You will get API Developer | REST & GraphQL APIs, Third-Party Integrations
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Project details
Need an efficient API for your application? I specialize in:
✅ Custom API Development (REST & GraphQL)
✅ Third-Party API Integration (Stripe, Twilio, Google Maps, Salesforce, etc.)
✅ Authentication & Security (JWT, OAuth, Firebase Auth)
✅ Performance Optimization & Load Balancing
What I Offer:
✔️ API Design & Implementation
✔️ Secure and Scalable API Architecture
✔️ Payment Gateway & CRM Integrations
✔️ API Documentation & Postman Testing
Let’s integrate powerful APIs into your system! 🔌
✅ Custom API Development (REST & GraphQL)
✅ Third-Party API Integration (Stripe, Twilio, Google Maps, Salesforce, etc.)
✅ Authentication & Security (JWT, OAuth, Firebase Auth)
✅ Performance Optimization & Load Balancing
What I Offer:
✔️ API Design & Implementation
✔️ Secure and Scalable API Architecture
✔️ Payment Gateway & CRM Integrations
✔️ API Documentation & Postman Testing
Let’s integrate powerful APIs into your system! 🔌
Programming Languages
JavaScript, Java, TypeScriptWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$650
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 9 days |
Number of Revisions | 2 | 2 | 3 |
Number of Pages | 3 | 6 | 10 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
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Aug 26, 2025
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Oleksii K.
Jul 19, 2025
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as always, everything is fine
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Tokunbo A.
Jul 16, 2025
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It’s been a pleasure working with him. He’s technically skilled, reliable, and communicates clearly throughout the project. He quickly understands requirements and consistently delivers high-quality, efficient code. A great addition to any team!
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Oleksii K.
Jul 11, 2025
Java SDK Review and Validation
Very satisfied with Adil’s work. Clear communication, thoughtful code review, and professional attitude throughout the project. Would gladly work with him again!
RT
Richard T.
May 26, 2025
Fund Management System Back-End
Adil is one of the quality developer which I have approached for project developments.
He is able to complete his milestones on time or even earlier all the way, and his work done is always adequate with the requirements.
He also has been really helpful for keeping provide us assistance even the Front-End Development is delayed.
He is able to complete his milestones on time or even earlier all the way, and his work done is always adequate with the requirements.
He also has been really helpful for keeping provide us assistance even the Front-End Development is delayed.
About Adil
Senior Java Developer | Spring Boot | Microservices | AWS | REST APIs
100%
Job Success
Mississauga, Canada - 7:26 am local time
I help businesses build scalable, secure, and high performance backend systems that handle growth without slowing down.
Most applications work well in the beginning.
The problems start when traffic increases.
APIs become slow, deployments become risky, and maintaining the code becomes expensive.
That's where I come in.
𝗔𝘀 𝗮 𝗦𝗲𝗻𝗶𝗼𝗿 𝗝𝗮𝘃𝗮 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 𝟭𝟯+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲, I've helped startups and enterprise companies design, build, and optimize backend systems that scale reliably in production.
I am not just a Java Developer who writes code.
I help businesses create backend architectures that support growth, improve performance, and reduce technical debt.
𝗥𝗲𝘀𝘂𝗹𝘁𝘀 𝗜'𝘃𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱
• Built scalable Java Developer solutions serving thousands of daily users with high availability.
• Designed Microservices architectures that reduced deployment risks and improved system reliability.
• Developed Spring Boot applications that improved API response times and backend performance.
• Helped businesses migrate legacy systems into modern Java Developer architectures.
• Delivered production ready backend platforms for startups and enterprise organizations.
Every project starts with a business goal and ends with measurable results.
𝗪𝗵𝗮𝘁 𝗜 𝗗𝗼
𝗝𝗮𝘃𝗮 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
• Custom backend application development
• Enterprise Java solutions
• Legacy application modernization
• Backend performance optimization
• Secure and maintainable architecture
𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
• REST API development
• Spring Security
• Spring Data JPA
• Authentication and authorization
• Scalable backend services
𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲
• Distributed systems design
• Service decomposition
• API Gateway implementation
• Event driven architecture
• System scalability and resilience
𝗔𝗪𝗦 𝗖𝗹𝗼𝘂𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀
• AWS deployment and infrastructure
• EC2, ECS, Lambda
• Cloud architecture design
• Monitoring and optimization
• Cost effective cloud operations
𝗥𝗘𝗦𝗧 𝗔𝗣𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁
• API design and implementation
• Third party integrations
• Payment gateway integration
• Documentation and testing
• Secure API architecture
𝗪𝗵𝗮𝘁 𝗠𝗮𝗸𝗲𝘀 𝗠𝗲 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁
Most Java Developers focus only on writing code.
I focus on the business impact of the software.
𝗕𝗲𝗳𝗼𝗿𝗲 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗮𝗻𝘆𝘁𝗵𝗶𝗻𝗴, 𝗜 𝗮𝘀𝗸:
• Will this architecture still work when traffic grows?
• Can future developers maintain it easily?
• Is it secure?
• Is it optimized for performance?
• Can it scale without major rewrites?
This approach helps clients avoid costly problems later.
𝗪𝗵𝗼 𝗜 𝗪𝗼𝗿𝗸 𝗕𝗲𝘀𝘁 𝗪𝗶𝘁𝗵
• Startups building new SaaS products
• Businesses scaling existing applications
• Companies modernizing legacy Java systems
• Teams adopting Microservices architecture
• Organizations migrating workloads to AWS
• Businesses needing secure and scalable REST APIs
𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀
Java, Spring Boot, Spring Security, Hibernate, JPA, Microservices, AWS, Docker, Kubernetes, REST APIs, Kafka, RabbitMQ, PostgreSQL, MySQL, MongoDB, Redis, Maven, Gradle, Git, CI/CD, Jenkins
𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲
• 13+ years of Java Developer experience
• Clean, maintainable code
• Scalable backend architecture
• Strong communication
• Reliable delivery
• Long term technical thinking
If you're looking for a Java Developer who understands both software engineering and business objectives, let's discuss your project.
Send an invitation and I'll respond within a few hours.
Keywords:
Java Developer, Senior Java Developer, Java Backend Developer, Java Software Engineer, Spring Boot Developer, Spring Boot Expert, Java Application Development, Enterprise Java Developer, Java Web Services, REST API Developer, RESTful API Development, Backend Developer, Backend Engineer, Microservices Developer, Microservices Architecture, Distributed Systems, AWS Developer, AWS Cloud Engineer, Java AWS Developer, Docker, Kubernetes, Kafka, RabbitMQ, Hibernate, JPA, Spring Security, API Integration, Database Design, PostgreSQL, MySQL, MongoDB, Redis, SaaS Backend Development, Scalable Application Development, Cloud Native Applications, Java Consultant, Software Architecture, System Design, Enterprise Application Development, Performance Optimization, CI/CD, Jenkins, Maven, Gradle, Full Stack Java Developer.
Steps for completing your project
After purchasing the project, send requirements so Adil can start the project.
Delivery time starts when Adil receives requirements from you.
Adil works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering