For $8B fintech rails powering Amazon, DoorDash, Walmart & TikTok Shop. And for the AI systems we're all about to depend on.
Staff security engineer × peer-reviewed AI-safety researcher. Today: Zero Trust at Parafin (YC, $750M valuation). Three peer-reviewed publications in 2026 — open access, CC-BY 4.0: EmbedGuard (RAG security · IJCESEN, Scopus Q3) · GenOps (AI-in-CI/CD governance · JISEM, Scopus Q4 + DOAJ) · RuntimeGuard-AI (EU AI Act Article 14 compliance · JoCAAA).
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name: Neeraj Kumar Singh Beshane
location: San Francisco Bay Area, CA
current_role: Staff Security Infrastructure Engineer @ Parafin
previous: [Meta Reality Labs, Raymond James, Wayfair, JPMorgan Chase, American Express]
experience: 15+ years
focus: Security Infrastructure × Distributed Systems × AI Safety
publications: 3 peer-reviewed (2026) · 1 under review
writing: Technical articles on Medium and LinkedIn
speaking: Conf42 DevOps 2026 — invited speakerThree peer-reviewed papers published in 2026 — all open access (CC-BY 4.0). Each project bundles paper + code + (where applicable) invited talk.
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Cross-Layer Detection and Provenance Attestation for Adversarial Embedding Attacks in RAG Systems · IJCESEN, Vol 12 No 1, pp 589–602 · 2026-02-05
Production RAG systems are vulnerable to adversarial embeddings — poisoned vectors that look right under cosine similarity but steer downstream generation. EmbedGuard combines embedding-space anomaly scoring with provenance attestation, so an attack has to defeat both layers at once.
Key results: 94.7% detection rate on optimization-based attacks · 51 ms mean latency overhead · evaluated on a 500K-embedding production-scale system · Docker-reproducible benchmarks.
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A Governance-First Architecture for Embedding Generative AI into CI/CD Pipelines · JISEM, Vol 11(1s), pp 1518–1539 · 2026-02-15 Companion talk: Conf42 DevOps 2026 — invited speaker
A four-pillar framework for running GenAI inside production CI/CD without breaking governance: contextualization, strategic guardrails, deployment assurance, and governance audit trails.
Key results: 55.7% reduction in median deployment cycle time (52.8 → 23.4 min, p < 0.001) · zero safety policy violations · 47.2% reduction in error-budget variance · evaluated across 15,847 deployments / 127 microservices / 8 months / 3 organizations.
Scalable Tamper-Evident Accountability for High-Risk AI Systems Under the EU AI Act · JoCAAA, Vol 35 No 1, pp 1074–1090 · 2026-01-31
The first open-source compliance architecture for EU AI Act Article 14. Uses Groth16 zero-knowledge proofs on the bls12-381 curve to deliver cryptographically rigorous, tamper-evident audit trails inside a production latency budget.
Key results: 2.3–4.1% latency overhead · 62 ms witness generation · 1,389 ms total proving time at 50K-constraint scale · first open-source reference implementation for Article 14.
A Shared-State Multi-Agent Framework for Safe Java Code Migration · submitted to IJIES (INASS treatise #20262024)
A multi-agent framework that coordinates specialized agents through shared state to perform large-scale Java migrations safely.
Technical writing on Medium and LinkedIn — distributed systems, CI/CD, Kafka, Kubernetes, RAG, AI safety, security infrastructure.
Each chapter built on the last — from writing COBOL adapters to architecting Zero Trust infrastructure.
2025 ──────── PARAFIN ──────────────────────────────────────── present
Dec Staff Security Infrastructure Engineer
├─ Architecting Zero Trust for an $8B+ fintech platform
├─ Partners: Amazon, DoorDash, Walmart, TikTok Shop
├─ Security mock drills, incident response, BC/DR, PII governance
└─ YC-backed, $750M valuation
2024 ──────── META (REALITY LABS) ──────────────────────────── 2025 Dec
Jun Staff Software Engineer
├─ Led CI/CD modernization (Project Chesterfield) for Quest & Ray-Ban
├─ GenAI migration tool: 95% manual effort reduction, $386K/yr savings
├─ UBM metadata service: 150M+ req/day, 99.9% reliability
├─ Onboarding assistant: 55% oncall reduction, adopted by 3 teams
└─ Mentored 6 SEs (3 promoted to Staff within 12 months)
2024 ──────── RAYMOND JAMES ────────────────────────────────── 2024 Jun
Apr Lead Software Development Engineer
├─ Document generation platform: 8K-12K docs/month, 99.2% success
└─ Established 95% code coverage standard across team of 8
2022 ──────── WAYFAIR ──────────────────────────────────────── 2024 Mar
Jan Technical Architect / Principal
├─ DevSecOps platform: 50M+ security checks/month
├─ Kubernetes policy-as-code engine (3% false positive rate)
├─ Unified OAuth 2.0: 125M+ API calls/week, 99.97% uptime
├─ Selected as 1 of 3 architects from 50+ for security roadmap
└─ Mentored 20+ engineers (8 promoted to senior/staff)
2019 ──────── JPMORGAN CHASE ───────────────────────────────── 2021 Dec
Mar Senior Software Engineer (CIB)
├─ Escrow platform: $40B+ in deposits
├─ Saga-pattern payment service: 10K+ daily transactions
└─ Auth framework adopted by 18+ CIB teams
2011 ──────── AMERICAN EXPRESS (via TCS) ───────────────────── 2019 Mar
Dec Systems Engineer → Senior Software Developer
├─ Monolith to microservices: 60% code reduction, 66% faster APIs
├─ B2B integration: 2M+ monthly requests, 15+ carrier partners
├─ Locations: Bangalore → Montevideo → Phoenix
└─ This is where the journey began 🚀
| Recognition | Detail | |
|---|---|---|
| 🏅 | Aureum Gold Laureate (Season 3) | NLP Achievement Award · Aureum International Awards Council · ref. TEC-26-12296 · Press |
| 🛡️ | Hackathon Raptors Fellow | Fellow #14975 · peer-elected UK CIC fellowship (5-Fellow vote, 4/5) · five-year achievement requirement |
| 🎖️ | IICSPA Fellow (FIICSPA) | Top 1% of 5,500+ members · peer-reviewed by experts from IBM, Moody's, SAP, JPMC, Goldman Sachs · profile |
| 🔬 | Sigma Xi Full Member | Scientific Research Honor Society (est. 1886) · 200+ Nobel laureates among members · Full membership requires 2+ refereed publications |
| ⚡ | IEEE Member (ID 102037294) | Institute of Electrical and Electronics Engineers |
Three community-impact repositories with 100+ stars each. Research repos with their papers are grouped above under Research & Publications.
|
Comprehensive coding interview solutions & resources
Used by engineers worldwide who landed roles at top tech companies |
System design patterns & implementations
Distributed-systems primer for staff-level interviews |
Curated DS, algorithms & system-design library
Reference material across topics, regularly maintained |
2,235+ total stars across owned repos · 605 forks · 3 repos with 100+ stars · 9 years contributing on GitHub
| Metric | Scale | |
|---|---|---|
| 🔐 | Zero Trust infrastructure | $8B+ platform (Parafin) |
| 🛡️ | EmbedGuard detection rate | 94.7% · 51 ms overhead · 500K embeddings (peer-reviewed) |
| ⚡ | GenOps deployment-cycle reduction | 55.7% · zero safety violations · 15,847 deployments (peer-reviewed) |
| 🤖 | GenAI migration automation | 95% effort reduction (Meta) |
| 📦 | Unified Build Model | 150M+ requests/day (Meta) |
| 🛡️ | DevSecOps pipeline | 50M+ security checks/month (Wayfair) |
| 🔑 | Identity platform | 125M+ API calls/week · 99.97% uptime (Wayfair) |
| 👨🏫 | Engineers mentored | 50+ across all roles |
| ⭐ | Open source stars | 2,235+ across owned repos · 605 forks · 3 repos with 100+ stars |
Languages Java · Python · Go · TypeScript · Groovy
Frameworks Spring Boot · FastAPI · Node.js · React
Cloud AWS · GCP · Kubernetes · Terraform · Docker
Security Zero Trust · IAM · Policy-as-Code (OPA/Kyverno) · TLS/mTLS · ZK proofs (Groth16)
Data Kafka · PostgreSQL · Cassandra · Redis · BigQuery
AI/ML RAG Pipelines · LLM Integration · Prompt Engineering · MCP · AI Safety
DevOps CI/CD · GitOps · ArgoCD · Datadog · PagerDuty
Patterns Microservices · Event Sourcing · CQRS · Saga · mTLS
| Article | Platform |
|---|---|
| Prompt Engineering vs Context Engineering vs Reasoning Engineering | |
| From 50 Million Events to a Single Answer: Building a RAG Pipeline | Medium / LinkedIn |
| Battle-Tested Multi-Region Deployment: Scaling Spring Boot Microservices | |
| From ACID to AI: The Ultimate Guide to Modern Databases | Medium |
| The Kubernetes Odyssey: Embark on a Technological Adventure! | Medium |
🐶 Dog Dad Proud parent of Byte, a mischievous beagle
🎮 Retro Gamer Still speed-running Contra on NES
✈️ Global Dev Coded in Bangalore, Montevideo, Phoenix, Tampa, San Francisco
🚴 Trail Explorer System design on two wheels
