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Karan RaiKR

Karan Rai

Senior Full Stack Engineer

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

About Karan

⭐️⭐️⭐️⭐️⭐️ "Order at home, peace in the soul."
Software Engineer | CRM | ERP | SaaS | Dashboards | Mobile | AI
Every fast-growing company hits the same wall: systems can't keep up, processes become bottlenecks, and your team spends more time managing chaos than doing real work. That's where I come in. For 10+ years, I've turned stuck operations into well-tuned machines — with custom software that solves the right problem, the right way, from day one.
Sales has its tool, logistics has theirs, finance lives in Excel, and nobody's on the same page. Sound familiar? I take those scattered pieces and integrate them into one clean system — where your team finds what they need without asking, approvals flow automatically, and dashboards show the full picture before your coffee gets cold.
Full stack, no middlemen. React, Next.js, Node.js, Python, FastAPI, Golang, React Native, Flutter, PostgreSQL, Redis, and AI applied where it actually saves time.
What I build:
→ CRMs & ERPs shaped around how your team really works
→ SaaS products from napkin sketch to paying customers
→ Real-time dashboards managers actually trust
→ Native iOS & Android apps, perfectly synced
→ Workflow engines that kill repetitive manual work
→ Practical AI — demand forecasting, anomaly alerts, natural-language queries
→ API integrations that plug into what you already use
Every system is built to deliver ROI from week one: fewer manual steps, fewer errors, and 500+ hours a year handed back to your team.
I prototype fast, check in constantly, and ship on day one — clean code, CI/CD, and security that lets you sleep at night.
Why me?
✔ 10+ years turning operational chaos into real savings
✔ Web, mobile, backend, AI — one developer, zero coordination cost
✔ Fast delivery that holds up, no rework surprises
✔ NDA guaranteed
✔ I don't just close contracts, I make projects win
Skills: React · Node · Python · Next.js · TypeScript · PostgreSQL · APIs · Microservices · CI/CD · CRM · ERP · SaaS · Dashboards · AI
  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Dextra Labs
    Senior Full Stack Engineer
    E-COMMERCE
    April 2022 - December 2024 (2 years and 8 months)
    Brunoy, France
    • • Resulted in a 100% increase in user engagement and 40% reduction in loading times by leading UI/UX improvements with React, Redux, and Next.js.
    • • Elevated customer satisfaction by 30% using Figma for UI/UX design and Tailwind CSS for styling.
    • • Implemented RESTful APIs using Node.js/Express framework, improving the scope of real-time UI/UX updates.
    • • Facilitated secure Stripe integration with over $500K monthly by managing APIs on Node.js/Express server.
    • • Created reusable React component libraries for scalability and maintainability.
    Node.js React.js Web development DevOps Database administration
  • TechNova Digital
    Full Stack Engineer
    May 2021 - March 2022 (10 months)
    Kyiv, Ukraine, 02000
    • • Resulting in a 100% increase in user engagement and 40% reduction in loading times, oversaw UI/UX improvements with React, Redux, and Next.js.
    • • Elevated customer satisfaction by 30% using Figma for UI/UX design and Tailwind CSS for styling.
    • • Implemented RESTful APIs using Node.js/Express framework, improving the scope of real-time UI/UX updates.
    • • Facilitated secure Stripe integration with over $500K monthly by connecting and managing APIs on Node.js/Express server.
    • • Created reusable React component libraries for scalability and maintainability.

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Education

  • IN SCALABLE WEB DEVELOPMENT
    IN SCALABLE WEB DEVELOPMENT
  • Bachelor's Degree in
    West Ukraine University
    2021
    Bachelor's Degree in

Skill set

Categories