Shailesh Sachan
Software Developer
Mumbai
Summary
Software Engineer with expertise in GenAI, backend systems, and cloud platforms. Proficient in developing scalable web applications, creating LLM pipelines, and contributing to patented AI-driven advancements. Demonstrated success in startup and corporate environments, with skills in Python, AWS, React, and agile engineering practices. Dedicated to promoting technical excellence within dynamic, high-performing teams.
Overview
5
5
years of professional experience
2022
2022
years of post-secondary education
Work History
Software Engineer
LLM/AML | AI Engineer @Microsoft HLS Data Platform VIA (WaferWire Cloud Technologies)
12.2024 - Current
- Spearheaded LLM-powered Interoperability Project using Azure OpenAI to enhance seamless data exchange across heterogeneous healthcare systems.
- Engineered modular LLM pipelines for semantic mapping of HL7, FHIR, and LOINC terminologies, streamlining interoperability workflows.
- Built retrieval-augmented generation systems using Azure Cognitive Search and vector databases for precision in medical queries.
- Developed statistical analysis modules on Azure ML to automate clinical insight generation for early diagnostics.
- Worked with Microsoft engineering teams to scale LLM solutions within HIPAA-compliant environments.
- Tech Stack: Azure OpenAI, AML, Python, LangChain, Azure Cognitive Search, REST APIs, CI/CD
Software Developer Engineer 2
Discoverist.ai INC
10.2023 - 12.2024
- Invented dynamic cataloging framework (US Patent #18/762,625 – pending) to automate real-time data organization.
- Developed Progressive Profiling (US Patent #63/661,135) to enhance user data acquisition over time.
- Architected cost-optimized prompt generation (US Patent #63/665,999) by batching and caching LLM calls.
- Designed multi-modal item correlation system (US Patent #63/677,204) combining visual, textual, and behavioral signals.
- Engineered distributed backend systems using AWS (Lambda, ECS, CDK, Redis, CloudFront).
- Built full-stack apps using React, Node.js, and TypeScript.
- Led prompt engineering using LangChain, LlamaIndex, and GPT-4 for intelligent user-facing systems.
- Implemented vector-based search (Pinecone, BM25) for semantic document retrieval.
- Developed CI/CD pipelines using Terraform, GitHub Actions, and CDK.
Backend Technology Lead
Karma Global Tech
02.2023 - 10.2023
- Mentored developers in scalable backend architecture, improving delivery speed and code quality.
- Designed high-performance APIs using Django and Node.js, reducing latency and boosting throughput.
- Reduced debugging time by 90% via structured logging and Sentry-based monitoring.
- Delivered a compliance application for 2,000+ users, managing complete backend lifecycle.
- Deployed systems to AWS Beanstalk and implemented Progressive Web App (PWA) architecture.
- Built a 12-module compliance platform supporting dynamic workflows and document management.
- Architected microservices with Django, Node.js, Redis, and Celery.
Full Stack Developer
Karma Global Tech
02.2022 - 02.2023
- Developed backend analytics tools in Python/PostgreSQL to surface business insights.
- Automated CI/CD using GitHub Actions and CloudFormation, improving release speed and reliability.
- Built and deployed services on AWS ECS and Lambda for scalable backend systems.
- Created internal dashboards using React and Flask to streamline user operations.
- Used Python and Selenium for data scraping and automated QA testing.
Freelancer / Teaching
12.2020 - 06.2022
- Built web scraping tools using BeautifulSoup and Puppeteer for e-commerce and analytics projects.
- Provided 1:1 and group training in Python, React, and Node.js for international clients (Canada).
- Created customized learning materials and hands-on projects to upskill early-career developers.
Software Programmer
Warm Connect Solutions Pvt Ltd
06.2021 - 11.2021
- Delivered live technical training in React, Node.js, and Python to international clients.
- Designed tailored curricula for development teams to build production-grade applications.
Python Developer Intern
Just Get IT
02.2021 - 04.2021
- Developed internal automation scripts and data processing tools using Python and Pandas.
- Built REST APIs with Flask for student learning portal features.
- Contributed to code documentation and QA, improving maintainability.
Education
BE - Information Technology
University of Mumbai
Skills
Python
JavaScript
TypeScript
PHP
Django
FastAPI
Flask
React
Nodejs
Prompt Engineering
LangChain
Azure OpenAI
OpenAI GPT-4
undefinedTimeline
Software Engineer
LLM/AML | AI Engineer @Microsoft HLS Data Platform VIA (WaferWire Cloud Technologies)
12.2024 - Current
Software Developer Engineer 2
Discoverist.ai INC
10.2023 - 12.2024
Backend Technology Lead
Karma Global Tech
02.2023 - 10.2023
Full Stack Developer
Karma Global Tech
02.2022 - 02.2023
Software Programmer
Warm Connect Solutions Pvt Ltd
06.2021 - 11.2021
Python Developer Intern
Just Get IT
02.2021 - 04.2021
Freelancer / Teaching
12.2020 - 06.2022
BE - Information Technology
University of Mumbai
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