Cognizant (NASDAQ: CTSH) is a leading provider of information technology, consulting, and business process services, dedicated to helping the world's leading companies build stronger businesses. Headquartered in Teaneck, New Jersey (U.S.), Cognizant combines a passion for client satisfaction, technology innovation, deep industry and business process expertise, and a global, collaborative workforce that embodies the future of work. Cognizant is a member of the NASDAQ-100, the S&P 500, the Forbes Global 2000, and the Fortune 500 and is ranked among the top performing and fastest growing companies in the world.
Our Culture
Your passion, integrity and experience are integral to Cognizant's success. You will join a dynamic and expanding global leader in IT and Business consultancy where you will be valued for who you are. We take pride in our partnership with our clients, so your ability to add value and provide exceptional service to our clients is fundamental to your success. In return, you will be presented with opportunities to develop your career and collaborate with talented colleagues in a supportive, diverse environment.
At Cognizant we recognize that companies that are open and welcoming to a multi-culturally diverse workforce will thrive with fresh perspectives and collaborative knowledge. Cognizant focuses on promoting & increasing gender diversity and providing a workplace which encourages great participation and an equal playing field, where merit and accomplishment are the only criteria for success.
Job Summary:
We are seeking an experienced Principal Data Architect professional to lead end‑to‑end migration from legacy systems to modern data platforms. The role involves defining migration strategy and architecture, overseeing execution, ensuring data quality and reconciliation, and managing cutover with minimal business disruption. The candidate will drive governance, handle high‑volume mission‑critical data, and provide leadership across teams to ensure successful, compliant, and efficient data transformation.
Roles & Responsibilities:
- Define the overall Data Migration Architecture for Mainframe modernization programs
- Design scalable source‑to‑target data models, mapping legacy structures to modern platforms
- Establish migration patterns (big‑bang, phased, wave‑based, or domain‑wise)
- Drive data decomposition strategies for large and tightly coupled mainframe datasets
- Ensure architecture aligns with performance, security, audit, and compliance requirements
- Lead end‑to‑end data migration delivery across multiple pods / workstreams
- Oversee data extraction, transformation, loading (ETL/ELT) from Mainframe sources
- Govern batch sequencing, dependency management, restartability, and error handling
- Ensure zero or minimal business disruption during migration cycles
- Coordinate with application, testing, and infrastructure teams for integrated delivery
- Define and enforce data validation frameworks, including:
- Row counts & record balancing
- Control totals and hash reconciliations
- Referential integrity checks
- Business rule validations
- Own pre‑ and post‑migration reconciliation sign‑off
- Drive defect triage and root cause analysis for data discrepancies
- Ensure auditability and traceability across migration runs
- Plan and execute mock migrations and dress rehearsals
- Lead cutover planning, including rollback and contingency strategies
- Support parallel runs and controlled transition from Mainframe to target systems
- Work closely with business stakeholders to validate data correctness post go‑live
- Establish migration governance frameworks and reporting mechanisms
- Identify and mitigate data migration risks, including data loss, corruption, and performance bottlenecks
- Provide regular status, risk, and dependency updates to senior stakeholders
- Support client workshops on migration approach, risk posture, and readiness.
- Mentor migration architects, data engineers, and testing teams
- Drive best practices, accelerators, and reusable assets for Mainframe migration
- Contribute to future‑state data strategy beyond migration (modernization, analytics, optimization)
Skills Required:
The role requires deep, hands‑on expertise in Mainframe Data Migration, including:
- Legacy Mainframe systems (COBOL, JCL, DB2, VSAM, IMS) and their data structures
- End‑to‑end legacy‑to‑target data migration covering extraction, transformation, validation, and reconciliation
- Migration of high‑volume, mission‑critical telecom data with strict SLAs and regulatory requirements
- Strong understanding of batch processing, file‑based data movement, and scheduling frameworks
- Experience migrating data to modern data platforms (Cloud DW, Lakehouse, Analytics platforms)
- Data quality, reconciliation, control totals, audit checks, and post‑migration assurance.
- Managing cutover, dress rehearsals, and parallel runs in large transformation programs
Benefits:
Joining Cognizant will give you the opportunity to learn and collaborate with some of the most talented people in the industry, while having your finger on the pulse of emerging industry trends and working on the cutting edge of technology in your field of expertise.
We recognize that our people perform at their best when they feel valued as significant contributors and that is why at Cognizant, taking care of our employees is a priority:
· You can pursue innovative career tracks and opportunities here
· You can enhance your professional development through education and dedicated training
· We’ll give you the skills you need to keep pace with the changing workplace while our compensation, benefits and wellness packages help you stay healthy and plan for the future.
Next Steps:
Please reach out to our friendly and welcoming team today to apply and register your interest for this full-time role. We'd love to help you get your next role and enable you to fulfil your professional ambitions.
コグニザントのコミュニティ：
私たちは、互いを尊重し支え合う優秀な人材の集まりです。社員一人ひとりが成長し、力を発揮できるよう、エネルギッシュで協力的かつインクルーシブな職場環境を大切にしています。
- コグニザントは、世界中に30万人以上のアソシエイトを擁するグローバルコミュニティです。
- 私たちは、より良い方法を夢見るだけでなく、それを実現します。
- 人、クライアント、企業、地域社会、そして環境に対して、常に「正しいこと」を行うことで責任を果たします。
- あなたにとって最適なキャリアパスを築くことができる、革新的な環境を提供します。
私たちについて：
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として、AI投資を企業価値へとつなげるフルスタックのAIソリューションを提供しています。業界、業務プロセス、エンジニアリングに関する深い専門性を強みに、各企業固有のコンテキストをテクノロジーシステムに組み込み、人の力を最大限に引き出すとともに、具体的な成果の創出と、急速に変化する世界におけるグローバル企業の競争力維持を支援します。詳しくは、当社ウェブサイト www.cognizant.com をご覧ください。
コグニザントは機会均等を重視する雇用主です。応募者および候補者は、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、または連邦、州、地方の法律で保護されているその他の特性に基づいて差別されることはありません。
免責事項：
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、現住所または政府発行の身分証明書の提示が必要となる場合があります。