Full stack / Backend Engineer – FastAPI, PostgreSQL

Synthlane Technologies Private Limited; Gurgaon; On-site; INR 1,800,000 - 3,000,000; Full time

Job summary

Synthlane Technologies Private Limited is seeking a Full Stack/Backend Engineer to design reliable backend services, data pipelines, and scalable APIs. You will collaborate with product, frontend, and data teams to optimize databases and deliver data-driven applications.

Responsibilities include building REST APIs, implementing data workflows, and ensuring production stability while applying best practices in coding and debugging.

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 with Snowflake for data storage and analytics workloads.
• Understanding of Data Engineering concepts, ETL/ELT, data pipelines and modelling.
• 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.

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.
• Work with Snowflake for data storage, transformation, querying, and analytics workloads.
• Integrate backend applications with databases, third-party services, and data platforms.
• Perform debugging, root-cause analysis, and performance optimization.
• Monitor application and data pipeline reliability and troubleshoot production issues.
• 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.

Skills

Python

React.js

FastAPI

PostgreSQL

Snowflake

Data Engineering

REST APIs

Debugging

Backend architecture

Git

Tools

Docker

Airflow

dbt

Kafka

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, Snowflake, data engineering workflows, 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.
  
• Work with Snowflake for data storage, transformation, querying, and analytics workloads.
• Integrate backend applications with databases, third-party services, and data platforms.
• Perform debugging, root-cause analysis, and performance optimization.
  
• Monitor application and data pipeline reliability and troubleshoot production issues.
  
• 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.
  

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 working with Snowflake.
  
• Understanding of Data Engineering concepts, including ETL/ELT, data pipelines, transformations, and data modelling.
  
• 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.
  
• Experience with orchestration/data tools such as Airflow, dbt, Kafka, or similar technologies.
  
• Familiarity with CI/CD pipelines.
  
• Experience with application monitoring and logging tools.
  
• Understanding of asynchronous programming and distributed systems.