Application Engineer

Ex; Uttar Pradesh; On-site; INR 2,800,000 - 4,200,000; Full time

Job summary

Ex is seeking a Python Developer with AWS Cloud experience to build scalable backend services and cloud-based applications on AWS. The role requires 8–10 years of software development experience and strong Python programming skills with hands-on web framework knowledge.

Key responsibilities include developing Python-based applications, building REST APIs with FastAPI/Flask/Django REST Framework, and leveraging AWS services like Lambda, ECS, S3, and CloudWatch.

Qualifications

• Strong hands-on experience in Python programming.
• Experience with at least one Python web framework such as FastAPI, Flask, or Django REST Framework.
• Experience with AWS cloud services, especially Lambda, ECS, S3, CloudWatch, EventBridge, and Secrets Manager.
• Good understanding of object-oriented programming.
• Experience with API development.

Responsibilities

• Develop, test, and maintain Python-based applications and backend services.
• Build and integrate REST APIs using frameworks such as FastAPI, Flask, or Django REST Framework.
• Work with AWS services such as Lambda, ECS, ECR, S3, EventBridge, CloudWatch, and Secrets Manager.
• Write clean, reusable, and well-tested code following coding standards and review practices.
• Support performance tuning, troubleshooting, logging, and monitoring of production applications.
• Collaborate with architects, developers, QA, and DevOps teams to deliver reliable cloud solutions.

Skills

Python programming

API development

AWS services

Asynchronous programming

Object-oriented design

Backend microservices

RESTful APIs

Web frameworks

Data processing

Git/CI/CD

Tools

FastAPI

Flask

Django REST Framework

ECS

ECR

Lambda

CloudWatch

S3

Git

CI/CD

Job description

JOB DESCRIPTION

Python Developer — AWS Cloud

Role:Python Developer with AWS Cloud Experience

Experience:8–10 years

We are looking for an experienced Python Developer who can build scalable backend services, APIs, and cloud-based applications on AWS. The ideal candidate should have strong Python programming skills, hands-on experience with web frameworks, and working knowledge of AWS services used in modern application development.

KEY RESPONSIBILITIES

• Develop, test, and maintain Python-based applications and backend services.
• Build and integrate REST APIs using frameworks such as FastAPI, Flask, or Django REST Framework.
• Work with AWS services such as Lambda, ECS, ECR, S3, EventBridge, CloudWatch, and Secrets Manager.
• Write clean, reusable, and well-tested code following coding standards and review practices.
• Support performance tuning, troubleshooting, logging, and monitoring of production applications.
• Collaborate with architects, developers, QA, and DevOps teams to deliver reliable cloud solutions.

REQUIRED SKILLS

• Strong hands-on experience in Python programming.
• Good understanding of object-oriented programming and basic design principles.
• Experience with API development using FastAPI, Flask, or Django REST Framework.
• Working knowledge of asynchronous programming, threading, or multiprocessing.
• Experience with AWS cloud services, especially Lambda, ECS, S3, CloudWatch, EventBridge, and Secrets Manager.
• Familiarity with Pandas and NumPy is preferred for data processing use cases.
• Knowledge of code quality tools such as pylint, mypy, pytest, and Git/Bitbucket.
• Develop scalable backend applications and microservices using Python.
• Build RESTful APIs and event-driven services for AI platforms.
• Develop integrations with CRM, CCaaS, IVR, Knowledge Management, and enterprise systems.
• Implement asynchronous processing, workflow orchestration, and automation services.
• Ensure high-quality code through unit testing, code reviews, and CI/CD practices.

Generative AI & Agentic AI

• Design and implement LLM-powered solutions using OpenAI, Azure OpenAI, Anthropic Claude, Gemini, or similar models.
• Develop RAG (Retrieval Augmented Generation) architecture and enterprise knowledge assistants.
• Integrate vector databases and semantic search capabilities.
• Build AI agents capable of tool usage, workflow execution, and decision-making.
• Optimize prompts, grounding strategies, and response quality.

NICE TO HAVE

• Exposure to Amazon Bedrock, Amazon Lex, or GenAI-based application development.
• Experience with API gateways such as Apigee.
• Experience working with containerized applications using ECS and ECR.

HR SCREENING CHECKLIST

• 8–10 years of overall software development experience.
• Strong Python backend development experience.
• Hands-on experience with at least one Python web framework such as FastAPI, Flask, or Django REST Framework.
• Practical AWS experience, preferably with Lambda, ECS, S3, CloudWatch, and Secrets Manager.
• Good communication skills and ability to work with cross-functional teams.