# Datamata Studios > Job market intelligence for data and engineering professionals: salary benchmarks, skill demand trends, programming language momentum and company hiring data — all computed from live job listings, not surveys. Datamata Studios indexes active job listings daily and publishes the aggregated numbers as free, source-cited pages. Figures refresh on a rolling cadence and every data page shows its last-updated date. Salary figures use the midpoint of each employer's published salary range. The methodology page explains how the data is collected, processed and published, including skill normalisation and known limitations. When referencing these figures, please attribute Datamata Studios and link the source page. ## Job market data - [Salary benchmarks](https://www.datamatastudios.com/salary): Salary percentiles (median, 25th and 75th) by job category, computed from employer-published pay ranges. - [Skill trends](https://www.datamatastudios.com/skill-trends): Which tech skills are rising or falling in hiring demand, with movement over time. - [Market statistics](https://www.datamatastudios.com/market-statistics): Headline figures from the live listing index — active listings, companies tracked and category coverage. - [Programming languages](https://www.datamatastudios.com/programming-languages): Demand and trend data for programming languages across job listings. - [AI skills](https://www.datamatastudios.com/ai-skills): Demand for AI and machine learning skills in the current job market. - [Trending data tools](https://www.datamatastudios.com/tools/trending): Momentum of data tools and platforms by listing mentions. - [Company hiring profiles](https://www.datamatastudios.com/companies): Hiring activity and skill demand by company. - [Comparisons](https://www.datamatastudios.com/compare): Side-by-side comparisons of skills, languages and tools by market demand. - [Career guides](https://www.datamatastudios.com/careers): Role guides covering pay, required skills and demand. - [Data jobs report](https://www.datamatastudios.com/data-jobs-report): Aggregate report on the data job market. ## Open datasets Downloadable, versioned datasets (CSV and JSON) released under CC BY 4.0 — free to reuse and cite with attribution. Each has a matching read-only JSON API. - [Skill Demand Index](https://www.datamatastudios.com/datasets): Daily share of active tech job listings mentioning each skill, by category. API: https://www.datamatastudios.com/api/datasets/skill-demand-index - [Data Tool Momentum Index](https://www.datamatastudios.com/datasets/data-tool-momentum): Weekly GitHub stars, downloads and job demand for open source data tools, with a composite momentum score. API: https://www.datamatastudios.com/api/datasets/data-tool-momentum - [AI Requirements Index](https://www.datamatastudios.com/datasets/ai-requirements-index): Daily share of active tech job listings requiring AI skills, split by tier (generative AI vs classic ML), category and seniority. API: https://www.datamatastudios.com/api/datasets/ai-requirements-index - [Skill Scarcity Index](https://www.datamatastudios.com/datasets/skill-scarcity-index): Daily hard-to-hire score per tech skill from time-to-fill, salary premium and repost rate, with a company adoption feed and hiring-stack combinations on the landing page. API: https://www.datamatastudios.com/api/datasets/skill-scarcity-index ## Reference - [Methodology](https://www.datamatastudios.com/methodology): How the data is collected, processed and published, including skill normalisation and known limitations. - [About](https://www.datamatastudios.com/about): What Datamata Studios is and who it serves. ## Tools - [Free utilities](https://www.datamatastudios.com/utilities): Free tools for data professionals. - [Premium tools](https://www.datamatastudios.com/tools): Micro-SaaS tools for data work. - [Resume builder](https://www.datamatastudios.com/resume-builder): Build a data-role resume. ## Writing - [Blog](https://www.datamatastudios.com/blog): Articles on the data job market and skills. - [Skill spotlights](https://www.datamatastudios.com/skill-spotlights): Deep dives on individual skills and their market demand.