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Latest Writing

04 Articles
01/Deep Learning Foundations: Gradient Descent, Multilayer Backpropagation Calculus & Loss Optimization
02/How Neural Networks Learn: Activation Functions, Weight Initialization & Optimization Dynamics
03/Mermaid Architectural Diagram Studio: Full Design & Color Stress Test
04/Calculus & Geometry: 2D Function Analysis, Tangent Slopes & Interactive Curve Plotting

© 2026 Ayush Kumar.•All rights reserved.

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Ayush Kumar

AI Software Engineer & Product Builder

Backend and fullstack engineer obsessed with distributed systems, AI infrastructure, and building things that scale. Currently shipping voice AI pipelines at Neurodrift.ai and building ByteLaps — an open-source memory engine for AI agents.Backend and fullstack engineer obsessed with distributed systems, AI infrastructure, and building things that scale. Currently shipping voice AI pipelines at Neurodrift.ai and building ByteLaps — an open-source memory engine for AI agents.

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NeuroDrift
July, 2026 Present

AI Engineer

NeuroDrift
Building Scalable Multimodal Voice Agents, RAGs, Knowledge Retrieval Systems
UPDOT
Sept, 2025 May, 2026

Software Development Engineer

UPDOT
Built Node.js (Hono) middleware integrating Webkul with Shopify, implemented webhooks and event bus syncing to PostgreSQL.Engineered GIN + trigram search with Redis caching, cutting product query latency ~60%.
Sunshine Cosma
Oct, 2024 Sept, 2025

Fullstack Developer

Sunshine Cosma
Redesigned WebRTC conferencing using mediasoup SFU and Redis signaling, reducing latency ~30% and bandwidth 40%+.Built OTP authentication and an RBAC CMS using Next.js, Drizzle, PostgreSQL.
Stellar Code
Apr, 2024 Sept, 2024

Fullstack Developer Intern

Stellar Code
Developed Node.js GameFi club service using DynamoDB on AWS ECS supporting 2M+ MAU.Built automated transaction-summary bot deployed on EC2 with Nginx and PM2.
Initializing 3D Graph Simulation...

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01. Highlighted Projects

all projects

Multimodal Document-Based Voice AI Agent

Q3 2024

A real-time, document-augmented Voice AI assistant workspace engineered with LiveKit Cloud WebRTC streaming and the Python Agents SDK. Features session-isolated dynamic RAG retrieval powered by Qdrant Vector DB, hot-swappable live prompt directives, SQLite conversation persistence, and dedicated transcript review screens.

Next.jsTypeScriptTailwind CSSLiveKitPythonQdrantBetter AuthSQLiteDocker
code live

Bookmarked Android: A Simple Viewer for My Bookmarked Content

Q2 2024

A performant, zero-bloat native Android client engineered with Jetpack Compose, Kotlin Coroutines, and Room Database to deliver distraction-free article reading on resource-constrained devices. Features background synchronization via WorkManager, smart tag categorization, offline caching, and responsive typography.

AndroidKotlinJetpack ComposeTypeScriptNode.jsDocker
code

02. Writings & Thoughts

all writing

Deep Learning Foundations: Gradient Descent, Multilayer Backpropagation Calculus & Loss Optimization

Aug 15, 2026

A rigorous, mathematical and architectural deep dive into artificial neural networks, multivariable vector calculus, gradient descent dynamics, backpropagation derivations, and interactive loss landscape optimization.

Machine LearningNeural NetworksCalculusGradient DescentAIMathematics

How Neural Networks Learn: Activation Functions, Weight Initialization & Optimization Dynamics

Aug 16, 2026

An in-depth, mathematical and interactive guide into how neural networks learn—exploring activation non-linearities (Sigmoid, ReLU, Tanh), Xavier/He weight initialization, learning rate schedules, and optimization dynamics.

Machine LearningNeural NetworksDeep LearningOptimizationAIMathematics

Mermaid Architectural Diagram Studio: Full Design & Color Stress Test

Aug 16, 2026

An intensive architectural showcase featuring 10 custom-colored Mermaid diagrams—from microservice topology and database ER schemas to concurrent WebRTC audio pipelines and state machines.

MermaidArchitectureSystem DesignDatabaseTestingDiagrams