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Senior BI Developer IV

Openx

Krakow Remote permanent

Posted: January 22, 2026

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Quick Summary

Senior BI Developer IV is responsible for designing and operating high-scale ad marketplaces, working closely with cross-functional teams to deliver optimal value to publishers and advertisers on every ad served across all screens.

Job Description

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.

OpenX is looking for a BI Developer with a very strong analytical mindset who will reshape the way the company uses data and will generate insights to meet department-level and company-level OKRs and KPIs. You will work with a federated team of Analysts, Data Engineers and Data Scientists embedded in finance, data, engineering, and operations and will be responsible for leveling up OpenX’s use of data and insights to make business decisions.

The ideal person needs to be curious, smart, communicative, resourceful, deeply technical and business-minded. This person will gain exposure to the entire business through frequent collaboration with tech, finance, sales, and operations. The candidate should not be afraid of facing challenges resulting from the massive scale OpenX operates in. Big Data is a real thing for us, not just a buzzword. Digital marketing background, preferably in AdTech, and hands-on experience with GCP:BigQuery and Looker will be an advantage.

Our exchange processes hundreds of 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.


What we offer::
• Employment contract (15 300- 17 100 PLN gross/monthly) or B2B (128 -143 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


Key Responsibilities::
• Being a member of a collective team of Analysts that will define and document business decisions across the organization.
• Analytics teams will require a new member to help bridge gaps:
• Document business definitions and needs for reporting,
• Ensure that the entire organization uses the same set of metrics, data set(s), and methodologies to generate reports,
• Understand the departments’ OKRs and KPIs, and build data insights to shape decision-making
• Will pull data and conceptualize business problems and solutions
• Independently identify and pursue analytical opportunities that will yield actionable insights
• Drive scenario and sensitivity analyses to support the development of strategy and key initiatives
• Work cross-functionally with other internal teams to support high-impact projects
• Present to senior management analysis and recommendations
• Help the company to democratize access to data by evangelizing and supporting non-technical colleagues


Required Qualifications::
• 2-3 years of experience as a Software Engineer, or Technical Analyst, or BI Developer,
• Must have the ability to diagnose business questions, articulate business requirements, ability to conceptualize data structures, and ultimately provide a team with data-driven solutions,
• Superior analytical skills, creativity, and the ability to form key, succinct insights and recommendations from a comprehensive analysis involving large amounts of data,
• Solid knowledge of data modeling and some understanding of the mechanics of data processing,
• Experience with cloud tech stack (preferably GCP)
• Experience with cloud computing data storage and analysis tools like Big Query, RedShift, Athena, etc.,
• Must be proficient in SQL. Python or any other scripting language would be a plus,
• Comfortable with Git version control system,
• Experience with BI visualization tools like Tableau, Looker, Power BI
• Excellent verbal and written communication skills with the ability to interact at all levels of the organization,
• Bachelor’s degree required, with a major in Computer Science, Economics, or Math (Statistics),
• Part of this role is cooperating remotely across time zones with stakeholders
• Proficient in English (at least B2 level) and Polish

NICE TO HAVE:
• familiarity with Salesforce and CRM systems.


Our benefits (on employment contract)::
• Annual performance bonus
• Tax-deductible system due to copyright protection: 75%
• Private health care for you and your family (covered by OpenX)
• Private life and travel insurance
• MultiKafeteria program
• Training: access to the LinkedIn learning platform and Tech workshops
• Holiday Allowance
• Pension scheme (PPK from PZU)
• Additional paid day off
• Free parking lot
• Access to peer to peer recognition platform
• 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)


OpenX VALUES
Our 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 ONE
We 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 CENTRIC
We 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 OURS
We are all owners of OpenX
We all have a voice to improve OpenX
We stake our personal and professional reputations on the excellence of our work
We are not interested in just "doing our jobs"; we take ownership to drive results

WE ARE AN OPEN BOOK
We 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 FAST
We 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 TRAITS
Our three traits capture what makes a great team member at OpenX.

HUMBLE
Ideal 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.

DRIVEN
Ideal team players are results-driven and motivated. They are curious, always seeking more to do, learn, and take on. As proactive problem-solvers, they take initiative without needing external motivation. They continuously think about the next steps and opportunities for improvement.

SMART
Ideal team players are smart and possess the intellectual acumen to understand the complexities of our organization and industry. They are interpersonally intelligent, good communicators, and exemplify sound judgment in their interactions across the company to foster a collaborative environment.

OpenX is committed to equal employment opportunities.
It is a fundamental principle at OpenX not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related medical condition, and other protected characteristic as established by law.

OpenX Applicant Privacy Policy
Applicants can review our Applicant Privacy Policy at any time by visiting the following link: https://www.openx.com/privacy-center/applicant-privacy-policy/.
Effective Date of the Privacy Policy: November 21, 2024

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