Вакансії JavaScript Developer

One of the biggest UK rail network companies operating with rail infrastructure and asset management has a need to develop and support enterprise-level information systems.
Align the data science initiatives with the overall business goals. This could range from improving customer satisfaction, enhancing operational efficiency, to driving sales growth.

Responsibilities

• Software development
• Unit/integration testing
• Azure environment configuration
• Customer communications

Must have skills

• 3+ years of experience
• Azure App service implementation and deployment.
• Fastapi and asyncio (asynchronous programming)
• Auth (OAuth, JWT, Microsoft authentication flow).
• Docs (OpenAPI, Swagger).
• SQL Alchemy or alternative DB integration libraries.
• Python, Pytest
• JS, Node
• SQL
• GIT and collaborative workflows
• Bash, shell scripting.

Nice to have

• Azure Container Management (docker, container registries, CI/CD to app services).
• CI/CD approaches
• Security across Azure (key vault, app service configuration, auth).
• Virtual Machine deployment
• Familiarity with storage accounts and their components

Join our AI Assistant Platform team as a Full-Stack Developer. You'll work on a high-impact system that empowers developers across Wix by building internal tools and infrastructure, enabling widespread AI adoption. This is a hands-on role where you’ll collaborate with engineers, product managers, and researchers from both the Frontend and Backend Guilds.

In your day-to-day you will:

• Architect and implement end-to-end solutions using React, TypeScript, and Node.js
• Design and build internal APIs and tooling that power AI-driven features across multiple products
• Develop and maintain scalable backend services and intuitive, data-rich dashboards for internal users
• Collaborate closely with AI researchers, product managers, and engineers across Frontend and Backend guilds
• Lead technical decisions that shape the platform’s scalability, reliability, and developer experience
• Drive improvements in code quality, performance, and maintainability through reviews and refactoring
• Facilitate integration of AI capabilities into product development by creating reusable infrastructure components

Requirements

• 4+ years of experience in full-stack, frontend or backend development
• Proficient in JavaScript and TypeScript
• Experienced in building applications with React and Node.js
• Skilled in designing and consuming REST APIs or gRPC services
• Familiar with SQL or document-based databases (e.g. MySQL)
• Curious about AI and eager to build tools that empower users
• Experience with Kafka or other event-driven systems – an advantage
• Background in building internal tools or developer platforms – an advantage

We are seeking a Senior Full Stack Engineer to join our team as a developer for our creator messaging capabilities. Messaging includes email, MMS, social media DMs, and ‘channel-based’ messaging (like Slack, Discord, or LINE).

The ideal candidate has extensive experience developing:

• Deliverability and sending infrastructure (ideally, with AWS SES)
• Google Workspace or Outlook365 integration experience
• DNS setup technology, especially related to custom domain enablement and email authentication
• Template customization tools (WYSIWYG), deep understanding of email HTML a plus
• Message automation, sequencing, and recipient list management features
• SMS/MMS text messaging integrations
• Direct messaging (ideally, Meta DMs) integration

In this role, you will work on our software platform’s messaging features, building out key features and strengthening our core platform. You will also utilize AI tools to improve efficiency and ensure our platform stays at the cutting edge of technology and innovation in the influencer marketing space.

In this role, you’ll get to:

• Lead the development and maintenance of front-end components for the Payments team using React, Angular, and other JavaScript frameworks.
• Design, develop, and deploy full stack solutions with a focus on high availability, performance, and scalability.
• Implement and maintain components within a design system to ensure consistency and reusability across the platform.
• Optimize web applications for maximum speed, accessibility, and scalability.
• Ensure the technical feasibility of UI/UX designs. Being comfortable implementing MVPs without high-fidelity designs using existing components is a plus.
• Collaborate with a Senior/Staff Backend Developer to ensure seamless integration between front-end and back-end systems and assist in the development of backend services using PHP, TypeScript, GraphQL, and AWS as needed.
• Collaborate with project managers, product managers, and other team members to deliver high-quality software solutions.

Who you are and what you’ll need for this position:

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent experience.
• 5-7+ years of experience in full stack development, with a strong focus on front-end technologies.
• Proficiency in React and Angular, with the ability to work with other JavaScript frameworks.
• Familiarity with backend frameworks and technologies such as PHP, TypeScript, GraphQL, and AWS.
• Experience implementing and maintaining components within a design system.
• Strong understanding of web development best practices, including performance optimization, accessibility, and responsive design.
• Excellent problem-solving skills, attention to detail, and ability to work independently and collaboratively.
• Strong communication skills for effective cross-functional collaboration.

Nice to Have:

• 2+ years of experience developing messaging applications (especially email).
• Experience with CI/CD practices.
• Knowledge of security best practices for web development.
• Experience working with large data sets and performance tuning.
• Experience or interest in using AI tools to speed up the development process.

We are looking for a Senior Front-End Engineer (Next.js) to join our team.
Working Hours: Minimum 4-hour overlap with US Central Time (CT)

Requirements:

• Five-year working experience building front-end applications at scale
• Expertise in Next.js and React
• Excellent knowledge of HTML, CSS, JavaScript, TypeScript
• Strong command of state management, performance optimization, and design systems
• Proficient in turning designs into polished UIs using Figma
• Skilled at integrating with RESTful APIs, managing auth flows (OAuth, SSO), and contributing to API design discussions
• Familiar with CI/CD pipelines and modern testing frameworks
• Experienced working in cross-functional teams, collaborating closely with design, product, and backend engineering
• Opinionated about front-end architecture with the ability to clearly justify technical decisions
• Knowledge of other modern web standards, security practices, front-end performance patterns, scalability, and accessibility practices
• Bachelor’s or Master’s degree in computer science (or similar technical field)
• Level of English: Upper-Intermediate (at least)

Responsibilities:

• Collect, analyze, and document technical requirements for software development
• Develop well-designed, easy maintainable, scalable, and reusable software
• Collaborate with product managers, designers, and backend engineers to deliver elegant user experiences
• Contribute to and help lead front-end architectural decisions, tooling, and best practices
• Ensure consistent quality through code reviews, testing, and documentation
• Accurately scope and estimate work during sprint planning, and deliver on time
• Research, study, and develop new or complex technical solutions/technologies (e.g. R&D). Bring fresh ideas that can benefit the project and the company
• Mentor and train junior and intermediate developers

We are looking for a Software Engineer to join a HubSpot engineering team working on the development of the Marketing Events functionality within the HubSpot ecosystem. Our mission is to help marketers track the success of their events and improve lead engagement by collecting, processing, and storing data about events and attendees.
You’ll be involved in creating new features, maintaining and improving existing ones, and solving real user issues. Our team also owns and supports integrations with third-party platforms like Eventbrite and GoToWebinar, enabling seamless synchronization of event data with HubSpot. Right now, we’re also focused on redesigning the Marketing Events page and migrating to HubSpot’s new UI library, replacing outdated components with modern and consistent UI elements.
HubSpot has a great engineering culture, carried by great teams in the USA, Ireland, Germany, Ukraine, and Armenia. The platform consists of thousands of microservices built with Java 21, lightweight DropWizard framework, and Google Guice dependency injection. It’s huge and you’ll have to deal with a lot of other stuff like Apache Kafka, Amazon SQS, S3, MySQL, HBase, and much more. The front end consists of single-page applications built with ECMAScript 6, TypeScript, React, Redux, and Sass. The Platform Team has built state-of-the-art infrastructure that allows developers to deploy their code to QA and Production environments with just a few button clicks. This enables you to focus entirely on designing and developing software – there is nothing easier than triggering a build and merge here.
HubSpot has a great onboarding course where you will get in touch with HubSpot’s infrastructure and then with our integration. During this period you will be actively involved in our working process with onboarding buddy. When your trial is finished you are going to be involved as DRI (Directly Responsible Individual) on new features and in PagerDuty rotation.

Responsibilities

• Communicate directly with product management and peers in Boston and Dublin, other HubSpot development teams to shape out requirements
• Work on the front end using React, ECMAScript 6, and Sass, contributing to single-page applications and UI improvements using HubSpot’s new UI library
• Create new and extend existing microservices using Java 21, DropWizard, and whatever technology/tools required to complete a particular task
• Cover your code with all kinds of automation tests (unit, integration, acceptance, API, end-to-end)
• Fully own the software you’ve developed: design, develop, test, release, and support in both stage and production environments

Personal Profile Overview

• Degree in Computer Science, Software Engineering or related field
• Stability in previous employment history with a tendency to remain with employers for extended periods
• Experience in managing diverse project activities (not just coding, but also requirements analysis, preparing estimations)
• Clear and effective communication skills, both verbal and written, ability to convey ideas, information, and messages accurately and efficiently
• Proficiency in fostering effective collaboration and teamwork activities
• Ability to analyze information, assess situations, and make decisions based on sound reasoning and logical evaluation
• Focus on delivering exceptional customer experiences and prioritizing customer satisfaction
• Analytical thinking, problem-solving abilities, and strategic approach to technical challenges
• Transparency in sharing the information within a team and company
• Willingness to acquire new knowledge and insights to enhance professional growth and performance

Required Skills

• 3+ years working with Java and JavaScript
• Front-end development experience (React or other modern JS frameworks)
• Excellent understanding of the OO design/programming paradigm
• Solid background in computer science and programming
• Strong knowledge of databases and networks (HTTP/REST)
• Good understanding of unit testing/test automation
• Experience or strong knowledge in microservice architecture and message broker systems such as Kafka, Amazon SQS, etc.
• English Upper-Intermediate (B2)

As a Plus

• Strong learning and development abilities
• Ability to work from the office in Lviv

What you’ll be doing:

• Collaborate with a cross-functional team alongside the Product Manager, UI designers, copywriters, researchers and other frontend and backend engineers to create and deliver engaging features to our users and clients.
• Build product features in React/Typescript, making sure your contributions adhere to our quality standards through testing (e.g end-to-end tests), effective monitoring and alerting configurations, and proactive management of technical debt.
• You will leverage your experience to guide the team in making informed technical decisions, such as continuous improvement of best practices.
• Collaborate with backend engineers, contributing to the design of GraphQL endpoints.

What you need to succeed:

• Collaborative mindset, with communication skills, capable of articulating technical concepts to a diverse audience.
• Proficient in building modern frontend applications including substantial experience (typically 3+ years) with React or other modern javascript frameworks. Familiarity with TypeScript is a plus.
• Demonstrate pragmatism in your work, balancing the need for timely delivery with the sustainability and technical integrity of our systems.
• Being able to prioritize user-centric development. Getting to know the needs of our users and considering those needs in your day-to-day work.
• Proficient in English (B2 level or equivalent) to effectively communicate in our work environment.

We are searching for a skilled and enthusiastic person to join our international team. You will be part of a team developing products for US companies. We specialize in web hosting companies. As a software engineer you will participate in the whole product development process. Phobosys offers solutions for any stage of the product life cycle.

Responsibilities:

• Conduct project design reviews and code reviews.
• Analyze and estimate implementation efforts.
• Be a technical mentor for less experienced team members.
• Report to PM about current tasks, status, technical, and other risks.

Required skills:

• Skills in back-end engineering using JavaScript/TypeScript in Object-Oriented meter.
• Libraries and micro frameworks (Nestjs, Express).
• Experience in back-end code performance analysis.
• Skills in databases SQL/non-SQL.
• Good written and spoken communication skills in English.

As a plus:

• Experience in virtualization technologies and microservices (docker).
• Skills in front-end technologies (React).
• Skills in MySQL.

We are searching for a skilled and enthusiastic person to join our international team. You will be a part of a team developing products for a US companies. As a software engineer you will participate in the whole product development process. Phobosys offers solutions for any stages of the product life cycle.

Responsibilities:

• Conduct project design reviews and code reviews.
• Analyze and estimate implementation efforts.
• Be a technical mentor for less experienced team members.
• Report to PM about current tasks, status, technical, and other risks.

Required skills:

• Skills in frontend and backend engineering using JavaScript in Object-Oriented meter.
• Frontend libraries and micro frameworks (React, Redux).
• Backend libraries and micro frameworks (Nestjs, Express, TypeScript).
• Experience in back-end code performance analysis.
• Skills in databases SQL/non-SQL.
• Good written and spoken communication skills in English.

As a plus:

• Experience in virtualization technologies and microservices (Docker, Kubernetes).
• Skills in backend technologies (python, Java, .Net or any other).
• Skills in frontend and technologies (Vue, AngularJS).

The SAP UA CSI organization is looking for developers to help build our next generation of cloud tools and solutions. Are you passionate about building innovative tools and services? Do you enjoy working in a collaborative environment with world-class engineers on a wide array of technologies? If this sounds like you, we want to hear from you!

Expectations

Because we are working on new tools that leverage AI, we need someone who is resourceful, eager to learn, a creative problem solver, and has strong collaborative skills. We're looking for someone who can:

• Design and execute the development of innovative features and functionalities across various web, in-memory, and cloud technologies, ensuring that they are secure and compliant according to latest standards and best practices.
• Adhere to project timelines and task commitments, ensuring timely delivery of high-quality work.
• Engage in agile development methodologies to foster efficient collaboration and iterative development cycles.
• Collaborate effectively with colleagues and stakeholders, actively contributing to team successes through task ownership and proactive participation.
• Demonstrate adeptness in resolving technical challenges amidst time constraints and high-pressure scenarios.
• Enhance user experiences by crafting intuitive and user-centric interfaces, prioritizing accessibility, and interactivity, while maintaining enterprise-level standards in backend services.
• Develop and manage both frontend and backend services to ensure seamless operation.
• Craft well-structured code that emphasizes readability and maintainability.

Role Requirements

• B.Sc. in Computer Science or Software Engineering.
• 3+ years of work experience.
• Experience in Web technologies development (CSS, HTML, JavaScript, TypeScript, ).
• Experience in UI frameworks. (React, Vue, UI5)
• Experience with micro-services architecture and infrastructure technologies, e.g. DBs, Networking, Redis etc.
• Strong problem-solving and debugging skills.
• Enthusiastic about quickly acquiring proficiency in new technologies.
• Fluent in English, with effective communication skills.
• Results-oriented mindset coupled with exceptional execution capabilities.

The following qualifications would be an asset

• Knowledge and experience in Git.
• Experience with container orchestration.
• Experience with tools like piper and hyperspace.
• Experience with tools like Elasticsearch and Kibana.
• Experience with architectures that use RAG models.
• Experience working with machine learning and large language models.
• Experience with SAP BTP and SAP Hana Cloud.