Abhishek Krishna
Senior Full Stack & AI Systems Engineer
Talent
Delhi, NCRMember since June 11, 2026
FastAPINestJSgRPCMicroservicesReactFlutterLangChainLlamaIndexAgentsNeonDBpgvectorAWS EC2CI/CDSystem Design
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FastAPINestJSgRPCMicroservicesReact
About
Full Stack + AI engineer with 4+ years experience building production apps using FastAPI, NestJS, LangChain, LlamaIndex, React, Flutter and cloud-native microservices. Specialized in AI agents, RAG pipelines, vector databases, workflow automation, and end-to-end system design. Built streaming platforms, analytics dashboards, document AI systems, and enterprise microservices.
Experience
Full Stack Developer at Arvasit Technolabs (2022-02 – 2025-05)
- Built an AI-powered document insights system using FastAPI + LangChain.
- Processed LCAP district documents using LlamaIndex and NeonDB pgvector.
- Designed extraction pipelines using pdfplumber and RAG.
- Automated district insights and compliance summaries.
- Built Flutter + NestJS based music streaming app using gRPC microservices.
- Implemented playlist sync, downloads, admin uploads, multi-device support.
- Integrated JioSaavn and JetAudio; improved performance with caching and JWT auth.
- Deployed distributed backend on AWS EC2.
- Built performance report generator using NestJS + Flutter.
- Automated child scoring, insights, and PDF generation.
Flutter Developer at Digital Kranti (2021-08 – 2022-02)
- Built subscription OTT platform Apan Theater (Flutter + PHP).
- Implemented payments, content management, user profiles.
Mobile Developer at Payiza Technologies
- Worked on NFT marketplace, DLT payments app, and women's social platform.
Education
Bachelors in Computer Applications – West Bengal University of Technology (2014 – 2018)
Skills
Senior Full Stack & AI Systems Engineer
