Cognizant (NASDAQ: CTSH) is a leading provider of information technology, consulting, and business process outsourcing services, dedicated to helping the world's leading companies build stronger businesses. Headquartered in Teaneck, New Jersey (U.S.). Cognizant is a member of the NASDAQ-100, the S&P 500, the Forbes Global 1000, and the Fortune 500 and we are among the top performing and fastest growing companies in the world.
Job Title: Senior Data Engineer – Snowflake & Python
Job Summary:
We are seeking an experienced Senior Data Engineer with strong expertise in Snowflake, Python, SQL, and modern data engineering practices. The ideal candidate will design, build, optimize, and support scalable data pipelines and cloud-based data solutions, working with large volumes of structured and semi-structured data.
The role requires hands-on experience with ETL/ELT development, Snowflake data warehousing, Python automation, data quality, performance optimization, CI/CD, and production troubleshooting.
Key Responsibilities
Design, develop, and maintain scalable ETL/ELT data pipelines using Python, SQL, and Snowflake.
Build ingestion and transformation processes for data from sources such as Oracle, SQL Server, APIs, flat files, and cloud object storage.
Develop and optimize Snowflake objects including databases, schemas, tables, views, stages, streams, tasks, and stored procedures.
Write complex and performance-optimized SQL queries for data transformation and analytics workloads.
Work with structured and semi-structured formats including CSV, JSON, Parquet, and XML.
Perform Snowflake performance tuning through query analysis, warehouse sizing, clustering strategy, and optimization of data-processing patterns.
Implement data-quality controls including source-to-target validation, reconciliation, duplicate checks, null checks, schema validation, and exception handling.
Design effective logging, error handling, retry, monitoring, and alerting mechanisms for production pipelines.
Troubleshoot data discrepancies, failed pipelines, performance bottlenecks, and production incidents.
Apply Snowflake security concepts including RBAC, roles, privileges, secure views, and data-access controls.
Participate in code reviews and ensure solutions meet engineering, security, scalability, and maintainability standards.
Build and maintain CI/CD pipelines using Git-based development and deployment practices.
Create and maintain technical documentation, data mappings, operational procedures, and implementation specifications.
Mentor junior engineers and provide technical guidance on Python, SQL, Snowflake, and data-engineering best practices.
Required Qualifications
7+ years of experience in data engineering, ETL/ELT, data warehousing, or related development.
Strong hands-on development experience with Snowflake.
Advanced proficiency in Python for data processing, automation, APIs, and pipeline development.
Advanced SQL skills, including joins, CTEs, window functions, stored procedures, query optimization, and large-volume data processing.
Strong troubleshooting and root-cause-analysis skills.
Experience implementing data-quality, reconciliation, monitoring, and exception-handling frameworks.
Primary Skills : Snowflake, Python, SQL, ETL/ELT, Data Warehousing
Secondary: Git, CI/CD, REST APIs
Snowflake: Streams, Tasks, Stages, Snowpipe, RBAC, Query Optimization, Warehouses
Python: Pandas, APIs, file processing, exception handling, logging, automation
Data: Oracle, SQL Server, CSV, JSON, Parquet, XML
Engineering: Data Quality, Reconciliation, Monitoring, Performance Tuning, Production Support
Candidate Profile
The successful candidate should be a hands-on senior engineer capable of owning a data pipeline from source ingestion through Snowflake transformation and production support. They should be comfortable solving complex Python/SQL problems, optimizing Snowflake workloads, investigating data-quality issues, and designing maintainable solutions rather than simply developing one-off ETL
jobs. Application Accepted: 10/30/2026
The annual salary for this position is between $130,000 - $135,000 depending on experience and other qualifications of the successful candidate.
Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:
· Medical/Dental/Vision/Life Insurance
· Paid holidays plus Paid Time Off
· 401(k) plan and contributions
· Long-term/Short-term Disability
· Paid Parental Leave
· Employee Stock Purchase Plan
Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable language
Our strength is built on our ability to work together. Our diverse backgrounds offer different perspectives and new ways of thinking. It encourages lively discussions, creativity, productivity, and helps us build better solutions for our clients. We want someone who thrives in this setting and is inspired to craft meaningful solutions through true collaboration.
If you are content with ambiguity, excited by change, and excel through autonomy, we’d love to hear from you!
コグニザントについて
コグニザント（NASDAQ: CTSH）は、AI Builderおよびテクノロジーサービスプロバイダーとして、お客様にフルスタックのAIソリューションを構築することで、AI投資と企業価値を結ぶ架け橋となっています。業界、ビジネスプロセス、エンジニアリングに関する当社の深い専門知識を活かし、組織固有のビジネス環境をテクノロジー・システムに組み込みます。これにより、人間の可能性を最大限に引き出し、確かな成果を実現するとともに、急速に変化する世界においてグローバル企業が常に一歩先を行くための支援を行っています。 詳細については、cognizant.ai をご覧ください。
雇用に関する追加情報
本募集に記載されている報酬情報は、掲載日時点で正確なものです。Cognizantは、適用される法令に従い、いつでも本情報を変更する権利を留保します。
応募者は、対面またはビデオ会議による面接への参加を求められる場合があります。また、各面接の際に、現在有効な州政府または政府発行の身分証明書の提示を求められる場合があります。
Cognizantは機会均等雇用主です。応募および選考において、人種、肌の色、性別、宗教、信条、性的指向、性自認、国籍、障がい、遺伝情報、妊娠、退役軍人の地位、その他連邦法・州法・地方自治体の法律により保護されるいかなる特性に基づく差別も行いません。
