Senior Software Engineer 7+ years (Must have- Python, FastAPI (or FlaskDjango), Langchain, Mongodb, RestAPI)

• Build scalable and production grade AI systems involving big data queries. 

• Build MCP based Agentic AI chat bot dealing with intent classification agent state management etc. 

• Build scalable REST APIs in FastAPI to integrate with LLM APIs (OpenAI Claude Azure OpenAI etc.) 

• Manage and query structured/unstructured data in MongoDB 

• Work closely with AI engineers to productionize GenAI use cases (chatbots summarization classification embedding search) 

• Design token-efficient API interactions and manage rate limits with LLM providers 

• Optimize performance latency and reliability of AI-enhanced APIs 

• Maintain clean secure and testable code across backend and frontend 

• Own end-to-end features: from UX to backend logic to API integration

Qualifications :

Must-Have Skills: 

• 7 years of experience in full stack development 

• Strong hands-on experience with FastAPI (or Flask/Django) and Python.

• Strong hands-on experience with LangChain LangGraph Agentic AI and openAI LLM. 

• Strong hands-on experience with Multi Agentic AI systems. 

• Strong hands-on experience with MCP based AI architectures. 

• Solid experience with MongoDB (including schema design and aggregation pipelines) 

• Experience integrating with LLM APIs (e.g. OpenAI Anthropic Cohere Mistral Azure OpenAI etc.) 

• Deep understanding of RESTful API design and best practices 

• Git Docker and familiarity with CI/CD pipelines 

Additional Information :

• Nice to Have: 

• Familiarity with prompt engineering embeddings vector databases (like Pinecone FAISS Weaviate) 

• UI/ Angular knowledge. 

• Experience working on GenAI-driven UIs (chat interfaces knowledge panels QCA) 

• Knowledge of JWT OAuth2 API rate limiting strategies 

• Basic understanding of LLM token usage context length constraints and caching 

• Experience with PostgreSQL or hybrid Mongo/Postgres data models 

• DevOps awareness: Kubernetes cloud deployment (AWS/Azure/GCP) 

Our Benefits

• Flexible working environment
• Volunteer time off
• LinkedIn Learning
• Employee-Assistance-Program (EAP)

NIQ may utilize artificial intelligence (AI) tools at various stages of the recruitment process including résumé screening candidate assessments interview scheduling job matching communication support and certain administrative tasks that help streamline workflows. These tools are intended to improve efficiency and support fair and consistent evaluation based on job-related criteria. All use of AI is governed by NIQs principles of fairness transparency human oversight and inclusion. Final hiring decisions are made exclusively by humans. NIQ regularly reviews its AI tools to help mitigate bias and ensure compliance with applicable laws and regulations. If you have questions require accommodations or wish to request human review were permitted by law please contact your local HR representative. For more information please visit NIQs AI Safety Policies and Guiding Principles: NIQ

NIQ is the worlds leading consumer intelligence company delivering the most complete understanding of consumer buying behavior and revealing new pathways to 2023 NIQ combined with GfK bringing together the two industry leaders with unparalleled global reach. With a holistic retail read and the most comprehensive consumer insightsdelivered with advanced analytics through state-of-the-art platformsNIQ delivers the Full View. NIQ is an Advent International portfolio company with operations in 100 markets covering more than 90% of the worlds population.

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Our commitment to Diversity Equity and Inclusion

At NIQ we are steadfast in our commitment to fostering an inclusive workplace that mirrors the rich diversity of the communities and markets we serve. We believe that embracing a wide range of perspectives drives innovation and excellence.  All employment decisions at NIQ are made without regard to race color religion sex (including pregnancy sexual orientation or gender identity) national origin age disability genetic information marital status veteran status or any other characteristic protected by applicable laws. We invite individuals who share our dedication to inclusivity and equity to join us in making a meaningful impact. To learn more about our ongoing efforts in diversity and inclusion please visit the  Work :

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Employment Type :

Full-time