You will get Production-Ready Spring Boot REST API Development (Java 11/17)
Project details
š Production-Ready Spring Boot REST APIs ā Built by a Senior Java Engineer
Whether you're launching a SaaS MVP, modernising a legacy system, or scaling an existing platform, I build secure, scalable, and maintainable Spring Boot REST APIs designed for production use.
āā WHAT YOU GET āā
ā RESTful APIs with Java 11/17 and Spring Boot
ā Clean layered architecture (Controller, Service, Repository)
ā JWT/OAuth2 authentication and role-based access control
ā Database integration with PostgreSQL, MySQL, MariaDB, or DynamoDB
ā Input validation, structured exception handling, and logging
ā Swagger/OpenAPI documentation
ā Unit and integration testing with JUnit, Mockito, and Testcontainers
ā Docker-ready deployment setup
ā AWS deployment and CI/CD pipelines (Premium Package)
ā Clean, documented, maintainable code following best practices
āā TECH STACK āā
ā¢ Java 8/11/17, Kotlin
ā¢ Spring Boot, Spring Security, Spring MVC, Hibernate, JPA, Micronaut
ā¢ PostgreSQL, MySQL, MariaDB, DynamoDB, Elasticsearch
ā¢ AWS (EC2, ECS, RDS, S3, Lambda)
ā¢ Docker, Kubernetes, Jenkins, GitHub Actions
ā¢ Apache Kafka, JMS
ā¢ JUnit, Mockito, Testcontainers
Whether you're launching a SaaS MVP, modernising a legacy system, or scaling an existing platform, I build secure, scalable, and maintainable Spring Boot REST APIs designed for production use.
āā WHAT YOU GET āā
ā RESTful APIs with Java 11/17 and Spring Boot
ā Clean layered architecture (Controller, Service, Repository)
ā JWT/OAuth2 authentication and role-based access control
ā Database integration with PostgreSQL, MySQL, MariaDB, or DynamoDB
ā Input validation, structured exception handling, and logging
ā Swagger/OpenAPI documentation
ā Unit and integration testing with JUnit, Mockito, and Testcontainers
ā Docker-ready deployment setup
ā AWS deployment and CI/CD pipelines (Premium Package)
ā Clean, documented, maintainable code following best practices
āā TECH STACK āā
ā¢ Java 8/11/17, Kotlin
ā¢ Spring Boot, Spring Security, Spring MVC, Hibernate, JPA, Micronaut
ā¢ PostgreSQL, MySQL, MariaDB, DynamoDB, Elasticsearch
ā¢ AWS (EC2, ECS, RDS, S3, Lambda)
ā¢ Docker, Kubernetes, Jenkins, GitHub Actions
ā¢ Apache Kafka, JMS
ā¢ JUnit, Mockito, Testcontainers
Programming Languages
Python, Java, KotlinCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$800
|
Standard
$1,500
|
Advanced
$3,000
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 21 days |
Number of Revisions | 2 | 4 | Unlimited |
Number of Pages | 5 | 15 | |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
About Muhammad
Senior Java & Spring Boot Developer | FinTech, E-Invoicing and ERPs
Lahore, PakistanĀ - 7:28 am local time
I help FinTech startups, banks, and ERP companies ship secure, scalable backend
systems ā without the typical delays, bugs, or compliance headaches.
With 6+ years of hands-on experience, I've built production systems trusted by
millions of users at some of the most demanding companies in the world:
š¦ BILL (US FinTech) ā Building APAR onboarding flows in Java 17 + Micronaut
š¦ United Overseas Bank (UOB) ā Personal Internet Banking serving 8M+ customers
š¦ Algoras ā ZATCA-compliant E-Invoicing platform (100% regulatory compliance)
š¦ i2c Inc. ā Multithreaded financial computation engines for payment institutions
āā What I Build For Clients āā
ā Scalable backend systems with Java 8/11/17, Spring Boot, Micronaut
ā Microservices & RESTful APIs (clean, documented, production-ready)
ā FinTech & banking integrations (payments, KYC, secure transactions)
ā E-Invoicing & compliance systems (ZATCA, Peppol, regulatory-ready)
ā ERP module development (Sales, Purchase, Invoicing automation)
ā High-performance multithreaded services (30%+ efficiency gains)
ā Event-driven architecture with Kafka, JMS, and async processing
āā My Tech Stack āā
ā¢ Languages: Java 8 / 11 / 17, Kotlin
ā¢ Frameworks: Spring Boot, Spring MVC, Micronaut, Hibernate, JPA
ā¢ Databases: PostgreSQL, MariaDB, DynamoDB, Elasticsearch, Informix
ā¢ Cloud & DevOps: AWS, Docker, Kubernetes, Jenkins, CI/CD
ā¢ Messaging: Apache Kafka, JMS
ā¢ Testing: JUnit, Mockito, Integration Testing
āā Results I've Delivered āā
š 100% ZATCA regulatory compliance for E-Invoicing across multiple businesses
š 25% operational efficiency boost through ERP automation
š 30% reduction in manual processing via multithreaded financial calculators
š Backend features for a banking platform serving 8M+ retail customers
š End-to-end Supplier Hub with RBAC, validation engine, and bulk import
āā Why Clients Work With Me āā
ā I treat your codebase like my own ā quality, ownership, accountability
ā Clear daily communication, no surprises, no missed deadlines
ā Fluent English, comfortable with both async and sync collaboration
ā Proven track record in regulated environments (banking, compliance, FinTech)
ā I write clean, maintainable code that your team can build on for years
āā Availability āā
š¢ Currently accepting 1-2 new clients
š¢ Available 30+ hours/week
š¢ Flexible across US, EU, and APAC time zones
If you're building something serious in FinTech, banking, or e-invoicing ā
or you need a senior Java engineer who ships production-grade systems ā
let's talk. Send me a message with your project details and I'll respond within hours.
Steps for completing your project
After purchasing the project, send requirements so Muhammad can start the project.
Delivery time starts when Muhammad receives requirements from you.
Muhammad works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Discovery & API Scope
We align on your project goals, endpoints, authentication, database, and integrations. I confirm tech stack, deliverables, and constraints, then share a detailed API specification and timeline for your approval.
Architecture Design & Database Schema
I design the layered architecture (Controller ā Service ā Repository) and build the database schema with migration scripts. You receive an ER diagram and architecture overview to review before any production code is written.