Koushik De
San Jose
Summary
Senior Engineering Manager with 19 years of experience building large-scale data platforms, customer analytics ecosystems, and mission-critical decision systems. Proven leader of high-performing engineering teams delivering petabyte-scale platforms that power finance, marketing, and product strategy.
Expert in architecting distributed data systems across cloud and on-prem ecosystems, with deep specialization in Customer 360, large-scale data warehousing, and advanced analytics infrastructure.
Recognized for driving cross-functional programs from concept to production, improving data reliability, reducing cost, and enabling executive decision-making through trusted insights.
Overview
19
19
years of professional experience
Work History
Senior Engineering Manager, Data & Analytics
APPLE INC.
Cupertino
01.2019 - Current
- Lead development of large-scale customer analytics platforms delivering enterprise insights that inform corporate strategy, financial planning, and product decisions.
- Lead critical components of Apple’s Customer Analytics ecosystem, delivering enterprise insights used for executive decision-making and operational efficiency.
- Scale data systems supporting real-time intelligence on Apple’s 2.5+ installed base, contributing to financial reporting and long-term strategy.
- Drove cross-functional initiatives across engineering (Appstore, iCloud, FindMy, Insights, IDMS, Device Services), product, marketing, finance, and legal organizations to enhance collaboration and alignment on strategic goals.
- Delivered business-critical analytics on installed base metrics, customer behavior insights, upgrade patterns, and penetration analysis to inform strategic decision-making.
- Architect distributed data pipelines and analytics frameworks (Snowflake, Spark, Airflow, AWS), improving performance, scalability, and reliability.
- Architect highly scalable application, which helped in cross platform data transfer, 10X faster than other custom built tools in Apple.
- Championed large-scale engineering optimizations that materially reduced data platform costs (Teradata/Snowflake) while increasing performance and throughput.
- Led one of the most complex data platform migrations from Teradata to Snowflake, redesigning core processes to achieve scalable, high-performance operations.
- Provided executive-level briefings that translated complex analytics into actionable insights, enabling informed decision-making at the executive level.
Manager, Data Engineering
Oportun Inc.
02.2019 - 07.2019
- Led post-acquisition data integration into the enterprise analytics platform, delivering a single source of truth for enterprise risk modeling and advanced analytics.
- Modernized AWS-based data platform integrating internal and third-party data sources.
- Enabled structured processing of complex datasets including high-variability schemas.
- Accelerated Data Science team’s shift to distributed analytics by implementing Spark-based pipelines on semi-structured data, delivering a 12X reduction in Redshift/Athena cost while accelerating processing speed by 15X.
Architect (Apple Engagement)
Infosys Ltd.
01.2011 - 01.2019
- Architected Customer 360 intelligence for Apple’s Campaign Management ecosystem, unifying cross-channel signals (Retail, App Store, iCloud, device activity, sign-on, AppleCare) into a scalable audience targeting foundation.
- Built end-to-end attribution and closed-loop optimization framework linking campaign engagement to product purchases, enabling data-driven audience selection and accurate ROI measurement.
- Automated Customer 360 aggregation and feedback pipelines, reducing recurring campaign processing time by 10× and increasing targeting effectiveness, driving 3× ROI improvement.
- Engineered large-scale distributed data platform on one of the world’s largest Teradata environments with hybrid Teradata–Hadoop architecture, enabling high-volume processing, enterprise analytics, and advanced campaign reporting.
- Led performance engineering and scalability initiatives that significantly improved system throughput, reliability, and operational efficiency.
Software Engineering Roles
Wipro Technologies
01.2007 - 01.2011
- Developed and integrated enterprise reporting solutions (Microsoft SSRS) to ERP platform (Infor LN).
- Developed customized enterprise CRM solutions (Microsoft Dynamics 365) for Microsoft client, enabling large-scale customer engagement, workflow automation, and data integration using C# and ASP.NET.
Education
Bachelor of Electrical Engineering -
West Bengal University of Technology
01.2007
Skills
- Enterprise data platform architecture
- Customer 360 and behavioral analytics
- Distributed systems and big data
- Real-time streaming and event pipelines
- Engineering leadership and team building
- Cross-organizational program execution
- Data governance and security
- Performance optimization at scale
- Cloud and hybrid infrastructure
- Stakeholder management
- AWS and cloud infrastructure
- Kubernetes orchestration
- Data platforms including Snowflake, Teradata, Redshift, PostgreSQL, Amazon Athena, Microsoft SQL Server
- Big data technologies: Spark, Kafka, Hadoop, Hive, Cassandra
- Programming languages: Python, SQL, Java, Unix shell
- Workflow orchestration with Airflow, Oozie, Autosys
- Storage solutions: S3, HDFS
- Analytics and BI tools: Tableau, SSRS, SSAS, Talend
- CRM systems and customer 360 strategies
- Observability tools including Splunk
Certifications Awards
- Microsoft Certified Technology Specialist
- DataStax Cassandra Certified Developer
- Infosys Best Team Award
- GBI Performance Award
- Most Valuable Player
Selected Achievements
- Delivered enterprise Customer 360 platform enabling strategic planning across business units.
- Led development of scalable analytics infrastructure handling extremely high-volume datasets.
- Reduced operational risk through resilient architecture and monitoring systems.
- Recognized for technical excellence and leadership across multiple organizations.
Core Leadership Strengths
- Enterprise Data Platform Architecture
- Customer 360 & Behavioral Analytics
- Distributed Systems & Big Data
- Real-Time Streaming & Event Pipelines
- Engineering Leadership & Team Building
- Cross-Org Program Execution
- Data Governance & Security
- Performance Optimization at Scale
- Cloud & Hybrid Infrastructure
- Stakeholder Management (Finance, Marketing, Product, Engineering)
Timeline
Manager, Data Engineering
Oportun Inc.
02.2019 - 07.2019
Senior Engineering Manager, Data & Analytics
APPLE INC.
01.2019 - Current
Architect (Apple Engagement)
Infosys Ltd.
01.2011 - 01.2019
Software Engineering Roles
Wipro Technologies
01.2007 - 01.2011
Bachelor of Electrical Engineering -
West Bengal University of Technology