Hi, I'm Neeraj Kumar Singh 👋

I build reliable systems that let developers shine.

From crafting secure cloud platforms to building the GenAI-powered tools that modernize AR/VR development at Meta, my passion is turning complex challenges into simple, elegant solutions.

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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 led me from tinkering in home labs to architecting the build infrastructure for AR/VR at Meta. Along the way, I’ve had the privilege of strengthening Wayfair’s security, launching a crypto trading platform that handles real-world assets, and learning that the most powerful systems are the ones that work so seamlessly you forget they’re even there.

I thrive on turning complex, distributed systems into reliable (and, let’s be honest, slightly boring) platforms. My goal is to automate the pain points away, allowing developers to focus on what they do best: innovate. Whether I’m sketching out system diagrams or trying to explain blockchain to my five-year-old (a work in progress), I’m always searching for the next puzzle to solve.

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What I Do

Architecting Simplicity, Engineering for Growth

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

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Cloud Architecture

I design and build resilient, scalable infrastructure on AWS and GCP, using Kubernetes, Terraform, and modern cloud-native tools to create platforms that just work.

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GenAI Developer Tools

I build intelligent, LLM-powered tools that streamline development, from static analysis to context-aware automation, helping developers ship faster and smarter.

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DevSecOps & Platform Engineering

I help teams build security into their development lifecycle, from implementing policy-as-code to enabling zero-downtime deployments, fostering a culture of speed and safety.

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Distributed Systems Design

I architect and implement robust microservices and event-driven systems capable of handling millions of requests without breaking a sweat.

My Journey

Experience & Education

I’m a hands-on software architect with over 15 years of experience turning complex challenges into scalable, secure, and reliable solutions. Here’s a look at my journey.

2007-2011

Bachelor of Technology

I earned my degree in Electrical & Electronics Engineering, graduating with First Class distinction.

2024-Present

Meta (2024–Present) — Staff Software Engineer

I’m currently helping modernize the AR/VR build infrastructure, where I’ve cut build failures by 99% and saved over 22,000 compute-hours a month. I also shipped a GenAI-powered refactoring tool that automates service onboarding, removing 95% of the manual effort.

2024

Olliv Coinflip (2024) — Principal Architect

In just four months, I led the design and delivery of a high-throughput crypto-trading platform on AWS EKS and Kafka, achieving 12,000 TPS with a P99 latency of under 50ms. I introduced Saga-pattern microservices and GitOps pipelines to enable zero-downtime releases.

2022-2024

Wayfair (2022–2024) — Technical Architect

I spearheaded a DevSecOps transformation that increased vulnerability scan coverage to over 50 million checks a month and accelerated incident response by 40%. I also built a next-generation authentication server to handle 125 million API calls per month and had the privilege of mentoring over 20 engineers.

2019-2021

JPMorgan Chase (2019–2021) — Senior Software Engineer

I developed a real-time payment microservice that processed over 10,000 transactions a day, using the Saga pattern to ensure data consistency. I also unified data from three legacy systems, which helped cut customer support call volume by 30%.

2015-2019

American Express – International Insurance Services (2015–2019) — Senior Software Developer

I re-engineered a monolithic claims application, improving its response time by 66%. I also built event-driven notification systems and microservices to manage carrier and claims data.

2011-2015

American Express – Card Processing & Membership Rewards (2011–2015) — Senior Programmer

I maintained a high-volume IMS/DB2 card-processing system and automated batch monitoring to significantly improve reliability. I also played a key role in migrating COBOL-based loyalty logic to a modern Spring MVC architecture, improving maintainability across 30 international markets.

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My Toolkit

Engineering Superpowers

Over the past 15 years, I’ve learned that the right tools and techniques can make all the difference. Here are the areas where I bring the most value, helping teams build reliable systems and foster a culture of innovation.

Distributed Systems & Microservices
95%
Kubernetes & Cloud (AWS/GCP)
93%
DevSecOps, Policy-as-Code & Cloud Security
92%
CI/CD, GitOps & Release Engineering
90%
GenAI Tooling & Prompt Engineering
88%
Java, Python, Groovy, & JavaScript
90%
Event Streaming (Kafka) & Async Architectures
88%
Datastores (PostgreSQL, Cassandra, Redis)
85%
Observability & Performance Testing
82%
Technical Leadership & Mentoring
80%
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