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You will get Custom Java Development with Spring Boot & AWS for Scalable SaaS Solutions
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Project details
You will get a custom-built Java application that’s production-ready, scalable, and secure. I specialize in building backend architectures for SaaS platforms using Java, Spring Boot, and AWS, with strong integration practices and clean code principles.
With over 10 years of experience in both freelance and enterprise development, I don’t just write code — I help solve real product challenges. Whether you’re launching an MVP or scaling an existing solution, I can jump in quickly, align with your tech stack, and deliver high-quality results.
🔧 My work includes:
Modular, well-documented Java code
RESTful APIs with Spring Security (JWT/OAuth2)
PostgreSQL or MongoDB integration
Dockerized deployment setup
AWS-ready architecture with CI/CD pipelines
Clients value me for being proactive, detail-oriented, and easy to communicate with. Let’s turn your SaaS idea into a fast, secure, and reliable product.
With over 10 years of experience in both freelance and enterprise development, I don’t just write code — I help solve real product challenges. Whether you’re launching an MVP or scaling an existing solution, I can jump in quickly, align with your tech stack, and deliver high-quality results.
🔧 My work includes:
Modular, well-documented Java code
RESTful APIs with Spring Security (JWT/OAuth2)
PostgreSQL or MongoDB integration
Dockerized deployment setup
AWS-ready architecture with CI/CD pipelines
Clients value me for being proactive, detail-oriented, and easy to communicate with. Let’s turn your SaaS idea into a fast, secure, and reliable product.
Programming Languages
JavaScript, Java, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$1,000
|
Standard
$2,500
|
Advanced
$5,000
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 15 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 3 | 6 | |
Design Customization | |||
Content Upload | - | ||
Responsive Design | - | ||
Source Code |
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IF
Ian F.
Feb 25, 2026
Java Web App Security Upgrade – Legacy System Fix & Minor Rebrand
Fantastic work by Oleksandr and his team. Can absolutely recommend them for any projects you might have. Will work with them again in the future.
UC
Umesh C.
Dec 24, 2025
Skilled Java Developer for Chat Server API Development
Excellent work as always! Closing this only because we're starting a new contract with Oleksandr.
JB
Joel B.
Jul 22, 2025
Backend Developer for Options Data Website
Save your time and searching. Work with Oleksandr.
YJ
Young J.
Jul 3, 2025
60 minute consultation
JM
Jake M.
Dec 12, 2024
Develop a secure and scalable API for capturing, processing, and storing loan application data
Oleksandr and team were great to work with and went above and beyond to develop a custom form for us with tight deadlines. Would definitely recommend them, and will engage again!
About Oleksandr
AI Systems Architect | Workflow Automation for Business Owners
100%
Job Success
Wesley Chapel, United States - 2:31 am local time
This isn't prompt engineering or generic chatbot work. I architect end-to-end AI systems: document intelligence pipelines, automated sorting and routing, AI-assisted data extraction, knowledge retrieval systems, and agent-driven workflows. Built to production standards with real engineering behind them.
What a typical engagement looks like:
We identify the single highest-friction workflow in your operation. I scope it, architect the AI solution, build it in a focused 2-4 week sprint, and hand you a working system your team can trust. Then we move to the next one.
Why clients hire me over other AI freelancers:
→ 20+ years of production engineering, including 4 years at Apple and enterprise work at Yahoo, Thomson Reuters and Citibank
→ Technical reviewer for Manning Publications ("Modern Java in Action")
→ Expert-Vetted on Upwork (top 1%), 100% Job Success, $200K+ earned
→ I've built AI-powered document processing, OCR extraction, and LLM integration in real production systems, not demos
→ I think like a business owner because I am one (founded and ran a 30-person software company)
Recent AI systems I've built:
- AI-powered loan processing system with document intelligence, OCR, and automated data extraction (Azure AI + OpenAI)
- Internal AI workflow orchestration, routing tasks across planning, development, QA, and DevOps agents
- Automated lead scoring and routing systems
- Knowledge retrieval systems for internal operations
- AI-assisted weekly reporting pipelines
Fixed-price sprint packages available for clearly scoped workflows. Let's talk about the one process that's costing you the most time.
P.S. I'm not a good fit for task-only, hourly-grind, or price-driven work. I work best with business owners who want a real results and systems, not a science project.
Steps for completing your project
After purchasing the project, send requirements so Oleksandr can start the project.
Delivery time starts when Oleksandr receives requirements from you.
Oleksandr works on your project following the steps below.
Revisions may occur after the delivery date.
Step 1: Requirements & Planning
Step 2: Development & Testing