It is not the most straightforward task to choose a candidate out of many that applied.
Previously known as LiveScript, this programming language was first released back in 1995 as an integrated part within Netscape Navigator 2.0 (web browser), but later named LiveScript.
Helpful tips for a pre-screening interview
A critical segment of the whole finding and hiring process is to have a talent acquisition specialist conduct the pre-screening of the developers. These specialists have specific questions and assessment tasks that help evaluate a candidate's expertise.
Another thing they check is the linguistic aspect or proficiency in English to check if there will be potential challenges in the daily communication between the client and developer.
Also, soft skills are crucial too, such as communicativeness, punctuality of the developer for the call, and the environment around the developer. Professional experience combined with appropriate appearance and attitude always bode well.
- Asynchronous programming (Prototypes, Scope, Hosting, Coercion, etc.)
- Cross-browser code writing
- React JS (library)
- Node JS (tool)
For this, we also asked Diamant Isufi, a software engineer in Proxify, to describe more about what else does the developer need to know, and he said:
“Besides the problem-solving skills, the developer must master all JS basics. Starting from how it works, when it is used and why, but also accurately describing simple data types, variables, functions, classes, constructor functions, and modularity.”
The non-technical skills are a big chunk of the overall interview impression.
The recruiters know that not everything is solely expertise, technical knowledge, and experience. The essential minimum expectation is, of course, English language proficiency and being on time for the interview. Punctuality is a good indicator of the level of responsibility and respect the developer has for the recruiter, company, or client.
But, it doesn’t stop here. It is good, even strongly recommended, that the developer attends the call in a suitable environment/space. The environment needs to be neat, with enough lighting, good quality camera, and a headset (for a clear sound) if possible. The candidate should follow an appropriate dress code and be in a room without loudness or distractions.
Another thing for recruiters to focus on is the conversational skills of the candidate or how they handle the conversation flow. Listening without interruptions, talking clearly, or politely asking to repeat a question are plus points for the developer and add ‘points’ to their communicativeness aspect.
Many questions are relevant for testing the expertise of the JS developer, but here are some suggestions that you could use during the interview:
- What is isNaN, and how is it used?
- Explain what is ‘negative infinity.’
- What are ‘global variables’?
- Explain the difference between SessionState and ViewState
- What are ‘looping structures’?
- Explain the meaning of ‘NULL’ in JS
- How is ‘Void (0)’ used?
- What is the ‘pop()’ method?
- State the difference between ‘.call()’ and ‘.apply()’
- How do ‘deferred scripts’ in JS work?
- Knowledge of React JS, Node JS, and TypeScript
- Knowledge of React and Redux
- Good cross-browser coding skills
- Asynchronous programming
- An analytical mindset that keeps up with fast-paced novelties
- Knowledge of how various browsers or platforms function
- Knowledge of Meteor (JS platform)
- Version control experience
Diamant here further added:
“The developer also needs to know about ES7 (exponentiation generator). In general, I would also assess the problem-solving skills and ask about the frameworks and libraries of JS. After this, I would ask about their experience with Angular, Vue, and React. But, also overall, the technologies they need to know well are DOM (document object model), Node.js, NPM and Yarn, and NVM (node version manager), too.”
Also, they need to be able to work on desktop apps, hybrid mobile apps, games development, backend web apps, microservices, network services, as well as embedded apps with specific tools.
Additionally, a great developer candidate needs to know about ECMAScript frameworks and versions and use the best IDE (integrated development environment).
There are challenges and certain obstacles during hiring processes, but it is important to recognize or anticipate them to avoid or resolve them as they appear.
One possible challenge is a scarcity of experts that genuinely have extensive in-depth knowledge and fit the criteria and requirements of the job position. Then further, there is the challenge of miscommunication regarding salaries or financial expectations that would correspond to the volume and complexity of the obligations.
And of course, the recruitment process is costly by itself, so ideally, you’d need it to result in the best dev ‘ending up’ working for your company.
- ‘Bang for a buck’—JS is a fundamental programming language, and if the dev knows it, they probably also master other languages and technologies too.
- Creating sable web servers and apps
- Dynamically updated content
- Easy control of videos, images, and multimedia elements
- Emphasizing easily through animation
- Game creation and development
- Utilizing powerful frameworks—library of many structures for project particulars, with numerous features for quick and good quality development
- Fullstack development—both frontend and backend are written easily
- Simplicity of debugging and testing—identifying bugs quickly, codes are reviewed simple line by line
- Creating cross-platform mobile and web apps
- Excellent interfaces—creating captivating and visually gorgeous interfaces for the users, with drag and drop and more interesting and valuable features.
- Concurrency—running more tasks at the same time, handling different operations, thus saving time overall
Diamant sums up the beneficial aspects of JS as:
- Simplicity—Easy to learn and implement in the work
- Creation of excellent interfaces
- Open source projects access—the developer that needs to find assistance or guidance can easily do so
- Simple syntax
- Not depending on a platform
- Reduced server interactions
31.90 € hourly
32.90 € hourly