Company at a Glance
OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.
At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.
We’re seeking a skilled Senior Full Stack Web Developer to take ownership of evolving and enhancing our WordPress-based website. This role is responsible for leading technical implementation across the front end, back end, CMS, and hosting infrastructure as we elevate and modernize our web experience for our customers. This person should be well versed with full stack technologies, experienced in wordpress plugins integration and all analytics/cookies code injection and understand the shifting landscape of how AI is impacting web development.
This person will be a key member of the OpenX marketing team, working for the Digital Marketing manager and working closely with the design team on a day-to-day basis. They will be based in Kraków and be part of the OpenX community in that market.
Responsibilities:
Translate the complete website UI/UX based on the design from Figma/Sketch into pixel-perfect, functional, and responsive web pages
Manage a responsive website for both desktop & mobile
Implement & manage cookie banners across all web pages
Bring in new web development practices & learning to deliver a great customer experience
AI Accessibility - Experience with or interest in leveraging AI tools to improve development efficiency (e.g., GitHub Copilot, Cursor) and enhance user experience (e.g., AI-powered search, content personalization, translation).
Backend:
Enhance our website with pages including menu, footer, and sitemap to be managed and updated by the marketing manager for copy and assets
Manage code injection, analytics, cookies, asset library, etc.
Take care of any WordPress CMS needs as needed, including upgrades to WordPress, plugins, and custom themes. This includes rigorous testing on a staging environment to prevent production issues.
Create and maintain clear technical documentation for the website's codebase, architecture, and deployment processes.
Server/Web Hosting:
Manage our WP Engine hosting
Own the website's overall security posture by implementing preventative measures (like vulnerability scanning), monitoring for emerging threats, and defending against malicious traffic and potential exploits
Manage and verify database backups
Set up and manage an architecture of a staging environment to version manage the website
Website Performance Optimization - Continuous optimization of front-end performance to meet Google Core Web Vitals, ensuring fast and smooth performance on all devices
Qualifications:
5-7 years of web development experience
Strong knowledge of WordPress Customizer
Working experience with Asana
Strong understanding of how to integrate WordPress with platforms like HubSpot, GA4, GTM, and others.
HubSpot experience
Strong understanding of technical SEO principles and their implementation in a WordPress environment.
Must be able to attend calls at later afternoon time like 6.30 pm
Front End: HTML, CSS, and JavaScript
Back End: PHP, SQL, WordPress CMS, REST APIs, LAMP Stack
DevOps Tool: Kubernetes, Git (Version Control)
Server/Hosting: WP Engine
Strong command in English
What we offer:
B2B (81- 95 PLN net/hourly)
Working with the newest technologies such as Cloud Computing (GCP)
Challenges at work that are difficult to find anywhere else!
Joining a company that is growing and scaling
Flexible working hours & remote work option
