Full stack / Backend Engineer – FastAPI, PostgreSQL

Synthlane Technologies Private Limited; Gurugram District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Synthlane Technologies Private Limited is seeking a Full Stack/Backend Engineer to design and scale backend services using Python, FastAPI, and PostgreSQL, while building responsive frontend components with React.js.

You will collaborate with product and data teams to optimize data pipelines, debug production issues, and implement robust API designs. The role emphasizes code quality, documentation, and scalable architecture.

Qualifications

• Strong proficiency in Python.
• Proficiency in React.js.
• Hands-on experience with FastAPI or similar Python web frameworks.
• Strong knowledge of PostgreSQL, SQL, database design, indexing, and query optimization.
• Experience building and integrating REST APIs.
• Strong debugging and troubleshooting skills.

Responsibilities

• Design, develop, and maintain scalable backend services using Python and FastAPI.
• Write component based frontend apps using React.js + Vite.
• Build and maintain REST APIs and backend integrations.
• Design efficient database schemas and write optimized queries in PostgreSQL.
• Integrate backend applications with databases, third-party services, and data platforms.
• Perform debugging, root-cause analysis, and performance optimization.

Skills

Python

React.js

FastAPI

PostgreSQL

REST APIs

Debugging

Git

Tools

AWS

Azure

GCP

Docker

CI/CD

Job description

Synthlane Technologies Private Limited | Full time

We are looking for a Full Stack/Backend Engineer with strong experience in building scalable backend systems, APIs, and data-driven applications. The ideal candidate should be comfortable working with Python/FastAPI, PostgreSQL, React.js and production debugging.

You will work closely with product, frontend, and data teams to design reliable backend services, optimize database performance, build data pipelines, and troubleshoot issues across applications and infrastructure.

Key Responsibilities

• Design, develop, and maintain scalable backend services using Python and FastAPI.
  
• Write component based frontend apps using React.js + Vite.
  
• Build and maintain REST APIs and backend integrations.
  
• Design efficient database schemas and write optimized queries in PostgreSQL.
• Integrate backend applications with databases, third-party services, and data platforms.
• Perform debugging, root-cause analysis, and performance optimization.
• Write clean, maintainable, testable, and well-documented code.
  
• Collaborate with engineering and product teams on architecture and technical solutions.
  
• Participate in code reviews and follow backend development best practices.
  

Requirements

Required Skills

• Strong proficiency in Python.
  
• Proficiency in React.js
  
• Hands-on experience with FastAPI or similar Python web frameworks.
  
• Strong knowledge of PostgreSQL, SQL, database design, indexing, and query optimization.
  
• Experience building and integrating REST APIs.
  
• Strong debugging and troubleshooting skills.
  
• Ability to diagnose application, database, API, and data-related production issues.
  
• Understanding of backend architecture, scalability, and performance optimization.
  
• Familiarity with Git and version-control workflows.
  

Good to Have

• Experience with AWS, Azure, or GCP.
  
• Knowledge of Docker and containerized applications.
• Familiarity with CI/CD pipelines.
  
• Experience with application monitoring and logging tools.
  
• Understanding of asynchronous programming and distributed systems.
  

Core Skills

Python | FastAPI | React.js | PostgreSQL | API Design | HLD | LLD | Data Structures | REST APIs | Debugging | Performance Optimization | Database Design