Description

With 5 years of experience in fullstack and mobile development, I bridge the gap between technical complexity and seamless user experience.

I specialize in delivering high-quality freelance work that hits the market ready to perform. My approach combines technical expertise with a strong product mindset—meaning I help you make the right architectural decisions to save time and money down the road. I have a track record of delivering projects on time without cutting corners on testing, security, or scalability.

My Technical Stack:

Frontend: React, Next.js, TypeScript
Mobile: React Native, Expo
Backend: NestJS, Python

Whether you are building an MVP from scratch or need to scale an existing platform with clean, maintainable code, I am ready to jump in.

Ready to launch or upgrade your application? Contact me to schedule a briefing.

Languages

Russian
Native or bilingual
French
Fluent
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

arkady
Software engineer
January 2024 - April 2025 (1 year and 3 months)
Lille, France
Scaling Architecture & Performance Optimization
• Backend Architecture & Performance: Re-architected the backend from AWS Amplify to a custom NestJS stack, reducing average request latency by 5×.
• DevOps & Infrastructure: Integrated Docker Compose to unify Backend, Frontend, and AI services, cutting inter-service latency by 40% and minimizing cold start times.
• Mobile Development: Built a high-performance React Native iOS app featuring real-time geolocation via Mapbox and AWS AppSync.
• Web Quality: Delivered a scalable Next.js web app, achieving 95+ Lighthouse scores for Performance and SEO.
• Impact: Collaborated on rapid product iterations, enabling the platform to scale smoothly to 1000+ Daily Active Users.
Next.js React Native NestJs Mapbox Amazon Web Services
Vinidaily
Full-stack Developer
September 2022 - January 2024 (1 year and 4 months)
Paris, France
Fullstack Optimization & Scalability
Cross-Platform Performance: Optimized React Native and React.js applications, improving load times by 30% and significantly reducing crash rates across iOS and Android.
Backend Architecture: Redesigned the backend using NestJS and GraphQL, slashing API response times from 100ms to 20ms.
Code Quality & Reliability: Refactored 50+ frontend components using TypeScript and TailwindCSS, increasing maintainability and cutting bug reports by 40%.
Scalability: Maintained 99.9% availability during 5× traffic spikes and implemented debounced search to reduce API load by 70%.
React Native React.js NestJs Typescript TailwindCSS
Niagara tech.
Frontend Developer
January 2022 - September 2022 (8 months)
• Implemented 20+ UI components in Vue.js with Vuetify, ensuring responsive design and full alignment with product specifications.
• Refactored legacy codebases, reducing technical debt by 35% and accelerating feature delivery cycles.
• Integrated Firebase and Google Cloud services, streamlining backend operations and securing scalable deployment pipelines.
• Developed new features and maintained core logic, contributing to a 25% boost in user engagement and overall system stability.

Check out Amir's experience

Be the first to recommend Amir

Help this freelancer shine by sharing your experience working together.

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

Baptiste Duhen

Fullstack developer

4.6

(4)

Amed Hamou

Senior Lead Developer

(2)

Audrey Champion

Web developer

4.3

(3)

Signup to reveal

BAC+5 Responsable de projet web et mobile
Epitech Paris
2022
BAC+5 Responsable de projet web et mobile

Amir Sarsen

Expert Fullstack & Mobile Developer

About Amir

Experience

Scaling Architecture & Performance Optimization

Fullstack Optimization & Scalability

Recommendations

These freelancer profiles also match your criteria

Education

Skill set

Categories