Senior Backend Engineer

1 day ago

Mumbai Pune, India Infinityquest It Services Full time ₹ 12,00,000 - ₹ 24,00,000 per year

Role & responsibilities

Job Title: Senior Backend Engineer (Python/FastAPI 6 to 10 Years Experience)

Location: Mumbai/Pune - Hybrid

About the Role:

We are looking for a Senior Backend Engineer with 6–9 years of experience to join our fast-paced and technically advanced platform team. In this role, you will design, build, and scale backend APIs and data infrastructure that power analytical tools and real-time insights for internal and external users. You will work closely with product, data, and frontend teams to ensure seamless integration and high performance across the stack.

This position emphasizes Python-based API development, efficient time-series data management, and API-first platform architecture, with cloud deployment experience and a strong foundation in authentication and infrastructure.

Skills

Must Have (Core Backend Skills):

  • Python (FastAPI) – API development
  • SQL – Writing efficient queries and schema design
  • TimescaleDB / PostgreSQL – Handling time-series data
  • Airflow / dbt – Data pipeline orchestration
  • Pandas / NumPy – Data processing and analysis
  • OpenAPI / Swagger – API contract documentation
  • API best practices – Versioning, pagination, deterministic responses
  • Auth0 / JWT – Authentication and authorization
  • RBAC – Role-based access control at the API layer
  • AWS Lambda / ECS / API Gateway – Cloud deployment
  • Terraform – Infrastructure as code

Good to Have (Frontend / Visualization Skills):

  • React / – Integrate APIs into frontend dashboards
  • Visualization libraries – e.g., , , Plotly
  • Component testing – Frontend unit and integration testing
  • MVP delivery – Ability to rapidly prototype frontend interfaces

Key Responsibilities:

  • Design, develop, and maintain high-performance backend APIs using Python and FastAPI.
  • Define and manage database schemas and queries optimized for time-series and analytical workloads (TimescaleDB/PostgreSQL).
  • Build and orchestrate data pipelines using tools like Airflow, dbt, and libraries such as Pandas/NumPy.
  • Implement and maintain API contracts using OpenAPI/Swagger with attention to versioning, pagination, and metadata.
  • Integrate and enforce authentication and authorization (Auth0, JWT, RBAC) at the API layer.
  • Work with AWS services (Lambda, ECS, API Gateway) and infrastructure as code tools like Terraform for cloud deployment.
  • Collaborate with frontend and product teams to expose backend functionality through dashboards and data visualizations.
  • Contribute to performance tuning, monitoring, and continuous improvement of platform architecture.

Required Qualifications:

  • 6–10 years of experience in software engineering with a focus on backend systems and API development.
  • Proven experience in building and maintaining Python-based APIs using FastAPI or similar frameworks.
  • Solid understanding of SQL and experience with PostgreSQL/TimescaleDB.
  • Strong knowledge of time-series data design and optimization.
  • Experience in building and managing data pipelines using Airflow, dbt, or equivalent tools.
  • Familiarity with API standards and documentation practices (OpenAPI, Swagger).
  • Experience with auth systems like Auth0, JWT, and role-based access control.
  • Exposure to cloud infrastructure (AWS Lambda, ECS, API Gateway) and Terraform.
  • Strong problem-solving skills, attention to detail, and ability to work independently in a distributed environment.

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