2025 Mid-Year Data Job Market Trends: Skills, Hiring Preferences, and Career Advice

This is a half‑year summary and personal notes, highlighting the key points.

Since 2022 I have been coaching students on resume writing and job hunting; the program has been running for nearly three years and we summarize every six months. This article presents a market‑oriented, demand‑driven analysis of 120+ interview experiences over the past six months, summarizing current recruitment trends and skill requirements.

We thank the teachers of the Big Data Advanced Class for their behind‑the‑scenes work reviewing resumes and summarizing issues, despite being busy professionals.

First, Positioning

The content is positioned as follows:

Targeting recruitment for medium to large companies, including well‑known internet giants, listed traditional businesses, new energy, finance‑plus‑internet firms, and leading vertical‑industry companies (non‑outsourced).

Focusing on mid‑to‑senior data roles such as senior engineers, experts, and technical leads.

Emphasizing pure technical requirements for business‑oriented development positions (non‑engine) without team‑management responsibilities.

Readers should identify their own positioning; for guidance on role selection, see the referenced article on data development direction choices.

Recent Half‑Year Changes and Market Preferences

The overall market has not improved noticeably in 2025; pressure remains high and both internal and external environments are challenging, making job hunting difficult and requiring strong psychological preparation.

1. Traditional data questions are decreasing, while open‑ended questions are rising. Traditional data questions have clear answers and are largely rote; they now account for a much smaller portion of interviews compared to 3‑5 years ago when they made up over 50% of content. As the industry matures, interview focus has shifted from basic principles to problem‑driven reasoning, with solutions based on open‑source communities and cloud platforms.

Consequently, candidates must move from isolated skill points to best‑practice, systematic answers.

Open‑ended questions have no standard answer but require broad perspective, independent thinking, and familiarity with open‑source and cloud solutions.

2. Lakehouse and real‑time skills have become essential. Core technical positions now demand broader expertise, extending from offline and governance topics to real‑time computing and lakehouse architectures. While offline work remains dominant, interviewers often test more challenging topics to identify top talent, and many companies prefer newer, cost‑effective solutions over legacy systems.

Future cross‑functional and senior roles raise the bar further; lacking exposure to cutting‑edge technologies will diminish competitiveness.

3. Stay close to core business, avoid purely functional roles. Companies are tightening cost controls; candidates should prioritize core‑business positions rather than support or functional departments for longer‑term stability.

4. Strong communication and structured thinking are crucial. Effective expression and structured reasoning are highly valued in interviews across all scenarios.

Final Summary

Basic advice such as writing a good resume and preparing thoroughly for interviews is reiterated but not detailed here. In the current environment, the job search cycle ranges from one to three months, requiring a long‑term mindset and humility.

Most interview summaries have been updated to the knowledge community, and one‑on‑one mock interviews have been provided based on individual situations.

By mid‑2025, the job‑search timeline has lengthened, and many participants remain pessimistic, with few expressing confidence; some even feel emotionally drained.

However, pessimists are often right; optimists eventually succeed.

As quoted from a favorite blogger:

“The Old Testament – Book of Kings records that the prophet Elijah walked forty days and nights to Mount Horeb, lived in a cave, his heart ashen and dead. He faced strong wind, earthquake, and fire, yet what he sought was not in the wind, earthquake, or fire. After the fire came a small voice, a whisper, pointing to the heart; that voice said, ‘Do not be afraid, you are not alone. I have left seven thousand among the people, those who have not bowed to Baal.’”