Skip to content
View devjoshi2005's full-sized avatar
🎯
Focusing
🎯
Focusing

Block or report devjoshi2005

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
devjoshi2005/README.md

Dev Joshi

Cloud Security & Full Stack Developer
Chennai, India • LinkedIn • Portfolio • LeetCode

Security-minded software engineer specializing in automated cloud security, applied graph ML, high-concurrency backend pipelines, and AI system security. Driven by first-principles problem solving—moving beyond finding security gaps to building high-throughput, self-remediating infrastructure.


Core Systems & Security Projects

Engineered a multi-cloud IAM attack path analyzer using FastAPI, Neo4j, and Node2Vec anomaly detection.

  • Ingests AWS & GCP IAM permission models into a Neo4j graph (13 node types) to execute Cypher queries across 29 privilege-escalation patterns.
  • Combined deterministic rule checks with Node2Vec embeddings and Local Outlier Factor (LOF) graph-anomaly scoring; scanned a 1,000-principal environment in ~5s (~30s end-to-end) with zero false positives across test sets.
  • Interactive Next.js graph rendering handles 391 nodes in ~1.5s.

Automated multi-cloud compliance and financial risk quantification engine built on hybrid RAG.

  • Ingests live AWS/Azure telemetry into a hybrid BM25 + vector search RAG pipeline (LlamaIndex + ChromaDB) over 6 regulatory frameworks (232 controls across SOC 2, ISO 27001, NIST CSF 2.0).
  • Automates control mapping and remediation drafting, cutting compliance triage from 30 → 6 minutes per finding (80% reduction).
  • Integrates the FAIR framework (ALE) to quantify technical findings into executive exposure ($180K / INR 1.6 Cr).

Production-tested event-driven notification platform built for resilience and zero data loss under chaos conditions.

  • Built using Django, Channels (ASGI), Celery, Redis, and PostgreSQL with SELECT FOR UPDATE SKIP LOCKED escalation sweepers and HMAC-signed acknowledgement links.
  • Benchmarked via k6 on a single t3.micro: sustained ~30 events/s (560ms p95), 500 concurrent WebSockets, and ~1.0s p95 delivery.
  • Maintained zero lost or duplicated messages across 1,300 chaos events using transactional outbox and jittered backoffs; fixed an ASGI sync-ORM leak, cutting HTTP 5xx rates from 6.88% to 0%.

Automated incident response engine utilizing unsupervised ML and Graph-based blast radius mapping.

  • Trains an Isolation Forest pipeline over 30K real AWS CloudTrail log events across 7 behavioral features (13ms p95 inference latency).
  • Maps detected anomalies inside Neo4j to evaluate 4-hop attack blast radius paths, gating automated Terraform remediation behind OPA/Rego policy checks to cut sub-35s MTTD/MTTR.

3-way financial reconciliation workbench built using Java 21 & Spring Batch.

  • Processes 100K+ transaction rows at ~850 rows/s on an EC2 t3.micro using Spring Batch checkpointing and PostgreSQL SKIP LOCKED.
  • Asynchronous ingestion pipeline (Next.js → Spring Boot → S3 → SQS) sustains ~120ms p95 API latency.

Technical Stack

  • Languages: Python, TypeScript, Java (21), SQL, Cypher, Bash
  • Applied AI & ML: RAG Pipelines, LlamaIndex, ChromaDB, Hybrid Search (BM25 + Vector), OpenAI / LLM APIs, Node2Vec, scikit-learn (Isolation Forest, LOF)
  • Backend & Systems: FastAPI, Django REST Framework, Django Channels (Daphne/ASGI), Spring Boot, Spring Batch, Celery, WebSockets, REST APIs
  • Security & Cloud: AWS (EC2, S3, SQS, CloudTrail, GuardDuty), Azure, GCP, Docker, Terraform (IaC), OPA/Rego, OWASP ZAP, SonarQube, Trivy, Prowler
  • Data Stores & Messaging: PostgreSQL, Redis (Pub/Sub & Caching), Neo4j, SQLite, AWS SQS

Certifications & Credentials

  • Microsoft Certified: Azure Security Engineer Associate (AZ-500)
  • Microsoft Certified: Security, Compliance & Identity Fundamentals (SC-900)
  • Coursera / Professional: Security in Google Cloud Specialization | AWS Cloud Technical Essentials

Open Source & Active Focus

  • Open Source: Active contributor to security and cloud tooling repos (currently engaging with OWASP nettacker security modules & others).
  • Current Focus: Building production-grade AI Agent guardrails, optimizing asynchronous RAG pipelines, and practicing LeetCode.
  • Goal: Seeking SDE, Applied AI, or Cloud Security / DevSecOps engineering roles at product-first tech firms and GCCs.

Outside of Engineering

Travelling • Music • Watching films • Tech Hackathons & CTFs

Popular repositories Loading

  1. Google-Cloud-Security-Environment Google-Cloud-Security-Environment Public

    Google Cloud Security Project related to implementing multiple cloud security services ranging from IAM to storage protection

    2

  2. DevSecOps-Container-Remediation-Project DevSecOps-Container-Remediation-Project Public

    DevSecOps project related to microservice architecture application

    HTML 1

  3. LLM-council LLM-council Public

    fight arena for chatbots

    1

  4. Grc-Compliance-Engine Grc-Compliance-Engine Public

    GRC Project demonstrating Automation of Scanning,Remediating and Documentation of Compliance violations of cloud environments

    Python 1

  5. ResilienceOps ResilienceOps Public

    Github Project demonstrating the working of a cloud native incident response platform

    Python 1

  6. AuthMap AuthMap Public

    Github project containing the implementation of IAM (Identity and Access Management) Attack Path & Cost Compliance Analyzer

    TypeScript 1