87 Best Front End Sencha Ext JS Java JSON Contractor Full Time Developers For Hire In September 2025

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selected:

Front End [ x ] Sencha Ext JS [ x ] Java [ x ] JSON [ x ] contractor [ x ] full time [ x ]

framework:

+ Next JS (86) + React JS (86) + Node JS (85) + Express JS (69) + jQuery (52) + Vue JS (37) + Angular JS (35) + Java Spring (22)

language:

+ TypeScript (81) + JavaScript (67) + Vanilla JS (65) + Python (60) + C# (26) + PHP (26) + C++ (24) + C (17)

utility:

+ Three JS (25) + Redux JS (17) + GraphQL JS (16) + Jest JS (10) + Chai JS (8) + Jenkins (7) + Webpack JS (7) + CLI (6) + bash (5)

ui:

+ CSS (47) + EJS (29) + Tailwind CSS (16) + bootstrap (14) + Pixi JS (9) + Lit JS (8) + SASS (8) + SCSS (5)

career:

+ Junior (50) + Mid Level (44) + Senior (36) + Manager (6) + CTO (5)

stack:

+ Full Stack (77) + Back End (59)

db:

+ MongoDB (70) + SQL (48) + MySQL (26) + Postgres (PostgreSQL) (21) + Firebase (7) + Redis (7)

server:

+ AWS (31) + docker (28) + Linux (15) + Google Cloud (11) + kubernetes (8)

program:

+ Git (69) + Jira (34) + GitHub (16) + Figma (10) + Postman (9) + VS Code (7) + Prisma (6) + IntelliJ (5)

concept:

+ HTML (44) + OOP (38) + software (33) + mobile app (25) + api (20)

speaking:

+ Spanish (14) + French (8) + Hindi (8) + Portuguese (8)

worker type:

+ freelance (64)

us state:

+ California (10) + Texas (6) + Florida (5)

country:

+ United States (49) + Canada (13) + Brazil (5)

country region:

+ North America (62) + Asia (8) + South America (7) + South Asia (5)

Filters:

selected:

Front End [ x ] Sencha Ext JS [ x ] Java [ x ] JSON [ x ] contractor [ x ] full time [ x ]

framework:

+ Next JS (86) + React JS (86) + Node JS (85) + Express JS (69) + jQuery (52) + Vue JS (37) + Angular JS (35) + Java Spring (22)

language:

+ TypeScript (81) + JavaScript (67) + Vanilla JS (65) + Python (60) + C# (26) + PHP (26) + C++ (24) + C (17)

utility:

+ Three JS (25) + Redux JS (17) + GraphQL JS (16) + Jest JS (10) + Chai JS (8) + Jenkins (7) + Webpack JS (7) + CLI (6) + bash (5)

ui:

+ CSS (47) + EJS (29) + Tailwind CSS (16) + bootstrap (14) + Pixi JS (9) + Lit JS (8) + SASS (8) + SCSS (5)

career:

+ Junior (50) + Mid Level (44) + Senior (36) + Manager (6) + CTO (5)

stack:

+ Full Stack (77) + Back End (59)

db:

+ MongoDB (70) + SQL (48) + MySQL (26) + Postgres (PostgreSQL) (21) + Firebase (7) + Redis (7)

server:

+ AWS (31) + docker (28) + Linux (15) + Google Cloud (11) + kubernetes (8)

program:

+ Git (69) + Jira (34) + GitHub (16) + Figma (10) + Postman (9) + VS Code (7) + Prisma (6) + IntelliJ (5)

concept:

+ HTML (44) + OOP (38) + software (33) + mobile app (25) + api (20)

speaking:

+ Spanish (14) + French (8) + Hindi (8) + Portuguese (8)

worker type:

+ freelance (64)

us state:

+ California (10) + Texas (6) + Florida (5)

country:

+ United States (49) + Canada (13) + Brazil (5)

country region:

+ North America (62) + Asia (8) + South America (7) + South Asia (5)

Timezone:

(includes +1/-1 hour)

Featured Front End Sencha Ext JS Java JSON Contractor Full Time Developers

1 to 20 of 87 devs ( view all 1674 devs )

Full Stack Developer| Technical Team Lead | Senior Full Stack Engineer

Verona, Wisconsin, US or remote

Summary -Over 8 years of IT Professional experience in all phases of software development life cycle to requirements gathering, analysis, design,...

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Senior Fullstack Web Application Engineer

Saint Paul, Minnesota, US or remote

Having worked with a variety of teams, from Best Buy to UHG to Dapper Labs, I have learned what makes for failure, friction, or success, both for the...

Front End Sencha Ext JS Java JSON contractor full time react node typescript vue

Software Engineer

Toronto, ON, Canada or remote

Computer science graduate with 8+ years of experience. I am looking to join to startup team with whom communication and teamwork are paramount. Have...

Front End Sencha Ext JS Java JSON contractor full time react node typescript angular

15+ Years Full Stack/Front End Web and Generalist Developer (JavaScript/Polyglot)

Chicago, Illinois, US or remote

Note: it is my full intention that nobody read all of this rambling foolishness about my career. It's best skimmed and maybe ultimately skipped to...

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Full Stack Developer

Austin, Texas, US or remote

Full Stack Software Developer – ML Infrastructure, Amazon Consultant - Lead Engineer, Contoro Robotics R&D Software Developer (C++), Spatial...

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Full Stack Web Development

Edmonton, Alberta, Canada or remote

I'm a seasoned Full-Stack Web Developer who's conquered projects across the globe. I've revamped business websites using React.js in Hong Kong,...

Front End Sencha Ext JS Java JSON contractor full time react node typescript angular

Web Developer

Jacksonville, Florida, US or remote

Blue Cross Blue Shield of Florida (2016 - 2020) - Led development on migration of application from Spring+JSP to Node+Express+React - Mentored...

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Full Stack Developer

Northport, Michigan, US or remote

DevConnect 🚀: DevConnect is a low cost crm designed to give developers control over their customer pipeline using custom built ui components and...

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Software Engineer

Highlands Ranch, Colorado, US or remote

Work Experience GUIDEcx — Software Engineer Feb 2022 - PRESENT - Responsible for building, testing, implementing and maintaining React...

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Experienced Senior Full Stack Developer | Front End Expert | Web Application Specialist

Richmond, British Columbia, Canada or remote

Proven Full Stack Developer/Front End Developer with over 8 years of hands-on experience in creating scalable, secure, and user-friendly web...

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Senior Full Stack Engineer

San Diego, California, US or remote

I've worked on multiple apps from scratch on-prem and cloud native, full-stack engineer with focus on front-end (about 60% to 70% front-end compared...

Front End Sencha Ext JS Java JSON contractor full time react typescript angular jquery

Senior Web Developer

Orlando, Florida, US or remote

Worked on several SaaS products in PHP, JavaScript, and TypeScript. Created custom SaaS Dashboard using the Yii PHP framework with a MySQL database....

Front End Sencha Ext JS Java JSON contractor full time react node typescript angular

Full Stack Software Engineer

Madison, Wisconsin, US or remote

GoodUnited (Sep 2022 - Present) - Lead engineer for donation page feature, adding 4% revenue stream and 10+ nonprofits. - Co-lead for...

Front End Sencha Ext JS Java JSON contractor full time react node typescript jquery

Frontend / Mobile Engineer

Teresina, Piauí, Brazil or remote

At Loft I was working at startup Nomah, and I'm involved in building three front-end applications. A website for lead and guest acquisition channel,...

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Staff Software Developer

Calgary, AB, Canada or remote

- Opensourcer from last 14 years, shepherding various projects. - Staff @Gusto, building gusto.com - Staff @AppDirect, building physical commerce....

Front End Sencha Ext JS Java JSON contractor full time react node typescript angular

Full Stack Software Engineer

Miami, Florida, US or remote

Juice Finance: • Led the development and test launch of both the omega.xyz landing page and the app.omega.xyz lending platform using Next.js,...

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Front End Developer

Pembroke Pines, Florida, US or remote

EXPERIENCE Project Manager/Lead Developer (September 2022 – Present) Silhouette Miami (Remote) Spearheading the development of a scalable,...

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Full-Stack Developer

Montevideo, Montevideo, Uruguay or remote

Uruguay-based Full-stack Web Developer and old-school JavaScript coder with 10+ years of experience. Able to work in multiple programming languages...

Front End Sencha Ext JS Java JSON contractor full time react node typescript vue

Developer | Frontend | Backend

Austin, Texas, US or remote

Fullstack developer. Bachelors degree in Computer Science in 2022 from The University of Texas at San Antonio. Hello! I'm Allef, I work with a lot...

Front End Sencha Ext JS Java JSON contractor full time react node typescript jquery

Software Engineer

Denver, Colorado, US or remote

- Software Engineer for Sleep Doctor. Crafted intricate web building tools and responsive interfaces using PHP, Symfony, JavaScript, HTML, and CSS,...

Front End Sencha Ext JS Java JSON contractor full time react node typescript angular