IT Career Guides & Free Resources
Expert roadmaps, tutorials, salary guides and interview prep across Data Science, Generative AI, Python, Cloud & Analytics — written by GloryTecks trainers in Hyderabad.
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GCP Data Engineer Salary in India 2026: Remote Work, Google Cloud and Pay
Do remote jobs pay more in India, and does Google Cloud experience raise pay? Real 2025 survey data gives a careful answer. Remote and hybrid workers earned more than in-person workers, but mostly because of who employs them, and Google Cloud users were paid close to their peers. Here is the evidence.
SQL Optimization for Data Engineers
How to make SQL queries faster with evidence: reading the query plan, a full scan versus a composite index versus a covering index measured in engine steps on 2.9 million real taxi rows, why wrapping a column in a function cost twenty times more work, and the habits that carry over to SQL Server and warehouses.
Streaming Data into BigQuery: A Practical Guide
Streaming new events into BigQuery is well covered. Streaming changes, where rows are updated and deleted, needs BigQuery's change data capture. This practical guide covers the pseudocolumns, primary keys, sequence numbers and max_staleness, and simulates the ordering rules to show how out-of-order changes go wrong.
Partitioning Data in S3 for Athena Performance
A practical guide to partitioning S3 data for Athena: what a partition is, how to choose keys, and how partitions are registered. A real month of taxi trips is partitioned by day and by hour to show pruning, a filter that prunes nothing, stray partitions from bad timestamps, and the small-file cost of going too fine.
How to Become a Data Scientist in 2026 with No Experience
People do start as data scientists with no prior job, but rarely with nothing: in a 2025 survey, data scientists and AI/ML engineers in their first two years had typically been coding for six years, and nearly half were still learning at university. This guide shows what newcomers bring and how to build it.
Data Governance Basics Every Analyst Should Know
Data governance explained from an analyst's desk: who owns data and definitions, the six dimensions of data quality, handling personal data responsibly with reference to India's Digital Personal Data Protection Act, documenting lineage, certified datasets in BI tools, and a checklist for before you publish a report.