Data Engineer

DevriX is a leading digital solutions company working with Fortune 500 subsidiaries, multinational publishers, and high-traffic digital platforms, processing over 2 billion monthly page views. We build sophisticated data infrastructure, analytics platforms, and custom data solutions for enterprise clients operating at massive scale.

We are looking for a Data Engineer who is passionate about building scalable data infrastructure, optimizing performance at scale, and turning billions of data points into actionable insights for global brands.

This is a full-time on-site role at our Sofia, Bulgaria office.

Key Goals

• Design, build, and maintain robust data pipelines supporting millions of daily events across our client portfolio
• Develop ETL/ELT workflows integrating data from multiple platforms – advertising networks, CRM systems, analytics tools, and custom applications
• Optimize BigQuery schemas and queries for performance and cost-efficiency
• Build automated reporting systems processing millions of events daily
• Implement data quality monitoring and validation processes across high-traffic platforms, generating hundreds of millions of monthly users
• Work with engineering teams to instrument applications for proper data collection
• Architect cloud-based data infrastructure supporting global enterprise clients
• Deliver end-to-end data solutions – from ingestion through transformation to visualization
• Your work will directly influence business decisions for multinational clients across diverse industries

Role Requirements

• Strong SQL skills for complex queries, optimization, and database design at scale
• BigQuery experience – schema design, query optimization
• Python proficiency for data processing, automation, and pipeline development
• Comfortable with spreadsheets (Google Sheets/Excel) for ad-hoc analysis and reporting
• Understanding of ETL/ELT concepts and data pipeline design patterns
• Git workflows and version control
• Experience with web analytics at scale (Google Analytics, Google Tag Manager)
• Ability to work with APIs and integrate data from diverse sources
• Extreme ownership – you take responsibility for data quality and pipeline reliability
• High velocity – you ship working solutions quickly and iterate based on real-world performance

Nice to Have

• Apache Airflow experience for workflow orchestration (highly preferred!)
• Experience with other orchestration tools (Prefect, Dagster)
• Familiarity with data visualization tools (Looker Studio, Tableau, or similar)
• Cloud platform experience (Google Cloud Platform, AWS, Azure)
• Terraform or Infrastructure as Code experience
• Experience with CRMs and ERPs (HubSpot, Salesforce, NetSuite, Marketo) and pipelines/workflows around them
• Experience with advertising platforms (Google Ad Manager, Facebook Ads API, programmatic advertising)
• Understanding of high-traffic web infrastructure and content management systems
• Basic understanding of JavaScript for web event tracking and instrumentation

Extended Availability

Extended availability (evening shifts, on-call) for our US portfolio of clients is a competitive advantage with additional career opportunities and compensation.

What’s In It For You

• Work on global brands generating hundreds of millions of views – subsidiaries of Fortune 500 companies, leading publishers, and multinational companies
• Real ownership over architectural decisions and data infrastructure
• Solve unique data engineering challenges across diverse clients and industries
• A culture of self-management, decision-making, and brutally honest feedback
• Dynamic environment where velocity matters – you’ll drive impact, not just throughput reporting
• Take part in initiatives with our partners at Google, Amazon, HubSpot, and Microsoft
• Represent DevriX at webinars, publications, podcasts, and community events
• Tech & management books, tools, and subscriptions on demand
• Office managers coordinating deliveries, orders, car maintenance, and document management
• Birthday vouchers and anniversary coupons, plus ad-hoc prizes for internal challenges
• Internal workshops and training sessions
• Private health insurance
• 50% subsidized Multisport card + options for team CrossFit workouts
• Fresh fruits & snacks in the kitchen
• Dog-friendly office with hookahs available throughout the day
• Flexible working hours (later shifts available)

The Ideal Candidate

If you’re excited about building modern data platforms, optimizing queries to handle millions of events efficiently, and creating infrastructure that powers insights for global brands, we’re ready to meet you. This is an opportunity to make a significant impact by working with cutting-edge cloud data technologies.

All applications will be treated with strict confidentiality. Only short-listed candidates will be contacted.