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Freelance Ext JS 4 developers - Levan K.
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Levan K.

Vetted Ext JS 4 developer in Georgia (UTC+4)

Ex-Meta, Tiktok, [Booking.com](http://booking.com/) full stack software engineer with more than a decade of experience building applications from zero to one using React, NodeJS, HTTP REST API, React, PostgreSQL, Mongo and more. CHECKOUT levanlevi.com I have developed end-to-end solutions and have proficiency in back-end, micro services, Docker, Redis, MySQL, Postgres, Mongo, AWS, No-SQL, OOP, SOLID and front-end, HTTP, ReactJS, JavaScript, TypeScript, NextJS, Spring Boot and more.

Freelance Ext JS 4 developers - Nathan O.
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Nathan O.

Vetted Ext JS 4 developer in the United States (UTC-4)

I'm a veteran software engineer with almost two decades of professional experience. I'm skilled in PHP, Python, Golang, and Javascript. I have a passion for solving problems through code and am always excited to learn new skills. I'm looking for an opportunity that allows me to focus on what I do best!

Freelance Ext JS 4 developers - Anurag G.
Anurag G.

Ext JS 4 developer in India (UTC+6)

Experienced Software Engineer with 8+ years of expertise in building and optimizing scalable systems, specializing in machine learning-driven platforms, backend services, and full-stack development. My work includes developing AI-powered platforms, RAG models, and micro-frontend and microservices architectures that boosted system efficiency by 40%. I've led projects involving intelligent agents to optimize performance and streamline operations, reducing bottlenecks by 25%. I thrive on solving tough problems with cutting-edge technology and delivering exceptional user experiences.

Freelance Ext JS 4 developers - Steve P.
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Steve P.

Vetted Ext JS 4 developer in the United States (UTC-7)

Hi there! **I'm Steve, an award-winning software developer** and **creative problem-solver.** As someone who has been **programming for 16 years**, I have extensive startup and freelance experience which I am excited to leverage to make great things happen -- _fast_. I am built to rapidly craft high-quality, **user-centric software that is beautiful** inside and out. I've done a ton of **Python** (15 years), **JavaScript** (7 years), and concurrent **Go** programming (14 years) on the backend, plus many years of **React** (7 years) and **Svelte** (5 years) on the frontend. Lately I've been creating **RAG-enabled AI chat bots** that answer questions about an arbitrary data set (e.g., company documents or instructional videos). In my personal time I've been learning Kotlin Multiplatform and Arduino, and writing a compiler in RISC-V assembly. Thanks to LLMs -- specifically Claude 3.5 Sonnet, GPT-4o, GPT o1-preview, and GPT-4 before that -- my programming productivity has approximately doubled, meaning **I get $300 worth of programming done per hour, at the highest quality**; I do in 1 hour what mid-level devs need 5+ hours to do, _and_ their code is buggier. Additionally, I am accustomed to playing the role of startup CTO, and I'm looking to do more work as a fractional CTO. This is especially valuable for projects that need software built _and_ **need help clarifying** which approaches, technologies, and services should be used to solve a problem in the most efficient way. In 2022 I was brought into a project after the founder read about me in a book. Together with her team, **the software I designed and led the development of has won many international innovation awards** -- so many that this founder was nominated for Person of the Year in 2023, in her home country of Switzerland. I was **recently vetted** by Arc and **I completed their "30-minute" programming exercise in 4 minutes**. My solution was so simple that the interviewer had to triple-check that it was correct. (It was.) I am not usually available, but I am today. _(Note: For these first 2 weeks of January 2025, I am reducing my rate to $75/hour. After that, it will go back up to $150.)_ **Let's do this!**

Ext JS 4 developers developer - Steve P.'s portfolio image
Freelance Ext JS 4 developers - Brandon W.
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Brandon W.

Vetted Ext JS 4 developer in the United States (UTC-7)

A Full Stack developer who has a passion for programming and can contribute his knowledge of full stack web technologies towards providing technical solutions, building web applications, and increasing information security to ensure overall satisfaction of the company and it's customers.

Freelance Ext JS 4 developers - Shashikant S.
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Shashikant S.

Vetted Ext JS 4 developer in the United States (UTC-8)

Customer-focused technical leader with 18+ years of experience in team leadership, organizational strategy, development roadmaps, and delivering innovative products while managing risks. Skilled in leading design and development efforts, prioritizing optimal solutions and timely deliveries. Versatile in transitioning between roles such as Solution Architect, Application Architect, Enterprise Architect, Product Manager, Project Manager, Principal Engineer, and People Manager. Language agnostic developer at heart (primarily working in C#, C++, Java), balancing big-picture vision with detail-oriented analysis and agile processes, managing complex projects in SaaS, B2B, and B2C environments. I am also an AWS Certified Solution Architect. My professional journey includes roles at Oracle, LegalZoom, Microsoft, Varian, and PayPal, where I contributed significantly to enterprise-level projects. Additionally, I have developed system/OS-level applications and software during my tenure at Microsoft, PalmSource, Xerox, and Verizon. Leadership Skills 10+ years in managing teams of up to 12-members as a Technical Manager/Engineering Lead/Principal Engineer. Path finder with participative/servant leadership style, persistent learner and ability to manage all aspects of Software Development; innovation driven, persistent and skilled in navigating complexities/risks

Freelance Ext JS 4 developers - Daniel W.
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Daniel W.

Vetted Ext JS 4 developer in the United States (UTC-5)

Senior Software Engineer with 6 years of experience in designing, developing, and implementing complex software solutions. Expert in a variety of advanced programming languages and frameworks, with a proven track record of delivering high-quality, on-time, and within-budget code. Adept at mentoring engineers, addressing technical challenges, and driving innovation to align with business objectives. Recognized for exceptional communication skills and collaborative approach, with a talent for translating requirements into scalable, client-focused solutions. Experienced in full-stack development and serving as a primary Subject Matter Expert (SME) for critical applications. Committed to staying ahead of emerging technologies and industry best practices.

Freelance Ext JS 4 developers - Brian B.
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Brian B.

Vetted Ext JS 4 developer in the United States (UTC-7)

FULL STACK ENGINEER with 24 years of global experience spanning a full range of both software and hardware engineering, validation and technical marketing across multiple platforms and environments. * Experienced in programming the full stack from HTML5 / CSS, through JavaScript / Jquery, to PHP and mySQL. * Experienced in programming scripted, compiled, and object-oriented languages in both the Windows and Linux environments. * Experienced in analyzing and defining complex processes and requirements, creating functional specifications, and documenting product features and design collateral to expedite launch of cutting edge, revenue-generating products. * Proficient with both technical concepts and customer/consumer priorities; skilled in driving promotional initiatives influencing high-level decision makers.

Freelance Ext JS 4 developers - Adam M.
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Adam M.

Vetted Ext JS 4 developer in the United States (UTC-4)

I'm a computer science instructor and programmer with over 15 years of experience. For most of my career, I’ve worked as a full-stack web developer, but I have also done some desktop, embedded, and game development. I have worked for many different organizations with a wide variance of methodologies and software stacks. This breadth of exposure has inoculated me against dogmatic perspectives. I am immune to hype and I prefer to adopt new technology when it is mature and proven, not new and shiny. I believe that a software craftsman should take a conservative, balanced, and pragmatic approach to software development. I can help you at the beginning stages of a project: capturing requirements and choosing a solution stack. When I am the software architect, I favor a backend running on ASP.NET Core, a SQL Server data store, and a frontend written using React. C# is my static language of choice and Typescript is my preferred dynamic language. I tend to bias to leaner solution stacks rather than aggregating too many frameworks and libraries that lead to dependency hell. I take a balanced perspective on automated testing and design patterns: Test-driven Development, Behavior-driven Development, Software Design Patterns, and Enterprise Architecture Patterns are important tools that can speed up development and increase quality when used appropriately, but can slow development and provide a false sense of security when used inappropriately. I appreciate the revolutionary benefits of Agile Development methodologies, but I also firmly believe that a software product needs vision and forethought. I’m very happy to offer up my own recommendations, but I’m also a compliant team member. I can join a project that’s already in active development, onboard with your tech and development methodologies, and start cranking out features within the first week. If your project is further along, I can help you refactor a proof-of-concept prototype with lots of technical debt into a resilient software product, able to respond to stakeholders with improvements and new features. I'm looking forward to learning about your organization and your software development needs. I would like to help you realize your project's full potential!

Discover more freelance Ext JS 4 developers today

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Why clients hire Ext JS 4 developers with Arc

Without Arc by my side, I would be wasting a lot of time looking for and vetting talent. I'm not having to start a new talent search from scratch. Instead, I’m able to leverage the talent pool that Arc has created.
Mitchum Owen
Mitchum Owen
President of Milo Digital
The process of filling our position took less than a week and they found us a superstar. They've had the flexibility to meet our specific needs every step of the way and their customer service has been top-notch since day one.
Matt Gysel
Matt Gysel
Finance & Strategy at BaseVenture
The biggest advantage and benefit of working with Arc is the tremendous reduction in time spent sourcing quality candidates. We’re able to identify the talent in a matter of days.
Philip Tsai
Philip Tsai
Director of Engineering at Chegg

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FAQs

Why hire an Ext JS 4 developer?

In today’s world, most companies have code-based needs that require developers to help build and maintain. For instance, if your business has a website or an app, you’ll need to keep it updated to ensure you continue to provide positive user experiences. At times, you may even need to revamp your website or app. This is where hiring a developer becomes crucial.

Depending on the stage and scale of your product and services, you may need to hire an Ext JS 4 developer, multiple engineers, or even a full remote developer team to help keep your business running. If you’re a startup or a company running a website, your product will likely grow out of its original skeletal structure. Hiring full-time remote Ext JS 4 developers can help keep your website up-to-date.

How do I hire Ext JS 4 developers?

To hire an Ext JS 4 developer, you need to go through a hiring process of defining your needs, posting a job description, screening resumes, conducting interviews, testing candidates’ skills, checking references, and making an offer.

Arc offers three services to help you hire Ext JS 4 developers effectively and efficiently. Hire full-time Ext JS 4 developers from a vetted candidates pool, with new options every two weeks, and pay through prepaid packages or per hire. Alternatively, hire the top 2.3% of expert freelance Ext JS 4 developers in 72 hours, with weekly payments.

If you’re not ready to commit to the paid plans, our free job posting service is for you. By posting your job on Arc, you can reach up to 450,000 developers around the world. With that said, the free plan will not give you access to pre-vetted Ext JS 4 developers.

Furthermore, we’ve partnered with compliance and payroll platforms Deel and Remote to make paperwork and hiring across borders easier. This way, you can focus on finding the right Ext JS 4 developers for your company, and let Arc handle the logistics.

Where do I hire the best remote Ext JS 4 developers?

There are two types of platforms you can hire Ext JS 4 developers from: general and niche marketplaces. General platforms like Upwork, Fiverr, and Gigster offer a variety of non-vetted talents unlimited to developers. While you can find Ext JS 4 developers on general platforms, top tech talents generally avoid general marketplaces in order to escape bidding wars.

If you’re looking to hire the best remote Ext JS 4 developers, consider niche platforms like Arc that naturally attract and carefully vet their Ext JS 4 developers for hire. This way, you’ll save time and related hiring costs by only interviewing the most suitable remote Ext JS 4 developers.

Some factors to consider when you hire Ext JS 4 developers include the platform’s specialty, developer’s geographical location, and the service’s customer support. Depending on your hiring budget, you may also want to compare the pricing and fee structure.

Make sure to list out all of the important factors when you compare and decide on which remote developer job board and platform to use to find Ext JS 4 developers for hire.

How do I write an Ext JS 4 developer job description?

Writing a good Ext JS 4 developer job description is crucial in helping you hire Ext JS 4 developers that your company needs. A job description’s key elements include a clear job title, a brief company overview, a summary of the role, the required duties and responsibilities, and necessary and preferred experience. To attract top talent, it's also helpful to list other perks and benefits, such as flexible hours and health coverage.

Crafting a compelling job title is critical as it's the first thing that job seekers see. It should offer enough information to grab their attention and include details on the seniority level, type, and area or sub-field of the position.

Your company description should succinctly outline what makes your company unique to compete with other potential employers. The role summary for your remote Ext JS 4 developer should be concise and read like an elevator pitch for the position, while the duties and responsibilities should be outlined using bullet points that cover daily activities, tech stacks, tools, and processes used.

For a comprehensive guide on how to write an attractive job description to help you hire Ext JS 4 developers, read our Software Engineer Job Description Guide & Templates.

What skills should I look for in an Ext JS 4 developer?

The top five technical skills Ext JS 4 developers should possess include proficiency in programming languages, understanding data structures and algorithms, experience with databases, familiarity with version control systems, and knowledge of software testing and debugging.

Meanwhile, the top five soft skills are communication, problem-solving, time management, attention to detail, and adaptability. Effective communication is essential for coordinating with clients and team members, while problem-solving skills enable Ext JS 4 developers to analyze issues and come up with effective solutions. Time management skills are important to ensure projects are completed on schedule, while attention to detail helps to catch and correct issues before they become bigger problems. Finally, adaptability is crucial for Ext JS 4 developers to keep up with evolving technology and requirements.

What kinds of Ext JS 4 developers are available for hire through Arc?

You can find a variety of Ext JS 4 developers for hire on Arc! At Arc, you can hire on a freelance, full-time, part-time, or contract-to-hire basis. For freelance Ext JS 4 developers, Arc matches you with the right senior developer in roughly 72 hours. As for full-time remote Ext JS 4 developers for hire, you can expect to make a successful hire in 14 days. To extend a freelance engagement to a full-time hire, a contract-to-hire fee will apply.

In addition to a variety of engagement types, Arc also offers a wide range of developers located in different geographical locations, such as Latin America and Eastern Europe. Depending on your needs, Arc offers a global network of skilled software engineers in various different time zones and countries for you to choose from.

Lastly, our remote-ready Ext JS 4 developers for hire are all mid-level and senior-level professionals. They are ready to start coding straight away, anytime, anywhere.

Why is Arc the best choice for hiring Ext JS 4 developers?

Arc is trusted by hundreds of startups and tech companies around the world, and we’ve matched thousands of skilled Ext JS 4 developers with both freelance and full-time jobs. We’ve successfully helped Silicon Valley startups and larger tech companies like Spotify and Automattic hire Ext JS 4 developers.

Every Ext JS 4 developer for hire in our network goes through a vetting process to verify their communication abilities, remote work readiness, and technical skills. Additionally, HireAI, our GPT-4-powered AI recruiter, enables you to get instant candidate matches without searching and screening.

Not only can you expect to find the most qualified Ext JS 4 developer on Arc, but you can also count on your account manager and the support team to make each hire a success. Enjoy a streamlined hiring experience with Arc, where we provide you with the developer you need, and take care of the logistics so you don’t need to.

How does Arc vet a Ext JS 4 developer's skills?

Arc has a rigorous and transparent vetting process for all types of developers. To become a vetted Ext JS 4 developer for hire on Arc, developers must pass a profile screening, complete a behavioral interview, and pass a technical interview or pair programming.

While Arc has a strict vetting process for its verified Ext JS 4 developers, if you’re using Arc’s free job posting plan, you will only have access to non-vetted developers. If you’re using Arc to hire Ext JS 4 developers, you can rest assured that all remote Ext JS 4 developers have been thoroughly vetted for the high-caliber communication and technical skills you need in a successful hire.

How long does it take to find Ext JS 4 developers on Arc?

Arc pre-screens all of our remote Ext JS 4 developers before we present them to you. As such, all the remote Ext JS 4 developers you see on your Arc dashboard are interview-ready candidates who make up the top 2% of applicants who pass our technical and communication assessment. You can expect the interview process to happen within days of posting your jobs to 450,000 candidates. You can also expect to hire a freelance Ext JS 4 developer in 72 hours, or find a full-time Ext JS 4 developer that fits your company’s needs in 14 days.

Here’s a quote from Philip, the Director of Engineering at Chegg:

“The biggest advantage and benefit of working with Arc is the tremendous reduction in time spent sourcing quality candidates. We’re able to identify the talent in a matter of days.”

Find out more about how Arc successfully helped our partners in hiring remote Ext JS 4 developers.

How much does a freelance Ext JS 4 developer charge per hour?

Depending on the freelance developer job board you use, freelance remote Ext JS 4 developers' hourly rates can vary drastically. For instance, if you're looking on general marketplaces like Upwork and Fiverr, you can find Ext JS 4 developers for hire at as low as $10 per hour. However, high-quality freelance developers often avoid general freelance platforms like Fiverr to avoid the bidding wars.

When you hire Ext JS 4 developers through Arc, they typically charge between $60-100+/hour (USD). To get a better understanding of contract costs, check out our freelance developer rate explorer.

How much does it cost to hire a full time Ext JS 4 developer?

According to the U.S. Bureau of Labor Statistics, the medium annual wage for software developers in the U.S. was $120,730 in May 2021. What this amounts to is around $70-100 per hour. Note that this does not include the direct cost of hiring, which totals to about $4000 per new recruit, according to Glassdoor.

Your remote Ext JS 4 developer’s annual salary may differ dramatically depending on their years of experience, related technical skills, education, and country of residence. For instance, if the developer is located in Eastern Europe or Latin America, the hourly rate for developers will be around $75-95 per hour.

For more frequently asked questions on hiring Ext JS 4 developers, check out our FAQs page.

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