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Quazi Aritra Reyan

@quaziaritrareyan

Senior analytics engineer at Braintrust Talent Network refactoring BigQuery and Looker architectures for B2B SaaS organizations.

Bangladesh

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At Braintrust Talent Network, I audit and refactor BigQuery and Looker data architectures for B2B SaaS and enterprise tech organizations. I write LookML models and SQL pipelines, troubleshoot production issues, and implement access controls for secure data sharing.

At ujet.cx, I architected Looker dashboards and semantic models on BigQuery, configuring Explores and caching policies to improve query latency. I also resolved client issues within strict SLAs and supported data governance across product, analytics, and engineering teams.

Earlier, I built executive dashboards with Power BI and SQL at Wunderman Thompson MSC, and developed sales forecasting models and reports at Bashundhara Food & Beverage Limited. In freelance work, I analyzed data and created dashboards using Google Analytics, Power BI, and Excel.

Experience

Work history, roles, and key accomplishments

Current

Senior BI & Modern Data Stack Engineer

Current

Braintrust Talent Network

Apr 2026 - Present (6 months)

Audit, refactor, and scale Google Cloud Platform (BigQuery) and Looker data architectures for global B2B SaaS and enterprise tech organizations. Author production-grade LookML models and complex SQL transformation pipelines to optimize query compute costs.

Google Cloud Platform BigQuery Looker LookML SQL Data Governance Row level security Field Level Security Performance Optimization SLA Troubleshooting

BI Engineer

ujet.cx

Nov 2023 - Mar 2026 (2 years 4 months)

Architected Looker dashboards and LookML semantic models on GCP (BigQuery), configuring custom Explores and caching policies to optimize real-time analytics. Maintained a 95%+ client issue resolution rate within strict SLAs and partnered with global teams for data governance.

Looker LookML BigQuery GCP SQL Jira Data Governance Data Cataloging Stakeholder Management SLA Management

BI Developer – Data & Analytics

Wunderman Thompson MSC

Jan 2021 - Jul 2023 (2 years 6 months)

Built and deployed 15+ interactive executive dashboards using Power BI and SQL, accelerating reporting cycles for global client accounts. Coordinated with business, technology, and support teams for solution alignment.

Power BI SQL Dashboard Development Customer Relationship Management Reporting

Sr. Executive – MIS

Bashundhara Food & Beverage Limited

May 2019 - Jan 2021 (1 year 8 months)

Engineered automated MIS sales forecasting models to analyze multi-channel regional revenue streams. Developed data models, sales reports, and visualizations to support data-driven decisions.

MIS Sales Forecasting Data Modeling Data Visualization SQL Power BI

Business Intelligence Architect

Freelance

Dec 2016 - Apr 2019 (2 years 4 months)

Collaborated with sales and marketing teams to create digital marketing plans and perform data analysis. Handled data wrangling, insight generation, and dashboard creation using Google Analytics, Power BI, and Excel.

Google Analytics Power BI Excel Data Wrangling Data Analysis Dashboard Creation