Senior Software Engineer III (Java)

Company at a GlanceOpenX 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.
OpenX is looking for a talented and highly motivated Regular Software Engineer to help us innovate and improve our products. You will work in all aspects of agile application development, including our enterprise platform that interfaces with a multitude of services that are depended 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.
The team is using the following technologies:Frontend: JS/TS, React, Material UIAPI: PythonBackend: Java, Go, Erlang, ElixirCICD: Cloudbuild, Spinnaker 

What we offer:

• Employment contract (17 000 - 19 000 PLN gross/monthly) OR B2B (139 - 155 PLN net/hourly)
• Working with the newest technologies such as Cloud Computing (GCP)
• 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 Responsibilities:

• 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
• Analyse 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

Required Qualifications:

• ideally 4+ years of working experience in Java
• experience, please still get in touch with us
• Experience with databases system design, RDBMS or NoSQL
• Experience Google Cloud Platform, k8s, and docker is a big advantage
• Experience working in digital media, marketing technology, or advertising technology is a big plus.
• Communicative Polish and English

Desired Qualifications:

• Fluently speak algorithms and data structures and platforms (Linux)
• 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

OpenX VALUESOur five company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.
WE ARE ONEWe are one team. There are no exceptions. We are a group of strong and diverse individuals unified by a shared mission. We embrace challenges and win together as a team. We respect and care about our colleagues and cultivate an inclusive culture
WE ARE CUSTOMER CENTRICWe innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.
OPENX IS OURSWe are all owners of OpenXWe all have a voice to improve OpenXWe stake our personal and professional reputations on the excellence of our workWe are not interested in just "doing our jobs"; we take ownership to drive results
WE ARE AN OPEN BOOKWe understand and respect what each of us does. We are eager to teach and share what we know with others, both internally and externally. We are eager to learn from others and we ask questions internally and externally. 
WE EVOLVE FASTWe take responsible risks and own and learn from our mistakes. We recognize and repeat success. We actively seek out and provide constructive feedback. We adapt quickly and embrace change. We tackle growth and learning with real urgency. We are endlessly curious.
OpenX TRAITSOur three traits capture what makes a great team member at OpenX.
HUMBLEIdeal team players are humble and demonstrate integrity. They put the team's success above their own, share credit generously, and value collective achievements. They are self-assured, open to coaching, and committed to continuous learning.
DRIVENIdeal team players are results-driven and motivat