R. Raushan
Rishav Raushan

Principal Developer

Rishav
Raushan

Principal Developer and Tech Lead with 10+ years of experience architecting high-performance distributed systems. Proven ability to lead company-wide initiatives, define technical standards, and deliver fault-tolerant, production-grade systems end-to-end. Experienced in leading cross-functional teams, collaborating with international stakeholders, and owning products from concept to delivery.

01

Selected work

Dev Intelligence Platform

Multi-tenant, GitHub-based developer-intelligence platform surfacing PR bottlenecks, review health, and CI reliability from deterministic flow metrics — with classical ML for revert-risk and GenAI confined to grounded narration and clustering.

GOPYTHONFASTAPIKAFKAFLINKPOSTGRES+CITUSCLICKHOUSELANGGRAPHOPENTELEMETRY

FieldOps Copilot

AI triage over NYC 311 service requests: a daily Socrata feed flows through embedding-based dedup (pgvector), a calibrated cascade classifier (cheap Groq tier → OpenAI) with a confidence gate, and a single LangGraph agent loop on only the ambiguous tail — which drafts human-gated work orders. An LLM-as-judge benchmarks the agent against a baseline with stated CIs.

PYTHONFASTAPIPOSTGRES+PGVECTORLANGGRAPHOPENAIGROQLANGSMITHOPENTELEMETRY

Blitz — answers to your NFL questions

Agentic RAG over NFL play-by-play and roster data — a LangGraph router/retrieval/generation/reflection graph backed by ChromaDB, with a model-agnostic chat layer(Anthropic/OpenAI/Groq. Every LLM call is OTel-traced end-to-end.

PYTHONLANGGRAPHCHROMADBSTREAMLITPANDASNUMPYOPENTELEMETRYGRAFANA

Grounded RAG over Wikipedia articles

Grounded RAG over 1K Wikipedia articles — hybrid dense+sparse retrieval, cross-encoder reranking, cited generation, and an explicit abstain path when evidence is weak. Every answer is grounded, scored, ACL-aware, and designed to scale toward 10M docs by swapping infrastructure.

PYTHONFASTAPIQDRANTLANGGRAPHPOSTGRES+PGVECTORCOHERE RERANKOPENAIHUGGING FACEBM25
02

Experience

JAN 2023 — APR 2026

Principal Developer / Tech Lead — PinnacleCode · TOCA Football

Led a 6-engineer team delivering a sports-tech platform across 25+ studios — $4.3M+ in Stripe payments, −18% session failures, real-time booking over a shared Pub/Sub backplane.

NOV 2019 — DEC 2022

Associate Manager / Sr. Developer — UNIRAC

Led UBuilder, a solar design & proposal platform for 500+ customers; cut design-to-proposal cycle by ~8 days and scaled the India team from 3 to 10.

JAN 2018 — NOV 2019

Senior Software Developer — BrightWhite Innovations

Built a secure, auditable bidding repository with state-machine RFP lifecycle, vendor clarifications and immutable audit trails.

AUG 2015 — DEC 2017

Software Developer — Amdocs

Architected an async ingestion pipeline syncing telecom bundling, promotions and regional tax logic into e-commerce checkout flows.

JAN 2015 — JUNE 2015

Software Engineer Intern — NestAway

Developed a lightweight Settlement Reconciliation service that used background workers to scan daily bank settlements against our internal financial ledgers, flagging payment mismatches or double-charges.

03

Capabilities

LANGUAGES
TypeScript · Python · Java
BACKEND
gRPC · Node · Fastify · Django · PostgreSQL · DynamoDB · MongoDB · Kafka · Redis
ARCHITECTURE
Microservices · Event-driven · Pub/Sub · Fault-tolerant · Event Sourcing
FRONTEND
React · Redux · Zustand · TanStack Query
INFRA
AWS · GCP · GitHub Actions · Docker · Kubernetes · Prometheus · OpenTelemetry
APPLIED AI
Agentic Workflows · RAG · LangGraph · Tool Use · Structured Outputs · Eval Harnesses
04

Writing