Nazir Sina Kazimi

Available to hire

Hi, I’m Nazir Sina Kazimi, a software engineer with 8+ years of experience designing and building scalable, cloud-native web applications.

About

Hi, I’m Nazir Sina Kazimi, a software engineer with 8+ years of experience designing and building scalable, cloud-native web applications. I specialize in end-to-end full-stack solutions with React/Next.js on the frontend and Node.js/FastAPI/Flask on the backend, and I love integrating AI/ML models and LLM APIs to deliver intelligent, data-driven experiences.

I have a strong foundation in cloud platforms (GCP, AWS), CI/CD automation, and clean architecture. I enjoy collaborating across disciplines, mentoring developers, and delivering reliable production systems with measurable business impact.

  • Joined April 2025

Languages

  • Spanish; CastilianFluent
  • EnglishFluent
  • TurkishAdvanced
  • PortugueseAdvanced
  • PersianIntermediate
  • ArabicAdvanced

Industry experience

  • Computers & Electronics
  • Education
  • Financial Services
  • Healthcare
  • Government
  • Gaming
  • Professional Services
  • Software & Internet
  • Travel & Hospitality
  • Media & Entertainment
  • Other

More experts in Barcelona, Spain

Projects · 1

Chewy.com is a leading online retailer specializing in pet products, offering a wide range of items from food and toys to healthcare supplies for various animals, including dogs, cats, fish, birds, and more. The platform is designed to provide pet owners with a convenient shopping experience, featuring 24/7 customer support and a user-friendly interface.

Technically, Chewy.com employs modern web technologies to enhance its performance and user experience. The company has utilized React and Next.js for front-end development, enabling the creation of highly interactive and responsive user interfaces. This approach is evident in their job postings, which list experience with these technologies as desirable qualifications.

In addition to its robust front-end, Chewy.com integrates AI-powered solutions to optimize various aspects of its operations. For instance, the platform utilizes Dynatrace, an AI-driven monitoring and analytics tool, to gain insights into user interactions, transactions, and application performance. Furthermore, the company has developed features like an AI-powered product recommendation engine to enhance the shopping experience.

Chewy
  • AI Engineer
  • Back-End Developer
  • Front-End Developer
  • +1

Work experience· 10 roles

Lead Full Stack Developer & Technical Architect · Mekkat o CreaT ech Studio LTDJun 2025 – Present · 1 yr 6 mos

Led development and maintenance of Next.js (TypeScript) applications integrated with Firebase for real-time data and authentication. Designed Python microservices (FastAPI + Flask) and back-end APIs, reducing response latency by 40% through API optimization and caching. Integrated OpenAI & Hugging Face APIs for intelligent content generation and semantic search. Automated deployments using Docker, GitHub Actions CI/CD pipelines, and Google Cloud Platform (GCP) with Firebase Hosting, ensuring scalable, reliable production environments. Conducted technical code reviews for AI-powered platform, enforcing best practices in clean architecture, performance optimization, and maintainability. Provided technical leadership, mentoring developers on cloud-native practices, AI-first application design, and scalable full-stack patterns.

Lead Full Stack Developer & Technical Architect · Mekkat o CreateTech Studio LtdJun 2025 – Present · 1 yr 6 mos

Developed and maintained Next.js (TypeScript) applications integrated with Firebase for real-time data and authentication. Designed Python (FastAPI + Flask) microservices and back-end APIs, reducing response latency by 40% through API optimization and caching. Integrated OpenAI & Hugging Face APIs for intelligent content generation and semantic search. Automated deployments using Docker, GitHub Actions CI/CD pipelines, and Google Cloud Platform (GCP) with Firebase Hosting, ensuring scalable and reliable production environments. Conducted technical code reviews for AI-powered platform, enforcing best practices in clean architecture, performance optimization, and maintainability. Provided technical leadership, mentoring developers on cloud-native practices, AI-first application design, and scalable full-stack patterns.

Senior Software Engineer · Suffescom Solutions Pvt.Apr 2025 – Oct 2025 · 7 mos

Developed and maintained full-stack Web3 applications using React.js, Next.js, and TypeScript on the frontend, and Node.js / Express.js on the back end. Integrated wallet authentication and smart-contract interactions with Ethers.js and Web3.js, improving transaction reliability by 20%. Designed and implemented RESTful APIs and microservices, supporting decentralized app scalability for 50K+ active users. Deployed and managed applications on AWS and GCP, leveraging Docker and GitHub Actions for CI/CD automation. Collaborated with cross-functional teams in an Agile/Scrum setup to deliver reliable, high-quality web solutions.

Senior Software Engineer · Suffescom Solutions Pvt.Apr 2025 – Oct 2025 · 7 mos
Software Engineer (Full Stack & AI Systems) · GFT IT Consulting SLAug 2024 – Oct 2025 · 1 yr 3 mos
Software Engineer (Full Stack & AI Systems) · GF TIT Consulting SLAug 2024 – Oct 2025 · 1 yr 3 mos
Senior Frontend Developer · Zimmplify LLCMar 2022 – Oct 2025 · 3 yrs 8 mos
Senior Frontend Developer · Zimmplify LLC / Spotlightr serviceMar 2022 – Oct 2025 · 3 yrs 8 mos

Education· 15

Master's degree, Computer Science · Universitat Politècnica de Catalunya2015 – 2017
Undergraduate, Electrical and Electronics · Universidad de Alcalá2014 – 2015
Undergraduate, Electrical and Electronics · Gazi University2009 – 2013
Master's degree in Computer Science · Universitat Politècnica de Catalunya2015 – 2017

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