Aritra Datta

About Aritra Datta

I specialize in transforming fragmented legacy environments into high-performance, audit-ready data ecosystems. With a track record of leading large-scale migrations and service transformations for industry leaders in UK Telecom and US Scientific sectors, I bridge the gap between complex engineering and C-suite strategic goals.Core Impact Highlights- Architectural Modernization: Led the migration of 10TB+ mission-critical data from legacy Oracle/MS SQL to AWS RDS (PostgreSQL), achieving a 65% reduction in query latency and 22% cost optimization- Governance & Risk: Established robust GDPR and PII frameworks with 100% audit pass rates across 200+ pipelines, ensuring zero data loss during high-stakes migrations- Operational Excellence: Engineered data quality frameworks that slashed pipeline failures by 95% and recovered 1,500+ analyst hours annually through automated self-service BI- Financial Fidelity: Expert in BigQuery warehouse redesign and dimensional modelling, delivering 70% faster ad-hoc querying and verifiable data reconciliation for regulatory oversight.Technical Toolkit:Cloud/Data Warehousing: AWS (RDS, VPC, CloudWatch), Google Cloud (BigQuery), PostgreSQL, Oracle, MS SQL.Data Engineering: Dimensional Modelling, AWS SCT, Data Lineage, Migration Strategy.Governance & BI: GDPR/PII Masking, Row Level Security (RLS), Power BI, Qlik.Recognition: TCS Contextual Masters Award | Domain Specialist in Data Analytics & Migration | 53+ Professional Certifications (Internal)Looking to connect: I am always interested in discussing Cloud Modernization, Data Governance frameworks, and System Transformation strategies. Whether you are looking for architectural insights, seeking a collaborator for high-stakes migrations, or interested in how to bridge the gap between technical engineering and C-suite reporting—let’s start a conversation.Open for roles:Currently exploring senior-level opportunities in System Transformation and Data Analytics & Migration.Direct Contact: a••••••••@gmail.comLinkedin - Contact-info

Experience

1. Senior Systems Engineer

   Tata Consultancy Services

   Jan 2020 — Present · Kolkata, IN

   TCS Career TreeILP Champion (CXP90)> Data Analyst – Openreach (British Telecom)> Technical Business Analyst – Openreach (British Telecom)> Data Migration Specialist – American Chemical Society (ACS)Throughout my career, I have specialized in bridging the gap between raw infrastructure data and C-suite decision-making by delivering- Cloud Modernization & Scalability: Led the migration of 10TB+ mission-critical data from legacy Oracle/MS SQL to AWS RDS (PostgreSQL), achieving a 65% reduction in P95 latency and 22% operational cost savings- Architectural Excellence: Redesigned BigQuery warehouses using dimensional modeling and data lineage tracking, resulting in 70% faster ad-hoc querying and $50K+ in annual cost optimization- Governance & Risk Mitigation: Established enterprise-grade data quality frameworks that reduced pipeline failures by 95% and ensured a 100% audit pass rate across 200+ mission-critical pipelines- Operational Efficiency: Automated financial reporting workflows using Power BI and Qlik with Row Level Security, recovering 1,500+ analyst hours per year- Mentored 20+ analysts and new hires, enabling adoption of governance, compliance, and automation best practices- Recognized as an SME for data migration, visualization, and governance in telecom and scientific domains.

Education

• Symbiosis Centre for Distance Learning

  Post Graduate Diploma , Business Administration and Management, General

• Chakdaha Ramlal Academy

  Secondary & Higher Secondary, General

  2005 — 2014

• Narula Institute Of Technology

  Bachelor of Technology (B.Tech.), Electrical, Electronics and Communications Engineering

  2014 — 2018