You will get One Spring Boot microservice extracted from your Java monolith, with tests
Project details
Your monolith isn't the problem. Not being able to change one part without redeploying all of it — that's the problem.
I extract bounded contexts out of Java/Spring Boot monoliths into independent services — no rewrite, no downtime window. 12+ years on JVM systems, 4,900+ hours on Upwork.
WHAT YOU GET
• One capability extracted into its own Spring Boot service
• Versioned API contract; monolith updated to call it
• Data separation plan and CDC sync for a safe cutover
• Integration tests covering the new boundary
• Containerised build and a deploy runbook your team can run
• Architecture decision record — what I chose and rejected
HOW IT RUNS
Week 1 — I read the codebase and return an extraction plan plus the risks. If you picked the wrong capability first, I'll say so.
Weeks 2-3 — extraction, tests, cutover behind a feature flag.
Final days — runbook, handover call, ADR.
WHAT I WON'T DO
Extract from a codebase with no tests and no downtime window and call that safe. If that's you, we build a characterisation harness first — and I'll say so up front, not in week three.
Before ordering, send your Java and Spring Boot versions and a rough LOC count.
I extract bounded contexts out of Java/Spring Boot monoliths into independent services — no rewrite, no downtime window. 12+ years on JVM systems, 4,900+ hours on Upwork.
WHAT YOU GET
• One capability extracted into its own Spring Boot service
• Versioned API contract; monolith updated to call it
• Data separation plan and CDC sync for a safe cutover
• Integration tests covering the new boundary
• Containerised build and a deploy runbook your team can run
• Architecture decision record — what I chose and rejected
HOW IT RUNS
Week 1 — I read the codebase and return an extraction plan plus the risks. If you picked the wrong capability first, I'll say so.
Weeks 2-3 — extraction, tests, cutover behind a feature flag.
Final days — runbook, handover call, ADR.
WHAT I WON'T DO
Extract from a codebase with no tests and no downtime window and call that safe. If that's you, we build a characterisation harness first — and I'll say so up front, not in week three.
Before ordering, send your Java and Spring Boot versions and a rough LOC count.
Programming Languages
Java, TypeScript, KotlinCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$2,500
|
Standard
$4,800
|
Advanced
$9,500
|
|---|---|---|---|
| Delivery Time | 21 days | 30 days | 45 days |
Number of Revisions | 2 | 3 | 4 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$750 - $1,500
Additional Revision
+$250Frequently asked questions
15 reviews
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TW
Tobias W.
May 25, 2026
Senior Frontend Developer (React/TypeScript)
Amit was a pleasure to work with. He understood the requirements quickly, asked the right questions upfront, His attention to detail, professionalism really stood out.
He was patient with revisions and proactive in suggesting improvements. I'd recommend him without hesitation.
He was patient with revisions and proactive in suggesting improvements. I'd recommend him without hesitation.
BD
Barry D.
Feb 13, 2026
Java Application Support Development
BL
Benoit L.
Sep 22, 2025
Backend Engineer (Java / Spring Boot / API Integrations)
Amit delivered good work on this development project and I enjoyed working with him. His communication was top-notch, he met all deadlines, and his skills were reasonably strong.
YG
Yoab G.
Jan 3, 2025
Java with Spring Boot Developer (Experienced)
HS
Hiren S.
Apr 26, 2024
Strong spring boot developer
Amit is strong backend developer. Was happy with the performance and to the point discussion with him. Will be rehiring him for future development.
About Amit
Java & Spring Boot Architect | SaaS Backends | AI/LLM Integration
82%
Job Success
Jaipur, India - 9:50 pm local time
WHAT I ACTUALLY DO
- Spring Boot modernisation — monolith extraction, microservices, performance and cost work
- AI/LLM integration into existing backends — RAG pipelines, retrieval, workflow automation
- SaaS platform builds — multi-tenant, subscription-ready, greenfield or on an existing codebase
- API design — REST and GraphQL, versioned, documented, production-grade
- Enterprise workflow and ITSM — ticketing, service management, ServiceNow integration
CAREER DELIVERY
- Financial reconciliation engine for a top-10 US custody bank — 2M+ transactions/day, reconciliation time down ~60%
- SaaS bookkeeping platform scaled to 10,000+ users, later acquired
- Microservices backend for a cybersecurity SaaS serving 500+ enterprise clients
- ITSM workflow automation — ticket resolution time down ~40% across three service desks
STACK
Backend — Java, Spring Boot, Spring Security, Microservices, REST, GraphQL, Node.js, NestJS
Frontend — React, Next.js, TypeScript, Tailwind
AI — OpenAI API, Claude API, RAG, LLM integration, workflow automation
Cloud — AWS, Azure, GCP, Docker, Kubernetes, Terraform, GitHub Actions, CI/CD
Data — PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch
HOW I WORK
Written tradeoff notes before code. Architecture decisions documented as ADRs. Weekly demos. I flag the expensive parts of your idea early, before you've paid for them — and I'll tell you when I think you've picked the wrong first problem to solve.
WHO I'M NOT FOR
I'm not the right fit for WordPress, Shopify or template sites, and I don't take work where the deciding factor is the lowest bid. If you need a senior pair of hands to own architecture decisions and defend them, we'll work well together.
FIRST MESSAGE
Send me your stack and the one thing that keeps breaking. I'll tell you in the first reply whether I'm the right call.
Steps for completing your project
After purchasing the project, send requirements so Amit can start the project.
Delivery time starts when Amit receives requirements from you.
Amit works on your project following the steps below.
Revisions may occur after the delivery date.
Codebase review
I read the monolith and map the service boundaries
Extraction plan
Extraction plan and risk list delivered for your sign-off