Position: Senior Data Visualization Developer
Company: YozmaTech
Experience required: 5y
English level: upper

We are looking for a Senior Data Visualization Developer with strong computing skills and data visualization background — a highly-motivated professional who will make our business transparent and trackable by empowering operations and product management with an easy-to-use dashboard system.

**Areas of responsibility:**

**Dashboards development**

🔹 Collection and analysis of business requirements;
🔹 Development of dashboard backend — creation of data sources by combining data from the DWH or connection to published data sources;
🔹Visualization of the data using the corporate template and best vis practices;
🔹Quality checks — functionality tests, data accuracy checks;
🔹 Presentation / adoption of the result to the stakeholders and collecting feedback.

**Tableau Server administration**

🔹Systems performance analysis and tuning using TSM and RMT or alternatives;
🔹Users, content, jobs management;
🔹Technical dashboards creation based on Tableau repository data;
🔹Processes automatization.

**Users support &amp; Bugs resolution**

🔹 Resolution of user requests and bugs through Helpdesk and other channels;
🔹Quality checks of existing dashboards and data in the DWH.

**Development of data-driven culture**

🔹Development of users communities;
🔹Active participation in infra-optimization projects;
🔹New processes &amp; approaches development.

**Requirements:**
🔸 5+ years of work experience in BA / BI / Data Vis;
🔸Graduate from top-tier university with specialization in Computer Science/Math/Data analytics — advantage;
🔸Proficiency in SQL: the ability to quickly write efficient code selecting data from multiple sources (CTEs, temp tables, sub-queries, views), knowledge of query optimization techniques, proficiency in window functions;
🔸2+ years of development experience in Tableau — calculated fields, LODs, parameters, actions, dashboard containers layout;
🔸Solid knowledge of data vis principles /practices and aesthetic awareness;
🔸Experience with other BI technologies (i.e. Power BI, QlikView, etc.) — advantage;
🔸Experience with Linux, command line, Python, Git — advantage;
🔸Ability to work with large amounts of information and see the wood behind the trees along with attention to deep details;
🔸 Upper Intermediate English;
🔸 Can-do attitude, self-discipline, ability to push things to happen, passion for learning;
🔸 Strong communication, problem-solving skills and proactivity;
🔸 Proven team player.

**We offer:**
• Comprehensive support for developers who have moved to Poland: accommodation, legal assistance and adaptation.
• Stable employment in a company that has been developing the IT industry for over 15 years and has grown by 102% over the past year
• Competitive, performance-based salary with regular reviews
• Free English classes with a native speaker and external courses compensation
• PE support by professional accountants
• Regular team-building events, conferences, meetups, and fun activities
• Many other benefits you’ll find out at the interview!