JavaScript
Development
Services

Expert JavaScript development that grows your business. We build custom applications from scratch and provide vetted senior developers to scale your existing teams, whichever your business needs right now.

How we can help

As a JavaScript development company, Freshcode helps businesses solve their technology challenges with custom solutions that deliver measurable results.

Solutions
01

Application development

Scale faster without breaking things. Transform slow web pages into lightning-fast, responsive websites that handle rapid growth. Modernizing legacy systems? Building from scratch? Our custom JavaScript development services deliver feature-rich, scalable applications that reduce bounce rates and increase conversions through smooth user experiences across all web browsers.

02

Dedicated team composition

Get the team you need without the hiring headaches, in days. We provide a complete team of vetted senior JavaScript developers who become invested in your success from day one. Start with a risk-free trial period to ensure the perfect fit.

Do you need to scale up for a product launch or scale down after release? We adapt to your roadmap and budget. Plus, when you hire one developer, you gain access to our entire community of JavaScript experts with hundreds of years of combined experience supporting your project.

03

Performance optimization

Stop losing customers to slow performance. Legacy systems holding you back? Even experienced teams can benefit from fresh perspectives. Hire JavaScript developers who will provide detailed analysis and optimization recommendations for existing JavaScript applications, identifying bottlenecks that cost you users.

We modernize outdated codebases and integrate AI capabilities that increase user engagement, unlock new revenue streams, and create automation opportunities

04

Technical leadership & mentorship

Make technology decisions with confidence. As your technology partner, we offer strategic software development guidance adapted to your specific business needs—from architecture that supports rapid scaling to AI integration strategies that deliver ROI. Our development team provides mentorship that helps you avoid costly mistakes and make technology decisions that support long-term growth.

Found required solution?

Let's discuss opportunities!

Our JavaScript
development services

Expertise

From building new web and mobile apps to modernizing legacy systems, we provide comprehensive JavaScript development services that address your specific business challenges. Here's how we help companies leverage JS technology:

Web app development

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Build fast, responsive web applications that work seamlessly across all browsers and devices. We offer full-stack development of advanced web applications, including progressive web apps (PWAs), single-page applications (SPAs), and complex multi-page platforms using React, Vue.js and modern JavaScript frameworks.

Mobile app development

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Build fast, responsive web applications that work seamlessly across all browsers and devices. We offer full-stack development of advanced web applications, including progressive web apps (PWAs), single-page applications (SPAs), and complex multi-page platforms using React, Vue.js and modern JavaScript frameworks.

Migration & modernization

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Build fast, responsive web applications that work seamlessly across all browsers and devices. We offer full-stack development of advanced web applications, including progressive web apps (PWAs), single-page applications (SPAs), and complex multi-page platforms using React, Vue.js and modern JavaScript frameworks.

API & third-party integration

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Build fast, responsive web applications that work seamlessly across all browsers and devices. We offer full-stack development of advanced web applications, including progressive web apps (PWAs), single-page applications (SPAs), and complex multi-page platforms using React, Vue.js and modern JavaScript frameworks.

Support & maintenance

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Build fast, responsive web applications that work seamlessly across all browsers and devices. We offer full-stack development of advanced web applications, including progressive web apps (PWAs), single-page applications (SPAs), and complex multi-page platforms using React, Vue.js and modern JavaScript frameworks.

Expertise

Ready to build your team? Tell us about your project and we'll match you with the right engineers.

Why Choose Freshcode
for JavaScript Development?

Proven track record

Since 2014, we have provided custom JavaScript development services, resulting in over 100 completed projects.

Rigorous vetting process

Every developer undergoes 5+ hours of technical evaluation, including in-depth GitHub analysis, practical problem-solving sessions and cultural fit assessment.

Predictable, fast onboarding

Get experienced JavaScript developers fully integrated into your team in 2-3 weeks with clear timelines and smooth handoffs.

Flexible scaling

Daily/weekly progress reports, clear documentation, and direct access to development teams

Industry expertise

You own 100% of your custom JavaScript application and all source code

Quality assurance

You own 100% of your custom JavaScript application and all source code

Transparent communication

Daily/weekly progress reports, clear documentation and direct access to JavaScript development teams.

Intellectual property protection

You own 100% of your custom JS application and all source code.

Let's discuss your idea!
Get a free consultation.

Discuss opportunities

Industries We Serve

Flexibility

We respect the unique challenges, regulations, and user expectations specific to your industry within the broader tech ecosystem. From compliance requirements to domain-specific workflows, we've built JavaScript solutions and scalable web apps that drive real business impact.

HealthTech

Telemedicine

Lab informatics

Patient portals

We build HIPAA-compliant JavaScript platforms that enhance patient outcomes and streamline healthcare delivery. We understand the critical importance of data security, regulatory compliance and user trust in healthcare technology. Our JavaScript solutions handle sensitive health data while delivering fast, responsive user experiences that enhance user satisfaction for both medical professionals and patients. Learn more.

FinTech

Digital wallets

Secure payment

Telemedicine

Financial technology demands precision, security, and scalability, and our JS applications deliver all three. From payment processing platforms handling millions in transactions to subscription management and recurring billing systems, our code meets stringent security standards while providing the real-time responsiveness financial applications require. Learn more.

EdTech

LMS

AI assistants

Analytics

Transform learning experiences with JavaScript applications. We've built eLearning platforms, educational social networks, and interactive content delivery systems using modern JavaScript frameworks. Whether it's gamification, adaptive learning, or collaborative tools, we create education technology that's intuitive and scales to thousands of concurrent users. Learn more.

Logistics & Supply Chain

Inventory

Warehousing

Order management

Optimize operations with JavaScript solutions built to tackle real-world logistics challenges. From street asset management applications to logistics intelligence platforms with route optimization and real-time tracking, we build systems that increase efficiency and reduce costs. Our applications handle complex data processing and provide the real-time updates that logistics operations depend on.

Real Estate & PropTech

Rental

Billing

Tenant portals

Modernize property management and real estate transactions with dedicated software developers experienced in the space. We've built rental management platforms, HMO (House in Multiple Occupation) SaaS solutions, and property search engines that handle complex listing data and user matching.

Expertise

Testimonials

Very easy to communicate with. Flexible to work together with our in-house team and do things in a way that suits our needs. We have seen 20% monthly growth in our customer-base since the first deliverables from Freshcode. We are now the only platform in our category able to deliver a HIPAA-compliant Telehealth solution.

Heiko Scherer

Nikolaj Hendriksen

Founder & CEO at Hi Rasmus

United States, Telehealth

Partnering with Freshcode has been a game-changer for Tradomatic. Our mutual efforts resulted in a modernized PWA platform that resolved our previous technical challenges and established a new communication channel with the grain trading market.

Yuriy Havrylyuk

Yuriy Havrylyuk

Co-owner/Director at Tradomatic

Ukraine, Agritech

The app developed by Freshcode implemented all of my requirements. It's a business ready to go. The finished app allows our small team to manage large data volumes which is crucial at the early stages of the company's development. The team fulfilled all tasks in time.

TruEnergy

Daniel Cohen

CEO at TruEnergy

United Kingdom, Utilities

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Our customer stories

In our clients' success we trust.

Our JavaScript
Development Stack

We want our clients to keep up with the ever-evolving tech world via JavaScript services matching their business goals.

Front end

Vue.js

Nuxt.js, Element UI, Chakra UI, Muse-UI, HeyUI, Element3, Bootstrap Vue, PrimeVue, Vuetify, Quasar, Element, Buefy

Typescript

TsLint, Deno, TypeDoc, Zod

React

Redux, MobX, Material UI, Fluent UI, Riot, React Router, Gatsby, Razzle, Next.js, Blitz.js, Aleph.js,

Back end

Runtime Environments

Node.js, TypeScript, Nest.js

Cloud Services

AWS Lambda, Google Cloud Functions

Frameworks

Express, Koa, Fastify

Database integration

NoSQL

MongoDB, ElasticSearch, Firestore, Redis, Kafka

SQL

Oracle, MySQL, PostgreSQL

ORM frameworks

TypeORM, Sequelize, Mongoose, Bit

API
integrations

Payment Systems

Apple Pay, Google Pay, PayPal, Stripe, Global Payments

CRM Integration

Zendesk, Salesforce, Zoho, LiquidPlanner

Cloud Platforms

AWS, Azure, Google Cloud

Social Media Platform

Instagram, Facebook, LinkedIn APIs

Video & Communication

YouTube, Wistia, Vidyard integration

Artificial Intelligence

Chat GPT, Claude, Gemini, Midjourney

What did we do with AI?

AI Integration
01

Edutech

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Integrated AI-powered creative tools into an educational platform for Danish students, including text-to-image generation, background removal, and inpainting capabilities. Our implementation addressed data privacy regulations by ensuring student data remains within the country.

02

Social

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Developed an AI-powered social aggregation platform that analyzes public sentiment on topics and makes predictions alongside human users. The system scrapes relevant online opinions and generates prediction distributions, creating a powerful collective intelligence tool.

03

Insurance

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Built an intelligent system that streamlines insurance case registration and approval. The AI analyzes policy documents, extracts relevant information, and assists managers in formulating responses, complete with reasoning, formatting, and CRM integration.

04

Corporate AI

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Successfully deployed a local instance of a Large Language Model for corporate use, enabling secure document processing, knowledge management, and intelligent automation while keeping sensitive data within the organization's control.

What are the next steps?

Discovery Phase

Let's Run a Discovery Phase for Your JavaScript Project

01

Initial Research & Understanding

We review your existing documentation, meet with key stakeholders, and establish clear communication channels to gain a comprehensive understanding of your business context and project goals.

02

Business Requirements Capture

Through structured workshops, we identify your user types, document key business challenges, and capture the specific requirements that will drive the success of your solution.

03

Solution Framework Development

We analyze and prioritize your requirements, develop system architecture recommendations, and create functional specifications aligned with your business objectives.

04

Validation & Finalization

We review all findings with your stakeholders, incorporate feedback, and finalize comprehensive documentation that guides the entire development process.

Our insights

Questions and Answers

How much does it cost to build a web app with JavaScript?

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The cost of JavaScript project development depends on many factors, including development platform, complexity and requirements, features and functionality, testing, and many more. Contact us to know the cost estimation.

Is JavaScript free to use?

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JavaScript is free to use, moreover, it's supported by such giants as Facebook, Gmail, Twitter, who actually built their own JS frameworks. Today they are used by thousands of devs for building their applications.

How Freshcode can help in the development of a Javascript project?

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We've been a JavaScript development company since our founding, and today we gained valuable experience. Our team of JS developers builds highly interactive web, mobile, and cross-platform apps related to different industries, including MedTech, Real Estate, eCommerce, Energy & Utilities, Media & Entertainment, and more. We can build your app from scratch, improve, test or support an existing one, or prepare a discovery phase for deep planning your future JS-based product.

What kind of projects is Javascript best suited for?

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From e-commerce platforms and real-time data applications to on-demand apps like food delivery and taxi booking systems are some of the great examples where such JS benefits as extensive databases and fast page load are highly required. A number of the world's leading digital platforms, including Paypal, Netflix, LinkedIn, and Uber are using JavaScript.

What are the benefits of outsourcing a JavaScript development team in Ukraine?

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Here are some major benefits of outsourcing dedicated JS dev team in Ukraine:

~ JS skill diversity and state-of-the-art technologies
~ Favorable cost
~ Comfortable environment for collaboration: convenient time-zone and high-level English
~ Variety of companies with JS stack and a vibrant JS community

More information about Ukrainian outsourcing companies you can find in this article.

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you fill this form?
We review your inquiry and respond within 24 hours
A 30-minute discovery call is scheduled with you
We address your requirements and manage the paperwork
You receive a tailored budget and timeline estimation
javascript

Talk to our expert

Anastasia Kovtun

Anastasia Kovtun

JavaScript Partnerships

With JavaScript, we turn business challenges into cutting-edge solutions. We build JS applications that our partners love.

We review your inquiry and respond within 24 hours

A 30-minute discovery call is scheduled with you

We address your requirements and manage the paperwork

You receive a tailored budget and timeline estimation

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