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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How to Get Your First Data Job with No Experience
Newcomers are a minority in data roles, but they do get hired, and the data shows where: smaller companies, internships that convert, and roles where learning on the job is expected. Answers from 282 data professionals in their first two years show the doors that open most often.
Synthetic Data Generation with LLMs: A Practical Guide
Language models can produce training examples on demand, which is tempting when real data is scarce. This guide generates customer messages for five banking intents with a local model, compares them with real ones, and trains the same classifier on synthetic, real and mixed data, tested on 200 real messages.
Linux Interview Questions for Data Engineers
Linux rounds for data engineers are about handling data files from the command line and writing shell steps that fail loudly. Eight questions are answered with real commands on a 2-million-line electricity file and the NYC taxi zone table: sizing files, awk sums, counting, pipefail, parallel chunks, find, export.
GCP Professional Data Engineer Certification Guide
The Professional Data Engineer exam tests design judgement more than commands. This guide sets out the facts from Google's exam page, the five sections and their weights, a table matching the product names in the exam guide to the names in today's documentation, and a way to prepare by building.
Probability Interview Questions for Data Science
Probability questions reward one habit above all: check your answer two ways. Eight classic and data-based questions are solved here with exact fractions and with simulation, then on 12,330 real shopping sessions, where the binomial answer turned out wrong for a reason worth explaining in an interview.
Loading Data into BigQuery: Batch and Streaming
BigQuery can be loaded in batches from files or fed continuously through the Storage Write API. This guide compares the methods by latency, cost, limits and what a retry does, with documented commands, a model of at-least-once against exactly-once delivery, and a rule for choosing.