Senior Backend Engineer (Python)

Cashback24x7; India; Remote; INR 7,761,000 - 15,522,000; Part time

Job summary

Cashback24x7 is seeking a Senior Backend Engineer (Python) for a remote contractor role. You will design, develop, and optimize backend APIs using Python and FastAPI, and deploy scalable real-time systems with WebSockets, AWS, and Kubernetes.

You'll collaborate with distributed teams, review legacy code, and maintain thorough documentation to ensure high performance, reliability, and clear cross-team communication in AI-driven projects.

Qualifications

• Expert-level Python backend development experience.
• Deep AWS services experience and cloud deployment.
• Experience building APIs with FastAPI and WebSockets real-time features.
• Knowledge of Kubernetes for container orchestration.
• Understanding of message queues and event-driven architecture.
• Excellent written and verbal communication; able to collaborate remotely.
• Ability to work autonomously in a fast-paced, distributed environment.

Responsibilities

• Design, develop, and optimize robust backend APIs using Python and FastAPI.
• Implement scalable solutions leveraging AWS and Kubernetes.
• Architect and deploy secure real-time systems with WebSockets and queues.
• Collaborate with engineers and stakeholders to deliver technical excellence.
• Review and refactor legacy codebases to improve maintainability.
• Maintain detailed documentation for internal and external teams.
• Champion clear communication across the customer''s team.

Skills

Python

Backend development

AWS

FastAPI

WebSockets

Kubernetes

Message queues

Event-driven

Communication

Autonomy

Tools

FastAPI

Kubernetes

Job description

Job Title:

Senior Backend Engineer (Python)

Job Type:

Contractor

Location:

Remote

Job Summary:

In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input.

Key Responsibilities:

• Design, develop, and optimize robust backend APIs using Python and FastAPI frameworks.
• Implement scalable and efficient solutions leveraging AWS cloud services and Kubernetes orchestration.
• Architect and deploy secure, high-performance real-time systems utilizing WebSockets and message queues.
• Collaborate with other engineers and cross-functional stakeholders to deliver technical excellence and innovative solutions.
• Review and refactor legacy codebases to improve maintainability, performance, and scalability.
• Maintain detailed documentation, ensuring clarity for both internal and external teams.
• Champion written and verbal communication, facilitating clear collaboration across the customer's team.

Required Skills and Qualifications:

• Expert-level proficiency in Python with a strong background in backend development.
• In-depth experience with AWS services and cloud-based application deployment.
• Hands-on expertise in building APIs with FastAPI and implementing real-time features using WebSockets.
• Strong knowledge of Kubernetes for container orchestration and microservices management.
• Solid understanding of message queues and event-driven architecture.
• Exceptional written and verbal communication skills, with a passion for articulate collaboration.
• Proven ability to work autonomously in a fast-paced, distributed environment.

Preferred Qualifications:

• Experience working in high-impact or AI-driven projects.
• Background interfacing with multidisciplinary teams in remote settings.