Hire JavaScript Developers

ScienceSoft offers development services by JavaScript engineers skilled in architecting and building large-scale web and mobile apps. In either a dedicated or augmented team, our developers leverage MEAN stack and other JavaScript frameworks to deliver dynamic frontends and sustainable back-ends.

Our Related JavaScript Services

If you find either of the offers below closer to what you’re searching for, click on the box to check out our dedicated page

React Native

Mobile JavaScript developers skilled in React Native

Check Our React Native Offer

Node.js

Full-stack and back-end JavaScript developers skilled in Node.js

Check Our Node.js Offer

Why Partner Up with ScienceSoft

Since 2002 in JavaScript development.
100+ JavaScript developers, 60+% Senior developers, 40% full-stack developers.
JavaScript developers have 6 years of experience on average.
Full-scale Project Management Office to manage dedicated teams.
Certified Scrum masters in-house.

Robust quality and data security management practices backed by ISO 9001 and ISO 27001 certificates.
Ready to start a project in 2–5 days.
HQ – McKinney, Texas. Offshore development centers in Europe. Representative offices in the UAE, EU, and Georgia (US state).

In early 2020, we hired ScienceSoft to help our team with front-end portal development focusing on SCSS and Angular 9. ScienceSoft’s team is highly skilled and extremely committed to providing excellent results. The cooperation ran very smoothly. We enjoyed our collaboration with ScienceSoft and won’t hesitate to recommend their front-end development expertise!

Vilnis Vitolins, owner, LTA Nams

Need JavaScript Talents for Your Project?

ScienceSoft’s experienced JavaScript developers are ready to help you deliver both the front-end and back-end of your web or mobile application. By partnering up with us, you can also leverage the skills of QA engineers, support experts, or other talents that your JavaScript project may need.

Discuss my Project

ScienceSoft’s Six-step Hiring Process

Thanks to its comprehensive 6-step hiring procedure, ScienceSoft welcomes only the most skilled and extremely productive engineers on board.

Careful CV scanning.
HR specialist's interview.
Test task 1 (soft skills).
PM's/Team Lead's interview.
Test task 2 (hard skills).
CTO's interview.

The competition for ScienceSoft JavaScript developer roles is always very high (50+ applicants per position) and we always take our time to hire only the most skilled candidates. This way, we guarantee that our engineers will deliver the level of services that represents ScienceSoft as a brand.

Skills that Drive Our JavaScript Development

JavaScript frameworks, platforms, and libraries

General

Node.js-specific

JavaScript-specific development tools

Mobile development frameworks

Clouds

Platforms

QA

DevOps

Application monitoring

Source control

You can also learn more about our approach to the development process – agile development steps, DevOps practices, modular architecture design, and more.

Sample Profile of Our Senior JavaScript Developer

Phil, Senior JavaScript Developer

Experience in JavaScript development: 7 years

Summary

Skilled in front-end architecture design and development of large and complex web solutions.

Major projects

Front-end development of an online collaboration platform for cybersecurity experts. Lead in a team of 15 developers.

Technologies: JavaScript (React.js, Redux), TypeScript, CSS3/HTML5, SASS/SCSS, Cytoscape, REST API, Jest.

Front-end architecture design and development of a web application for a furniture manufacturer and retailer. Senior in a team of 19 developers.

Technologies: JavaScript (React.js, Redux), MySQL, HTML, CSS, GIT, Jira.

Full-stack development and integration of an online marketplace for a CNC manufacturer. Senior in a team of 10 developers.

Technologies: JavaScript (React.js, Redux), TypeScript, HTML5, CSS3, Node.js, MongoDB, Stripe API, Jira.

Hard skills

Front-end and full-stack agile development of large web applications using React, Angular, Typescript, Vue.js, Ember.js, and Node.js.
Design and development of front-end architectures (MVC, SPA, PWA, micro-frontends, etc.)
Coding of UI components; knowledge of modern JavaScript design patterns.
Proficiency in SAAS and CSS; use of scalable and maintainable CSS architectures.
Ensuring cross-browser and cross-platform compatibility.
Knowledge of XML and XML-based standards.
Experience with relational (MySQL, Microsoft SQL Server) and NoSQL (MongoDB) databases.
Ability to quickly understand existing large codebases.
Unit testing and rigorous code review.

Soft skills

Flexible; adapts to new processes and requirements in under 3 days.
Clearly communicates ideas to teammates, PMs and product owners.
Cooperates with product owners during requirement verification.
Willing to lead and mentor juniors and/or new team members.
Eagerly contributes to discussions on front-end architecture design.
Bridges the gap between business needs and technical limitations.
Proactively polishes code, optimizes front-end performance to improve user experience.

Development methodologies and practices

Agile methodologies: Scrum, Kanban, XP.
DevOps.

Education

Bachelor of Science in Computer Science.

Request CVs for My JavaScript Project

How Our JavaScript Developers Ensure Code Quality

Coding best practices

Adherence to JavaScript coding guidelines and code quality tools (e.g. JSLint).
Adherence to data security practices.
Descriptive names for all variables and in-code comments.
Code and dependencies are documented.
Code is divided into short and focused units.
Use of frameworks’ APIs, third-party libraries, version control tools.
Ensured code portability.
Reasonable code standardization and automation.

Unit testing

Unit tests are a part of a functional requirements specification.
Focus on verifying code behavior in response to the input of standard, boundary, and incorrect values.
After each significant code change unit tests are rerun to ensure proper performance.

Code review practices

Ad hoc review.
Peer review.
Code walkthrough.
Code inspection.

Code quality metrics

Maintainability index (MI).
Cyclomatic Complexity (CC).
Depth of Inheritance.
Class Coupling.

Our Code Sample

Software Our JavaScript Developers Build

All types of software

Web apps (including PWAs and SPAs.)
Hybrid and cross-platform mobile apps.
Cloud applications.
XaaS/SaaS.
Custom APIs.

Of various complexity

Large and complex applications, requiring 50+ FTE teams.
Applications with multiple integrations.
MVPs.
Libraries.

For all groups of end users

Custom enterprise platforms and corporate apps.
Commercial software products (B2B, B2C, B2E).

The Financial Times Includes ScienceSoft USA Corporation in the List of the Americas’ Fastest-Growing Companies 2023

For the second year in a row, ScienceSoft USA Corporation ranks among 500 American companies with the highest revenue growth. This achievement is the result of our unfailing commitment to provide high-quality IT services and create best-value solutions that meet and even exceed our clients’ expectations.

Read a press release

Our Hallmark JavaScript Projects

Mobile Video Streaming Apps for a TV Industry Leader

5.5+ years of cooperation, ongoing evolution by 9 developers.
Multi-screen apps for online streaming used by 6 major US broadcasting companies.
A proprietary Backbone.js-based framework to enable fast and easy app updates via cloud..

Technologies: JavaScript, Backbone.js, jQuery, RequireJS, Underscore.js.

project details

Team Augmentation for Marketplace Development: Go, Angular, Swift, Kotlin

Development and support of a multi-vendor marketplace with 14 major product categories.
1+ year of cooperation.
Iterative Angular 10 front-end development and evolution to ensure high user experience.

Technologies: JavaScript, Angular, TypeScript, Golang, Go kit, Kubernetes.

project details

Redesign, Migration, and Modernization of a Corporate Training Web Portal

Team of 3 developers and 1 QA engineer working under the Scrum methodology.
Front-end modernization using the AJAX technology.
API integration testing and load testing to ensure stable performance.

Technologies: Angular 4, HTML, CSS, TypeScript, RxJS, AJAX, Selenium.

project details

Development and Continuous Evolution of a CMS Product – Enonic

Team of 5 developers and 1 QA specialist.
5+ years of cooperation.
Code refactoring from ExtJS to TypeScript to ensure dynamic nature of the CMS.

Technologies: JavaScript, TypeScript, HTML, CSS, ExtJS, Less.js.

project details

Development of an Azure-based Software Product for Business Process Automation

Highly dynamic SaaS software product with a custom monitoring module.
Agile (Scrum) development with the DevOps (Docker, CI/CD) approach and the proprietary IMAAT (Integrated Manual and Automated Testing) technique.

Technologies: Angular 10, TypeScript 3.9, MySQL, MobX, Jasmine, RxJS.

project details

AR Content Management System for a Digital Signage Solution

Team of a PM, 2 senior Node.js devs, a senior React dev, a middle React dev, and a QA engineer working according to Scrum for 6 months.
Custom web app for managing AR content & devices.
Integration with a Unity3D plugin.

Technologies: Node.js, FeathersJS, Amazon S3, MariaDB; React, Redux.

project details

See More JavaScript Projects

Opt for Fast and Quality Work on Your JS Project

Our JavaScript developers will provide professional assistance in:

Technology stack selection.
Design of front-end and back-end architectures.
Front-end and full-stack development.
Rigorous code review and unit testing.
Continuous support & maintenance and evolution of your software.
Software migration or its update to a newer version.

Talk my project needs

How to Hire JavaScript Developers from ScienceSoft

Initial Request

Details

You send us a request, specifying the number of JavaScript experts you need, their desired level of experience, as well as the model of cooperation you're interested in.

CV Scanning

Details

ScienceSoft performs preliminary scanning of our experts' CVs in the database and sends you the most relevant ones.

Interview Scheduling

Details

You choose the CVs you're most interested in and let us know the time you're available for interviewing candidates.

Interviews

Details

We help arrange the interviews with our JavaScript developers within 1-2 days.

SLA Preparation

Details

After you confirm the experts' competence, ScienceSoft works with you to compose a service level agreement (SLA).

Onboarding

Details

Once you sign, the experts (lead by ScienceSoft’s or your PM – you decide) immediately start working on your project.

How We Ensure Successful Cooperation

On-demand team adjustment

Whenever you request services of a dedicated JavaScript team or augment your existing team with our JavaScript experts for hire, ScienceSoft takes on responsibility to scale the teams up or down in just 1–2 days if required.

Transparency of progress and results

In case of a dedicated team cooperation model, we use such KPIs as cycle time, team velocity, and deployment frequency to make sure our JS developers always show the highest performance. We also give you access to our reporting tools, where you can track project progress and task completion.

Highly motivated employees

ScienceSoft takes care to motivate and provide professional growth possibilities for JavaScript developers to ensure their skills don’t get rusty. We regularly organize internal training sessions and encourage our developers to participate in tech conferences.

Hire JavaScript Developers: In-house vs. Outsourcing

Check the details

Building a solid team of 3-5 JavaScript developers can take up to 8-10 months, on average. By turning to a vendor, you get a team of this or larger size in a single week and launch your project faster.
Financial compensation for in-house employment includes payroll taxes. When you work with a vendor, you only make payments according to the T&M model by hourly rate, while the vendor handles taxes themselves.
When you hire JavaScript developers in-house, you have long-term legal obligations that you can’t easily abandon. In vendor outsourcing, you can put the cooperation on hold or cancel it with a 1-month notice.