Senior Python Engineer

Ciklum is looking for a Senior Python Engineer to join our team full-time in India. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the role: As a Senior Python Engineer , become a part of a cross-functional development team engineering experiences of tomorrow. We are looking for a Senior Python Developer with deep expertise in Python backend architecture, AWS cloud infrastructure, and modern data systems to build performant, event-driven applications. In this role, you will lead the backend design, manage scalable cloud infrastructure, maintain robust data layers, and integrate emerging AI/LLM components while working across the full application stack. Responsibilities: Backend & System Architecture: Architect and maintain high-performance microservices, REST APIs, WebSockets, and background job processing leveraging Python and FastAPI. Design resilient, event-driven systems built for scale Cloud Infrastructure & DevOps: Drive AWS infrastructure deployment (ECS/EKS, Lambda, RDS, S3, API Gateway) using Terraform or AWS CDK. Build automated CI/CD pipelines with GitHub Actions and monitor overall system health Database & Data Management: Model, optimize, and maintain relational (PostgreSQL), NoSQL (DynamoDB), and in-memory (Redis) databases to ensure fast query performance and high availability Frontend Engineering: Build responsive user interfaces using React, Next.js (App Router), TypeScript, and Tailwind/MUI, integrating state management and secure authentication flows Security & Auth: Enforce enterprise-grade API security, OAuth/JWT authentication, Role-Based Access Control (RBAC), and centralized secrets management across all services AI & Agentic Integrations: Implement AI capability integrations using prompt engineering, structured outputs, RAG workflows, vector databases, and agentic frameworks (e.g., LangGraph, PydanticAI, CrewAI) Testing & Quality: Ensure system stability through robust testing pipelines using Pytest, comprehensive API test suites, and basic LLM evaluations Requirements: Backend: Python, FastAPI, Async Programming, REST APIs, WebSockets, Background Jobs AWS: ECS/EKS, Lambda, API Gateway, S3, IAM, Secrets Manager, CloudWatch, RDS, Bedrock Strong Proficiency Databases: PostgreSQL, DynamoDB, Redis, Advanced SQL Optimization Architecture: Microservices, Event-Driven Architecture, Scalable API Design DevOps: Docker, CI/CD Pipelines, GitHub Actions, Infrastructure as Code (Terraform or AWS CDK), Monitoring Security: OAuth/JWT, RBAC, Secrets Management, API Security Medium Proficiency Frontend: React, Next.js (App Router), TypeScript, Tailwind CSS / MUI, State Management, Client-Side Authentication Testing: Pytest, Automated API Testing, LLM Performance Evaluation Working / Basic Knowledge AI/LLM Engineering: Prompt Engineering, Structured Outputs, Tool Calling, RAG, Embeddings, Vector Databases Agentic Frameworks: LangGraph, PydanticAI, OpenAI Agents SDK, CrewAI (or similar frameworks) What’s in it for you? Strong community: Work alongside top professionals in a friendly, open-door environment Growth focus: Take on large-scale projects with a global impact and expand your expertise Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies Care: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultations About us: At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. India is a strategic innovation hub for Ciklum, with growing teams in Chennai and Pune leading advancements in EdgeTech, AR/VR, IoT, and beyond. Join us to collaborate on game-changing solutions and take your career to the next level. Explore, empower, engineer with Ciklum! Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum. #LI-GP1