Senior ETL Developer

Job Title : Senior ETL Developer

Location : Gurugram

Work mode : Monday- Friday (WFO) Odd Saturdays (WFH), Even Saturdays (Off)

Experience : 6+ Years in IT

Notice Period : Immediate to 15 days

Must-Have Experience : (Minimum 5+ years in ETL, with strong Apache NiFi expertise)

Required Skills : Apache NiFi, AWS, SQL, Data Pipeline development using ETL tool, Java / Python

Job Summary :

We are seeking an experienced Senior ETL Developer with deep expertise in Apache NiFi, PostgreSQL, and large-scale data pipelines. This role involves building and optimizing high-performance ETL workflows across massive data environments (handling thousands of processors, e.g., 5000+ in a single PG setup). The ideal candidate is a problem solver who thrives in fast-paced environments and has hands-on experience with scalable, reliable, and secure data systems.

Key Responsibilities :

• Design, develop, and maintain robust ETL pipelines for large and complex datasets.
• SQL and PL / pgSQL queries in PostgreSQL, ensuring efficiency in high-concurrency environments.
• Manage and scale environments with 5000+ processor instances in PostgreSQL or equivalent setups.
• Ingest, process, and validate data from multiple sources while ensuring data integrity, consistency, and availability.
• Monitor ETL workflows, identify bottlenecks, and apply performance tuning techniques.
• Collaborate with data architects, analysts, and business stakeholders to define and deliver data requirements.
• Implement and maintain data quality, validation, and reconciliation across systems.
• Document ETL processes, pipelines, and data architectures.
• Ensure compliance with data security, governance, and privacy standards.

Required Skills & Experience :

Preferred Qualifications :

Education : Bachelors or Masters degree in Computer Science, Data Engineering, or a related field.

(ref : hirist.tech)