Available for platform & DevOps work

Jeevan P Rai

Systems EngineerPlatform BuilderDevOpsAI

Building reliable systems before beautiful interfaces. Infrastructure that stays up, platforms teams can trust, products that ship.

Projects Infrastructure Lab GitHub Contact

jeevan@kronos-nexus — zsh

❯whoami

Jeevan P Rai — systems & platform engineer. Runs a self-hosted, multi-VLAN homelab. Type help to explore.

❯

try: whoami · projects · lab · status · clear

Isolated VLANs

Proxmox

Virtualization host

pub.dev

Published package

Self-host

DNS · Proxy · VPN · Files

Current mission

Platform engineering, end to end.

Full-stack developer and DevOps engineer at Adroitx Limited (UK), working remotely from India. I design and operate the layers most people never see — networks, virtualization, CI/CD, and self-hosted services — then build the products that run on top of them. The homelab below isn't a toy; it's where I prove infrastructure decisions before they reach production.

Featured projects

Things I've built & shipped.

Public work and products I run. Deeper case studies (problem → architecture → lessons) are being written for each.

Vastavik

Media provenance & deepfake-detection platform

Active dev

An end-to-end media authenticity system: a 6-layer, fail-closed detection pipeline — provenance → forensics → detector farm → commercial ensemble → fusion → policy — across image, video and audio, paired with on-chain ownership, native mobile + web clients, and a separate business (KYB) verification track. I architected the ML, backend, computer-vision and blockchain layers.

ML / SLM engine

Vastavik-DF distilled detectors (EfficientNetV2 · ViT · VideoMAE · wav2vec2) + Vastavik-Judge SLM. Knowledge distillation, LoRA continual-learning with replay, champion/challenger shadow-promotion.

Backend · Node/TS

124 files. Capture-source classifier (EXIF/XMP/QuickTime), C2PA Content Credentials verification, pluggable deepfake providers + ensemble, BullMQ workers, S3, Stripe, RBAC.

CV matcher · FastAPI

Raw-vs-edit forensics — SIFT+RANSAC geometry, residual/blob diff, video pHash keyframe alignment, audio onset+MFCC, evidence heatmaps.

Blockchain · Go

Hyperledger Fabric chaincode: register / verify / transfer media ownership on-chain.

Clients

SwiftUI iOS (81 files) + Java Android (95 files): upload, verify-with-original, presigned S3, review flows.

Web · React/TS

Admin panel, creator portal, marketing + verified sites — 4 front-ends over a Node BFF.

KYB track · NestJS

Business/website verification: DUNS/Tax/VAT/registry, DNS/WHOIS/SSL/reputation, Playwright, badge/QR embed, per-site Stripe, continuous re-verification.

Docs

9 architecture docs, OpenAPI spec, ER + Mermaid diagrams, security audit & remediation plan.

Deepfake detectionApplied ML / SLMDistillationCV forensicsC2PAHyperledger FabricNode / TSFastAPISwiftUIAndroidReactNestJSAWS · S3Stripe

fetch_pages

Open-source Flutter/Dart package · pub.dev

Published

A Flutter package that fetches JSON pages from a server for use with json_dynamic_widget — letting apps render server-driven UI without shipping a new build. Published on pub.dev with a clean, documented API.

FlutterDartServer-driven UIOpen Source

pub.dev Source

YouID

Identity product · web + API services

Live

An identity-focused product running as a web app backed by dedicated API services. Self-hosted and operated on the Kronos-Nexus platform.

Public case study in progress.

VerifyCall

Call verification — web product

Active dev

A call-verification web product. Private codebase; public case study to follow.

Yantra Notification System

Notification delivery service

Active dev

A notification delivery system built for the Kronos-Nexus platform.

Details pending — write-up to follow.

KVG Examination Portal

Flask exam / scholarship-test platform

Shipped

Online examination and scholarship-test platform for KVG College of Engineering, built with Python/Flask by a two-person team under a tight deadline. Handled registration, timed tests and grading.

PythonFlaskMySQL

Source

Infrastructure lab

Kronos-Nexus — a homelab that behaves like production.

A segmented, self-hosted platform: a Proxmox host running the workloads, an OpenWRT router on a Raspberry Pi 4 enforcing VLAN isolation and firewalling, WireGuard for remote access, and a stack of services behind a TLS reverse proxy. Hover a node to see its role.

Internet WAN uplink. Only WireGuard and the HTTPS reverse proxy are exposed inbound.

OpenWRT · RPi 4 Router + firewall. 5 isolated VLANs (office, servers, IoT, home, mgmt), WireGuard VPN, DNS.

WireGuard Encrypted remote access with per-peer, least-privilege firewall rules.

Proxmox Virtualization host running the VMs and containers below.

Pi-hole + Unbound Network-wide DNS filtering with a recursive resolver.

Nginx proxy TLS reverse proxy (Let's Encrypt) terminating all public subdomains.

Nextcloud Self-hosted file storage and sync.

Kubernetes Container orchestration for platform workloads.

Grafana Prometheus + Grafana for metrics, dashboards and monitoring.

Stack

Proxmox
OpenWRT
Kubernetes
Docker
WireGuard
Nginx
Pi-hole
Unbound
Nextcloud
Prometheus
Grafana
Cloudflare
Let's Encrypt

Principles

VLAN isolation by trust zone
Least-privilege firewalling
TLS everywhere, one proxy
Reproducible, documented config

Production systems

Services I run in the open.

Public-facing endpoints served from the platform, behind the TLS proxy.

youid.kronos-nexus.comProduct portfolio.kronos-nexus.comSite files.kronos-nexus.comStorage DNS · Pi-hole + UnboundFiltering WireGuard VPNRemote Reverse proxyNginx · TLS

Engineering timeline

The path so far.

Jan 2025 — Present

Full-Stack Developer & DevOps Engineer

Adroitx Limited, UK · Remote from India

Full-stack development and DevOps for a UK startup — building applications and the CI/CD and infrastructure that ship and run them.

Earlier

Software Engineer

Tayana Mobility Technologies

Built software for the mobility sector with a focus on scalable, performant applications.

2022 — 2023

Web / App Development Intern

Anasoft, Sullia · India

Delivered web and Android projects for local institutions and businesses — college automation systems, an e-commerce site, and static sites.

2022

Examination Portal

KVG College of Engineering

Built a scholarship-test / examination platform with a two-person team under a tight deadline.

Toolbox

What I work with.

Platform & DevOps

Proxmox
Kubernetes & Docker
OpenWRT / networking
Nginx · reverse proxy · TLS
WireGuard
Prometheus & Grafana
GitOps · CI/CD
Linux administration

Languages

Python
JavaScript
Java
Dart
PHP
C / C++
HTML / CSS

Frameworks & App

Flask / Django
Flutter
Spring Boot
Android
MySQL / PostgreSQL
Bootstrap

Contact

Let's build something reliable.

Open to platform engineering, DevOps and full-stack work, and always happy to talk infrastructure, self-hosting, or a good systems problem.

Email GitHub LinkedIn pub.dev