Mid JavaScript Engineer III @ OpenX in OpenX

You will be working on Marketplace Quality (Traffic Quality and Ad Quality). Recognize non-human traffic and block it to reduce the cost of our infrastructure and to not overload our demand-side partners, detect malware in ads, check if they meet standards and keep websites and visitors safe, provide a response in a few milliseconds if the quality of traffic and ads is good for 80 billions of requests per day.4+ years experience with building SaaS applications using JavaScript/Typescript (including Node.js) Experience with databases system design, RDBMs, or NoSQL Excellent written and spoken English skills Experience with Amazon Web Services or Google Cloud Platform - nice to have Experience working in digital media, marketing technology, or advertising technology is a big plus Communicative Polish and English You will be working on Marketplace Quality (Traffic Quality and Ad Quality). Recognize non-human traffic and block it to reduce the cost of our infrastructure and to not overload our demand-side partners, detect malware in ads, check if they meet standards and keep websites and visitors safe, provide a response in a few milliseconds if the quality of traffic and ads is good for 80 billions of requests per day. ,[Design high-performance, distributed, low-latency systems, Architect, create, and deliver new features and functionality, Work with Product to drive the requirements, and own the project end-to-end, Work with Product and UX teams to bring consumer-grade user experience and design to the, enterprise, Work with Engineering and Product teams distributed across multiple locations, Analyze and improve efficiency, scalability, and stability of servers and processes, Think long-term and be unsatisfied with band-aids, Identify unnecessary complexity and remove it] Requirements: JavaScript, Typescript , React, Material UI, AWS, Node.js, GCP, Python, Golang Tools: Jira, Confluence, Wiki, GIT, Jenkins, Agile, Scrum. Additionally: Sport subscription, Private healthcare, Life Insurance, Flat structure, Integration events, LinkedIn Learning, Multikafeteria, Free coffee, Bike parking, Playroom, Shower, Free snacks, Free beverages, In-house trainings, Modern office, No dress code, Adjustable desk.