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RJ1899157/README.md

Rishabh Jain · Backend engineering, applied AI, and data systems

Projects More work Evaluation GitHub stats Experience

LinkedIn Email LeetCode GitHub repos

I'm a final-year B.Tech Computer Science student at Amity University, Noida (8.86 CGPA). I build backend and applied AI systems for pipeline monitoring, code exploration, and document retrieval. As an AI Engineering Intern at Marksman Technologies, I helped ship a lead qualification tool used by the sales team.

I'm interested in software engineering roles focused on backend systems, data infrastructure, and applied AI.

Selected projects

PipeGuard · Data pipeline observability

PipeGuard repository Dashboard tour Test results

PipeGuard monitors an Airflow and dbt workload, records execution attempts and data quality results, and traces which datasets a run touches. It preserves earlier failures after a successful retry. Operators can review incident evidence, request an AI investigation, and separately approve a scoped recovery action.

Stack · Python, FastAPI, PostgreSQL, Airflow, dbt, OpenLineage, Next.js

Verification · 599 automated tests and both hosted CI jobs passed at the November 2026 checkpoint.

Show dashboard screenshot

PipeGuard dashboard with an orders pipeline lineage graph and execution details

  • CritHop · Answers multi-hop questions by traversing a passage graph and checking evidence relevance and support along the way. Phase 2 uses a trained reranker to score passage relevance.
  • Codebase Oracle · Parses repositories into a symbol and dependency graph. Combines 2D and 3D exploration with GraphRAG answers that cite source files and line ranges.
  • AirForce · Models indoor air quality in a 3D floor-plan builder. Uses browser-based simulation to show how airflow and pollution change across rooms.
  • reranker-slm · Fine-tunes Qwen2.5-0.5B with QLoRA on MS MARCO passage pairs for relevance scoring. The adapter powers CritHop's trained relevance check.
  • API Docs RAG · Searches 1,220 GitHub REST operations from the OpenAPI spec using dense and keyword retrieval. Returns answers with source links and abstains when evidence is insufficient.

More projects

  • BigQuery Release Radar · Search and filter BigQuery release notes in a Flask dashboard, with caching and CSV export.
  • Brand Builder · Generate product advertising mockups for billboard, newspaper, and social formats.
  • The Tiebreaker · Compare options using weighted criteria, pros and cons, and SWOT analysis.
  • Car Sales Prediction · Compare linear regression and tuned random forests on a customer purchasing capacity dataset.
  • DSA solutions · Topic-organized C++ solutions and a separate LeetCode practice log.

Evaluation highlights

In CritHop's documented evaluation, the Phase 2 reranker improved exact match (EM) over the reported HopRAG baseline on all three datasets.

Dataset HopRAG EM CritHop Phase 2 EM Gain
HotpotQA 62.00 66.20 +4.20 pts
MuSiQue 42.20 45.90 +3.70 pts
2WikiMultiHopQA 61.10 65.40 +4.30 pts

Read the CritHop benchmark results

API Docs RAG retrieved the expected operation in its top three results on 20 of 29 evaluation queries (68.97% Hit@3).

Read the API Docs RAG evaluation

GitHub stats

GitHub activity for the year ending 8 November 2026. 779 contributions; Current streak: 1 day; Longest streak: 7 days; 15 public repositories. Primary languages across 13 public repositories: TypeScript 6, Python 4, C++ 1, CSS 1, JavaScript 1.

Snapshot from the public profile on 8 November 2026. Each classified repository contributes one count to its primary language. View live contribution history

Tools I work with

Area Tools
Languages Python, TypeScript, SQL, C++, Java
Backend and data FastAPI, PostgreSQL, Airflow, dbt, OpenLineage
Retrieval and model evaluation Neo4j, Qdrant, Tree-sitter, BM25, BGE, RAGAS, Hugging Face, QLoRA
Product and delivery React, Next.js, React Flow, Three.js, Docker Compose, GitHub Actions

Experience & education

  • Marksman Technologies · AI Engineering Intern. Helped build a hybrid lead qualification engine and sales intelligence tools.
  • Amity University, Noida · B.Tech in Computer Science and Engineering, 8.86 CGPA.

Selected credentials

Credential Issuer Year Verification
Google AI Professional Certificate Google / Coursera 2026 Verify
Mastering Data Structures & Algorithms using C and C++ Abdul Bari / Udemy 2026 Verify
CCNA Introduction to Networking Cisco Networking Academy 2024 —
Python for Data Science IIT Madras / NPTEL 2024 —
Google AI Essentials Google 2024 —

Pinned Loading

  1. PipeGuard PipeGuard Public

    Local-first data pipeline observability with incident tracking, interactive lineage, evidence-grounded AI investigation, and human-approved recovery.

    Python

  2. codebase-oracle codebase-oracle Public

    Interactive 3D/2D GraphRAG codebase intelligence engine. Visualizes AST hierarchies, traces multi-hop call graphs, and delivers grounded AI architectural insights with anti-hallucination guardrails…

    TypeScript

  3. CritHop CritHop Public

    Multi-hop QA system combining HopRAG graph traversal with Self-RAG critique gates. Beats HopRAG on HotpotQA, MuSiQue, and 2WikiMultiHopQA. Phase 2 integrates a trained reranker-slm adapter at the I…

    TypeScript

  4. reranker-slm reranker-slm Public

    Lightweight cross-encoder reranker based on Qwen2.5-0.5B fine-tuned with LoRA for passage relevance scoring.

    Python

  5. aws-envhacks aws-envhacks Public

    Interactive 3D architectural floor plan builder with real-time indoor air quality (IAQ) simulation, CFD airflow modeling, and AWS Bedrock AI environmental insights.

    TypeScript

  6. LEETCODE_PROBLEMS LEETCODE_PROBLEMS Public

    A collection of LeetCode questions to ace the coding interview! - Created using [LeetHub v2](https://github.com/arunbhardwaj/LeetHub-2.0)

    C++