terraform, and Jenkins full IaC from infrastructure definition to CI/CD pipeline.
As an AI developer, I've shipped Spring AI integrations for workflow automation backends, built document intelligence services capable of processing and remediating hundreds-of-pages PDFs against accessibility standards, and connected GraphQL APIs via AWS AppSync for mobile and web AI-driven applications.
I also have production experience integrating medical hardware APIs, Stripe subscription billing, and HubSpot CRM sync into Java backends the kind of third-party integration work every backend developer eventually owns in a real product.
AWS Developer & 𝗖𝗹𝗼𝘂𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴
✅ Currently operating as AWS developer on a live healthcare platform Lambda, AppSync, DynamoDB, Cognito, SQS/SNS/SES, S3, API Gateway, Route 53, CloudFormation
✅ Experience as AWS developer across serverless, containerized (ECS/K8s), and IaC (Terraform, CloudFormation) environments
✅ Also experienced across Azure (AKS, Azure DevOps) and GCP as multi-cloud backend developer
✅ Kubernetes, Helm, Docker, OpenShift, Jenkins, Terraform the full DevOps chain every AWS developer deploys through
AI developer 𝗖𝗮𝗽𝗮𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀
✅ Delivered AI-powered backend services as AI developer using Spring AI automated content generation and workflow orchestration at scale
✅ AWS AppSync + DynamoDB + Cognito pipeline for a live healthcare platform: the architecture an AI developer builds when latency and data integrity are non-negotiable
✅ Experienced AI developer integrating third-party AI tooling with enterprise Java backends designing event-driven pipelines that handle async AI workloads via Kafka and SQS
✅ As AI developer, built document intelligence features automated PDF tagging, structure remediation, and accessibility validation across large document corpora
𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀
Healthcare · Fintech · SaaS · E-commerce · Logistics · Telecom · IoT · Blockchain · Automotive · Media
𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻𝘀 & 𝗥𝗼𝗹𝗲𝘀
✔ Senior Java Developer · Java Spring Boot Developer · Java Backend Developer
✔ AWS Cloud Engineer · AWS DevOps Engineer
✔ Azure Cloud Engineer · Google Cloud Engineer
✔ AI Backend Developer · Full-Stack Developer (Spring Boot + React)
✔ AI Backend Developer · Full-Stack Developer (Spring Boot + React)
Need a Java developer, backend developer, AWS developer, or AI developer who ships production systems — not prototypes? 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