I pulled up 4 salary sites last month while prepping a comp negotiation for a friend. Glassdoor said $133K. Indeed said $136K. PayScale said $100K. 6figr said $201K. Same title: "Senior Data Engineer." Same country. Same year. The data engineer salary 2026 landscape isn't just noisy; it's structurally broken, and it's costing people real money.
The spread between the lowest and highest number? Over $100K. For the exact same job title. If you're a data engineer and you can't trust salary data, you're walking into negotiations blindfolded. And I've watched people leave tens of thousands on the table because they trusted a number that was already stale before they opened the browser tab.