Senior Data Engineer (Python,BQ)

Location: Bucuresti, RO Who we are

You will join the OneMIS stream, responsible for management, regulatory \& risk reporting, and advanced analytics. Our mission includes enhancing data quality via KPIs and migrating data platforms to modern, cloud-native ecosystems. We operate in an agile environment, committed to responsible data practices.

We are looking for a Senior Data Engineer to design and deliver scalable data pipelines and high performance analytical solutions using SQL/BigQuery, Spark/PySpark, and Python on Google Cloud. This role focuses on building reliable, cloud native data products that enable advanced reporting, analytics, and decision making across the organization.

What you'll be doing

• Build scalable data pipelines: Design and deliver batch and real-time ETL/ELT pipelines across cloud environments to support analytics and reporting
• Develop SQL and BigQuery solutions: Write and optimize advanced SQL transformations and build performant, cost‑efficient BigQuery data models
• Develop Python workflows: Implement scalable data processing solutions using Python and PySpark, ensuring maintainable and high‑quality code
• Design data models and ensure quality: Build robust data models and apply validation practices to maintain accuracy and reliability
• Build cloud‑native data solutions: Use GCP services such as BigQuery, Dataflow, Cloud Composer, Pub/Sub, and GCS to build and operate modern data platforms
• Optimize performance and reliability: Troubleshoot complex pipeline issues and continuously improve compute, storage, and processing performance
• Collaborate using strong engineering practices: Work with engineering, analytics, and business teams while contributing to CI/CD, code reviews, and testing standards

What You'll Bring Along

• University degree in computer science or a comparable qualification
• At least 5 years of experience as a Data Engineer, building scalable data pipelines and working with cloud-based data ecosystems
• Strong expertise in SQL and hands‑on experience building performant datasets in BigQuery (or similar cloud data warehouses)
• Proven experience with Python and PySpark for scalable data processing in distributed environments
• Solid understanding of data modeling, ELT/ETL patterns, and data quality best practices
• Experience with Google Cloud Platform, particularly BigQuery, Dataflow, Cloud Composer, GCS, or equivalent cloud data services
• Hands‑on experience building scalable data pipelines (batch and near real‑time) in a cloud‑native environment
• Proficiency with version control, CI/CD pipelines, and automated testing frameworks
• Ability to troubleshoot and optimize performance across compute, storage, and processing layers

Nice to have:

• Experience with Infrastructure as Code (Terraform, Ansible, Chef)
• Knowledge of shell scripting
• Experience in financial services or regulated environments Document What’s in it for you

✔ New beginnings can be a challenge. We promise a smooth integration and a supportive mentor

✔ Pick your working style: choose from Remote, Hybrid or Office work opportunities

✔ Early bird or night owl? Our projects have different working hours to suit your needs

✔ Nobody is born an expert. Sharpen your tech skills with our sponsored certifications, trainings and top e-learning platforms

✔ We want you to stay healthy! Enjoy our Private Health Insurance ⁠– it’s custom-made for you

✔ A clear mind is a healthy mind. Attend individual coaching sessions or go one step further by joining our accredited Coaching School

✔ Make the most of our epic parties or themed events – they’re lovingly designed for our people and their families

✔ NTT DATA recruiters will never ask job seekers and candidates for payment or banking information during the recruitment process, for any reason. Please remain vigilant of third parties that may try to impersonate NTT DATA recruiters, either in writing or by phone, in an attempt to deceptively obtain personal data or money from you. All email communications from an NTT DATA recruiter will be associated with an @nttdata.com email address. NTT DATA will not use any non-NTT DATA or personal email domains (Gmail, Yahoo, etc.) or personal communication channels (WhatsApp, Facebook etc) at any time during the recruitment process. If you suspect any fraudulent activity, please contact us.

NTT DATA Romania is an equal opportunity employer and considers all applicants regardless to race, color, religion, citizenship, national origin, ancestry, age, sex, sexual orientation, gender identity, genetic information, physical or mental disability, veteran or marital status, or any other characteristic protected by law. We are committed to creating a diverse and inclusive environment for all employees.

Not the job for you? Perhaps you have a friend who would be a perfect fit.

What’s in it for you

• New beginnings can be a challenge. We promise a smooth integration and a supportive mentor
• Pick your working style: choose from Remote, Hybrid or Office work opportunities
• Early bird or night owl? Our projects have different working hours to suit your needs
• Nobody is born an expert. Sharpen your tech skills with our sponsored certifications, trainings and top e-learning platforms
• We want you to stay healthy! Enjoy our Private Health Insurance ⁠– it’s custom-made for you
• A clear mind is a healthy mind. Attend individual coaching sessions or go one step further by joining our accredited Coaching School
• Make the most of our epic parties or themed events – they’re lovingly designed for our people and their families

Make this the place you grow

Your unique talent is what matters. NTT DATA Romania is an equal opportunity employer and considers all applicants regardless to race, color, religion, citizenship, national origin, ethnicity, age, gender, sexual orientation, gender identity, genetic information, physical or mental disability, veteran or marital status, or any other characteristic.

Document Third parties fraudulently posing as NTT DATA recruiters

NTT DATA recruiters will never ask job seekers and candidates for payment or banking information during the recruitment process, for any reason. Please remain vigilant of third parties that may try to impersonate NTT DATA recruiters, either in writing or by phone, in an attempt to deceptively obtain personal data or money from you. All email communications from an NTT DATA recruiter will be associated with an @nttdata.com email address. NTT DATA will not use any non-NTT DATA or personal email domains (Gmail, Yahoo, etc.) or personal communication channels (WhatsApp, Facebook etc) at any time during the recruitment process. If you suspect any fraudulent activity, please contact us.

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