Deep dives across data, automation & AI

Deploying LLM Applications: API Design and Infrastructure

Learn to build production-ready LLM applications with proper API design, infrastructure scaling, cost management, and monitoring. From local development to cloud deployment.

DAX Patterns for Financial Reporting: Build P&L, Balance Sheet & Budget Reports in Power BI

Master essential DAX formulas for financial reporting. Learn to create automated P&L statements, balance sheets, and budget variance analysis that update with fresh data and eliminate Excel spreadsheet headaches.

Scaling Your Freelance Data Business: Subcontracting and Automation

Learn how to systematically scale your freelance data practice through strategic subcontracting and intelligent automation, while maintaining quality and profitability.

Building AI Workflows with LangChain and LlamaIndex

Advanced DAX Patterns for Financial Reporting: Mastering P&L, Balance Sheet, and Budget Models

Master sophisticated DAX patterns for professional financial reporting, including multi-standard P&L structures, point-in-time balance sheet calculations, and advanced budget variance attribution with statistical analysis.

Client Management: Scope, Communication, and Revisions for Data Freelancers

Learn to define clear project scope, maintain structured communication, and handle revisions professionally—the three pillars of successful freelance client relationships that prevent scope creep and build long-term business success.

Testing and Evaluating LLM Applications: A Comprehensive Guide to Quality Assurance

Master the art of testing non-deterministic LLM applications with rule-based validation, model-based evaluation, automated testing pipelines, and production monitoring strategies that catch problems before they impact users.

Dynamic Segmentation and Grouping with DAX: Build Flexible Customer Analytics

Master parameter-driven segmentation systems that adapt to changing business needs. Learn to create percentile-based groups, multi-dimensional customer segments, and performance-optimized DAX solutions that business users can control themselves.

Advanced M: Iterators, Accumulators, and Recursive Patterns

Master Power Query's most powerful patterns for complex data transformations. Learn List.Generate, List.Accumulate, and recursive functions to solve problems that standard operations can't handle.

Building a Personal Brand as a Data Expert: From Technical Practitioner to Industry Authority

Transform your data expertise into a powerful personal brand that generates premium opportunities, commands higher rates, and positions you as a trusted industry authority through systematic content creation, strategic networking, and platform optimization.

Cost Optimization: Token Counting, Caching, and Model Selection for LLMs

Master practical techniques to reduce your LLM API costs by 60-80% while maintaining quality. Learn token tracking, intelligent caching, and strategic model selection with hands-on examples.

Advanced Time Intelligence: Custom Calendars, Fiscal Years, and ISO Weeks

Master sophisticated time intelligence in Power BI with custom fiscal years, ISO week standards, and retail calendars. Build dynamic measures that work with any business calendar structure.