You will get Java Spring Boot REST APIs for your backend system
Project details
Need secure and scalable Java Spring Boot REST APIs for your backend system?
I will help you build production-ready backend APIs using Java, Spring Boot, REST API architecture, database integration, validation, error handling, and clean API contracts.
This service is ideal for SaaS platforms, fintech systems, enterprise applications, admin dashboards, mobile app backends, and business systems that need reliable backend logic.
Services may include REST API development, backend feature development, database integration, authentication flow, API debugging, API optimization, error handling, and documentation.
I will help you build production-ready backend APIs using Java, Spring Boot, REST API architecture, database integration, validation, error handling, and clean API contracts.
This service is ideal for SaaS platforms, fintech systems, enterprise applications, admin dashboards, mobile app backends, and business systems that need reliable backend logic.
Services may include REST API development, backend feature development, database integration, authentication flow, API debugging, API optimization, error handling, and documentation.
What's included
| Service Tiers |
Starter
$10
|
Standard
$15
|
Advanced
$20
|
|---|---|---|---|
| Delivery Time | 1 day | 1 day | 2 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
About Ali
Senior Java Backend Developer | Spring Boot | Fintech & Payments
Lahore, Pakistan - 10:07 am local time
I build and modernize Java/Spring Boot systems for fintech and enterprise products where performance and reliability are critical.
• What I Do:
With 9+ years of backend engineering experience, including roles as a Principal Software Engineer and Technical Team Lead, I work on backend systems where reliability, performance, clean architecture, and maintainability matter.
I can take ownership from understanding requirements and designing the technical approach through development, integration, optimization, troubleshooting, and production delivery.
Services:
• Java & Spring Boot Backend Development
• REST API Development & API Integration
• Microservices Architecture
• Fintech & Payment System Development
• Mobile Wallet & Banking Integrations
• ISO 8583 Payment Workflows
• RabbitMQ & Event-Driven Systems
• Legacy System Modernization
• Backend & Database Performance Optimization
• Production Debugging & System Stabilization
• AI Integration, RAG & Backend Automation
Tools & Technologies:
• Backend: Java, Spring Boot, Spring Framework, Spring Security, Hibernate/JPA
• Architecture: REST APIs, Microservices, RabbitMQ, Event-Driven Architecture
• Databases: PostgreSQL, Microsoft SQL Server, MySQL, Oracle
• Cloud & DevOps: AWS, Docker, CI/CD, Liquibase
• AI & Automation: Spring AI, OpenAI API, RAG, n8n
• Experience & Results:
My experience includes fintech, banking, insurance, payments, wallets, e-commerce, and enterprise systems.
A few examples:
• Scaled payment processing from 1 TPS to 200 TPS using Java, Spring Boot, and RabbitMQ
• Reduced insurance workflow processing from 4–5 hours to 30–40 minutes for 1,000+ records through SQL optimization and event-driven architecture
• Helped modernize a legacy AS400/COBOL platform into Java-based microservices
• Built payment APIs, wallet transaction workflows, banking integrations, and ISO 8583-based systems
• Worked directly with product and business stakeholders on technical requirements and delivery
Why Work With Me:
• I don’t just complete development tickets.
• I focus on understanding how the system should work, identifying technical risks early, choosing practical solutions, communicating clearly with stakeholders, and building backend systems that other developers can maintain and extend.
My goal is to deliver software that works reliably in production, not just code that passes a demo.
If you need a Java Backend Developer or Spring Boot Engineer for a fintech platform, payment integration, REST API, microservices project, performance issue, or legacy backend modernization, send me a message with what you’re building or where your current system is stuck.
Steps for completing your project
After purchasing the project, send requirements so Ali can start the project.
Delivery time starts when Ali receives requirements from you.
Ali works on your project following the steps below.
Revisions may occur after the delivery date.
Review Requirements and Build Spring Boot Back end APIs