Arpan Sahu

Software Engineer II · Microsoft

AI developer platforms & data-serving APIs over a distributed, petabyte-scale system (IDEAS).

• Built the Always-On MCP (Model Context Protocol) server — a standardized tool layer of 80+ tools (entity search, lineage traversal, Kusto querying, orchestration, incident workflows) — enabling Copilot and other agents to operate petabyte-scale data infrastructure in natural language, with least-privilege access and guarded writes.
• Authored Helix agent-skills (Data Skew Triage, Data Validation) that compose and govern the MCP tools into reusable, evaluated decision workflows — localizing issues, choosing safe remedies, validating correctness, and producing incident/PR-ready evidence.
• Built Pipeline Intelligence, a full-stack observability & governance platform — an interactive dashboard mapping ~108 entities across ~57 services and 8 tiers with live health, right-click blast-radius/impact analysis, ICM integration across 5 teams (triage 15 min → 5 sec), and a RAG Copilot over 80+ indexed docs for natural-language Q&A by non-technical users (replicable across the 105K+ dataset ecosystem).
• Built PIPA, a long-running agentic PR reviewer (hybrid neuro-symbolic: 107 rules + detectors, grounded in a 68K-node lineage graph, LLM for intent/blast-radius) with APAS, a deterministic approval control plane — screening 5,768 PRs across 88 repos in 30 days (~192/day) before approval.
• Built Oncall Pulse, a production dashboard + Teams bot (serverless, Azure Static Web Apps) — 6-sweep incident collection, 4-dimension shift scoring, SLA tracking, and GPT-4o handover summaries; cut on-call prep from 30–60 min to seconds.
• Designed and shipped UDM-compliant data contracts & APIs exposing petabyte-scale datasets to downstream products — schema design, API versioning, backward-compatible migrations, fiscal-year-rollover modeling, and reliability engineering that cut manual recovery 70%.

Software Engineer · Trellix (FireEye · McAfee)

XDR/SOAR SaaS platform — promoted from Associate Software Engineer.

• Built an XDR SaaS platform, migrating customers from per-tenant on-prem EC2 to a centralized Kubernetes architecture with a unified database — enabling scalable, pay-as-you-go services.
• Architected SOAR integrations (Tenable, Azure, VirusTotal, ServiceNow, Trellix/McAfee) handling 3M RPM and 500K concurrent playbook executions; built CI/CD that cut deployment times by 40%.
• Engineered a data-segregation engine over billions of records — moving from DB queries to Redis bit-strings for a ~99.88% memory reduction and 100× faster queries for real-time threat analysis.
• Built a search microservice consolidating three products behind one Elasticsearch-backed interface, improving retrieval speed by 80%.
• Implemented a dynamic, DB-driven rule engine replacing hardcoded detection logic, and built the Trellix IAM microservice for cross-platform authentication.
• Used Generative AI (LangChain, RAG, gRPC) to auto-generate SOAR marketplace apps and playbooks.

Software Engineer · GammaStack

Real-time betting platforms, payments and data pipelines.

• Designed a scalable betting platform for Betfaro supporting 50,000+ concurrent users and $1M+ daily transactions; the New Double Bet model drove a 60% profitability increase and 40% traffic surge.
• Integrated subscription- and order-based payments with crypto and fiat gateways (PayPal, Razorpay).
• Optimized data-processing workflows for KodeKloud by 20% using MongoDB, Flask and AngularJS.
• Reduced bug-resolution time by 15% and release cycles by 30% via automated testing and code-review practices.

B.Tech, Computer Science & Engineering

Lakshmi Narain College of Technology & Excellence · CGPA 8.55