Ahmet Barış Günaydin

Ahmet Barış Günaydin

Senior Frontend Engineer

Chiang Mai, Thailand
Frontend
React
Next.js

About Me

Experienced Frontend Engineer with over 3 years of hands-on work building and maintaining modern web applications. I specialize in frontend development using React, Next.js, and TypeScript, and regularly collaborate with backend, QA, and design teams. I value ownership, collaborative teamwork, and continuous improvement. My experience includes working on high-impact features, performance enhancements, and solving time-sensitive issues in production environments.

Professional Focus

Frontend development with React, Next.js, and TypeScript

Performance optimization and high-impact feature delivery

Cross-functional collaboration and ownership

Languages

EnglishFluent
TurkishNative
Available for new projects

Experience

Frontend Engineer | Founding Engineer

Balance (Cash Management Platform)
September 2023 – February 2025

Spearheaded resolution of urgent production issues, ensuring 99.9% operational continuity. Delivered 150,000+ lines of code and 350+ tickets in 2024. Increased user satisfaction scores by 15% through UX design leadership. Migrated from Redux Thunk to RTK Query, reducing boilerplate by 40% and enhancing performance. Implemented a high-performance dashboard handling 1,000+ transactions/sec and a multi-currency system. Integrated Plaid, Persona, Mixpanel; reduced average API response times by 25%. Championed CI/CD automation, cutting deployment time from 45 to 10 minutes. Achieved 85%+ test coverage with Jest.

Key Achievements
  • Resolved urgent production issues, ensuring 99.9% uptime
  • Delivered 150,000+ lines of code and 350+ tickets in 2024
  • Increased user satisfaction by 15% via UX leadership
  • Migrated Redux Thunk to RTK Query, reducing boilerplate by 40%
  • Implemented dashboard for 1,000+ transactions/sec and multi-currency
  • Integrated Plaid, Persona, Mixpanel; reduced API response times by 25%
  • Championed CI/CD automation, cutting deployment time from 45 to 10 minutes
  • Achieved 85%+ test coverage with Jest
Technologies & Skills
React
Next.js
Redux
RTK Query
Jest
CI/CD
Plaid
Persona
Mixpanel

Frontend Engineer | Founding Engineer

Asklepion Hizli Saglik (Digital Healthcare Platform)
April 2023 – April 2024

Co-founded a digital telehealth startup and launched MVP in under 6 months. Architected responsive frontend with Next.js and React Native. Integrated React Query, reducing API data response times by 50%. Supported 500+ concurrent users during peak usage. Improved stability to 99.8% uptime and increased user engagement by 30%.

Key Achievements
  • Co-founded and launched MVP in under 6 months
  • Architected responsive frontend with Next.js and React Native
  • Integrated React Query, reducing API data response times by 50%
  • Supported 500+ concurrent users during peak usage
  • Improved stability to 99.8% uptime and increased user engagement by 30%
Technologies & Skills
Next.js
React Native
React Query

Frontend Engineer

Delas Global (Software Consultancy)
May 2023 – September 2023

Created and maintained high-performance frontend features. Led Storybook-based design system in TurboRepo, cutting UI dev time by 25%. Published npm component library used by 3 internal teams. Modernized 100+ legacy UI components and migrated builds to Vite (60% faster).

Key Achievements
  • Created and maintained high-performance frontend features
  • Led Storybook-based design system in TurboRepo, cutting UI dev time by 25%
  • Published npm component library used by 3 internal teams
  • Modernized 100+ legacy UI components and migrated builds to Vite (60% faster)
Technologies & Skills
React
Storybook
TurboRepo
Vite
npm

Frontend Engineer

Overcodex (Finance CRM Platform)
November 2022 – March 2023

Engineered CRM for enterprise finance, including ACL-based permission controls. Built a robust RBAC system and real-time sync with Redux/RTK Query. Designed over 20 forms with React Hook Form and Yup, improving validation by 98%. Collaborated on scalable API implementation and refactored extensive legacy code.

Key Achievements
  • Engineered CRM for enterprise finance, including ACL-based permission controls
  • Built robust RBAC system and real-time sync with Redux/RTK Query
  • Designed 20+ forms with React Hook Form and Yup, improving validation by 98%
  • Collaborated on scalable API implementation and refactored legacy code
Technologies & Skills
React
Redux
RTK Query
React Hook Form
Yup

Frontend Engineer

35 Inch Software Solutions (Mobile App Development)
September 2022 – October 2022

Improved three international mobile apps, reducing startup time by 15%. Enhanced UI features for logistics, e-learning, and job management tools. Led new feature rollout and coordinated cross-team deployments.

Key Achievements
  • Improved three international mobile apps, reducing startup time by 15%
  • Enhanced UI features for logistics, e-learning, and job management tools
  • Led new feature rollout and coordinated cross-team deployments
Technologies & Skills
React Native
Mobile
UI

Technical Skills

Design

HTML5
CSS3
Emotion
Material UI
Responsive Design
Shadcn
AntDesign
TailwindCSS
TailwindCSS
Framer Motion
radix-ui

Development

JavaScript (ES6+)
TypeScript
Node.js
Python
React
Next.js
React Native
Redux
RTK Query
ag-Grid
GraphQL
RESTful APIs
PostgreSQL
Hasura

UX Methods

Wireframing
Prototyping
User Flows
Usability Testing
Information Architecture

Soft Skills

Advanced Problem-Solving
Strategic Analytical Skills
Exceptional Communication
Cross-Functional Collaboration & Mentorship

© 2025 Ahmet Barış Günaydin. All rights reserved.

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