Oracle DBA

Req ID: 394820 

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.

We are currently seeking a Oracle DBA to join our team in Bangalore, Karnātaka (IN-KA), India (IN).

Senior Data Performance Engineer (Oracle, dbt, Airflow)

About the role

This role focuses on making data workflows built on dbt and Apache Airflow on Oracle run fast and reliably. Workflows migrated from Informatica must produce accurate data and perform as well as or better than the process they replace.

As a member of the performance engineering team, you will:

1. Troubleshoot. Find the root cause of slow data workflows across the database, transformation and orchestration layers.
2. Tune. Fix the bottleneck and prove the improvement with measurements, without affecting data accuracy.
3. Templatize. Turn each fix into a reusable pattern, template or guideline that other developers can apply on their own.

This is a hands-on role for an engineer who enjoys tracking down where time is lost and building solutions that keep the same problem from coming back.

What you'll do

Troubleshoot performance end to end

• Profile slow workflows across the full execution path: scheduler, Airflow, containers, dbt and database.
• Separate actual database processing time from framework and orchestration overhead.
• Set performance baselines and compare results against legacy Informatica runtimes.
• Identify root causes and explain them clearly to technical and non-technical audiences.

Tune across every layer

• Oracle: Tune SQL and PL/SQL using execution plans, SQL Monitor, AWR/ASH and wait-event analysis. Resolve optimizer, cardinality, memory and parallelism issues. Tune distributed queries across database links so processing happens where the data lives.
• dbt: Design efficient models and materializations. Reduce parsing, compilation and run overhead, and keep large projects fast.
• Airflow: Design efficient DAGs and tasks. Reduce scheduling and start-up delays, and make workflows reliable through sound retry, restart and failure handling.
• Find and fix data accuracy and reliability issues uncovered during tuning.

Build reusable templates and standards

• Turn proven fixes into reusable templates, macros, utilities and shared components.
• Design shared changes so they can be adopted gradually and rolled back safely.
• Create tuning playbooks, troubleshooting checklists and automated performance checks that catch regressions before release.
• Mentor developers and review designs so new workflows perform well from the start.

Collaborate and influence

• Present findings, options, trade-offs and measured results to developers, architects, DBAs and leadership.
• Work with architecture and database teams to get approval for platform-level improvements.

What you bring

Required qualifications

• 8+ years of experience in data engineering or database engineering, with significant hands-on Oracle performance tuning.
• Production experience with dbt and an understanding of how dbt builds and runs models.
• Production experience with Apache Airflow DAG design and operations.
• Working knowledge of ETL concepts, ideally including Informatica PowerCenter.
• Working knowledge of Linux, shell scripting and Python.
• A data-driven approach: measure first, isolate the problem, change one thing and prove the result.
• Experience turning one-off fixes into standards or tools used by others.
• Strong written and verbal communication skills.

Nice to have

• Hands-on Informatica PowerCenter experience, including migration to modern platforms.
• Docker and container-based execution.
• Enterprise schedulers such as Control-M.
• Large-scale dbt projects or the dbt Python API.
• Oracle RAC and parallel execution.
• Git-based workflows and CI/CD for data pipelines.
• Experience in financial services or another regulated industry.

About NTT DATA

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com, @nttdatafed.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us.

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