Helping clients build scalable APIs, data pipelines, AI agents, and automation.

I architect production-ready backend systems, scrape multi-source data feeds, and deploy pragmatic LLM workflows. Delivered 12+ paid projects for international clients since 2020.

What I Can Build For Your Organization

AI Agents & RAG Systems
Backend APIs (Java, Python, Node)
Data Pipelines & ETL
Web Scrapers & Automation
Analytics Dashboards
Conversational AI
Shubh Pundir
Specializations

How I Can Help Your Product Grow

I design and implement custom, reliable backend and AI solutions that automate workflows, structure data, and fuel product growth.

AI Agent Development

Custom autonomous agents and intelligent search engines that streamline operations and eliminate repetitive human workflows.

Goal: Automate customer support, speed up document analysis, and construct intelligent RAG systems.

  • Multi-agent orchestration (LangGraph, CrewAI)
  • Hybrid search RAG pipelines with custom semantic rerankers
  • Local LLM deployments (Llama, Mistral) for strict privacy compliance
  • Prompt engineering and model fine-tuning for structured data generation
Core Technologies
LangChainLangGraphQdrantFastAPIOpenAI / Claude

Data Engineering & Pipelines

Robust data collection engines, automated web scrapers, and ETL pipelines designed to turn raw web noise into structured business databases.

Goal: Harvest data at scale, synchronize multi-source feeds, and automate business intelligence.

  • Distributed web scrapers with automatic proxy rotation & Captcha bypass
  • Airflow or Celery scheduled cron pipelines for continuous data sync
  • Database design, migrations, and performance indexing (PostgreSQL, MongoDB)
  • Real-time streaming and event-driven pipelines (Kafka, Redis)
Core Technologies
PythonAirflowPostgreSQLCeleryScrapyBeautifulSoup

Scalable Backend Systems

Secure, low-latency API architectures designed to support web and mobile products without scaling bottlenecks.

Goal: Establish rock-solid backend infrastructure with high availability and comprehensive telemetry.

  • RESTful, GraphQL, and gRPC APIs designed for long-term frontend consumption
  • Role-based authentication, JWT session handling, and rate limiting
  • System sharding, database replication, and memory caching (Redis, B+Trees)
  • Microservice migration, Dockerization, and structured health-check telemetry
Core Technologies
Java (Spring Boot)Node.js (Express)FastAPIDockerRedis

Technical Advisory & Consulting

Guidance on technology selection, database schema mapping, system scaling paths, and assessing AI project feasibility.

Goal: Verify project scope and prevent costly re-architectures before writing code.

  • AI feasibility analysis: checking cost-per-call, prompt safety, and accuracy trade-offs
  • Database audit: identifying indexing bottlenecks and database queries slowing down pages
  • Architecture mapping: designing microservices schemas and data flows for new products
  • Cloud budget optimization: finding and shutting down redundant compute/database cycles
Core Technologies
System DesignFeasibility AuditsQuery TuningCost Optimization
Case Studies

Real Solutions. Measured Outcomes.

Explore how backend and AI engineering solved concrete operational bottlenecks and delivered clear ROI for startups.

Alice Ann WilliamsDenmark 🇩🇰Verified Client

Production RAG Infrastructure for Enterprise Document Intelligence

85%

Latency Reduction

92%

Search Accuracy

$12k

Monthly Notional Savings

The Problem

The client had a slow internal search utility looking up thousands of complex engineering documents, guidelines, principles, etc. The legacy system suffered from high retrieval latency (averaging 45s) and frequent LLM hallucinations at scale.

The Solution

Architected a low-latency hybrid search retrieval-augmented generation (RAG) pipeline. Designed custom indexing protocols using FastAPI, Open Search Instance, and custom semantic reranking models to filter out noise. Engineered a stateful response engine with strict guardrails to prevent hallucinations.

The Outcome

Reduced search and retrieval latency down to 3 seconds. Scaled seamlessly to 1,200+ monthly active users (MAU) while cutting manual overhead, saving $12,000/month in operations cost.

FastAPILangChainOpenSearchReactJS
Martin L. SørensenDenmark 🇩🇰Verified Client

Automated Customer Operations (CRM) Engine

68%

Support Automated

88%

User Retention

99.5%

Call Uptime

The Problem

The client faced scaling constraints due to overwhelming support volume, resulting in delayed ticketing, lost orders, and customer churn. Manual CRM entries consumed several hours of staff time daily.

The Solution

Built a custom, CRM-integrated conversational AI engine. Developed a robust dialog state machine using Python, RASA NLU, and FastAPI to handle ordering inquiries and call routing. Integrated real-time webhooks with the client's CRM to auto-update transaction records and support transcripts.

The Outcome

Successfully deflected and automated 68% of inbound support inquiries. Boosted user retention to 88% while freeing up the core team from repetitive administration.

PythonRASAFastAPIPostgreSQLCRM Webhooks

Work Experience

Professional journey and key achievements

💼
Jan 2022 - May 2025

Freelancer

  • Worked with startups, SMEs across India, UK, Denmark, UAE, Ethiopia and Morrocco building dashboards, AI backend systems to optimize business and operational efficiency.
  • Developed ETL data pipelines for text preprocessing for Big Data for the use-cases of unifying unstructured messy data into structured formats for analytics, validate business hypothesis using keyword mapping and query resolving for greivances and SLA tracking.
  • Developed LLM support systems for customer service chatbots, whatsapp + slack integrations with CRM systems using low cost and low latency methodologies.
🚀
Aug 2025 - Dec 2025

Founding Software Engineer Member

  • Worked on the product of BodhiAnalytics and DIAL.ai for improving the call reliability and performance by refactoring the SIP communication stack into a production-grade microservice ecosystem using Drachtio and FreeSWITCH, improving call reliability for users.
  • Enhanced internal Analytics Engine by fine-tuning a BERT-based Intent Classifier, reducing redundant RAG calls by 40% and improving intent detection accuracy for inbound knowledge base screening.
  • Optimized real-time call performance by reducing SIP latency by 30% through debugging and streamlining Redis Streams and WebSocket event handling for OpenAI's Realtime API integration.
📊
Jun 2025 - Jul 2025

Data Engineering Intern

  • Analyzed service call transaction logs and developed a comprehensive dashboard using Tableau.
  • Translated client requirements into actionable specifications, leading to the successful development of multiple concept documents.
  • Developed a Django-based asset management framework, integrating Win32 API for device registration and software patch management.
🤖
Jan 2024 - May 2024

Machine Learning Engineer

  • Implemented NLU and NLP techniques on multiple clientele dataset to encrypt and safeguard sensitive information with an accuracy of 92%.
  • Collaborated with cross functional teams to integrate privacy-preserving techniques seamlessly into legacy and existing systems.
  • Deployed end to end chatbot services and fine tuned open source LLMs to drive customer satisfaction close to 75%.
Sep 2021 - Nov 2021

Junior Java Developer Intern

  • Analyzed requirements and planned SRS for multi-media organizations.
  • Implemented REST APIs and optimized database queries for payment gateways via RazorPay.
  • Worked on performance improvements and bug fixes resolving to a 20% improvement in backend lags.

Skills

Technologies and expertise I work with

Languages

💻
JavaPythonRC/C++JavaScript/TypeScriptHTML/CSSSQL/NOSQL

Technical Skills

🔧
Data ScienceData Analytics/WranglingBusiness IntelligenceWeb Scraping/ Data SourcingMachine Learning/Deep LearningNatural Language ProcessingRecommendation EnginesLLM TuningRAG over document

Frameworks

⚙️
SpringbootDjango & FastAPINest.js & Express.jsMS SQL/ PostgreSQLMongoDB/CassandraTensorflow & PytorchOpenCV & EasyOCRLangChain/LangGraphQdrantDB/PineconeAWS/ AzureElasticsearch/ OpenSearchApache Hadoop Ecosystem

Tools

🛠️
Git & GitHubPowerBITableauELK stackMS ExcelPostmanFigma

Soft Skills

🤝
Problem-SolvingTeamwork & CollaborationAdaptabilityCommunicationStraight forward

Education

Academic journey and achievements

Bachelor of Technology in Computer Science

🎓

The Northcap University • 2022 - 2026

CGPA: 8.98

ISC: Grade 12th

📚

Sri Sri Academy • 2020 - 2022

Percentage: 90.0%

ICSE: Grade 10th

📖

Sri Sri Academy • 2020

Percentage: 94.7%

Certifications

Professional certifications and achievements

MongoDB Fundamentals

Issued by:MongoDB Academy
Year:2024

Learned NoSQL, Mongo Workspaces and database connectivities to applications.

View Certificate

Microsoft Azure Fundamentals (AZ-900)

Issued by:Microsoft
Year:2024

Understanding of cloud computing concepts and Azure services. Deployment of ML and AUTOML Apps onto the Azure and Databricks.

View Certificate

AWS Academy Data Engineering

Issued by:AWS
Year:2025

Practiced Cloud Data Engineering and validated knowledge on ETL pipelines.

View Certificate

Need Help Building Your Backend or AI Product?

Let's map out your systems architecture, assess the feasibility of your AI workflows, or scope out a high-performance database plan.

30-Minute Architecture AuditsZero-Obligation Project Scopes

Get In Touch

Let's connect and discuss opportunities