Available for new opportunities

Eymen Karatas

Front-End Developer & Full-Stack Engineer specializing in enterprise mobile applications, UI engineering, and scalable client-side architecture.

Istanbul, Turkey

2.5+
Years at OBSS
15+
Core Technologies
1
Enterprise Mobile App
CMMI
Lead Appraiser
Eymen Karatas - Front-End Developer

Currently

CMMI Lead Appraiser

Experience

OBSS · Front-End

About Me

Engineering with Purpose & Precision

Transforming complex business requirements into elegant, production-ready digital products.

Eymen Karatas professional portrait

I am a Front-End Developer and Full-Stack Engineer with professional experience designing and developing enterprise-level web and mobile applications. I specialize in client-side architecture, user interface engineering, API integration, and application performance optimization.

At OBSS — one of Turkey's leading software technology companies — I contributed to OBizz, a recognized mobile application, focusing on front-end implementation, client-side development, and user experience improvements. I transform business requirements and UI/UX concepts into reliable production applications while maintaining clean, maintainable code.

Beyond development, I am certified as a CMMI-DEV High Maturity Lead Appraiser, combining hands-on engineering expertise with deep knowledge of software process improvement and quality standards.

Languages

TurkishNative
EnglishProfessional Working Proficiency

Clean Architecture

Building maintainable, component-driven frontends with scalable patterns and best practices.

Performance First

Optimizing application responsiveness, load times, and user experience across devices.

Quality Standards

CMMI-certified expertise in software process improvement and engineering excellence.

Experience

Professional Journey

Building enterprise-grade applications at one of Turkey's leading technology companies.

Front-End Developer

OBSS

Istanbul, TurkeyJune 2021 — November 2023

Worked in professional software development teams delivering enterprise solutions and mobile applications for one of Turkey's most respected technology companies.

  • Developed and maintained mobile application interfaces and client-side functionality for production-grade enterprise software.
  • Built reusable UI component libraries and structured frontend solutions for long-term maintainability across teams.
  • Converted product requirements and design specifications into functional, tested features within Agile sprints.
  • Integrated frontend functionality with REST APIs and backend application services with robust error handling.
  • Improved application stability, responsiveness, and overall user experience through performance profiling.
  • Participated in debugging, testing, code reviews, and production issue resolution across cross-functional teams.
JavaScriptTypeScriptReactReact NativeREST APIsAgile/Scrum
Projects

Selected Work

Enterprise mobile applications and front-end systems built for production at scale.

Featured Project

OBizz Mobile Application

OBSS · Enterprise Mobile

A recognized mobile application developed at OBSS, serving enterprise clients with intuitive interfaces and reliable client-side architecture. I led front-end implementation across core user-facing modules.

Architected reusable component systems for consistent UI across multiple application modules.
Implemented responsive mobile layouts optimized for diverse device form factors and OS versions.
Integrated complex API workflows with optimistic UI updates and graceful error recovery.
Collaborated with designers to translate Figma specifications into pixel-perfect implementations.
Drove performance improvements reducing load times and improving scroll responsiveness.
React NativeTypeScriptREST APIsReduxJestFigma

Design System

Enterprise UI Component Library

OBSS

An internal component library built to standardize UI patterns across OBSS mobile projects, accelerating development velocity and ensuring visual consistency.

  • →Designed atomic component architecture with composable, theme-aware building blocks.
  • →Documented usage patterns and accessibility guidelines for team-wide adoption.
React NativeTypeScriptStorybookDesign Tokens

Architecture

Client-Server Integration Layer

OBSS

A structured client-side data layer connecting mobile frontends with backend services, featuring caching strategies, request deduplication, and offline-aware state management.

  • →Built typed API client wrappers with centralized error handling and retry logic.
  • →Implemented caching layers to minimize network requests and improve perceived performance.
TypeScriptRESTAsync StorageOAuth
Skills

Technical Expertise

A comprehensive toolkit for building modern, performant, and maintainable applications.

Frontend Development

JavaScriptTypeScriptReactNext.jsHTML5 & CSS3Tailwind CSSResponsive DesignComponent Architecture

Mobile Development

React NativeMobile UI EngineeringCross-Platform DevelopmentPerformance Optimization

Software Engineering

OOPDesign PatternsClean CodeGitAgile/ScrumCode ReviewTesting

Integration & Architecture

REST APIsClient-Server ArchitectureDatabase FundamentalsSDLC

Quality & Process

CMMI-DEV V2.0Process ImprovementQuality ManagementContinuous Improvement

Tools & Workflow

VS CodeFigmaJiraConfluencePostmanChrome DevTools
My Journey

From Campus to Enterprise

A visual timeline of academic foundations, professional growth, and continuous learning.

2014

Started at ITU

Began Computer Engineering at Istanbul Technical University, one of Turkey's most prestigious technical universities.

Eymen studying at Istanbul Technical University
2018

Graduated from ITU

Completed Bachelor's in Computer Engineering with a solid foundation in algorithms, systems, and software design.

Eymen collaborating with peers at university library
2021

Joined OBSS

Started as Front-End Developer at OBSS, one of Turkey's leading software companies, contributing to enterprise mobile applications alongside a talented engineering community.

Eymen Karatas with colleagues at the OBSS office
2023

OBizz & Enterprise Delivery

Delivered key front-end modules for OBizz mobile application, improving UX and application stability across production releases.

OBizz mobile application — ING Business interface showcase
2025

CMMI Lead Appraiser

Certified as CMMI-DEV High Maturity Lead Appraiser, bridging engineering excellence with process quality standards.

CMMI-DEV High Maturity Lead Appraiser certificate
Education & Certifications

Academic Foundation & Credentials

Rigorous computer science education complemented by industry-leading quality certifications.

Istanbul Technical University (ITU)

Bachelor's Degree in Computer Engineering

Istanbul, Turkey · September 2014 — June 2018

Built a strong foundation in computer science and software engineering through rigorous coursework and collaborative academic projects.

Software Engineering
Data Structures & Algorithms
Object-Oriented Programming
Database Systems
Operating Systems
Computer Networks
Web Technologies
Mobile Application Development
Studying at ITU
Collaborating at university

CMMI-DEV High Maturity Lead Appraiser

CMMI Institute / TÜBİTAK BİLGEM YTE

July 2025 — July 2028 · Appraisal ID: 51274

  • ✓CMMI-DEV V2.0 Framework
  • ✓High Maturity Software Process Assessment
  • ✓Software Process Improvement
  • ✓Quality Management Systems
  • ✓Continuous Improvement Practices
  • ✓Engineering Process Optimization
Contact

Let's Build Something Great

Open to front-end engineering, full-stack development, and quality-focused software roles. Reach out — I'd love to connect.

Whether you have a project in mind, an opportunity to discuss, or simply want to connect — I'm always interested in meaningful conversations about technology, software quality, and building products that make an impact.

Location

Istanbul, Turkey