Lead Data Engineer / Database Administrator Sembi is a leader in software quality and security management, offering a comprehensive suite of tools that enhance testing, strengthen security, and accelerate product delivery. By unifying industry-leading solutions like TestRail, Xray, Testmo, Ranorex, Kiuwan, and PreEmptive, Sembi empowers development teams to build software the world can rely on. The Lead Data Engineer / Database Administrator (DBA) is a senior technical leader responsible for owning the design, performance, and scalability of both the internal data warehouse and production databases. This role will lead the data engineering function, mentor junior data engineers, and ensure the reliability, performance, and quality of data pipelines across the company. This is a hands-on position that requires deep expertise in SQL, AWS infrastructure, ETL design, and BI tooling. Key Responsibilities Lead and mentor a small team of data engineers, promoting technical excellence and best practices. Own and manage AWS-based data infrastructure related to the data warehouse and ETL systems, including provisioning, system performance, and cost optimization. Design, implement, and maintain end-to-end ETL pipelines to support data ingestion, transformation, and integration from internal systems and third-party tools. Optimize queries and indexes for production application databases to ensure fast, reliable access. Triage and resolve data integrity issues across the warehouse and source systems. Partner with BI analysts and stakeholders to enable high-quality reporting and analytics. Support data tooling and BI platforms such as Yellowfin, Tableau, PowerBI and others. Ensure secure and performant connectivity between CDATA drivers and data warehouse. Requirements 5 years of experience in data engineering, data infrastructure, or database administration roles. Expert-level SQL skills, with strong experience in relational database performance tuning and optimization. Hands-on experience managing AWS infrastructure, including RDS, S3, EC2, and IAM. Proven ability to design and maintain scalable, maintainable ETL pipelines and data workflows. Experience owning both production and warehouse environments in a high-volume data environment. Strong communication and collaboration skills with cross-functional teams. Prior experience in a team lead or mentorship capacity over other data engineers. Experience with BI tools like Yellowfin, Tableau, Looker, or equivalent. Familiarity with version-controlled data workflows (e.g., dbt, Airflow). Knowledge of data security, compliance, and governance best practices. Exposure to scripting languages like Python for ETL tasks and automation. An Equal Opportunity Employer - All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. By submitting your application, you acknowledge that Sembi, Inc. will process and retain your resume and related personal information solely for recruitment and hiring purposes. Resumes of unsuccessful candidates will be securely deleted within twelve (12) months of the hiring decision, unless a longer period is required by law or you provide explicit consent for continued retention (e.g., for consideration for future opportunities). In compliance with applicable privacy laws, including the EU General Data Protection Regulation (GDPR), you have the right to request access to, correction of, or deletion of your personal information at any time by contacting ******. Sembi, Inc. does not sell candidate data and will ensure that all personal information is processed securely and in accordance with relevant data protection regulations. Referrals increase your chances of interviewing at Sembi by 2x Get notified about new Data Engineer jobs in European Union. We're unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. J-*****-Ljbffr