Job Description
Company: CYURÆ
Location: Gurugram, Haryana
Work Mode: Full-time, On-site
Experience Required: 5+ years
Employment Type: Permanent
About the Role
We are looking for a Senior Backend Developer with 5+ years of hands-on experience in designing, developing, deploying and maintaining production-grade applications.
The ideal candidate should have strong expertise in Python, FastAPI, databases, cloud infrastructure and API development, along with a good understanding of AI-enabled applications. You should be comfortable taking ownership of the complete backend lifecycle—from architecture and development to deployment, monitoring and production support.
This is a hands-on engineering role for someone who can independently build scalable backend systems, integrate AI services, work closely with DevOps and guide junior developers.
Key Responsibilities
- Design, develop and maintain scalable backend systems using Python and FastAPI.
- Build secure, reliable and well-documented REST APIs and asynchronous services.
- Take ownership of backend architecture, database design, API contracts and system integrations.
- Develop complete backend workflows from requirement understanding to production deployment.
- Integrate AI models, LLM APIs, recommendation services, embeddings and third-party AI platforms into backend applications.
- Build structured and reliable APIs around AI services, including validation, retries, fallbacks, rate limiting and error handling.
- Work with PostgreSQL, Redis and vector databases for transactional, caching and AI-search requirements.
- Design background-processing systems using queues, workers and event-driven workflows.
- Optimise backend systems for performance, scalability, security and cost.
- Containerise applications using Docker and support deployment on AWS.
- Create and maintain CI/CD pipelines in collaboration with DevOps.
- Manage environment configurations, secrets, logging, monitoring and production alerts.
- Troubleshoot production issues and perform root-cause analysis.
- Implement authentication, authorisation, role-based access and API security controls.
- Write clean, maintainable and testable code with proper unit and integration testing.
- Participate in sprint planning, code reviews, architecture discussions and release planning.
- Mentor junior and mid-level developers and help maintain engineering standards.
- Collaborate with AI, mobile, frontend, product, QA and UI/UX teams.
Required Qualifications
- 5+ years of professional backend development experience.
- Strong hands-on experience with Python.
- Advanced experience building production APIs using FastAPI.
- Strong understanding of asynchronous programming, concurrency and background processing.
- Experience designing and developing complete backend systems for web or mobile applications.
- Strong knowledge of REST APIs, API versioning, validation, authentication and documentation.
- Experience with PostgreSQL, database schema design, indexing and query optimisation.
- Practical experience with Redis for caching, sessions, rate limiting or background jobs.
- Experience integrating AI services, LLM APIs, machine-learning models or AI-based features into applications.
- Good understanding of embeddings, vector search, structured AI responses and model API integration.
- Hands-on experience with Docker and containerised application deployment.
- Experience deploying and managing applications on AWS or an equivalent cloud platform.
- Working knowledge of CI/CD pipelines, Git and GitLab or GitHub workflows.
- Experience with application monitoring, logging, debugging and production support.
- Good understanding of backend security, data protection and secure API development.
- Ability to independently take a backend product from planning to production.
- Strong problem-solving, communication and technical ownership skills.
- Comfortable working full-time from the Gurugram office.
Preferred Qualifications
- Experience with AWS services such as ECS, EKS, Lambda, S3, RDS, ElastiCache, SQS, API Gateway and CloudWatch.
- Experience with Celery, RabbitMQ, Kafka, SQS or similar queue and messaging technologies.
- Knowledge of WebSockets and real-time application development.
- Experience working with vector databases such as pgvector, Pinecone, Qdrant, Weaviate, Milvus or OpenSearch.
- Understanding of RAG pipelines, prompt orchestration and AI gateway architecture.
- Experience working with OpenAI, Anthropic, Gemini, Amazon Bedrock, Hugging Face or open-source AI models.
- Experience with microservices, modular monoliths or event-driven architecture.
- Knowledge of Kubernetes, Terraform or infrastructure-as-code tools.
- Experience working in an early-stage startup or developing a product from zero to one.
- Previous experience mentoring developers or leading backend technical decisions.
What We Are Looking For
We are looking for someone who:
- Is a hands-on developer and not limited to team management.
- Can independently design and build an application backend end to end.
- Understands both development and production deployment.
- Can work effectively with AI engineers and convert model capabilities into reliable product APIs.
- Takes ownership of performance, security, deployment and production stability.
- Can make practical architecture decisions without unnecessarily overengineering the product.
- Is comfortable working in a fast-moving startup environment.
This Role May Not Be Suitable For
- Candidates with experience limited only to basic CRUD API development.
- Candidates who have not independently deployed or maintained applications in production.
- Candidates whose AI knowledge is limited only to basic prompt writing.
- Candidates looking exclusively for a managerial role without hands-on coding.
- Candidates without practical experience in Python and FastAPI.
What Success Looks Like
During the first three to six months, the selected candidate should be able to:
- Understand and strengthen the existing backend architecture.
- Build stable and scalable production APIs.
- Establish clean development, testing and deployment practices.
- Improve backend performance, observability and production reliability.
- Integrate AI services securely and efficiently.
- Create reusable backend modules and clear API documentation.
- Support the deployment and monitoring of applications on AWS.
- Mentor other developers and improve the team's engineering standards.
What We Offer
- A high-ownership role in an AI-first product company.
- Direct collaboration with the founders, CTO and core engineering team.
- Opportunity to influence backend architecture and technical decisions.
- Exposure to AI integrations, scalable systems, cloud infrastructure and production engineering.
- Opportunity to build a technology product from an early stage.
- Competitive compensation based on experience and technical capability.
How to Apply
Interested candidates can send their CV, LinkedIn profile and GitHub/GitLab profile to [email protected].
Please include:
- Current location
- Total backend development experience
- Current CTC
- Expected CTC
- Notice period
- Experience with Python, FastAPI and AI
- Experience deploying applications on AWS
- Details of one application or product developed and deployed end to end
- Confirmation that you are comfortable working on-site in Gurugram