Full Stack Systems Engineer & Co-Founder

Engineering resilient edge systems, high-throughput web architectures & crafted interfaces.

I am Sahil Langoo, based in Kashmir, India. I engineer high-performance web applications, developer tooling, and distributed edge architectures with @SquadCoders and open source.

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Sahil Langoo — Full Stack Systems Engineer & Systems Architect
Available for workKashmir, India
Selected Work

Engineered Projects & Systems

web app2024

SoulMedia Creative Agency Web Platform

A dynamic creative services and digital media platform with CMS service layer, Cloudflare R2 asset syncing, and Sentry error telemetry.

astrotypescriptcloudflare-r2sentry
web app2024

Hotel Akbar Sonamarg Web Platform

A high-performance luxury hospitality web platform engineered with Astro 7.2, DaisyUI v5, and full legacy WordPress-to-Astro 301 redirection matrix.

astrotailwindcssdaisyuitypescript
All Projects

1,923 contributions in the last year

Verified Stream

@sahillangoo • Full Stack Architecture & Open-Source Engineering

@SquadCoders@sahillangoo
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Recent Verified Commits & Pull RequestsLatest verified commits
feat

feat: add FAQ content collection architecture and populate service FAQs with FAQPage schema

SquadCoders/soulmedia-website•Aug 17, 2026
#9c4f1e0
fix

fix: harden client-side event handlers, ESC scroll unlock, and contact form async submission

SquadCoders/roohyaseen-portfolio•Aug 15, 2026
#8f2a1b9
feat

feat: add site quality enforcer integration and update project scaffolding

SquadCoders/hotel-akbar-sonmarg•Aug 15, 2026
#c4e901d
feat

feat(backend): Experian credit-report OTP proxy and Hono API gateway integration

ecspl/websites•Aug 13, 2026
#b1d92a4
chore

chore(deps): twice-weekly Dependabot schedule and Corepack pnpm 11.21.0 supply chain pinning

ecspl/websites•Aug 12, 2026
#9e41bc2
Career History

Experience & Production Roles

Lead Software Engineer & Co-FounderCurrent

SquadCoders • Kashmir, India
2023 — Present
  • ›Co-founded and architected the core web platform at SquadCoders, delivering sub-50ms global TTFB and 0.00 CLS across 6 production client platforms by leveraging Astro 7 SSG, TypeScript, and Cloudflare Pages.
  • ›Engineered bespoke web systems including SoulMedia, Hotel Akbar Sonamarg, and TravelKit, reducing bundle payloads by 65% and achieving 100/100 Lighthouse performance benchmarks through zero-JS baselines.
  • ›Developed and launched 10+ high-performance websites, achieving an average page-load improvement of 30% and a 15% boost in client project conversion rates.
  • ›Developed custom zero-dependency build-time quality hooks in Node.js, eliminating broken links and asset discrepancies prior to static deployment.
Astro 7TypeScriptTailwind CSS v4daisyUI 5Cloudflare Pages & R2ZodSentryDockerLenis

Full Stack DeveloperCurrent

Taffin.Tech • Remote, Srinagar, Kashmir
2024 — Present
  • ›Spearheading the engineering of an AI-integrated job board platform for a French startup, driving a 25% increase in user engagement.
  • ›Architecting high-performance responsive web user interfaces using Tailwind CSS, Twig, and React integrated with a Symfony backend, reducing page-load times by 40%.
  • ›Implementing strict EU-compliant GDPR privacy protocols and dynamic SEO rendering pipelines, boosting organic search traffic by 30%.
ReactTailwind CSSTwigSymfonyPHPAI IntegrationDynamic SEOGDPR Compliance

Systems & Backend Integration Engineer

Enterprise Web Systems (@ecspl) • Remote
2021 — 2024
  • ›Engineered distributed Hono API gateways on Cloudflare Workers for Experian credit OTP proxies and Meta CAPI server-side dispatching, maintaining 99.99% uptime and sub-100ms p99 execution latency.
  • ›Triaged production Sentry exception telemetry across 90-day intervals, resolving client-side race conditions and payment transport failures to elevate checkout transaction success rate by 14%.
  • ›Authored automated Playwright E2E regression suites with CI build triggers across Vercel and Cloudflare, reducing deployment cycle times by 35% while enforcing strict pnpm lockfile supply-chain integrity.
HonoTypeScriptCloudflare WorkersNode.jsPythonGoDockerSentryPlaywrightRazorpayMeta CAPI

Full Stack Trainee

Elance Technologies • Srinagar, Kashmir, India
Jan 2023 — Jun 2023
  • ›Completed an intensive 6-month full-stack development curriculum mastering HTML5, CSS3, JavaScript, PHP, Bootstrap, and MariaDB.
  • ›Engineered a full-stack database-backed application integrating third-party APIs and dynamic responsive UI layouts.
  • ›Collaborated on a team development sprint optimizing web accessibility and cross-device performance, contributing to a 40% increase in mobile traffic.
PHPJavaScriptMariaDBBootstrapHTML5 / CSS3REST APIs

Recent Engineering Essays

All Writing ›

Digital Garden & Technical Notes

All Notes ›
Engineering Discipline

Core Architecture Principles

KISS & YAGNI

Simplicity over premature abstraction. Build what is needed with precision and zero unnecessary dependencies.

Performance by Default

Static HTML generation first, Partytown worker offloading, zero main-thread block, 0.00 CLS, and instant global TTFB.

Tactile UI Craft

High-contrast typography, calibrated OKLCH color systems, and responsive micro-interactions (scale on press, smooth scroll).

Type Safety & Quality Gates

End-to-end type safety, Zod runtime schema validation, and automated build-time link and asset verification.

Available for Systems Architecture & Technical Leadership

Open to high-impact software engineering roles, distributed edge systems design, and select technical consulting engagements.

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