Initiate Sequence ↓

The Engineer

Name
Aman Kumar
Location
Bangalore, India
Role
Full-Stack Engineer · Open Source Contributor
Focus
Systems Architecture · Real-Time Data · Security-First Design

I build systems that hold under pressure. My work lives at the intersection of performance engineering and security architecture; where every design decision is deliberate and every abstraction earns its place.

From Go microservices handling concurrent event streams to React interfaces that surface complex data cleanly, I operate across the full stack with the same standard: robust, observable, and built to scale without surprise.

I'm an active open source contributor ; working across production-grade infrastructure projects spanning Kubernetes operators, distributed systems, security tooling, and scientific computing platforms. I contribute where the code actually runs at scale.

Security is not a feature I add after the fact. It's a constraint I design around from the first line ; production-grade authentication, cryptographic integrity, and failure-tolerant pipelines are the baseline, not the finish line.

Tech Arsenal
Go
React
TypeScript
Node.js
PostgreSQL
Docker
Tailwind CSS
Next.js
Redis
AWS / Vercel

The Arsenal

BehaviorLens

Real-Time User Behavior Observability

Go-powered pipeline ingesting browser events through a stateful rule engine. Detects hesitation, navigation loops, and checkout abandonment in real-time. Live Astro/React dashboard with 2-second polling.

GoReactAstroZustandDocker
Stateful Rule Engine Goroutine-per-user Timers Sub-microsecond Reads Kafka-Ready Sharding

HarmoHelp

Hormonal Wellness Platform

Three-service architecture ; React 18 SPA, Node.js API, Go authentication microservice. Containerized with Docker Compose. Production-grade security with RS256 JWTs, Argon2id hashing, Razorpay payments, and sliding-window rate limiting.

React 18Go 1.22Node.jsExpressPostgreSQLDockerRazorpay
RS256 JWT ; 2048-bit RSA Argon2id Password Hashing Token Rotation via PostgreSQL Transactions Razorpay HMAC-SHA256 Verification Multi-stage Docker (scratch image)

Chemidex

Atomic Architect · 3D Science Discovery Platform

Production-grade atomic structure platform shipped as a single HTML file. Build atoms particle-by-particle with Three.js 3D visualization and real-time quantum mechanical simulations; progressively unlock all 118 elements through experimentation. Includes a Reaction Laboratory, ChemistDex compound encyclopedia (200+ entries with rarity tiers), and 50+ achievements with a 3D virtual trophy case.

Three.jsWebGLGLSLJavaScriptCanvas 2D
Bohr-Sommerfeld + QM Probability Density Models 118-Element Gamified Discovery Real-Time Atom Builder (<16ms Updates) Zero Build Steps · Runs in Any Browser

Math-Reality-Edu

Interactive Physics Education Platform

Next.js 14 single-page experience with 11 interactive Canvas visualizations ; Fourier transforms, quantum wave packets, Lorenz attractors, Mandelbrot sets. Scientifically rigorous with an accuracy badge system.

Next.js 14TypeScriptTailwind CSSFramer MotionKaTeXCanvas 2D
7 Hand-Authored Canvas 2D Simulations Mandelbrot with Smooth Iteration Coloring Lorenz Attractor (Euler Integration) Gaussian Wave Packet Dispersion Zero TypeScript Errors, Strict Mode

Open Source

Active contributor to production-grade open source infrastructure ; distributed systems, Kubernetes operators, security tooling, scientific platforms, and high-performance data pipelines. I go in where the code runs at scale.

Contributed Organisations
Methodology

I use AI to accelerate codebase onboarding ; rapidly mapping architecture, tracing call paths through unfamiliar systems, and constructing controlled environments designed to surface bugs before they reach production. The target is failure modes that cause real data loss, service disruption, or audience impact at scale: the kind of bugs that are invisible until the system is under load, and catastrophic once they surface.

Developer Card

Tap card to explore · Double-tap to zoom · Swipe to navigate

Legendary · Full-Stack Aman Kumar
Merged PRs
0
"Finds the bugs production can't afford to have."
Merged PRs
58
Reach
18 Orgs
Bug Kill
85%
Concur
8 Fixed
Infra Lvl
CNCF
★★★ GITHUB · 2025 EDITION · 001/001
Stat Analysis · Merged PRs
58 Merged Pull Requests
21 Repos
eclipse-sw360 ; 14 PRs
Enterprise Java compliance tooling for global software orgs. Thrift RPC layer, REST API, attachment lifecycle ; the full stack of a complex codebase.
volcano-sh ; 8 PRs
CNCF batch scheduler for Kubernetes ML workloads. Scheduler-level correctness fixes ; the kind that can silently starve jobs at scale.
Kuadrant/mcp-gateway ; 3 PRs
Three-PR sequence fixing progressively deeper layers of the same session cache bug: map race → copy-on-write → Redis context cancellation.
hyperledger-labs/fabric-token-sdk ; 3 PRs
Blockchain asset tokenization. Fixed 5 silent asset-safety bugs across selector, storage, and HTLC subsystems in a single PR.
+ 17 more organizations
cilium · karmada · kro · fluxcd · rattler · AIDRIN · openyurt · kube-burner · kyverno · HSF/phoenix · edulinq · autograder · flux-operator · compliance-trestle · flix2
Why Elite

58 PRs across 21 distinct production systems means rapid, deep codebase onboarding across Go, Java, Rust, Python, and TypeScript ; every single time, cold, no handholding.

Stat Analysis · Reach
18 Organizations
5 Langs
Go ; 11 orgs
Kubernetes ecosystem: volcano, cilium, karmada, kro, fluxcd, openyurt, kube-burner, kuadrant, edulinq, agentcube, kyverno. Goroutines, channels, scheduler internals.
Java ; 1 org, 14 PRs
eclipse-sw360 alone. Deep familiarity with the Thrift RPC layer, Spring REST controllers, and the attachment/release lifecycle across a massive enterprise Java codebase.
Rust ; 1 org
conda/rattler ; package resolution engine. Fixed bz2 cache state being overwritten by zst state, and timestamp-based dedup logic in resolvo solver.
Python ; 2 orgs
AIDRIN (AI data readiness), compliance-trestle (OSCAL). Fixed HDF5 fill value handling and diamond dependency resolution in profile composition.
TypeScript ; 1 org
HSF/phoenix ; scientific event visualization for particle physics. Fixed stale outline state on track extension in a WebGL/Three.js renderer.
Why Elite

Cross-ecosystem fluency at this depth is rare. The same precision applies in Go schedulers, Java Thrift layers, Rust resolvers, and Python data pipelines. That's a way of thinking, not a list of languages.

Stat Analysis · Bug Kill
Bug Fix Rate
85%
Silent Failures ; 9 PRs
sw360 returning 200 on write failure, fluxcd logging success after reconcile failure, AIDRIN returning SUCCESS on import error. All ship without a test failing.
Race Conditions ; 8 PRs
Concurrent map writes in Kuadrant session cache, submission limit race in autograder, eviction rollback atomicity in volcano. Non-deterministic. Silent until load hits.
Resource Leaks ; 6 PRs
Thrift client leaks in sw360, Redis session context leak in Kuadrant, token lock leaked on bad quantity in fabric-token-sdk. Never surface in testing.
Scheduler Correctness ; 5 PRs
Double-counting inqueue resources in volcano's proportion and capacity plugins, nil panic in hierarchical queue mode, uncommitted eviction propagation.
Data Integrity ; 5 PRs
Obligation accumulation in sw360 DOCX reports, CycloneDX metadata loss on release creation, clearing state priority logic errors.
Why Elite

These bugs don't surface in CI. They appear under production load with real data and real audiences. Finding them requires reading distributed systems code at the level it was designed ; not the level it was documented.

Stat Analysis · Concurrent Fixes
Concurrency Bugs Killed
8
Kuadrant/mcp-gateway #872 → #888 → #911
Concurrent map write race in session cache. Three-PR sequence: mutex fix → maps.Clone copy-on-write → context.Background() on Redis session closer.
volcano-sh/volcano #5010 + #5067 + #5130
Preemption eviction rollback wasn't atomic ; evictions from nodes we didn't use got committed. priority/high label. Three linked PRs fixing the same class of bug in different plugins.
edulinq/autograder-server #207
Submission limit check passed by two goroutines before either committed. Classic TOCTOU race under concurrent requests.
fabric-token-sdk #1530
Token lock acquired in sherdlock selector, error returned early on bad quantity, lock never released. Goroutine holds lock until process restart.
edulinq/autograder-server #222
Missing Unlock() after TryLock in stale lock cleanup path. Goroutine exits the if-block holding the lock ; deadlock waiting to happen.
Why Elite

Concurrency bugs are non-deterministic, often silent, and only surface under specific timing conditions. Finding 8 across 5 different production codebases is a pattern of thinking ; not luck.

Stat Analysis · Infrastructure Level
CNCF Critical Infrastructure
Planetary
cilium/cilium #43902 ; Backported: v1.18 + v1.19
eBPF-based networking for Kubernetes. Fix was serious enough for maintainers to ship to two stable release branches ; meaning it landed in production clusters worldwide.
volcano-sh/volcano ; 7 PRs, priority/high
CNCF batch scheduler running ML training jobs at scale. Fixes include nil panic in hierarchical queue mode and double-counting inqueue resources in the scheduler core.
karmada-io/karmada ; Divide-by-zero in spread constraint
Multi-cluster federation control plane. Divide-by-zero in the spread constraint calculation ; a crash in production multi-cluster orchestration, triggered at runtime.
fluxcd/flux2 ; 2 PRs
GitOps delivery for Kubernetes. Fixed exit code 0 on resume failure and success log emitted after reconciliation error ; both invisible failures in automated pipelines.
kubernetes-sigs/kro ; 2 PRs
Kubernetes Resource Orchestrator. Fixed flaky integration test and CRD deletion handling so RGDs don't get stuck in Active state permanently.
Why Elite

When cilium backports your fix to two stable releases, the bug was real, the fix was correct, and the reviewers trusted the code enough to ship it to production clusters running at planetary scale.

System Telemetry

0
Projects Delivered
0
Core Languages
0
Interactive Visualizations
Problems Solved
Activity Grid

Open Channel

Ready to build something precise.

Whether it's a system that needs hardening, an architecture that needs rethinking, or a problem that needs someone who won't take shortcuts ; I'm listening.