Hi, I'm Neeraj Kumar Singh 👋

I build security that’s invisible and infrastructure that’s boring.

Currently architecting Zero Trust security at Parafin — an $8B+ fintech platform powering capital access for businesses on Amazon, DoorDash, Walmart, and TikTok Shop. Gold Laureate, Aureum Technology Awards (Season 3, NLP Achievement). Fellow, Hackathon Raptors. Published AI security researcher. Invited speaker at Conf42 DevOps 2026. Fellow of IICSPA. 15+ years building mission-critical systems at Meta, Wayfair, JPMorgan Chase, and American Express.

Get In Touch
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About

My Story

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My journey in tech began with a simple question: “How can this be better?” It’s a question that has taken me from writing COBOL adapters for American Express across three continents to architecting Zero Trust security infrastructure for one of fintech’s fastest-growing platforms.

Today at Parafin, I protect an $8B+ embedded lending platform that powers capital access for businesses on Amazon, DoorDash, Walmart, and TikTok Shop. I’ve been named a Gold Laureate in the Aureum Technology Awards (Season 3, NLP Achievement) and elected Fellow of Hackathon Raptors (peer-elected UK fellowship). I’ve published research in AI security (EmbedGuard, under review at PeerJ Computer Science), spoken at Conf42 DevOps 2026, and earned Fellowship in IICSPA and Full Membership in Sigma Xi — The Scientific Research Honor Society.

I thrive on turning complex distributed systems into reliable (and slightly boring) platforms. My goal is to automate the pain points away and build security so seamless you forget it’s there. Whether I’m sketching system diagrams, mentoring engineers, or debugging a gnarly distributed trace at 2am, I’m always searching for the next puzzle to solve.

Recognition

Awards, publications & memberships

International awards

Gold Laureate — Aureum Technology Awards Season 3 (NLP Achievement Award; reference TEC-26-12296), Aureum International Awards Council. Season 3: 4,067 applications received, 1,082 advanced to full assessment, 213 laureates after multi-phase expert evaluation (per program materials and press). Media: Markets Insider — Season 3 results.

Scholarly & research publications

  • EmbedGuard — Cross-Layer Detection and Cryptographic Attestation for Secure Retrieval-Augmented Generation — under peer review, PeerJ Computer Science (Cryptography, Security and Privacy). Preprint & artifacts: Zenodo DOI 10.5281/zenodo.18364920 · Implementation (GitHub) · Manuscript portal.

  • Work in progress — GenOps (governance for enterprise AI in CI/CD); TriArchitect (multi-agent safe migration); RuntimeGuard AI (runtime verification for autonomous agents).

Technical writing & community reach

18+ articles on LinkedIn, Medium, and Hashnode — distributed systems, Kubernetes, Kafka, Spring Boot, RAG pipelines, databases, and AI security. Representative titles include From 50 Million Events to a Single Answer: Building a RAG Pipeline in Spring Boot (2025) and Prompt Engineering vs Context Engineering vs Reasoning Engineering (2026).

Speaking

  • Conf42 DevOps 2026 — invited talk: GenOps: A Governance-Driven Model for Safe, High-Velocity AI in CI/CD Pipelines — session page · recording (YouTube).

Open source

  • FAANG — interview-prep algorithms & patterns (~1.9K GitHub stars, 490+ forks).

  • EmbedGuard — reproducible RAG-security research framework (Docker, tests, benchmarks).

  • faang-system-design — curated system-design notes.

Fellowships & professional memberships

  • Fellow, Hackathon Raptors — UK Community Interest Company 15557917; peer-elected fellowship for sustained builder / hackathon achievement (Fellow #14975).

  • Fellow (FIICSPA), International Institute of Certified and Specialized Professionals and Academics — member ID 08D61A0684.

  • Full Member, Sigma Xi — The Scientific Research Honor Society (member 20269991668, inducted Mar 2026).

  • Member, IEEE — member 102037294.

  • Researcher ID: ORCID 0009-0002-2125-1805.

Peer review & service

Patents

  • Inventor on two granted U.S. patents (platform / fintech–related inventions; details available on request).

Other

  • Google Developer Program (beta) · Google I/O 2023 attendee.
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What I Do

Architecting Simplicity, Engineering for Growth

I specialize in making complex systems secure, scalable, and reliable. Here’s how I help organizations thrive.

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Security Infrastructure & Zero Trust

I design and implement Zero Trust security architectures — from identity and access management to policy-as-code enforcement and PII governance — helping organizations protect critical infrastructure without slowing down engineering velocity.

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Cloud Architecture & Platform Engineering

I design and build resilient, scalable infrastructure on AWS and GCP using Kubernetes, Terraform, and modern cloud-native tools. I create platforms with 99.9%+ reliability that developers love to build on.

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GenAI & AI Security Research

I build LLM-powered developer tools that streamline workflows, and I research adversarial threats to AI systems — including RAG pipeline poisoning and embedding manipulation (EmbedGuard, PeerJ CS under review).

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DevSecOps & Distributed Systems Design

I architect event-driven microservices and CI/CD platforms that handle millions of requests. I help teams embed security into every layer of the development lifecycle, enabling speed and safety simultaneously.

My Journey

Experience & Education

Staff-level engineer with 15+ years turning complex challenges into scalable, secure, and reliable solutions across fintech, e-commerce, AR/VR, and financial services.

2007–2011

Bachelor of Technology — Electrical & Electronics Engineering

RVR JC College of Engineering, Guntur, Andhra Pradesh, India. Graduated with First Class distinction.

Dec 2025–Present

Parafin (Dec 2025–Present) — Staff Security Infrastructure Engineer

Architecting Zero Trust security infrastructure for an $8B+ embedded lending platform powering capital access for businesses on Amazon, DoorDash, Walmart, and TikTok Shop. Leading security mock drills, incident response planning, BC/DR strategy, and PII governance. Operating across a YC-backed, $750M-valued fintech with mission-critical uptime requirements.

Jun 2024–Dec 2025

Meta — Reality Labs (Jun 2024–Dec 2025) — Staff Software Engineer

Led CI/CD modernization (Project Chesterfield) for Quest VR and Ray-Ban Meta products. Built a GenAI-powered migration tool that eliminated 95% of manual onboarding effort and saved $386K/year. Shipped a Unified Build Model metadata service handling 150M+ requests/day at 99.9% reliability. Mentored 6 engineers, 3 of whom were promoted to Staff within 12 months.

Apr 2024–Jun 2024

Raymond James Financial (Apr 2024–Jun 2024) — Lead Software Development Engineer

Delivered a document generation platform processing 8K–12K documents/month with 99.2% success rate. Established a 95% code coverage standard and quality culture across a team of 8 engineers.

Jan 2022–Mar 2024

Wayfair (Jan 2022–Mar 2024) — Technical Architect

Spearheaded a DevSecOps transformation increasing vulnerability scan coverage to 50M+ checks/month and cutting incident response time by 40%. Built a next-generation OAuth 2.0 authentication platform handling 125M+ API calls/week at 99.97% uptime. Selected as 1 of 3 architects from 50+ candidates for the company-wide security roadmap. Mentored 20+ engineers (8 promoted to senior/staff).

Mar 2019–Dec 2021

JPMorgan Chase — CIB (Mar 2019–Dec 2021) — Senior Software Engineer

Developed an escrow platform managing $40B+ in deposits and a Saga-pattern payment microservice processing 10K+ daily transactions. Built a centralized authentication framework adopted by 18+ CIB teams, reducing customer support call volume by 30%.

Dec 2011–Mar 2019

American Express — via TCS (Dec 2011–Mar 2019) — Senior Software Developer

Re-engineered monolithic claims and card-processing systems into microservices architecture, achieving 60% code reduction and 66% faster API response times. Built event-driven B2B integrations handling 2M+ monthly requests across 15+ carrier partners. Migrated COBOL-based loyalty logic to Spring MVC across 30 international markets. Worked across Bangalore, Montevideo (Uruguay), and Phoenix.

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My Toolkit

Engineering Superpowers

15+ years of building mission-critical systems has sharpened a broad toolkit. Here are the areas where I bring the most value — from security architecture to AI/ML systems to distributed infrastructure.

Security Infrastructure & Zero Trust Architecture
95%
Distributed Systems & Microservices
95%
Kubernetes & Cloud (AWS/GCP)
93%
DevSecOps, Policy-as-Code & Cloud Security
92%
CI/CD, GitOps & Release Engineering
90%
GenAI Tooling, RAG Security & LLM Integration
90%
Java, Python, Go & TypeScript
90%
Event Streaming (Kafka) & Async Architectures
88%
Datastores (PostgreSQL, Cassandra, Redis)
85%
Technical Leadership & Mentoring
85%