React Native Developer - Next

At
HubX
, we build mobile apps used and loved by millions of people around the world.

We have a track record of building and scaling products across various verticals, reaching more than
600 million users across 6 continents and 190+ countries
.

We are looking for a talented
Frontend Developer
to join our
Next Studio
.

As a
Frontend Developer in Next Studio
, you’ll have the opportunity to build high-quality web experiences that complement products used by millions. You’ll work closely with product, design, and engineering teams, take ownership of what you build, and contribute to the technical decisions that shape our products.

X Culture: Do What You Love

At HubX, we pride ourselves on fostering an environment of collaboration, creativity, and innovation. Our
#XCulture
is more than just a workplace ethos; it's a lifestyle. We believe passion drives success. At HubX, Do What You Love isn’t just a motto; it's the foundation of our work.

Some of your responsibilities

• Create single-page, static-generated, and server-rendered web pages.
• Build beautiful, mobile-first, responsive, accessible, and cross-browser compatible UIs.
• Work closely with product owners, UI/UX designers, and developers to define, design, build, and ship new features.
• Understand and diagnose web metrics to improve Core Web Vitals and overall web performance.
• Work in a cross-functional team within an Agile/Scrum environment.
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
• Write clean, maintainable code and actively participate in peer code reviews.
• Develop and maintain scalable systems to support our growing user base.

What we look for

• Minimum 3 years of experience
  in frontend development
• Strong expertise in
  TypeScript
  , including functional and asynchronous programming paradigms
• Develop and maintain scalable web applications using
  Next.js
  , including server-side rendering (SSR), static site generation (SSG)
• Deep understanding of
  state management
  with
  Redux / Redux Toolkit
  and data fetching using
  RTK Query
• Hands-on experience with
  Firebase
  services, such as
  Auth, Firestore, Realtime Database (RTDB), and Remote Config
• Proficiency in UI development using
  Tailwind CSS, Shadcn
• Strong problem-solving mindset and ability to collaborate effectively in a cross-functional team
• Familiarity with
  Scrum/Agile methodologies
• Good command of
  written and spoken English
• Stay current on the latest platform capabilities so that we know what’s possible.
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency.
• Write clean, maintainable code and participate in peer code-reviews.
• Develop and maintain systems to support the growing user base.

Nice to have

• Experience working with
  content management systems
  like
  Keystone.js, Strapi, or Sanity
• Ability to create web animations using libraries like
  GSAP
  and
  Framer Motion
  , or similar libraries
• Familiarity with UI/UX design principles and design-to-code best practices
• Awareness of
  cross-browser compatibility
  best practices
• Keeping up with
  modern frontend development trends
  and latest platform capabilities
• UI/UX knowledge and working experience with Figma or design systems

The benefits of working with us

We would like you to focus on what you do best, we take care of the rest.

• Huge impact:
  Your work can significantly impact our millions of users, and even the mobile app industry at large in the next years to come.
• Ownership, opportunity to take responsibility from day one:
  No one will micromanage you. Together with your team, you’ll be free to choose a direction, test, fail, and test the next idea.
• A competitive compensation package:
  Our total compensation package is very comprehensive; covering your cost of commuting for our headquarters as well as providing you with a meal card.
• A brand new Macbook and welcome kit
• Private Medical Insurance & HPV Vaccine & Critical Women’s Health Coverage:
  We go above and beyond for your health.
• Gym Reimbursement:
  We support annual gym membership because we want you to be in tip-top shape psychically and mentally.
• A unique and top-notch office:
  Our Istanbul office is located at Maslak, right in the heart of the city. Surrounded by the energy of Istanbul’s bustling core, it’s a space designed for creativity and collaboration.
• Unlimited coffee from XPresso:
  You can grab a cup of coffee whenever you need, whether it’s to kickstart your morning or power through the day.
• Limitless Snacks & breakfast:
  Fuel your day with our fully stocked kitchen! From a hearty breakfast to a variety of snacks available anytime, we’ve got everything you need to stay energized and focused.
• Continuous education:
  The more you want to improve your knowledge, the more we support you!
• Meditopia membership:
  Enjoy full access to Meditopia for mental wellbeing, yoga, and therapy.
• Cambly access:
  Break language barriers with weekly Cambly speaking sessions.
• Team events
  that create lasting memories, including our traditional All Hands gatherings where the whole company comes together, as well as more humble celebrations and happy hours. Curious about our vibe? Take a look at our Instagram!
• Strong company culture:
  Our approach is always open communication & teamwork. #XCulture
• X Community discounts:
  Being part of HubX comes with perks, enjoy exclusive discounts and more as a valued member of our community.

The Recruiting Process

At
HubX
, we value transparency and efficiency. Here’s a glimpse into our streamlined recruitment process:

1. Application Submission:
   Apply by submitting your CV, LinkedIn profile, or a brief introduction about yourself.
2. People & Culture Interview:
   Engage in a conversation with our People & Culture team to discuss your background, aspirations, and how we align with each other’s goals.
3. Case Study Assignment:
   Showcase your skills through a practical task related to the role.
4. Technical Interview:
   Meet with your potential team lead for an in-depth review of your case study and technical expertise.
5. Welcome Aboard!:
   If all goes well, we’re excited to extend an offer and welcome you to the team.

Your personal data collected through your job applications will be processed by HubX in accordance with the Personal Data Protection Law No. 6698 ("KVKK") for the recruitment and evaluation. To review our data protection informing text: Link

İş başvurularınız kapsamında toplanan kişisel verileriniz HubX tarafından işe alım ve değerlendirme amacıyla 6698 sayılı Kişisel Verilerin Korunması Kanunu'na ("KVKK") uygun olarak işlenecektir. Aydınlatma metnimizi incelemek için: Link

At Cypher Games, we are building games played by millions around the world, and how players discover our games is an important part of the experience we create.

As our
Playable Ads Developer
, you will design and build interactive playable ads that bring our games to life through engaging, high-performing experiences.

As a key member working with our Marketing team, you will turn creative concepts and game mechanics into lightweight, polished playables, while continuously experimenting with new ideas and technologies to improve performance.

You don't just build ads: you build the first playable experience millions of players have with our games.

Responsibilities

• Design, develop, and maintain high-quality HTML5 playable ads from concept to final build
• Recreate and adapt game mechanics into engaging, interactive advertising experiences
• Build lightweight, performant playables optimized for fast loading, minimum build size, and cross-device compatibility
• Partner with marketing managers and artists to turn creative concepts into playable experiences
• Iterate on playables based on campaign performance, creative testing, and A/B testing results
• Experiment with new mechanics, technologies, and creative approaches to improve playable performance
• Establish reusable components, tools, and best practices that make playable development faster and more scalable
• Stay up to date with emerging technologies and best practices in playable advertising

Requirements

• 2+ years of professional software, web, or game development experience
• Strong proficiency in JavaScript or TypeScript
• Strong knowledge of HTML5 and modern web technologies
• Experience with Pixi.js, Three.js, Phaser, or similar rendering/game frameworks
• Strong understanding of game development fundamentals, including gameplay mechanics, animation, and user interaction
• Understanding of performance optimization, memory management, and asset optimization for web-based experiences
• Ability to write clean, maintainable, and performance-oriented code
• Strong problem-solving skills and ability to move quickly from concept to working prototype
• A builder mindset with a passion for games, interactive experiences, and creative technology

Nice to Have

• Previous experience developing playable ads for mobile games
• Experience with Unity and C#
• Experience in the mobile gaming industry, especially casual or hybrid-casual games
• Familiarity with mobile advertising networks and playable ad requirements
• Experience with creative testing, A/B testing, or performance marketing
• Experience building internal tools, reusable frameworks, or development pipelines

What We Value
Ownership:
you take responsibility for what you build, from the first prototype to the final experience.

Curiosity:
you experiment with new mechanics, technologies, and creative ideas to find what works best.

Simplicity:
you build lightweight, maintainable solutions that perform reliably across devices and platforms.

Collaboration:
you enjoy working closely with marketers, artists, and engineers to turn ideas into great interactive experiences.

Passion for games
and a genuine excitement for combining technology and creativity to build experiences that players want to engage with.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

We are looking for a passionate
Game Developer
to

join our team. You will be building ground breaking games in collaboration with Product and Art teams. As part of the engineering team, your mission will be solving complex problems with cutting edge tech.

At Grand Games, we believe in passionate people who want to make an impact. If you want to be in the core team of a fast growing company and have passion for gaming, your opportunity to make an impact awaits at Grand Games.

Responsibilities;

• Design, implement and test game features
• Write clean, flexible and well-structured code to ensure easy maintenance
• Work closely with your teammates to achieve shared goals
• Take ownership of the games to improve the game experiences

Requirements;

• Passion for mobile games
• 2+ years of experience in Unity & OOP
• Good knowledge of software design patterns
• Embracing teamwork and collaboration

Working at Grand Games;

• Stock option
• Fast-paced environment with feedback culture at its core
• Surrounded by exceptional and passionate team members
• Private health insurance with %100 coverage
• Breakfast and lunch by private chefs
• Access to our on-site gym

Welcome sahibinden.com world!

• We work for ‘Wow!’ moments
• We stay curious and explore, we love innovation
• We look into the same topics from different perspectives
• We celebrate and feel proud of our success together

S- technology;

Sahibinden.com has been helping people meet their dreams for the last 24 years.

With more than 55 million users and approximately with its 1000 employees, sahibinden.com is among the top five companies globally in classifieds sector.

Approved in 2017 as an R&D center in Turkey, sahibinden.com has been the pioneer of a variety of new services and provide continuous and reliable service over the web and mobile networks. Through our dynamic and agile teams, we continue to be a driving force in the digital marketplace by developing scalable and high-performance platforms that serve millions of users daily.

At sahibinden.com, we adopt a culture of innovation and continuous improvement at work to empower our employees. This approach, which fosters creative thinking and professional development, consistently earns us the title of one of The Best Workplaces in Europe, as voted by our employees.

Join us and be a part of our journey to redefine the future of e-commerce.

Is that you? Great!

As a Senior Frontend Developer at sahibinden.com, you will work closely with Tech Leads, Frontend and Backend Developers, Product Managers, Designers and QA Engineers to build and improve high-traffic web experiences.

You will contribute to our large-scale Angular codebase and take part in the development lifecycle, from understanding requirements and discussing technical solutions to implementation and production delivery.

• 4+ years of professional frontend development experience
• Strong hands-on experience with Angular, TypeScript and modern JavaScript
• Good knowledge of HTML, CSS, responsive design and cross-browser compatibility
• Solid understanding of Angular concepts including components, routing, forms, dependency injection, RxJS and Signals
• Experience building reusable components and working within a large-scale codebase
• Experience with REST APIs, asynchronous data flows and error handling
• Understanding of frontend performance, Git workflows, code reviews and CI/CD practices
• A collaborative, product-minded approach and strong ownership

If the requirements are met, then your job description is below;

• Build and improve user-facing features using Angular and TypeScript
• Develop responsive and cross-browser web experiences
• Create reusable components and maintainable frontend solutions
• Collaborate with team members on API contracts, data flows and technical decisions
• Participate in code reviews, investigate production issues and contribute to frontend engineering practices
• Use approved AI coding tools for codebase exploration, implementation, refactoring and debugging
• Critically review AI-generated output and take responsibility for the quality, security and maintainability of delivered code

Nice to have

• Experience with high-traffic consumer products, e-commerce platforms or online marketplaces
• Experience with Core Web Vitals, design systems, monorepos, micro frontend architectures or Angular modernization
• Knowledge of accessibility standards and frontend security practices
• Experience using AI coding assistants in day-to-day software development

If you have strong frontend fundamentals, enjoy solving complex problems and take ownership of your work, we would be happy to hear from you.

What We Offer

• 2 weeks available throughout the year
• Birthday leave
• One week accommodation at Richmond Efes and Pamukkale Hotels (for employees who have completed 3 years at Sahibinden.com)
• Well-being opportunities;
• Qality life package
• Gym and Dietician service

"Your personal data to be collected within the scope of the applications you will make through this job posting, will be carried out and processed for the purposes of conducting job application processes and evaluating your job application by Sahibinden Bilgi Teknolojileri Pazarlama ve Ticaret Anonim Şirketi (“Sahibinden”) as a data controller in accordance with the Law on the Protection of Personal Data No. 6698 (“KVKK”) and the relevant legislation.”

“We believe in the importance of equal treatment in our recruitment process. Inline with our diversity, equality and inclusion policy, we evaluate each application process in a transparent and fair manner and we focus on the skills of each applicant regardless of religion, race or gender.”

“AI is used as a supportive tool in our recruitment processes; all final evaluations and hiring decisions are made by human professionals.”