Description:

OpenX is seeking a Senior Software Engineer IV (JavaScript) to join their core exchange development team in Krakow, with options for remote work.
The company focuses on maximizing the economic potential of digital media companies through innovative digital advertising technologies.
The role involves designing high-performance, distributed, low-latency systems and delivering new features and functionality.
The engineer will collaborate with Product and UX teams to enhance user experience and will work with distributed Engineering and Product teams.
Responsibilities include analyzing and improving server efficiency, scalability, and stability, while also simplifying complex systems.
OpenX operates a fully cloud-based platform on GCP, handling over 400 billion ad requests daily and managing significant data volumes.

Requirements:

Candidates must have 5+ years of experience building SaaS applications using JavaScript/Typescript, including Node.js.
Experience with database system design, RDBMs, or NoSQL is required.
Familiarity with Amazon Web Services or Google Cloud Platform is a plus.
Experience in digital media, marketing technology, or advertising technology is highly desirable.
Proficiency in both Polish and English is necessary for effective communication.

The position offers an employment contract with a salary range of 21,250 - 25,000 PLN gross/monthly or a B2B option at 167 - 196 PLN net/hourly.
Employees receive an annual performance bonus and a tax-deductible system due to copyright protection at 75%.
Private health care for employees and their families is provided, along with private life and travel insurance.
Additional benefits include a MultiKafeteria program, access to training through LinkedIn learning and tech workshops, holiday allowance, and a pension scheme (PPK from PZU).
Employees enjoy an additional paid day off, free parking, and a monthly work-from-home allowance, along with a one-time payment to help set up a home office.
OpenX celebrates team members' personal milestones with vouchers and gifts.