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Backend API Development|FastAPI & Spring

$15/hr Starting at $25

Service: 

  • REST API development using FastAPI or Spring Boot Clean, well-structured endpoints with proper request/response models and authentication. 
  • Fixing broken or slow backends Debugging API errors, crashes, misconfigurations, and performance issues in existing systems. 
  • PostgreSQL database design & improvements Schema design, migrations, indexing, and query optimization for real-world usage. 
  • Improving existing codebases Refactoring messy or partially implemented backend code to make it easier to understand and extend. 
  • Backend support for frontend teams Making sure APIs are consistent, documented, and easy to consume by web or mobile clients. 


Technologies:

  • Python, FastAPI, SQLAlchemy 
  • Java, Spring Boot, Spring Data JPA 
  • PostgreSQL (schema design, migrations, indexing) 
  • REST / JSON APIs 
  • JWT-based authentication 
  • Docker 
  • CI workflows and environment setup 


How I work: 

  • We agree on clear scope and expectations before coding starts 
  • I break work into small, reviewable milestones 
  • I write clean, readable code and explain decisions when needed 
  • I communicate clearly and give regular progress updates 


I’m available for API development, backend debugging, database work and short focused tasks where you need a reliable developer to move things forward without unnecessary complexity. If you need a backend that works predictably and is easy to build on, feel free to invite me. I’ll review your requirements and suggest a clear next step.

About

$15/hr Ongoing

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Service: 

  • REST API development using FastAPI or Spring Boot Clean, well-structured endpoints with proper request/response models and authentication. 
  • Fixing broken or slow backends Debugging API errors, crashes, misconfigurations, and performance issues in existing systems. 
  • PostgreSQL database design & improvements Schema design, migrations, indexing, and query optimization for real-world usage. 
  • Improving existing codebases Refactoring messy or partially implemented backend code to make it easier to understand and extend. 
  • Backend support for frontend teams Making sure APIs are consistent, documented, and easy to consume by web or mobile clients. 


Technologies:

  • Python, FastAPI, SQLAlchemy 
  • Java, Spring Boot, Spring Data JPA 
  • PostgreSQL (schema design, migrations, indexing) 
  • REST / JSON APIs 
  • JWT-based authentication 
  • Docker 
  • CI workflows and environment setup 


How I work: 

  • We agree on clear scope and expectations before coding starts 
  • I break work into small, reviewable milestones 
  • I write clean, readable code and explain decisions when needed 
  • I communicate clearly and give regular progress updates 


I’m available for API development, backend debugging, database work and short focused tasks where you need a reliable developer to move things forward without unnecessary complexity. If you need a backend that works predictably and is easy to build on, feel free to invite me. I’ll review your requirements and suggest a clear next step.

Skills & Expertise

APIAPI DevelopmentDocker SoftwareJavaJava SpringProgrammingPythonREST APIWeb Scraping

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