Hire the Top 3% of Freelance Twitter Bootstrap Developers
Toptal is a marketplace for top Twitter Bootstrap developers, engineers, programmers, coders, architects, and consultants. Top companies and startups choose Toptal Twitter Bootstrap freelancers for their mission-critical software projects.
United StatesToptal Member Since February 24, 2017
Aitizaz is a full-stack engineer with expertise in Ruby on Rails and Java. He is keenly interested in algorithm-level efficiency and has experience working both with front-end and back-end technologies as well as frameworks. Aitizaz is also a competitive programmer who actively participates in different online challenges. He loves learning about anything, especially if it make him better at his craft.
Milana is a self-taught WordPress/PHP engineer. She started learning PHP in 2008, WordPress in 2009—and has been working as a freelance WordPress theme developer since 2010. She's been a full-stack engineer since 2011 and a full-time WordPress theme developer and project lead since March of 2015.
David is an open-source and open-data enthusiast with more than 23 years of experience as a professional developer. He has acquired various skills, including web programming (PHP and JavaScript), C, C++ (under Linux and Windows), and systems management. Of these skills, David specializes in web programming and has full-stack experience with Symfony PHP-based back ends, jQuery front ends, and WordPress/WooCommerce-based sites.
Piotr is an experienced full-stack software engineer and IT consultant, who understands client perspectives, and turns ideas into high-quality products. He has expertise in both enterprise and startup environments. Having worked for corporations, banks, and software houses, Piotr has developed products used worldwide and helped startups and internal corporate systems using a variety of tech stacks.
PiwEL is a senior full-stack web developer who easily adapts to any technology required for clients' projects. He thoroughly understands the requirements for web applications and provides the best infrastructures to allow for safe and fast growth and scaling. He has experience working in-house for large companies and as a consultant for a variety of organizations. He communicates well, prefers Agile methods, and has worked in teams of all sizes.
Ken is a full-stack Python developer who has broad experience in different IT roles, including mission-critical operations. He enjoys challenges, algorithms, and distributed systems, and follows a university education in data science and artificial intelligence. Ken cherishes knowledge, responsibility, and integrity, and brings these qualities to all his jobs.
Michal is a software engineer who pays attention to details, creates solutions while keeping the design in mind, and approaches it with a get-it-done-right attitude. He thoroughly understands the software development lifecycle and strives for code reusability and testability. Michal worked in an international environment with demanding schedules and changing business requirements and acted as a project leader while providing onsite support.
Max is a seasoned full-stack developer with a background in data science. With extensive experience in Ruby on Rails, he has spent the last few years primarily working in Python-based environments. Max collaborated with large teams on back-end solutions for sizable software systems and designed and implemented complete tech stacks for early-stage startups from the ground up. His diverse skill set makes him an incredibly versatile engineer.
Bootstrap developers are experts in building responsive, mobile-first web applications. This guide to hiring Bootstrap developers lays out best practices to help you identify and hire the best candidates for your company.
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Working with Marcin is a joy. He is competent, professional, flexible, and extremely quick to understand what is required and how to implement it.
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POSTIFY
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Kognosi
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Ronin Play Pty Ltd
Working with Toptal has been a great experience. Prior to using them, I had spent quite some time interviewing other freelancers and wasn't finding what I needed. After engaging with Toptal, they matched me up with the perfect developer in a matter of days. The developer I'm working with not only delivers quality code, but he also makes suggestions on things that I hadn't thought of. It's clear to me that Amaury knows what he is doing. Highly recommended!
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Bulavard, Inc.
As a Toptal qualified front-end developer, I also run my own consulting practice. When clients come to me for help filling key roles on their team, Toptal is the only place I feel comfortable recommending. Toptal's entire candidate pool is the best of the best. Toptal is the best value for money I've found in nearly half a decade of professional online work.
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Langlotz Patent & Trademark Works, Inc.
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Mxit
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nifti.com
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A Bootstrap developer leverages the Bootstrap front-end framework to build engaging, responsive, and user-friendly websites and mobile applications. Their primary responsibilities typically include creating user interfaces, adding interactivity, and implementing responsive designs that adapt to different screen sizes. They expertly implement Bootstrap’s grid system, classes, and components to create applications that are inherently adaptable and reliable, and that deliver visually appealing UI across the spectrum of screen sizes and devices.
Here’s a closer look at some of the key responsibilities of a Bootstrap developer:
User Interfaces – A Bootstrap engineer uses the predesigned components provided by the framework to create intuitive and aesthetically pleasing user interfaces that align with the project’s overall design goals.
Interactivity – The developer expertly implements Bootstrap’s JavaScript components to add interactivity to web pages.
Responsive Design – An expert in Bootstrap utilizes the framework’s grid system and responsive classes to ensure that your website or application looks good and functions well on all devices—from smartphones to desktop computers.
Feature Work and Debugging – A Bootstrap developer spends time coding new features, debugging and fixing issues, and customizing components to fit specific design needs. These tasks require that they stay current with the latest updates and best practices related to the Bootstrap framework.
How much does it cost to hire a Bootstrap developer?
If you are thinking of hiring a Bootstrap developer for your business, it’s important to understand the associated costs, which vary greatly depending on the project, its locale, and the level of Bootstrap expertise you seek.
ZipRecruiter states that the average salary for a Bootstrap developer in the United States is $129,846, as of September 7, 2023. Considering the expense of hiring a Bootstrap developer, it is important to factor in the value of getting a well-designed, responsive, and user-friendly website and/or mobile application that can significantly enhance user engagement and satisfaction. (A compelling case can even be made for the potential new revenue such an enhanced site could generate.)
For basic website development, a junior Bootstrap developer is less expensive to hire. Take into account, however, the possibility that they may take longer to complete a project than a more senior developer.
For a more tailored solution that fits your specific needs, you will require some custom website development and thus a more experienced developer—or even a team of developers. Such a project typically involves writing complex functionality or implementing unique design requirements that go beyond the capabilities of the basic Bootstrap components. The cost of a developer who can deliver such premium features would be correspondingly higher.
The highest level of expertise goes hand in hand with the highest cost, of course. A senior development expert can lead or execute the most elaborate, intricate, or sizable projects. They can integrate the Bootstrap front end with a back-end system, create complex user interfaces, or implement advanced features.
As with any investment, it’s crucial to evaluate and consider the potential return before making a hiring decision.
How quick is the hiring process with Toptal?
Typically, you can hire a Bootstrap developer with Toptal in about 48 hours. Our talent matchers are experts in the same fields they’re matching in—they’re not recruiters or HR reps. They’ll work with you to understand your goals, technical needs, and team dynamics, and match you with ideal candidates from our vetted global talent network.
Once you select your Bootstrap developer, you’ll have a no-risk trial period to ensure they’re the perfect fit. Our matching process has a 98% trial-to-hire rate, so you can rest assured that you’re getting the best fit every time.
Gustavo is a startup founder and web developer with more than 17 years of experience who specializes in JavaScript and UI/UX design. He has worked with Bootstrap since its inception and—years before the existence of Zoom and Google Hangouts—single-handedly created a video collaboration service used in more than 110 countries.
Web development is thriving. The US Bureau of Labor Statistics expects the field will grow 16% from 2022 to 2032, projecting about 34,700 job openings per year. Bootstrap (formerly Twitter Bootstrap) is a leading front-end framework that makes it easier to create the responsive, mobile-first websites that are in demand.
Bootstrap plays a pivotal role in enhancing user experience and engagement for enterprise-level clients, and is implemented in popular websites, including Apple Maps Connect, Forbes India, and Reuters. Since many businesses use Bootstrap, it is understandably challenging for companies to hire Bootstrap experts in such a competitive market.
This hiring guide details how to attract, assess, and retain a Bootstrap developer. We provide you with a comprehensive understanding of what to look for in a Bootstrap expert, suggest interview questions, and note the best practices for assessing potential candidates.
What attributes distinguish quality Bootstrap Developers from others?
A quality Bootstrap developer stands apart from other front-end developers by virtue of their deep understanding of the Bootstrap framework, which enables them to build responsive web applications quickly and efficiently.
The front-end framework has undergone several major revisions, each of which introduced significant changes. An expert who is familiar with these changes and can work effectively with different versions of Bootstrap is highly valuable.
With a strong understanding of core web technologies such as HTML, CSS, and JavaScript, these professionals are skilled in more than just the Bootstrap framework. They can deliver an improved user experience since they are knowledgeable about design patterns and conversant in the design process. They make a company’s digital platforms visually consistent and appealing by building or applying these elements:
A quality Bootstrap developer is well versed in the framework’s grid system. They understand how to design layouts that provide a first-rate user experience across varied screen sizes. They will not only ensure that a website or application resizes according to the screen, but also that the user experience is optimal across all devices.
Mobile-first Approach
A strong Bootstrap developer recognizes that Bootstrap’s mobile-first approach—in which applications are designed for mobile devices first and then scaled for larger screens—aligns with the increasing prominence of mobile browsing. A Bootstrap expert ensures that mobile use is a primary consideration in design and development, not an afterthought.
Design Patterns and the Design Process
An expert Bootstrap developer effectively collaborates with designers, understanding their language and translating design into functional code. They customize existing Bootstrap components to align with the design vision.
Predesigned Components
A quality Bootstrap developer delivers a superb user experience by implementing the framework’s predesigned components.
Consistent and Professional UI/UX
An expert developer applies Bootstrap’s clean and modern aesthetic to ensure a consistent look and feel across the application, enhancing users’ perceptions of and interactions with the company’s brand.
Optimal Performance
A Bootstrap expert includes only the necessary Bootstrap components, avoiding unnecessary bloat, increasing an app’s efficiency and expediency, and keeping load times brief.
Accessibility
A skilled Bootstrap developer prioritizes accessibility throughout the development process, enhancing Bootstrap’s components by implementing custom accessibility requirements. They apply semantic HTML and ARIA attributes, follow guidelines for color contrast and keyboard interactions, and test with assistive technologies. They stay updated on best practices, collaborate with designers, and create inclusive enterprise websites.
Complementary Technology Skills for the Bootstrap Expert
These skills enable the quality developer to best leverage the Bootstrap framework:
HTML and CSS
Because Bootstrap offers an extensive collection of CSS styles, components, and templates, it is essential that a Bootstrap expert be proficient in HTML and CSS. Understanding nuances such as specificity and cascading helps the quality Bootstrap developer write custom CSS to override the program’s default styles or add styling.
JavaScript
A Bootstrap expert leverages the JavaScript event model effectively to add custom interactivity and features like JavaScript code that responds to user actions and triggers specific behaviors in Bootstrap components.
Version Control
A Bootstrap developer uses a version control system such as Git to manage code. They track changes, collaborate with other developers and teams, resolve merge conflicts, and revert to previous versions of code, as necessary.
Testing
Robust testing practices ensure the quality and reliability of Bootstrap websites and apps. A quality developer writes unit, integration, and end-to-end tests to verify the quality of their code. They are familiar with testing frameworks such as Jest or Mocha, and have experience with tools like Selenium for browser-based testing.
Deployment
A Bootstrap expert deploys websites and apps to production environments. They are proficient in the principles of continuous integration/continuous deployment (CI/CD), effectively utilize content delivery networks (CDNs), and configure and manage web servers for seamless deployment and efficient hosting.
How can you identify the ideal Bootstrap Developer for you?
You will know what to look for in a Bootstrap developer only after delineating your project’s requirements. To nail these down, you must first identify the problem you wish to solve, and the skills gap you need to fill in order to solve that problem.
What Bootstrap development expertise level should you target?
Evaluate and determine the level of expertise necessary to fulfill your project’s needs. Consider its complexity, budget, and timeline. Are you looking to build a responsive website from scratch? Are you optimizing an existing site for better mobile performance? Do you need to customize the Bootstrap framework extensively to match a unique design, or will standard components suffice? How much money and time do you have to make this happen?
The answers to these questions will identify the appropriate level of Bootstrap developer expertise for your project:
Bootstrap Developer Level
Description
Junior
These developers have elementary experience or are newer to using Bootstrap. They can handle basic tasks, such as implementing Bootstrap components, building simple responsive layouts, and adding basic customizations to Bootstrap styles.
If your project is straightforward or on a tight budget, and if you will be providing guidance and helpful resources, hiring a junior developer is a good, cost-effective option.
Mid-level
These professionals have more experience and possess a deeper understanding of the Bootstrap framework. Mid-level developers are capable of performing more complex tasks, such as the extensive customization of Bootstrap, optimizing for performance, and building complex, responsive designs.
A mid-level developer is a good choice if your project involves a moderate level of complexity and aligns well with Bootstrap’s standard application scenarios.
Senior
These experts are highly experienced and have a thorough understanding of the Bootstrap framework. They can handle any project, lead a team, make architectural decisions, and resolve challenging problems. They are adept at creating responsive designs, optimizing for performance, and customizing Bootstrap extensively.
If your project requires extensive customization, has a large scope, or is on a tight schedule, hiring a senior developer expert in Bootstrap is ideal. The higher cost of a senior developer is offset by the efficiency and expediency they bring to a project. A senior developer is best positioned to deliver a high-quality outcome within the specified timeline.
How to Write a Bootstrap Developer Job Description for Your Project
An effective job description features a fitting title. Support your company’s hiring process by composing a job title to accurately reflect the role’s responsibilities and level of expertise. When possible, work into the title an indication of whether the role is best suited for a junior, mid-level, or senior developer. Possibilities may include:
Senior Bootstrap developer.
Junior front-end developer with Bootstrap experience.
Senior web developer (Bootstrap).
UX/UI developer with Bootstrap proficiency (mid-level).
Detail and delineate your project, and name and describe the related and complementary skills you seek. For example:
HTML and CSS proficiency – A developer should have a solid understanding of HTML and CSS for effective utilization of Bootstrap components and customization.
JavaScript expertise – A developer should have proficiency in JavaScript to enhance the interactivity and functionality of mobile applications within Bootstrap.
Responsive design knowledge – A developer should have an understanding of responsive design principles to create adaptable interfaces for various devices using Bootstrap’s grid system.
To set developers’ expectations regarding working remotely, be sure to describe your company’s policy regarding telecommuting. You can also incorporate such details into a job title (by labeling the role as on-site, hybrid, or remote).
What are the most important Bootstrap Developer interview questions?
Asking effective interview questions enables your assessment of an applicant by eliciting responses that reveal their depth of knowledge beyond simply characterizing Bootstrap. For starters, explore applicants’ technical competencies, problem-solving abilities, communication skills, and how they work within a team.
Below is a sampling of questions and model answers to help you identify the ideal Bootstrap developer for your project.
Start with technical questions to ensure candidates have a grasp of the basics:
Can you explain how the Bootstrap grid system works?
Bootstrap’s grid system is a flexible, mobile-first layout system designed for building responsive websites. It utilizes a 12-column grid structure and classes like .col-, .col-sm-, and .col-md- to control layouts for different screen sizes.
By dividing a webpage into rows and columns, responsive layouts can be effortlessly crafted to adapt to varying device or screen dimensions. The grid system follows a mobile-first approach, with default styles targeting smaller screens.
Additional classes can be used to adjust the layout as the screen size increases. With features like column offsetting, nesting, and responsive column reordering, the Bootstrap grid system provides the flexibility to create complex and responsive layouts to suit specific design needs.
How would you customize Bootstrap’s default styles?
There is more than one way to customize Bootstrap. For instance, developers may override styles using custom CSS. Alternatively, they can modify variables using Sass (a CSS preprocessor) or Bootstrap’s built-in theming options.
What is your experience with different versions of Bootstrap, and how do you handle migration between versions?
The applicant should share their perspective as it pertains to their unique experiences in:
Collaborating with team members to ensure a smooth transition to a newer version of Bootstrap.
Identifying significant changes between Bootstrap versions. This process can include examining the official release notes and migration guides, which detail new features, modifications, and deprecated elements.
When migrating—for example, from Bootstrap 4 to 5—the applicant must update the Bootstrap reference in their project, and adapt the code to comply with the framework’s changes. This may include updating Flexbox grid classes, then thoroughly testing the application. Additional strategies might include hands-on experimentation and code comparison through version control systems or online tools like GitHub, all to ensure that the transition between versions is smooth and leverages the latest features of the framework.
Next, assess a candidate’s problem-solving and teamwork abilities:
Can you describe a challenging problem you faced while working with Bootstrap—and how you solved it?
A prospective candidate’s answer should demonstrate their abilities to:
Troubleshoot issues.
Be persistent.
Think creatively or outside the box.
How do you ensure effective communication when working with designers or other members of the development team?
Strategies for clear communication include regular meetings, clear documentation, and use of collaboration tools.
Candidates should also emphasize their understanding of the design process, and delineate the benefits that result from working closely with designers. These include:
Promoting cohesive aesthetics.
Ensuring user-centric designs.
Streamlining development tasks.
Fostering effective communication for rapid prototyping and iterative improvements.
Finally, you may ask more advanced role-specific questions to see how the candidate’s experience aligns with your project goals:
How would you test Bootstrap code to ensure it works across various devices and browsers?
The developer should share experiences that speak to their:
Familiarity with testing practices, which should include both manual testing across various browsers and devices and automated testing. They may use tools like Selenium for traditional methods, along with more modern tools like Cypress and TestCafe.
Use of various testing tools and techniques. They may employ a blend of platforms such as BrowserStack and LambdaTest for comprehensive cross-browser testing, as well as Chrome’s built-in DevTools for responsive testing.
Can you explain your process for deploying a Bootstrap website or app?
The developer should share their experience with the deployment process:
Setting up a CI/CD pipeline – Tools like GitHub Actions and GitLab CI/CD are popular solutions for managing continuous integration and continuous deployment, offering seamless integration with code repositories.
Using a version control system – A developer can, for example, manage code with Git, hosted on platforms like GitHub or Bitbucket, to track changes and collaborate.
Deploying to a CDN or a web server – For deployment, Vercel and AWS Amplify are gaining traction for their simplicity and scalability. These platforms offer one-click deployment options directly from a Git repository.
Optimizing and monitoring app health – For optimization, Lighthouse provides in-depth performance insights. For monitoring, Datadog and Sentry are popular choices, offering real-time analytics and error tracking.
Why do companies hire Bootstrap Developers?
The multifaceted skill set of a Bootstrap expert is essential for businesses aiming to have a strong digital presence in today’s online world. A Bootstrap developer creates responsive and modern websites and mobile applications using the Bootstrap front-end framework. As Bootstrap is open source and widely adopted, a business can be assured that its project and developers are supported by Bootstrap’s large community of engineers who work continuously to deliver improvements and enhancements.
A Bootstrap expert is skilled in more than just the Bootstrap framework. They have a strong understanding of core web technologies, as well as complementary technologies, design patterns, and the design process. As such, they ensure that a company’s digital platform is visually appealing and consistent. Hiring an adept Bootstrap developer is an investment in producing high-quality, responsive, and aesthetically pleasing websites and mobile applications.
The technical content presented in this article was reviewed by Vasilis Kortsimelidis.
