Curriculum Vitae

Sahil Langoo

Full Stack Systems Engineer & Co-Founder • Kashmir, India

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Executive Summary

Innovative Full Stack Systems Engineer with a B.Tech in Computer Science Engineering (CGPA: 7.07) from the University of Kashmir and co-founder at SquadCoders. Proven expertise in crafting high-performance, responsive web architectures, distributed edge computing proxies, and AI integrations. Demonstrated ability to boost website performance by 30-40% (sub-50ms TTFB, 0.00 CLS) and increase organic reach and user engagement by 20-30%. Dedicated to building software that is fast by default, zero-waste, and engineered with strict type safety.

Professional Experience

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

Technical Core Competencies

Languages & Core

TypeScriptJavaScript (ES2023+)PHPPythonSQLGoCC++HTML5CSS3 / SASS / OKLCHBash

Frameworks & Web Architecture

Astro 7React 19Next.jsHonoNode.jsExpressTailwind CSS v4daisyUI 5TwigSymfonyTanStack RouterTanStack QueryPartytownWordPress

Cloud & Edge Infrastructure

Cloudflare Pages & WorkersCloudflare TurnstileCloudflare R2Cloudflare WAF & DNSMeta CAPI GatewaysVercelDockerAzureGitHub Actions CI/CD

Databases, Storage & Quality Tooling

PostgreSQLSQLite / Cloudflare D1MariaDBCloudflare KVRedisMongoDBGit & GitHub CLIpnpmBunWranglerPlaywrightSentryPostmanZodFigmaAdobe PhotoshopAdobe IllustratorPWA / TWALM Studio / Local SLMs (Gemma)

Education & Academic Credentials

CGPA: 7.07 / 10.02021 — 2023

University of Kashmir (North Campus)

Bachelor of Technology in Computer Science Engineering (B.Tech CSE)

Baramulla, Kashmir, India

Key Coursework:
Data Structures & AlgorithmsObject Oriented ProgrammingCloud ComputingSoftware EngineeringWeb Technologies
CGPA: 6.22 / 10.02016 — 2019

Kashmir Govt Polytechnic

3-Year Diploma in Computer Science Engineering

Srinagar, Kashmir, India

Key Coursework:
Computer ProgrammingDatabase ManagementComputer Networks

Professional Certifications & Accreditations

Meta (Facebook) / Coursera2024

Meta Front-End Developer Professional Certificate

Verified Credential
Frontend Masters (Scott Moss)2024

Complete Next.js Developer

Verified Credential
Scaler Masterclass2024

Ecommerce Platform Using React

Verified Credential
Google / Coursera2023

Crash Course in Python

Verified Credential
Udemy / ZTM (Andrei Neagoie)2023

Full Stack Web Development (Zero To Mastery)

Verified Credential