Jeff Gillis is the co-founder and Chief Technical Officer of The Interview Guys, the career-advice site he and Mike Simpson launched in 2013. Over the last 13 years, Jeff has been the strategic mind behind how the site connects with job seekers, helping reach more than 100 million people worldwide through content, tools, and product development.
His background is in IT and digital strategy, which shapes how he approaches the modern job search: ATS systems, resume optimization, the mechanics of how recruiters and platforms actually filter candidates, and the tactics that work when applying through online portals. Jeff has published more than 50 in-depth career resources including case studies, comprehensive guides, and video courses, and his work has appeared in INC, MSN, and ZDNet.
Articles credited to Jeff on The Interview Guys are reviewed and edited by him personally, with a focus on resume strategy, job-search tactics, and how to actually get past the digital gatekeepers most candidates struggle with.
Here’s the gap this specialization is built to close. You can talk about data all day, but the second a hiring manager asks whether you’d put a workload in Azure SQL Database or Cosmos DB, the conversation gets real, and a lot of smart people freeze. Microsoft Azure Data Fundamentals DP-900 Exam Prep, built and…
When a hiring manager opens a resume for a data engineering role, they are scanning for one thing fast: can this person actually move data through a real cloud system without breaking it? Most certificates fail that test because they teach theory and quizzes. This one, the DeepLearning.AI Data Engineering Professional Certificate, carries a 4.8…
Here’s a number that should change how you job hunt: only 8% of recruiters configure their ATS to auto-reject resumes based on content or match scores. The other 92% rely on human review, guided by knockout questions and optional scores, according to Enhancv’s study of 25 U.S. recruiters. So all that energy you’re pouring into…
When a hiring manager at a small accounting firm opens a stack of resumes, they’re scanning for one thing first: can this person actually use QuickBooks Online without me holding their hand? That single question kills more bookkeeping applications than anything else, because plenty of folks list ‘detail-oriented’ and zero proof they can reconcile an…
Here’s a number worth sitting with. Seventy percent of talent acquisition professionals say the single biggest barrier to internal mobility isn’t budget, headcount, or skills. It’s a manager who refuses to let a good person leave their team. We call this the manager hoarding tax, and you’re probably paying it right now without knowing it….
Here’s the number that should stop you mid-scroll: the average recruiter is now fielding roughly 400% more applications than they were just a few years back, a figure Greenhouse CEO Daniel Chait has put closer to 412% since 2023, according to Fortune’s reporting. And 93% of those applicants never make it to an interview. That’s…
When a hiring manager opens a stack of resumes for an entry-level data engineering role, they’re scanning for one thing fast: can this person actually move data without breaking production? Most applicants list buzzwords and hope nobody asks follow-up questions. The IBM Data Engineering Professional Certificate is built to give you something better than buzzwords,…
Here’s a number that should rearrange how you think about your career: 53% of organizations say the critical skills in their industry become obsolete within three years or less. And 15% say the window is under a year, per Fuel50’s Talent Mobility research. Read that second figure again. For one in seven companies, the specialized…
You’ve probably nodded along in a meeting while someone threw around “p-value” and “confidence interval,” then quietly hoped nobody asked you to explain it. Or you’ve stared at a model’s predicted probabilities and felt like you were trusting the output without really understanding it. That gap in statistical reasoning is one of the most common…
Here’s a number that should change how you hear the words “best and final”: about 40% of job offers in a major NBER study were made verbally, which let employers withhold a written offer without ever formally taking it back. That’s not a courtesy. That’s a structural choice, and it cuts both ways. Our read…
