I will build scalable java spring boot applications and rest apis

H
hasannawaz433
H
hasannawaz433
Hasan Nawaz
build scalable java spring boot applications and rest apis
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About this gig

Are you looking for an experienced Java developer to build, optimize, or maintain your application?

I am a Senior Java Engineer with expertise in designing and developing high-performance, scalable, and secure Java applications for startups, businesses, and enterprise clients.

Whether you need a custom Java application, REST API, backend system, microservice architecture, or bug fixing, I can deliver clean, maintainable, and production-ready code following industry best practices.


My Services Include:

Custom Java Application Development

Spring Boot Application Development

RESTful API Design & Development

Microservices Architecture

Backend Development

Database Design & Integration

Java Bug Fixing & Troubleshooting

Code Refactoring & Performance Optimization

API Integration (Third-Party Services)

Authentication & Authorization (JWT, OAuth2)

Enterprise Application Development

Legacy System Modernization

Unit & Integration Testing



Why Choose Me?

Senior Java Engineering Experience

Clean, Maintainable, and Well-Documented Code

Scalable and Secure Architecture

Fast Communication

On-Time Delivery

Quality Assurance & Testing

Long-Term Support Available

  • Programming language

    • Java

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Security
    • Design
    • Databases

  • Frontend framework

    • Bootstrap
    • Next.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Django
    • FastAPI
    • NestJS
    • Node.js
    • Spring

  • AI & low/no code builders

    • Co.dev
    • Cursor
    • Zoho Creator

Get to know Hasan Nawaz

Hasan Nawaz

Software Engineer II

  • FromPakistan
  • Member sinceOct 2022
  • Avg. response time1 hour

  • Languages

    Punjabi, English, Arabic, Turkish
Experienced Java Engineer, n8n Automation Expert, and Playwright Developer with a strong background in building scalable backend applications, workflow automations, API integrations, and test automation solutions. I specialize in Java, Spring Boot, REST APIs, Microservices, n8n workflows, and Playwright testing. I focus on delivering clean, efficient, and reliable solutions that improve performance, automate business processes, and save time. Committed to quality, clear communication, and on-time delivery, I help businesses turn ideas into successful software products

My Portfolio

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