You will get 📦 Fix Spring Boot Bug, CORS, or API Issue – $15
Project details
You will get a clean and efficient fix for any Spring Boot bug or API issue in your application. With over 1.4 years of backend development experience in a professional environment, I specialize in building and debugging REST APIs, securing applications with JWT/OAuth2, and optimizing database queries using JPA/Hibernate. I’ve solved 2200+ programming problems and participated in 400+ coding contests, including ICPC. I care about clean code, fast turnaround, and reliable delivery. The work I provide is professional, scalable, and 100% original.
Programming Languages
JavaScript, Java, KotlinCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$15
|
Standard
$35
|
Advanced
$60
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 3 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$5 - $10
Fix additional API issue
(+ 1 Day)
+$10About Sahenul
Spring Boot Backend Developer | REST APIs | Bug Fixing & Optimization
Dhaka, Bangladesh - 10:42 am local time
At my current role at Anwar Technologies, I’ve:
- Built secure, production-ready REST APIs using Spring Boot, Hibernate, and MySQL/PostgreSQL
- Integrated OAuth2 logins (Google, GitHub) and JWT security
- Added WebSocket-based real-time messaging features
- Used native SQL for complex queries and performance optimization
I’ve also solved 2200+ algorithm problems and participated in 300+ programming contests, including 3x ICPC regionals. My problem-solving skills make me quick and reliable in debugging and fixing complex backend issues.
🔹 I can help you with:
- Spring Boot bug fixing and API enhancements
- Authentication (JWT, OAuth2) setup
- Database query optimization and data modeling
- Spring Security issues
If you're looking for a backend developer who can build robust Spring Boot APIs, fix bugs fast, and handle real-time messaging (WebSocket), let’s talk. I’ll help you deliver your project reliably and on time.
Steps for completing your project
After purchasing the project, send requirements so Sahenul can start the project.
Delivery time starts when Sahenul receives requirements from you.
Sahenul works on your project following the steps below.
Revisions may occur after the delivery date.
Review the Issue
I will go through your problem description, examine any code or logs you provide, and identify the exact cause of the issue.
Fix the Bug / Implement Solution
I will fix the problem in your Spring Boot project using best practices, ensuring your application functions as expected.