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Want to hire D3.js developers on your own? Here are the skills you must look for while hiring a D3.js developer
Hiring D3.js developers might be an intricate task for you if you are a non-technical manager. D3.js is a popular library known for providing best features to create visualizations and manipulating data documents. D3 uses HTML, CSS, and SVG for designing user interactive visual representations and has in-built features for animations. But, hiring the most skilled D3.js developers among thousands of developers is challenging for anybody. So, here UltraGenius comes to assist you while recruiting the top D3.js developers on your own. UltraGenius understands your job requirements and gets you only the top D3.js developers who have in-depth knowledge of software development.
The following skills you must look for while hiring a D3.js developer –
- Variables and scoping
- Arrays and object
- Array methods
- Functions and arrow functions
- DOM Manipulation and event handler
- The “this” keyword
- The “class” keyword
- Prototype chain and object creation
- Higher order functions and callback functions
Well conversant with JS build tools
Excellent understanding of testing frameworks and tools
Test Framework is a set of libraries designed to verify that code satisfies the rules and requirements. If you are looking for D3.js developers, they need to know about Jest, Enzyme, Mocha, Chai, AVA and Tape for unit testing. For end-to-end testing there is Selenium, Webdriver, Cucumber JS, Nightwatch JS, Cypress, Puppeteer and Karma as well!
Experienced in working with Version Control System (VCS)
D3.js developers must have a good knowledge of version control systems, like Git, SVN and Mercurial. Developers mostly use Git for their work. It is the version control system that helps the team in collaborating and organizing your code, maintain frequent changes which may occur in it by checking out old codes and compares them with new updated ones given to you by pulling code from their repository or managing commit history as they can be independent while working on a project at this point.
Knowledge of front-end frameworks like Angular or React
Familiarity with at least one of the front-end frameworks like React.js or Angular.js is beneficial for any D3.js developer. D3.js developer works on the front-end to create beautiful animations and does statistical data analysis through bar graphs and pie charts. For creating rich and effective data visualizations in your Angular or React application, the developers use D3 library.
Implementing enter and exit selection
The D3.js developer is able to create new nodes for the input data and delete outgoing nodes that are no longer required. When an element is considered for selection, the pairing of each element in the data array is done with the corresponding node. If the number of nodes are less as compared to data, then the extra elements make the enter selection.
Experience with web markup and UI, UX Concepts
The D3.js developer must have a firm understanding of element positioning, displaying the elements, and making components interactive, semantic markup, and other related UX Concepts so they can design the product with the best quality. The developer must be experienced in developing visual effects in presentational markup. For, example – How the heading appears, making text larger and putting weight to it, and giving which color to it, and which markup can include captions, bind columns, and row headings to table cells.
Knowledge of W3C DOM API and W3CSelectors API
The D3.js developer must know how to modify documents using W3C DOM APIs. D3 also has a declarative approach to operate on random set of nodes known as selection. W3C Selectors API define the Selectors that are supported by the web browsers natively. D3 also provides direct access to the underlying nodes.
Proficient in writing optimized and readable code
The D3.js developer must have a strong problem solving skill as it helps developers to utilize existing solutions for the projects more efficiently, thinking abstractly, and enables them to write pseudocode for their project. The developer must know how to debug the code as well. Also, check if the D3.js developer is able to write clean and concise code and can fluently communicate with other team members while explaining the code.
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Connect with the top 1% D3.js developers of the world at the lowest price
D3.js is widely used for creating animations and manipulating data driven documents to the Document Object Model (DOM). A D3.js developer does the job of designing and maintaining the user interface components. But recruiting the top talented D3.js developers is not an easy task when a large no. of developers are competing to grab the job opportunities.
Top Interview Questions to ask while hiring a D3.js developer
Frequently Asked Questions
UltraGenius is one of the leading platforms for hiring remote talent and connecting freelance and part-time developers with Silicon Valley businesses. We focus on finding the best talents who will perform extremely well and will be easily integrated into your teams. We filter out only the top 1% most skilled freelance developers among the 20K+ developers who have applied on our platform. Candidates have to prove their self-reported experience by giving UltraGenius’ s skill tests.
UltraGenius first tests the developer’s skill set by conducting a two and half hour hiring test. Our hiring test judges a candidate on all aspects like aptitude, case study analysis, verbal and reasoning, coding questions based on data structures and algorithms, software engineering, system design, and more. Then, there is another round for the candidates who are selected from this round called “Higher-level Assessment Skill Test”, which is a video round that deeply analyzes developers’ major skills and asks questions about the projects they have worked upon.
Fill up the form which is on every hiring developers’ page and we will inform you once we select the top 1% D3.js developers matching your job requirements. After analyzing the candidates based on their resumes and two assessment tests, we provide you the feedback quickly. And if the developers selected by our team are fit for your job role, then we also provide the onboarding.
UltraGenius offers you only the most skilled developers who are top 1% among the 20K+ developers who have applied on our platform. After a rigorous selection and testing process, we sort out only the top candidates for you. You can check out UltraGenius’ s selection process for hiring D3 developers on https://www.ultragenius.club/hire-d3-freelancer/.