Front-End Developer (Vanilla JavaScript)

IceWarpPraha, Praha, Hlavní město, Czechia

Hybrid Contract

Clicking Apply Now takes you to AutoApply where you can tailor your resume and apply.

Experience Level

Experience

Qualifications

What We Seek:Proven experience with vanilla JavaScript. Basic knowledge of PHP (ability to read code is sufficient). Hands-on experience with Froala or similar rich text editors. Strong understanding of HTML5, CSS3, and responsive design principles. Experience in browser debugging and performance optimization. Capacity to write clean, maintainable, and well-documented code. Familiarity with GIT version control. Able to work independently while being a team player. This position is specifically for candidates located near Prague, as we operate on a hybrid model requiring 3 days a week in the office. Proficient in Czech and English (B2 level).

About the job

Your Role:

You will be part of our dynamic team focused on enhancing the Web Client, which serves as the pivotal web interface for email, chat, and collaboration.
Your primary responsibility will be to leverage vanilla JavaScript to develop new features, refine the user interface, and optimize performance for an exceptional user experience.
Collaboration is key; you'll work closely with UX/UI designers, backend developers, and QA engineers to ensure our product is fast, reliable, and enjoyable for users.

About IceWarp

IceWarp is at the forefront of communication technology, providing robust solutions that cater to individual and organizational needs for effective collaboration and communication. Our commitment to innovation and excellence is evident in our user-centric approach and the quality of our products.

Similar jobs

Browse all companies, explore by city & role, or SEO search pages. View directory listings: all jobs, search results, location & role pages.

1 - 20 of 143 Jobs

Search for .NET Developer

143 results

Select all on this page (20)

Apply

Middle+ Unity Developer for Poker Game Development

jobgether

Full-time|On-site|Czechia

jobgether is hiring a Middle+ Unity Developer to focus on poker game development. This position is based in Czechia and centers on creating interactive poker experiences using Unity. Role overview The developer will work closely with designers and other engineers to build and refine poker game features. The goal is to deliver smooth, engaging gameplay and a …

Apr 29, 2026

Apply

Middle/Senior C# Developer

Veeam Software

Full-time|On-site|Prague, Czechia

Veeam Software seeks a Middle/Senior C# Developer to join the team in Prague, Czechia. This position centers on developing and maintaining applications that help customers manage and protect their data. Key responsibilities Design and build high-performance software using C# Maintain and improve existing applications Work closely with team members to deliver dependable solutions Share ideas and technical knowledge on ongoing projects Requirements Proven experience in C# development Understanding of software design principles and maintenance Interest in addressing challenges in data management and protection This Prague-based role offers the chance to collaborate with experienced colleagues and contribute to products used by customers around the world.

Apr 27, 2026

Apply

Kotlin/Java Developer Position

2ntelekomunikaceas

Full-time|On-site|Prague

2ntelekomunikaceas seeks a Kotlin/Java Developer to join the team in Prague. This role centers on building and improving applications that support the company’s products. What you will do Write software using Kotlin and Java Contribute to applications that enhance and expand the product lineup Collaborate with colleagues to solve technical challenges and deliver dependable solutions Requirements Hands-on experience with Kotlin and Java Interest in developing scalable software Ability to work effectively with others toward shared objectives This position offers the chance to build reliable software as part of a collaborative team at 2ntelekomunikaceas.

Apr 27, 2026

Apply

Agent Platform Developer

Purple Technology

Full-time|On-site|Brno

We are seeking a talented Agent Platform Developer to join our innovative team at Purple Technology. In this role, you will be responsible for developing and maintaining our agent platform, ensuring it meets the needs of our clients and enhances user experience. If you have a passion for technology and a desire to work in a dynamic environment, we want to hear from you!

Apr 8, 2026

Apply

PHP Backend Developer

vilgain

Contract|Remote|Remote job

Role overview Vilgain is seeking a PHP Backend Developer to help build and enhance internal tools that support Supply Chain, Manufacturing, and New Product Development teams. This fully remote position centers on developing solutions that keep business operations running smoothly and efficiently. What you will do Develop and maintain internal tools to improve business workflows. Integrate systems including ERP, e-commerce, logistics, and other key business platforms. Work with APIs, including designing and maintaining GraphQL APIs across multiple platforms. Identify and resolve performance issues to ensure stable, efficient systems. Collaborate with backend and frontend developers to keep tools working seamlessly together. Design new features and participate in system architecture decisions. Tech stack PHP (Nette framework) GraphQL MySQL and PostgreSQL Docker AWS Git The team primarily uses PhpStorm and Docker for daily development tasks. Location This role is remote.

Apr 28, 2026

Apply

Senior Software Developer - Remote Opportunity

Propellerhead

Full-time|Remote|Prague

Join our dynamic team based in Auckland, New Zealand, as a Senior Software Developer! We're on the lookout for passionate individuals eager to learn and evolve with us as we transition to a Rust code base.We invite applications from talented professionals worldwide seeking remote opportunities or those considering relocating to Auckland, New Zealand. While this position is primarily remote, if you're interested in moving, please check our 'Move to New Zealand' listings.Though most of our team operates within the New Zealand timezone, we welcome candidates from different time zones. We only require minimal overlap with our NZ-based team for daily stand-ups, typically held at the start of the NZ workday (9.00am NZT). The exact overlap hours will be discussed further during the recruitment process.Your Role:As a Senior Software Developer, you will collaborate with our core delivery team to design and implement innovative systems that go beyond standard feature development. You'll work alongside highly skilled peers who value software craftsmanship and autonomy.Our environment fosters technical excellence, curiosity, and forward-thinking design. We're seeking an individual excited about emerging technologies and eager to make a significant impact on how people interact with digital systems.We pride ourselves on a culture built on trust, continuous learning, and meaningful impact. Join a team that prioritizes integrity over ego, and clarity over complexity.If you're ready to tackle real-world problems with tangible outcomes and help shape the future of our technology, we would love to hear from you!

Dec 17, 2024

Apply

UI Developer at bloomreach | Czechia

bloomreach

Full-time|On-site|Czechia

Join bloomreach as a talented UI Developer, where you'll have the opportunity to create user-focused interfaces that enhance the digital experience. You will work closely with a dynamic team of designers and developers to deliver high-impact solutions that meet user needs and business goals.

Apr 30, 2026

Apply

Senior AI Developer

Veeam Software

Full-time|On-site|Prague, Czechia

Veeam Software supports organizations in understanding, protecting, and strengthening their data and AI systems. The company emphasizes data resilience and security posture management, connecting identity, data, security, and AI risk. Headquartered in Seattle, Veeam operates in over 30 countries and serves more than 550,000 customers who rely on dependable business continuity. Role overview This Senior AI Developer position is located in Prague, Czechia. The main focus is integrating AI technologies into Veeam’s product suite to enhance both functionality and performance. What you will do Develop and refine REST APIs using Python Contribute to projects that add AI features to existing Veeam solutions Work closely with fellow developers and product teams to deliver product improvements Requirements Solid experience with Python Strong understanding of REST API development Experience integrating AI technologies is an advantage

Apr 24, 2026

Apply

Development Trainee at yit1 | Brno

yit1

Part-time|On-site|Brno

Join yit1 as a Development Trainee and jumpstart your career in a dynamic environment where innovation meets professionalism. This is an exciting opportunity for individuals eager to gain hands-on experience in development processes while working alongside experienced professionals. In this role, you will assist in various projects, learn about industry practices, and enhance your technical skills.

Apr 1, 2026

Apply

JavaScript Developer (React) - Join Veeam in Prague

Veeam Software

Full-time|On-site|Prague, Czechia

Veeam Software, recognized as the leading global provider of data resilience, empowers businesses to manage their data seamlessly whenever and wherever they need it. With innovative solutions in data backup, recovery, portability, security, and intelligence, Veeam safeguards over 550,000 clients globally, ensuring their operations run smoothly. Join our dynamic team, where you can grow, learn, and contribute significantly to the success of some of the world’s largest enterprises. Step into the future of data resilience with us, and embrace the journey ahead.About the RoleAs a JavaScript Developer (React), you will be a key player in our team, responsible for developing and enhancing the frontend of Veeam products, including Veeam Backup & Replication and Veeam ONE.What You’ll DoDesign and implement user interface elements (dialogs, wizards, forms) using React.Enhance the functionality of existing components.Identify and resolve issues related to memory leaks and optimize performance.Engage with a micro-frontend architecture.Technologies You'll Work WithTypeScript, React 19, RxJSViteStyled-components, Veeam UiKitJest, PlaywrightAuto-generated REST clients (OpenAPI/Swagger)What You’ll Bring3+ years of professional experience in web application development.Strong expertise in JavaScript and CSS.Proficiency with TypeScript and React.Ability to communicate effectively in English with international teams.Bonus SkillsFamiliarity with automated testing frameworks (Jest, Playwright).Understanding of reactive programming patterns (RxJS or similar).Experience applying software design patterns in frontend applications.Knowledge of modern frontend development practices.

Feb 26, 2026

Apply

Senior Unity Developer - Poker Gaming

jobgether

Full-time|On-site|Czechia

Jobgether is looking for a Senior Unity Developer to help shape the future of poker gaming. This role centers on building polished, interactive poker experiences for players, using Unity as the core development platform. Role overview As a Senior Unity Developer, you will focus on designing and developing poker games that are both engaging and technically sound. The position calls for a strong understanding of Unity and a genuine interest in the mechanics and appeal of poker games. What you will do Develop and enhance poker gaming features using Unity Collaborate with other team members to deliver high-quality gameplay Apply your experience to improve game design and functionality Requirements Proven experience as a Unity Developer Strong interest or background in poker games Ability to work from Czechia

Apr 29, 2026

Apply

C++ Developer at Quadient | Hradec Králové

Quadient

Full-time|On-site|Hradec Králové

Are you passionate about solving complex problems and understanding the needs of your users? At Quadient, we seek a dedicated C++ Developer who thrives on prioritizing tasks and ensuring customer satisfaction. Our innovative applications reflect the creativity of our talented team. We value a desire to learn and experiment with new trends in practice.Proficiency in English, at least to the level of reading comprehension, is essential for our IT roles. Language skills can be further developed through our company benefits.Your role in shaping our future:Develop and maintain our core product, Inspire Designer, using C++.Support existing products and applications, addressing bugs and issues.Collaborate with and support software consultants (Technical Support) in resolving complex customer requests.Future projects may include work in C# .Net, JavaScript/TypeScript, and Java.

Dec 17, 2025

Apply

Senior Frontend Developer specializing in Svelte

ventrata

Full-time|On-site|Brno, South Moravian Region, Czechia

Ventrata builds SaaS solutions that power ticketing and booking experiences for attractions, tours, and activities worldwide. With headquarters in London and offices in Brno and Lisbon, our team supports clients across the globe. We are growing quickly and expanding into new markets, all while helping businesses deliver memorable experiences to their customers. Role Overview We are looking for a Senior Frontend Developer specializing in Svelte to help lead a full redesign of our core product. This is a hands-on position focused on rebuilding our mature application using Svelte 5. The project centers on overhauling our checkout widget, which handles complex booking flows, cross-selling, and management of dependent bookings. This marks a significant shift as we move our platform to Svelte 5. What You Will Do Work on a Single Page Application using Svelte 5, Vite, TypeScript, Tailwind CSS, Vitest, and Cypress Lead foundational migrations and upgrades, gaining a deep understanding of the codebase Translate Figma designs into maintainable, clear code Collaborate closely with our Tech Lead to drive technical implementation What We Look For Ownership: Take responsibility for delivering features and improvements, and ask questions when needed Discernment: Balance attention to detail with the ability to make timely decisions Results-driven: Commit to producing high-quality work Our Approach We value creative thinkers who act responsibly and take pride in their work. Our team is integrating AI technologies, such as Claude Code for code generation, to support and accelerate development. Location This role is based in Brno, South Moravian Region, Czechia.

Apr 20, 2026

Apply

Senior OSS Developer — Python (Remote)

httpie

Full-time|Remote|Prague

Job OverviewJoin our innovative team as a Senior OSS Developer specializing in Python. You will play a pivotal role in enhancing our suite of open-source tools, including the highly acclaimed httpie/httpie, which boasts over 50,000 stars on GitHub. Your contributions will help us maintain our commitment to simplicity and outstanding user experience.Your ResponsibilitiesLead the development and enhancement of our open-source tools.Design and implement features that prioritize simplicity and exceptional user experience.Create and maintain comprehensive documentation, technical articles, and blog posts.Engage with the community by addressing GitHub issues and reviewing pull requests.Oversee releases across various platforms including PyPi, Homebrew, and others.Contribute innovative ideas and code to the overall platform development.Provide support and answer queries on StackOverflow and Discord.QualificationsMinimum of 5 years in software engineering with a focus on Python.Proven experience in leading open-source projects.Excellent proficiency in English and technical writing.Strong understanding of HTTP protocols and modern API design.Genuine passion for developer tools and creating exceptional user experiences.Ability to make informed decisions between robust and minimalistic solutions.Comfortable navigating complex abstractions in software development.Eager to learn, teach, and share knowledge with others.Bonus QualificationsFamiliarity with Rust or Go programming languages.Experience in building technology products from the ground up.Background in early-stage startups.Demonstrated entrepreneurial spirit through side projects.What We OfferAttractive salary and equity options.Provision of high-end equipment including a MacBook Pro and accessories.Company-funded co-working space.Fully remote work environment.

Jan 6, 2023

Apply

C# Developer for Veeam Backup Solutions

Veeam Software

Full-time|On-site|Prague, Czechia

Veeam Software is a leading company in Data and AI Trust, dedicated to ensuring that organizations fully understand, secure, and build resilience around their data and AI capabilities. We empower businesses to accelerate the safe deployment of AI at scale. As the premier provider of data resilience and data security posture management, Veeam is positioned at the forefront of the intersection of identity, data, security, and AI risk. With our headquarters in Seattle and offices across more than 30 countries, Veeam safeguards the operations of over 550,000 clients globally, who rely on us to keep their businesses operational. Join our team and embark on a journey of fearless growth, learning, and making a significant impact for some of the largest brands worldwide.About the RoleWe are seeking a C# Developer to help enhance the backend of Veeam Backup for Hypervisors, improving data protection and fostering business resilience.ResponsibilitiesDesign and develop business logic for products in the virtualization domain (RHV, Nutanix, Proxmox VE, etc.)Create new product features and maintain existing functionalitiesImplement substantial functionalities across various components of the productContribute to the design and development of the overall architecture of the product

Mar 31, 2026

Apply

C++ Developer at Veeam Software | Prague

Veeam Software

Full-time|On-site|Prague, Czechia

Veeam is recognized as the Data and AI Trust Company, dedicated to empowering organizations to fully comprehend, secure, and fortify their data and AI systems, thereby facilitating the safe and scalable integration of AI technologies. As a leader in data resilience and security posture management, Veeam is designed to address the convergence of identity, data, security, and AI risk. With our headquarters in Seattle and a presence in over 30 countries, Veeam safeguards the operations of over 550,000 clients globally, who rely on us to maintain operational continuity. We invite you to join us as we courageously advance together, fostering growth, learning, and making a significant impact for some of the world’s most prominent brands.About the RoleAs a C++ Developer at Veeam, you will have the exciting opportunity to join one of our high-impact teams, contributing to a range of products and features. Throughout the recruitment process, we will align your interests and expertise with the team and project where your contributions can create the most significant impact.Your Responsibilities Will IncludeOptimizing and finalizing existing functionalities of the VBR product, focusing on application-aware processing and database plugins.Conducting performance analysis and profiling.Executing diagnostics and resolving bugs through log analysis and process dumps.Implementing network protocols between system components.Technologies We UtilizeC++ 17, C#, Windows/Linux, STL, Boost

Mar 19, 2026

Apply

PHP Developer at Purple Technology | Brno

Purple Technology

Full-time|On-site|Brno

Join our dynamic team at Purple Technology as a PHP Developer! We are looking for a passionate and skilled developer who is eager to build innovative applications and contribute to exciting projects. If you thrive in a collaborative environment and are keen on applying your PHP expertise to solve real-world problems, this is the perfect opportunity for you!

Mar 20, 2026

Apply

C++ Developer for NAS Backup Solutions

Veeam Software

Full-time|On-site|Prague, Czechia

Join Veeam, the premier Data and AI Trust Company, committed to empowering organizations to fully understand, secure, and make their data resilient. As a global leader in data resilience and security posture management, we are designed for the convergence of identity, data, security, and AI risk. With our headquarters in Seattle and offices across 30+ countries, we proudly support over 550,000 customers worldwide. Join us in our mission to innovate and make a meaningful impact for some of the world’s leading brands.About the RoleWe are seeking a talented C++ Developer to join our dynamic team responsible for advancing NAS backup functionalities for Veeam Backup & Replication.What You’ll DoDesign and implement efficient data processing algorithms within a multithreaded environment.Develop data storage formats and integrate with cloud services.Implement network protocols and APIs to connect system components.Optimize and enhance existing functionalities of the VBR product.Technologies You'll Work WithC++ 17, C#, Windows/Linux, STL, Boost, Multithreading

Mar 11, 2026

Apply

Front-End Developer (Vanilla JavaScript)

IceWarp

Contract|Hybrid|Praha, Praha, Hlavní město, Czechia

Join IceWarp, a leading Czech technology company that empowers over 50 million users globally with innovative communication solutions that rival the likes of Google and Microsoft. Our offerings include a comprehensive suite of services such as email, team chat, audio and video conferencing, calendar and contact synchronization, and collaborative document editing, all seamlessly integrated within a unified environment and accessible across major browsers and platforms, whether in the cloud or on-premises.Your Role:You will be part of our dynamic team focused on enhancing the Web Client, which serves as the pivotal web interface for email, chat, and collaboration.Your primary responsibility will be to leverage vanilla JavaScript to develop new features, refine the user interface, and optimize performance for an exceptional user experience.Collaboration is key; you'll work closely with UX/UI designers, backend developers, and QA engineers to ensure our product is fast, reliable, and enjoyable for users.

Apr 1, 2026

Apply

Senior C# Developer for Microsoft 365

Veeam Software

Full-time|On-site|Prague, Czechia

Veeam Software seeks a Senior C# Developer in Prague to help build and support applications for Microsoft 365. This position involves working with a team of experienced engineers to deliver dependable software solutions. Responsibilities Design, develop, and maintain applications using C# Create and support solutions that integrate with Microsoft 365 Collaborate closely with colleagues to ensure software reliability Requirements Extensive experience in C# development Interest in building software for Microsoft 365 environments Skill in designing and maintaining high-quality applications This role is located in Prague, Czechia.

Apr 23, 2026

Create account — see all 143 results

Browse all companies, explore by city & role, or SEO search pages. View directory listings: all jobs, search results, or location & role pages.