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
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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
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
Practice
13 years
Workforce
100+
ScienceSoft leverages code reusability Angular is notable for to create large-scale apps. We chose Angular for a banking app with 3M+ users.
Workforce
80+
ScienceSoft achieves 20–50% faster React development and 50–90% fewer front-end performance issues due to smart implementation of reusable components and strict adherence to coding best practices.
By using a lightweight Vue framework, ScienceSoft creates high-performant apps with real-time rendering.
Mobile development frameworks
Practice
8 years
Projects
300+
ScienceSoft reduces up to 50% of project costs and time by creating cross-platform apps that run smoothly on web, Android and iOS.
Platforms
Practice
14 years
Projects
25+
Workforce
10+
A certified Microsoft partner, ScienceSoft creates CRM and ERP solutions powered by Dynamics 365 and optimizes most effectively a range of business operations.
Projects
10+
ScienceSoft achieves at least 20% increase in sales and 30% improvement in case resolution with well-thought-out and business-tailored Salesforce solutions.
Practice
15 years
Projects
100+
Workforce
20+
Solid expertise in SharePoint services has earned ScienceSoft a place in Clutch’s list of Top SharePoint Developers in 2023.
Practice
12 years
A certified ServiceNow partner, ScienceSoft offers a proprietary 4-level implementation model that helps deliver the best value from ServiceNow adoption.
You can also learn more about our approach to the development process – agile development steps, DevOps practices, modular architecture design, and more.

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.
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.

How to Hire JavaScript Developers from ScienceSoft
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.
JavaScript team augmentation
Leverage the experience of ScienceSoft’s JavaScript developer(s) to handle skill deficiency or bridge staff gaps in your project.
Dedicated JavaScript team
Entrust your JavaScript project or its part to a team of skilled JavaScript talents managed by ScienceSoft’s Team Lead/PM.
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