You will get a backend audit and fix plan for your AI-generated app
Project details
You will get a professional audit of your backend — every security gap, performance issue, and architectural problem found, prioritized, and explained with concrete fixes.
I built payment systems at Santander Bank and know what production-ready actually means. Whether your app was built with Lovable, Bolt, Cursor, or by hand, I check the things AI gets wrong most often: hardcoded secrets, missing validation, broken auth, and queries that crash under real load.
You get a clear report, not vague best practices. Every issue comes with the exact file, line, and what to change.
I built payment systems at Santander Bank and know what production-ready actually means. Whether your app was built with Lovable, Bolt, Cursor, or by hand, I check the things AI gets wrong most often: hardcoded secrets, missing validation, broken auth, and queries that crash under real load.
You get a clear report, not vague best practices. Every issue comes with the exact file, line, and what to change.
Programming Languages
Python, Java, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$700
|
|---|---|---|---|
| Delivery Time | 3 days | 6 days | 12 days |
Number of Revisions | 0 | 1 | 2 |
Number of Pages | 1 | 1 | 1 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $150
Additional Revision
+$25
Implement all fixes
(+ 7 Days)
+$300
Database optimization
(+ 3 Days)
+$150Frequently asked questions
About Volodymyr
Payment & API Backend Engineer | Java, Spring Boot, Ex-Banking
Alicante, Spain - 7:45 am local time
I specialize in backend systems where failure means lost revenue: payment processing, API integrations, and microservice architectures for SaaS products and growing startups.
What I've shipped:
→ Santander Bank: Built instant payment features that cut transaction processing time by 12%, coordinating 8 cross-functional teams across 4 releases
→ IoT (Friendly Technologies): Decomposed a legacy monolith into 8 Spring Boot microservices - deployment time down 60%, test coverage up to 80%
→ Mobile Platform (Simbio): Architected a booking backend handling 500+ daily transactions with real-time WebSocket chat, reducing server response times by 35%
→ Workflow Automation: Integrated Flowable BPMN into enterprise systems, cutting 40% of manual process steps
How I work: I take your requirements, ask the right questions upfront, deliver clean code with tests, and communicate progress without you having to chase me. Available 10–30 hrs/week with EU timezone overlap.
Stack: Java 8–25 · Spring Boot · PostgreSQL · Docker · Kubernetes · AWS (ECS, RDS, S3) · Kafka · RabbitMQ · Stripe API · Supabase · GitHub Actions
Message me with a brief description of your project - I'll reply with a specific plan of how I'd approach it, not a generic pitch.
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.
Codebase review
I clone your project, map the architecture, and systematically check for security, performance, and structural issues across the entire backend.
Audit report
You get a written report with every issue categorized as Critical, Should Fix, or Nice to Have. Each item includes the specific location in code and a concrete fix recommendation.