Fast Q&A Season 2 – Blockchain Learning Roadmap & Front‑End Career Tips

Preface Magic Brother’s “Fast Q&A” column is relaunched for Season 2. In this column, the author answers common questions from netizens, hoping the Q&A will inspire readers.

Blockchain Learning Path

Q: What is the learning route for blockchain technology?

A: The author explains that blockchain can be roughly divided into two layers – the chain layer and the application layer – analogous to an operating system and its applications.

If you want to work on the chain layer, you need to master low‑level technologies such as network communication, consensus algorithms, cryptography, and databases. Most public‑chain code is open source, providing many learning targets.

For front‑end engineers, the easier entry point is the application layer. A blockchain DApp consists of a client side and a contract side, which can be likened to the client and server of a traditional web app.

To get started with DApp development, the author refers to his own talks at QCon 2018 Shanghai:

Why Front‑End Engineers Should Master Blockchain DApp Development (Part 1) – https://mp.weixin.qq.com/s?__biz=MzIyMjE0ODQ0OQ==∣=2651552924&idx=1&sn=7ebeac043fe793cc80a8a028bc9ea2e0

Why Front‑End Engineers Should Master Blockchain DApp Development (Part 2) – https://mp.weixin.qq.com/s?__biz=MzIyMjE0ODQ0OQ==∣=2651552938&idx=1&sn=f7bb707fb14fd95994665803c3ecee7d

Q: Did you switch to blockchain because you worry front‑end development has limited growth?

A: The author believes front‑end development always has huge potential because it directly faces users and can become a competitive advantage for internet products.

The move into blockchain was driven by personal interest and the observation that many concepts and designs at the blockchain application layer align closely with front‑end development. The author’s front‑end skills remain an advantage in the blockchain world.

Recommended learning resources for front‑end engineers include Wang Shijun’s Juejin booklet “Blockchain Development Introduction” (http://t.cn/RuxYGUZ) and the author’s own QCon 2018 Shanghai talk on DApp principles.

For community interaction, the author has created a WeChat group; readers can join by sending the word “入群” to the “CSS魔法” public account.

Career Development Advice

Q: A 24‑year‑old front‑end engineer with 1.5 years experience asks why they haven’t received interview invitations, what kind of front‑end job they should target, and expected salary. Background: proficient in HTML5 and CSS3, weak in JavaScript (mostly jQuery), strong in performance optimization, SASS, Bootstrap, high school education, left university in junior year to start a business, later worked a job, now learning Node.js, planning to learn ES6 and Vue, aiming to move to Shenzhen. They have applied to about ten positions on Lagou with only “not suitable” replies.

A: The author identifies two main reasons the resume may be rejected:

Incomplete university education, which HR may view unfavorably during the initial screening.

Insufficient JavaScript skills; modern front‑end work requires solid JS knowledge and familiarity with at least one framework such as Angular, React, or Vue.

Suggested actions (for reference only):

Do not rush to relocate unless you have a stable, long‑term base in Shenzhen; consider applying to Beijing, Hangzhou, or other cities first.

Seek internal referrals rather than relying solely on cold applications, to bypass the HR screening stage.

Polish the resume to highlight strengths and project highlights; ensure the resume contains clear, standout points.

(Image credit: kalhh @ Pixabay)