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Angular developers use this typescript-based, open-source JS framework for building UI interfaces. Angular (without JS) is the 2nd version of AngularJS (Angular 1.0 version) which was written by Misko Hevery and Adam Abrons. Angular was introduced to the entire world in 2016 while AngularJS launched in 2010.
There have been 15 versions of Angular so far. Angular 15, the latest version, was released in November 2022. Some core features of Angular are:
- MVC Structure: MVC stands for Model View Controller. It’s an architectural pattern dividing an application into three components. Model indicates the data users work with. View shows the User Interface like buttons, dropdown, input fields, etc. that users interact with. Controller works as an interface between View and Model to handle all the business-related logic.
- Dependency Injection: Angular provides a built-in feature to pass dependencies across the components. This helps the developers to easily manage dependencies between components and services.
- Two-way data binding: It allows for automatic synchronization of data between the model (i.e., the data) and the view (i.e., the template or user interface).
- Directives: Angular provides a set of directives that can be used to manipulate the DOM (Document Object Model) and add logic and behavior to the templates. For eg. ngIf and ngFor. Custom directives can also be created to add custom functionality.
- Routing: Angular provides a powerful routing system that allows you to define different URLs for different parts of your application, making it easy to create single-page applications.
- Pipes: It help in transforming data before displaying it in the view.
Following factors to look out for while you hire Angular developers:
- Experience with Angular, JavaScript and Typescript
- Familiarity with commonly used Angular libraries and frameworks
- Strong problem-solving skills
- Ability to write clean and maintainable code
- Experience with version control systems such as Git, building and deploying web applications
- Knowledge of performance optimization techniques
- The candidate should have good communication skills as they will be working in a team and need to be able to explain their work to others.
- If full stack is a requirement, full stack Angular developers typically use the MEAN stack, where Angular is used as the front-end UI framework rather than React.
Each experience level requires different skills, expertise, knowledge, coding practices, etc.
The experience levels of entry-level, intermediate, and senior can be defined as follows:
- An entry-level Angular developer typically has some experience with JavaScript and web development, but limited experience with AngularJS specifically. They may be able to build basic single-page applications using AngularJS, but may not be familiar with more advanced features such as custom directives or services. A company should expect an entry-level developer to need guidance and support to become proficient in AngularJS.
- An intermediate Angular developer will have a solid understanding of AngularJS and can build complex single-page applications using the framework. They have a good understanding of how to use directives, services, and dependency injection, and may have experience with unit testing and performance optimization. They should be able to work independently and troubleshoot common issues.
- A senior Angular developer is an expert in AngularJS and has a deep understanding of the framework and its capabilities. They have experience building large, complex applications and have a good idea of optimizing performances and maintainability. They are able to work independently, and can mentor and guide other developers. They are also experienced in working with other frameworks and technologies.
An interview process for Angular developers should typically include a combination of technical and behavioral questions to assess the candidate's skills and experience. The specific format may vary depending on the company and role, but here are some examples of what the process could look like:
- Initial screening: This could involve a phone or video call with a member of the hiring team to discuss the candidate's background and experience, and determine if they are a good fit for the role.
- Technical assessment: This could include a coding challenge, a take-home test, or a live coding session to assess the candidate's technical skills and knowledge of Angular and related technologies.
- Technical interview: This could involve a face-to-face or video call interview with one or more members of the technical team to discuss the candidate's experience and skills, and ask technical questions related to Angular and related technologies.
- Behavioral interview: This could involve a face-to-face or video call interview with one or more members of the hiring team to discuss the candidate's experience and skills in a broader context, and ask questions about their communication and teamwork skills, problem-solving abilities, and experience working in a professional development environment.
- Reference checks: This could involve speaking with previous managers or colleagues of the candidate to get a better understanding of their work ethic, performance, and ability to work in a team.
- Decision: After the interview process is completed, the hiring team will evaluate the candidate's qualifications and decide if they are a good fit for the role.
It's also important to note that the process may vary depending on the role and tech stacks and take into consideration the candidate's skills, experience, and potential to grow in the role, rather than just their current knowledge.
We are looking for a talented Angular developer to be a part of our team. The successful candidate will have a strong understanding of Angular, JavaScript, and web development principles, and will be responsible for building and maintaining web applications using Angular.
Responsibilities:
- Develop and maintain web applications using Angular
- Write clean, maintainable, and efficient code
- Collaborate with the design team to implement pixel-perfect UIs
- Troubleshoot and debug issues as needed
- Stay up-to-date with new Angular features and technologies
- Participate in code reviews and provide constructive feedbacks to optimize codes
- Work closely with designers, product managers, and other developers to deliver high-quality, innovative solutions
Qualifications:
- Experience with Angular, JavaScript and Typescript
- Knowledge of web development principles, testing frameworks and practices
- Familiarity with commonly used Angular libraries and frameworks
- Ability to sync well in a team and communicate suitably
- Strong problem-solving skills
- Ability to write clean and maintainable code
- Experience with version control systems such as Git, building and deploying web applications
- Knowledge of performance optimization techniques
Question 1: Can you explain how two-way data binding works in Angular and give an example of how you have used it in a project
A great answer would be that two-way data binding, in Angular, is a pre-built feature that enables synchronization of data between the view and the model. Essentially, when the model changes, the view updates automatically, and when the view changes, the model updates automatically.
For example, a form that needed to display and update data from the backend. You can use two-way data binding to bind the form fields to the model, so that when the user updated the fields, the model would automatically update, and when the backend returned new data, the form fields would automatically update. Bonus would be to add validation to the form, and therefore two-way data binding makes it easy to show and hide error messages based on the state of the form.
An okay answer would show the basic knowledge without the detail, such as understanding that with two-way data binding you can change something in the view and it updates the model, and when you change something in the model, it updates the view. This developer might need more guidance on the details and best practices of implementing two-way data binding in Angular, as well as on how to use it effectively in a project.
Question 2: Can you explain the difference between a component and a directive in Angular?
A great answer would be that a component in Angular is a class that controls a portion of the DOM through a template. It has a defined lifecycle and can receive input through properties and output events.
A directive is a way to manipulate the DOM directly by attaching behavior to elements. It does not have a template or a defined lifecycle. An example of a component would be a form with input fields and a submit button, while an example of a directive would be a directive that highlights an element on hover.
A good answer would be a component is a class that controls a portion of the screen, called a view. It typically includes an HTML template that defines the layout and content of the view, while Directive is a class that gives additional behavior to an already-existing element or component. It may be applied to provide components with more functionality. This developer may need support in understanding the details of the component and directive.
Question 3: Can you show an example of how to create a custom directive in Angular?
In this example, we're importing the Directive, ElementRef, and HostListener decorators from the @angular/core module. Then creating a MakeUppercaseDirective class that has a constructor that takes in an ElementRef and a HostListener that listens to the 'input' event and updates the element's value to uppercase.
To use this directive, we simply need to add the appMakeUppercase selector to an input element in the template.
A good answer might be able to describe the concept without knowing the code. This developer may need support in understanding how to create custom directive and how to use Directive, ElementRef, HostListener decorators.
Question 4: Can you show an example of how to create a form in Angular with two-way data binding and validation?
In this example, the form is defined using a formGroup directive, which binds the form to a formData object in the component's class. The form fields are defined using formControlName directives, which bind the fields to properties of the formData object. Two-way data binding is achieved using the [(ngModel)] directive, which binds the field's value to a property of the component's class (in this case, the user object).
Validation is implemented using the required attribute on the input fields, and error messages are displayed using *ngIf directives that check the invalid and touched properties of the corresponding formControl objects. The submit button gets disabled if the form becomes invalid.
You will need to import the ReactiveFormsModule in the module where you are trying to use the above code snippet and also create a formGroup in the component class.
In the above example, formGroup is created in the component class and used to create form controls with validation rules.
An OK Angular developer might be able to code the basic case, but might be stuck in explaining the usage of [(ngModel)] and how to handle the validation case.
Question 5: Can you explain how dependency injection works in Angular?
Dependency injection in Angular is a mechanism where a component's dependencies are provided to it at runtime. This allows for loose coupling of components and makes it easy to substitute different implementations of a dependency.
Angular uses a hierarchical injector system where a component can request dependencies from its parent injector or from the root injector. Dependencies are defined using providers, which can be registered at different levels of the application, such as at the component level, the module level, or the root level. An example of dependency injection in Angular would be injecting the HttpClient service into a component to make an HTTP request.
The best way to evaluate whether a developer is a great match is by working with them. That's why we make it as easy as possible to get started. If a developer isn't working out within the first two weeks of your engagement, we'll work with you to find a better match and won't bill you for the original developer. It's a no-risk way for you to get the help you need even faster.
Developers in the Torc community set their own rates. The three primary factors that determine the cost of a Remix developer are:
- Experience - Everyone would prefer a senior developer but, let's be honest, 10+ years of experience isn't always required. If you consider the work the developer will be doing and the amount of support within your existing team they'll have access to, you might be better served with one or two junior Remix developers over one senior developer.
- Skill mix - Marketplaces operate under normal supply and demand dynamics. Developer rates often increase with more niche, complex, or in-demand skill requirements.
- Geography - While remote work has flattened the geographic pay disparity to some degree, where your developer lives does factor into their cost. In 2022, the median rate for Torc developers in Latin America was 29% lower than developers in the U.S., Canada, and Western Europe, while the median rates in Eastern Europe and Asia/Oceania were 24% and 40% lower, respectively.
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Once the job is finalized, our AI matching algorithm and team of technical talent specialists will get to work identifying great candidates from the Torc community. You can review their profiles and assessments, interview shortlisted candidates, and hire the perfect developer - all in under a week.
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