You will get REST API integration in Java / Spring Boot
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Top Rated

Project details
You will get a 3rd party REST API integration in Java, Spring Boot
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Programming Languages
JavaWhat's included
| Service Tiers |
Starter
$100
|
Standard
$200
|
Advanced
$300
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 4 days |
Number of Revisions | 1 | 1 | 1 |
Number of Pages | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $100
46 reviews
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JQ
Jose Q.
Jan 1, 2026
Image Processing Webapp Development
JQ
Jose Q.
Oct 26, 2025
Senior Full‑Stack Developer (Milestone‑Based, Build in Public)
OM
Oliver M.
Sep 26, 2025
Chrome Plugin extensions
OM
Oliver M.
Aug 4, 2025
Updates for Chrome-Plugin
It was a pleasure working together. The job was completed 10/10, on time and exactly as agreed. Communication was fast and always clear.
With best regards from Germany,
Oliver
With best regards from Germany,
Oliver
OT
Omar T.
Jul 11, 2025
Call to discuss Java project structure
About Volodymyr
Fractional CTO | SaaS Architect | Chrome Extension Developer
100%
Job Success
Verba, Ukraine - 10:13 am local time
I'm a fractional CTO and solutions architect with 13+ years of hands-on software development experience, helping founders turn product ideas into scalable SaaS businesses - a fractional CMO colleague often refers marketing-only leads my way once the product itself needs a solutions architect. I've helped take SaaS platforms from 0 to $85K MRR and $1M+ ARR. AWS Certified Solutions Architect - Professional, 100% Job Success, Top Rated, $100K+ earned.
Why Companies Hire Me
As a fractional CTO, I start every engagement with a codebase audit first. As a technical architect and solutions architect, I map the system first. As a virtual CTO with software architect experience, I've rebuilt 20+ saas developer projects dozens of startups still run in production. Chrome extension developer and full stack developer work get the same rigor as any MVP development engagement.
What I Deliver
- Fractional CTO: 150+ hours of technical team lead work - strategy, architecture reviews, technical due diligence for founders who need a CTO consultant, not a full-time hire.
- SaaS Development: 60+ saas developer and software developer builds. Full stack developer work with Stripe payments and multi-tenant architecture.
- Chrome Extensions: 25+ Chrome extension developer projects - Google Chrome extension builds, Manifest V3, Stripe-connected extensions.
- AWS & Infrastructure: 30+ projects using AWS Architect and AWS developer skills, Docker, Kubernetes, REST APIs.
- MVP Builds: 15+ MVP development sprints, validated before a full software architect rebuild.
Fractional CTO work means the architecture stays consistent even as the team grows: CTO in, virtual CTO compatible, technical architect intact, solutions architect and software architect parity protected.
My Process
Phase one: technical audit - codebase, architecture, roadmap. Phase two: fractional CTO or technical architect handoff. Phase three: saas developer build - APIs, authentication, AWS. Phase four: Chrome extension developer work, launch. Every CTO, virtual CTO, solutions architect, and software architect engagement follows this, with software developer, MVP development, AWS developer, and CTO consultant sign-off included.
Results
SaaS Startup: fractional CTO engagement took a product from 0 to $85K MRR in 14 months.
Chrome Extension: Chrome extension developer build hit 8,000+ installs; MVP development cycle ran 5 weeks to Chrome Web Store approval.
Start Here
Send your product idea or codebase - reply fast. Fractional CTO, technical architect, Chrome extension developer. AWS or Kubernetes - whichever fits.
Everything I Cover
▪ Fractional CTO & Leadership: fractional CTO and technical architect builds, technical due diligence. Virtual CTO, technical team lead, and CTO consultant reviews follow the same standard.
▪ Architecture: solutions architect output for software architect parity, system architect bridged in.
▪ SaaS & MVP: saas developer and MVP development built once. Software developer design doesn't stop at launch.
▪ Chrome Extensions: Chrome extension developer with Google Chrome extension specs, full stack developer building the frontend.
▪ AWS: AWS architect and AWS developer validated before a solutions architect rebuild, AWS architect sign-off alongside technical architect, software architect, and MVP development review.
Founders sometimes ask whether they need a fractional CTO or fractional CMO first - fractional CTO and technical team lead decisions come before fractional CMO marketing spend makes sense, with a fractional CMO brought in only once the product side is solid, not before a fractional CMO has anything real to market. I've worked as virtual CTO alongside a fractional cfo on runway planning, plus co founder and technical co founder engagements.
Every project closes with a second review: saas developer and software developer QA, full stack developer sign-off, AWS architect and AWS developer checks, and a final CTO consultant pass, with virtual cto oversight and technical team lead alignment - the same saas developer, software developer, full stack developer, aws architect, aws developer, CTO consultant, virtual CTO, and technical team lead standard on retainer, covering TypeScript, JavaScript, PostgreSQL, and Docker.
Usually, a technical architect audit and software architect review come first, then Chrome extension developer or MVP development work once the roadmap is clear - AWS architect and AWS developer expertise brought in as needed, with a technical team lead lens on hiring and a CTO consultant view on whether a fractional CMO hire matters more than another engineer right now.
If you're building a SaaS product, need technical leadership without a full-time CTO hire, or want to launch or scale a Chrome extension - send me what you're working on, and I'll tell you what I'd do first.
Steps for completing your project
After purchasing the project, send requirements so Volodymyr can start the project.
Delivery time starts when Volodymyr receives requirements from you.
Volodymyr works on your project following the steps below.
Revisions may occur after the delivery date.
check docs of 3rd party REST API
get access key of 3rd party API