Sandeep Singh

About Sandeep Singh

I\'m a software engineer with 13+ years of experience who has evolved from mobile development into backend engineering with a strong focus on AI-integrated systems.My journey started in 2012 building Android apps in Java, expanded into iOS (Objective-C, Swift), then cross-platform development with React Native giving me a deep appreciation for performance, user experience, and shipping products that scale.Over the last few years I transitioned into full-stack web work with React.js and Node.js, and for the past 1 year I\'ve been going deep on Python building FastAPI services, RAG pipelines using vector embeddings, and integrating with OpenAI and Azure OpenAI APIs.Today, I\'m focused on backend engineering with Python and Node.js designing scalable systems, LLM-powered APIs, and AI workflows that solve real problems.Current Stack: Python · FastAPI · RAG · Vector DBs · OpenAI/Azure OpenAI · Node.jsPast: Android (Java/Kotlin) · iOS (ObjC/Swift) · React Native · React.js

Experience

1. Senior Technical Specialist

   LevelShift

   Oct 2025 — Present

   Building scalable backend systems and AI-powered APIs with Python, focused on Retrieval Augmented Generation (RAG) pipelines and LLM integrations.• Designed and developed high-performance RESTful APIs using FastAPI, enabling asynchronous, production-grade backend services.• Architected RAG systems leveraging vector embeddings and semantic search to deliver context-aware AI features at scale.• Integrated OpenAI and Azure OpenAI APIs into production workflows, building LLM-powered pipelines for intelligent data processing and automation.• Built data transformation and ingestion pipelines using Pandas, streamlining preprocessing for AI model inputs.• Managed and queried vector databases (e.g. Azure Search / Pinecone / ChromaDB) to support efficient similarity search in RAG workflows.• Collaborated with cross-functional teams to translate AI feature requirements into robust, maintainable backend solutions.

Education

• Global Institute of Management and Emerging Technology

  Bachelor of Technology (B.Tech.), Information Technology

  2008 — 2012

Skills

• Mysql
• Core Java
• Javabeans
• Xmpp
• Eclipse
• Objective-C
• Json
• Junit
• J2ee Web Services
• Mobile Applications
• Team Management
• Ios
• Sqlite
• Android Sdk
• Web Services
• Microsoft Office
• Javascript
• Ios Development
• Netbeans
• Spring Framework
• Game Development
• Cascading Style Sheets (Css)
• Android
• Soap
• Html
• Facebook Api
• Spring
• Photoshop
• Java Applets
• Xml
• Ubuntu
• Ajax
• Android Development
• C++
• Java
• Jsp
• Sql
• Xml-Rpc
• Linux
• C