I will fix your spring boot java bugs and errors fast

M
mansoor7196
M
mansoor7196
M.Mansoor
fix your spring boot java bugs and errors fast
Full Screen
fix your spring boot java bugs and errors fast

About this gig

Are you facing bugs, performance issues, API errors, or need new features added to your existing web application?


I will help you fix, develop, optimize, and improve your frontend and backend applications with clean, scalable, and production-ready solutions.


With 3+ years of software development experience, I have worked on SaaS platforms, marketplaces, dashboards, enterprise systems, and complex backend architectures.


Services I provide:


Backend Development

REST API development & fixes

Database issues & optimization

Authentication & security fixes

Payment & third-party API integrations

Performance improvements

Microservices development


Frontend Development

UI bug fixing

Responsive design improvements

API integration

New feature development


Technologies:


Backend:

Java, Spring Boot, Spring MVC, Spring Security, Node.js, Express.js, NestJS, FastAPI


Frontend:

React.js, Angular, JavaScript, TypeScript, Thymeleaf


Database & Tools:

PostgreSQL, MySQL, MongoDB, Redis, Docker, Kafka, Git


Why choose me?


Clean code

Scalable architecture

Professional communication

Long-term support


Let's fix, improve, and scale your application.

  • Programming language

    • Java

  • Expertise

    • Debugging
    • Performance
    • Security
    • Design
    • Databases

  • Frontend framework

    • Angular
    • AngularJS
    • Next.js
    • React.js
    • Vue.js

  • Backend framework

    • Spring

  • AI & low/no code builders

    • Lovable
    • Bolt.new
    • Claude
    • Firebase Studio
    • Base44
    • Co.dev
    • Cursor
    • Softgen
    • Replit

Get to know M.Mansoor

M.Mansoor

AI and Full Stack Engineer, AI Chatbots, LLM Apps, Java Spring Boot, Web Apps

5.0(2)
  • FromPakistan
  • Member sinceApr 2020
  • Avg. response time1 hour
  • Last delivery2 months

  • Languages

    Urdu, English
AI is at the heart of what I build. I create AI agents, RAG chatbots and LLM apps (OpenAI, Gemini, LangChain) that let businesses chat with their own data, plus the web apps, custom software and SaaS backends around them. A major bank and multinational FMCG brands trust my code in production. I ship fast using modern AI coding tools. Stack: Java Spring Boot, Python FastAPI, Node, React, Next.js, Postgres, Qdrant, Docker, AWS. 5.0 rated, 1-hour response. Tell me your idea and I'll turn it into a clear plan, price and timeline.

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