Senior Data Engineer (AI)

Location: Sofia, Bulgaria — office; Varna, Bulgaria — hybrid

Company

hirify.global provides payment, multicurrency account, and e-commerce solutions that help businesses manage and grow their operations.

What you will do

• Build and maintain data pipelines for ingestion, transformation, and export across multiple sources and destinations.
• Design and evolve scalable data architecture and deliver curated, analysis-ready datasets for analysts and data scientists.
• Implement data quality, testing, monitoring, lineage, reliability, access control, auditability, and governance practices.
• Optimize Spark jobs, queries, partitioning strategies, workflows, cost, and system scalability.
• Build and maintain MLOps automation, including CI/CD for machine learning, environment management, artifact handling, and versioning of data, models, and code.
• Contribute to documentation, engineering standards, troubleshooting, and continuous improvement of the data platform.

Requirements

• 6+ years of experience as a Data Engineer building and maintaining production-grade pipelines and datasets.
• Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.
• Strong Python and SQL skills, including data structures, performance, and optimization strategies.
• Experience with orchestration tools such as Airflow, Dagster, or Databricks Workflows, plus distributed processing in a cloud environment.
• Experience with analytical data modeling, data warehouses, ETL/ELT patterns, dimensional concepts, and incremental ingestion from databases and APIs.
• Experience with at least one major cloud provider, CI/CD, Terraform or other infrastructure-as-code practices, and troubleshooting across data, infrastructure, pipelines, and deployments.

Nice to have

• Strong GCP ecosystem experience, including BigQuery, Composer, Dataproc, Cloud Run, Dataplex, or Cloud Storage.
• Knowledge of data governance, access control, retention, classification, auditability, and compliance standards.
• Experience with observability for data systems, including metrics, alerting, data quality checks, and incident response.
• Knowledge of model monitoring concepts such as drift, data quality issues, performance degradation, bias checks, and alerting strategies.

Culture & Benefits

• International team working in a technology-focused environment.
• Annual salary reviews, promotions, performance bonuses, and an annual individual training and development budget.
• hirify.global Academy and unlimited access to LinkedIn Learning courses.
• 25 days of annual paid leave, increasing by one day per year up to 30 days.
• Health insurance with dental and optical coverage, meal vouchers worth 102.26 EUR per month, and a fully covered Multisport card.
• Fully covered public transport pass for Sofia, plus team-building and social activities.

Hiring process

• Submit a CV in English through the application form.
• Applications are reviewed confidentially, and only shortlisted candidates are contacted.