İlknur Ültanır, Developer in Amsterdam, Netherlands
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İlknur Ültanır

Bio

İlknur is a front-end-focused full-stack engineer with 6+ years specializing in React and TypeScript. An expert in building scalable, high-performance web applications with exceptional user experiences, she has a proven track record of improving performance by 25-40% and leading technical architecture decisions across international teams. İlknur has strong expertise in modern JavaScript ecosystems, component libraries, and testing frameworks.

Portfolio

WebGazer
JavaScript, React, Vite, React Router, Context API, Bootstrap 5, Responsive...
Thanks Boomerang
Next.js, TypeScript, React, PostCSS, CSS, Context API, Redux, Redux Toolkit...
Keibi Inc
Material UI, TypeScript, React, Context API, Storybook, OpenIDM, Figma...

Experience

  • Node.js - 4 years
  • React - 3 years
  • SCSS - 3 years
  • Context API - 3 years
  • TypeScript - 2 years
  • SWR - 1 year
  • PostCSS - 1 year
  • Next.js - 1 year

Preferred Environment

MacOS, WebStorm, Slack, Discord, GitHub, Bitbucket, IntelliJ IDEA, Docker

The most amazing...

...thing I've done was build custom features for a web app with more than 20 million unique sessions and 75,000 users.

Work Experience

Co-founder & Full-stack Engineer

2024 - PRESENT
WebGazer
  • Architected scalable React/TypeScript front-end infrastructure with reusable component systems.
  • Engineered 25% performance improvement through Core Web Vitals optimization.
  • Led technical stack decisions and established documentation standards.
  • Built advanced state management solutions and custom hooks for complex UI interactions.
Technologies: JavaScript, React, Vite, React Router, Context API, Bootstrap 5, Responsive, Accessibility, Playwright, Lazy Loading, Code Splitting, Technical SEO, Content Writing, Keyword Research, Google Ads, REST, Docker, Kubernetes, Grafana, CI/CD Pipelines, Code Review

Senior Front-end Developer

2022 - 2024
Thanks Boomerang
  • Spearheaded complete front-end architecture redesign from legacy to modern React/TypeScript stack.
  • Created a comprehensive design system from Figma specs, improving design consistency across the platform.
  • Reduced development time by 40% through modular architecture and component library.
  • Collaborated with product managers on feature prioritization and user workflow optimization.
Technologies: Next.js, TypeScript, React, PostCSS, CSS, Context API, Redux, Redux Toolkit, Storybook, REST APIs, ESLint, Prettier, Git, GitHub, Jira, MJML, Node.js, HTML Email, Code Refactoring, Code Review

Senior Front-end Developer

2022 - 2022
Keibi Inc
  • Developed MVP according to the designs. Structured the front-end stack and created 100+ components according to that.
  • Integrated authentication logic with OpenID. Extended OpenID protocol with Azure Active Directory B2C.
  • Scheduled and assigned tasks to the team and onboarded new developers.
Technologies: Material UI, TypeScript, React, Context API, Storybook, OpenIDM, Figma, React Router, Front-end, Web Development, User Interface (UI), HTML UI, CSS3, Responsive Web Apps, APIs, DOM, ECMAScript (ES6), Vite, Code Review, Webpack

Senior Front-end Developer

2021 - 2022
RevenueHero
  • Performed front-end development for all client projects.
  • Bootstrapped the front-end stack considering necessities.
  • Onboarded new developers and played a role in code review processes.
Technologies: Next.js, TypeScript, Context API, Cypress, Storybook, Tailwind CSS, Recoil, Figma, Front-end, Web Development, Integration Testing, User Interface (UI), HTML UI, CSS3, Progressive Web Applications (PWAs), Responsive Web Apps, APIs, Stripe, DOM, ECMAScript (ES6), Code Review, Webpack

Front-end Developer

2020 - 2021
Gamer Arena
  • Built custom features for a web app with 20+ million unique sessions and 75,000 users, written with Next.js and Redux, including Redux Toolkit and Redux-Saga.
  • Rewrote the product in six months using Next.js, Context API, SWR, and TypeScript. Further implemented end-to-end tests with Cypress and configured GitHub Actions for code quality checks.
  • Took the initiative to support a direct part in UI/UX design, web analytics implementation, and feature additions. Therefore, I impacted a fast-paced startup and gained product management experience.
  • Established automated testing practices with Cypress for front-end reliability.
  • Optimized complex gaming UI interactions and real-time state management.
Technologies: TypeScript, React, Next.js, SCSS, GitHub, Trello, Redux, SWR, Context API, Cypress, HTML, HTML5, CSS, Agile, Git, Responsive UI, Redux-Saga, Figma, React Router, Front-end, Web Development, Integration Testing, User Interface (UI), HTML UI, CSS3, Progressive Web Applications (PWAs), Responsive Web Apps, APIs, DOM, ECMAScript (ES6), Code Refactoring, Code Review

JavaScript Developer

2019 - 2020
Insider
  • Customized and implemented end-to-end marketing software products of the company to client sites for different stacks as of SSR, client-rendered, pre-rendered using JavaScript, HTML, CSS, and Google Tag Manager through 25+ different countries.
  • Pioneered company clean code documentation, ESLint configuration, and code review standards with boilerplate code library that has optimized the onboarding time of newcomers by seven days on average.
  • Supported the efforts of client-facing account managers and gave technical support to both cited account managers and non-technical customers through one-on-one consultations.
Technologies: JavaScript, jQuery, Amazon Web Services (AWS), Google Tag Manager, HTML, HTML5, CSS, Agile, Git, Responsive UI, Sass, Front-end, Web Development, User Interface (UI), HTML UI, CSS3, Responsive Web Apps, GitLab, DOM, ECMAScript (ES6), Code Review

Software Specialist

2018 - 2019
Vidizayn
  • Designed and built pixel-perfect sites with HTML, CSS, and jQuery following strict governmental accessibility and design laws for pharmaceutical companies such as Pfizer and Bayer.
  • Contributed to global client acquisition through writing custom client modules for Drupal and WordPress on internationalization and localization (i18n), which in its initiation led to the acceptance of eight new global clients.
  • Championed and set up internal tools to increase development efficiency and overall productivity, leading to a reorganization that allowed two out of four developers free to be reallocated for other support functions.
  • Collaborated closely with the quality assurance engineers and directly contacted the customers for technical support, personally achieving half of the average time to response and task completion time.
Technologies: JavaScript, jQuery, Drupal 7, Drupal 8, jQuery UI, jQuery Mobile, HTML, HTML5, CSS, Agile, Git, Responsive UI, Front-end, Web Development, User Interface (UI), HTML UI, CSS3, Responsive Web Apps, DOM

Experience

Unius Jobs

Unius Jobs is an AI-curated job board tailored for tech professionals, designed to provide an intuitive and engaging user experience. As the front-end developer, I built the entire front end using Next.js 14, TypeScript, Tailwind CSS, and Shadcn. The application integrates AI to streamline job recommendations and consumes a REST API to fetch job listings dynamically. My work focused on creating responsive layouts, optimizing performance, and ensuring accessibility to make job searches as efficient as possible for users.

WebGazer | Monitoring Suite

WebGazer is an API, website, port, and cron job monitoring service with customizable hosted status pages. I developed the front end using Vite, React, and TypeScript and Go on the back end.

Gamer Arena | Web App

https://gamerarena.com/
Gamer Arena is an online competitive esports platform where you can match and compete with opponents and teams of your skill level across numerous gaming titles, earn money, enter, and work your way through the ladder all the way to professional gaming stardom.

Developed the front end of the project using TypeScript, React, and Next.js with Context API and SWR.

Education

2014 - 2020

Bachelor's Degree in Industrial Engineering

MEF University - Istanbul, Turkey

Certifications

JULY 2025 - PRESENT

Introducing Generative AI with AWS

Udacity

JULY 2025 - PRESENT

AWS Educate Machine Learning Foundations

AWS

OCTOBER 2022 - PRESENT

Problem Solving (Basic) Certificate

HackerRank

Skills

Libraries/APIs

React, Context API, jQuery, React Router, REST APIs, Chart.js, Redux-Saga, jQuery UI, jQuery Mobile, Node.js, Stripe, fp-ts, OpenAI API, Playwright

Tools

PostCSS, Figma, GitHub, Git, GitLab, Trello, OpenIDM, Webpack, Redux Toolkit, Prettier, Jira, IntelliJ IDEA, Shadcn, Grafana

Languages

TypeScript, JavaScript, CSS, HTML5, HTML, CSS3, SCSS, GAMS, Python, Sass, ECMAScript (ES6)

Frameworks

Next.js, Redux, Bootstrap, Tailwind CSS, Vanilla JS, Angular, Express.js, Cypress, Recoil, Material UI, Jest, Django, MJML

Paradigms

Agile, Code Refactoring, Responsive, Keyword Research, REST

Platforms

Vercel, Firebase, Amazon Web Services (AWS), Drupal 7, Drupal 8, Google Ads, Docker, Kubernetes

Other

SWR, Responsive UI, Front-end, Web Development, User Interface (UI), HTML UI, Responsive Web Apps, DOM, Algorithms, Heuristics, Mathematical Modeling, Google Tag Manager, Progressive Web Applications (PWAs), APIs, Vite, User Experience (UX), Code Review, Storybook, Integration Testing, Full-stack, OpenAI GPT-4 API, ESLint, HTML Email, Bootstrap 5, Accessibility, Lazy Loading, Code Splitting, Technical SEO, Content Writing, Scraping, CI/CD Pipelines, AI Agents, Agentic AI, Machine Learning, Generative Artificial Intelligence (GenAI)

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