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Malt Strategy
Christian KhalilCK

Christian Khalil

Full Stack Engineer

€500/day
Paris, FR
3-7 years
Typescript
Next.js
Node.js
PostgreSQL
NestJs

Average response time: 1 hour

About Christian

I build and ship production web applications end-to-end, with a frontend focus. 4+ years working across SaaS, fintech, and agency projects.
Recent work includes leading a Next.js App Router migration that cut load times by 60%, and architecting a standardized data layer that reduced frontend-backend friction significantly.
I work with TypeScript, React, Next.js, NestJS, and PostgreSQL daily. Fluent with AI-assisted development (Claude Code, Cursor) which lets me move faster without cutting corners.

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • AgencyAnalytics
    Full Stack Developer
    March 2024 - Today (2 years and 3 months)
    Canada
    • • Reduced initial load times by 60% via Next.js App Router migration, refactoring routing patterns and maximizing server-side rendering to eliminate client-side bottlenecks.
    • • Extended platform by building new NestJS microservices and implementing OAuth2 authentication, enabling enterprise SSO integration for key accounts.
    • • Cut JavaScript payload by ~40% through granular code splitting and dynamic imports, achieving sub-3s interactive render across all routes.
    • • Designed scalable frontend component system, reducing time-to-feature by 30% through shared design system.
    • • Architected type-safe GraphQL layer with reusable fragments, reducing frontend data bugs by ~40% and API onboarding time to 2 days per new feature.
    • • Collaborated on end-to-end product redesigns with designers and cross-functional teams to ship production-ready features.
    • • Deployed feature flagging and A/B testing infrastructure with GrowthBook, enabling 6+ concurrent experiments to safely ship without feature branches.
    • • Established CI/CD pipeline with Jest + Playwright, achieving 75% code coverage and blocking 95% of regressions before merging to production.
    • • Integrated AI-powered code review (Claude, Codex) into the PR workflow, cutting average review cycle time by a day.
    Next.js Playwright Typescript NestJs PostgreSQL
  • SCADS
    Full Stack Developer
    February 2023 - January 2024 (11 months)
    • • Migrated legacy React SPA to Next.js SSR, improving organic search visibility by 300% (measured by crawlable page depth) and reducing load time from 5.2s to 1.8s.
    • • Owned the end-to-end technical lifecycle as the sole web developer, responsible for the full-stack architecture, deployment, and security of decentralized applications.
    • • Integrated Web3 functionalities, including token swap interfaces and secure wallet transaction handling.
    • • Established automated testing by implementing Cypress E2E suites to reduce production regressions.
    React.js Next.js Node.js Typescript Cypress
  • Uma-lab
    Full Stack Developer
    May 2022 - January 2023 (8 months)
    • • Improved Core Web Vitals across 6 client sites by average 15%, maintaining 95+ Lighthouse scores through standardized performance and accessibility audits.
    • • Built a reusable component library, reducing design-to-code time by 40% and establishing a single source of truth for design consistency.
    • • Implemented responsive interfaces for high-fidelity designs using Next.js and TailwindCSS, delivering pixel-perfect layouts across all device sizes.

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Education

  • Bsc.
    IU International University of Applied Sciences
    Bsc.

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