Hadoop (advanced)
Who we are looking for
OpenX is looking for a talented and highly motivated Software Engineer to help us innovate and improve our products. You will work in all aspects of agile application development, including both front-end and back-end systems.
You will collaborate to design products that customers love and set OpenX apart.
The Opportunity
You will work in all aspects of agile application development, including our enterprise platform that interfaces with a multitude of services that are dependent on to deliver billions of requests per day.
Your opinions will be important in all phases of product development, starting from requirements to validation and deployment.
Working on the enterprise platform, you will be working with multiple distributed teams to architect, create, and deliver new features and functionality in order to deliver the best possible advertising experience in the market.
Scalability, performance, and rock-solid reliability are all factors to consider with every line you code.
The Team and Project :
You will be part of the core data development team. Our exchange handles billions of ad requests daily connecting thousands of publishers with demand partners.
Each request produces data events that have to be processed to extract business value from them. Daily our applications produce more than 1PB of data.
Please note : all interview stages are run remotely
What we offer
Working with the newest technologies such as Cloud Computing (GCP)
Experienced Team (50% of the company are senior developers!)
Challenges at work that are difficult to find anywhere else!
Solving important problems in a scale
Joining a company that is growing and scaling
Flexible working hours & remote work option
Key responsibilites
Design large-scale data processing systems
Work with Product to drive the requirements, and own the project end-to-end
Analyze and improve efficiency, scalability, and stability of applications
Think long-term and be unsatisfied with band-aids
Identify unnecessary complexity and remove it
Required Qualifications
Ideally 5+ years of experience in Java / Scala development for large scale Hadoop environments including performance tuning and monitoring
Expertise using an appropriate mix of applications in the big data ecosystem (Kafka, Spark, Hadoop MapReduce, Hive, YARN, Zookeeper, HBase, and other NoSql products)
Experience with databases system design, RDBMs, and / or NoSQL
Cloud experience with Google Cloud Platform or AWS, k8s, and Docker
Fluently speak algorithms, data structures, and platforms (Linux)
Bachelor’s degree in computer science, physics, or related field. A Master’s degree is a plus.
Communicative Polish and English
Desired qualifications / characteristics :
Be comfortable using the right tools and languages for the job, even brand new ones
Have the ability to develop scalable, modular applications
SCRUM / Agile environment experience
Experience working in digital media, marketing technology or advertising technology is a big plus
Good written & oral communication skills
Good sense of humor
Team player
Self-starter with the ability to independently identify and act on areas of improvement
Our benefits
Annual performance bonus
Tax-deductible system due to copyright protection
Private health care for you and your family (covered by OpenX)
Private life and travel insurance (Covid insurance included)
MultiKafeteria program
Training : access to the LinkedIn Learning platform, Tech workshops, English lessons
Holiday Allowance
Pension scheme (PPK from PZU)
Additional paid day off
Free parking lot
Sports activities : online yoga / stretching classes : )
Access to peer to peer recognition platform
Possible trips to California once in a while
Company events (online during the pandemic time)
Monthly work from home allowance and one-time payment when you join us to help you set up your home office
We celebrate team members' important personal milestones (vouchers, gifts) 
