Senior Front End Engineer Job at Clinical Trial Media (Hauppauge)

Senior Software Engineer, Front-End or Full Stack

As a Senior Front-End Software Engineer, you will be working on a state of the a...

Location

United States , Marriott International HQ

Salary:

108300.00 - 190200.00 USD / Year

Marriott Bonvoy

Expiration Date

Until further notice

Requirements

7+ years of professional experience in front-end development
Strong proficiency in React and TypeScript
Solid understanding of web markup, including HTML5 and CSS3
Experience with state management libraries like Redux, Mobx, Zustand
Knowledge of modern front-end build tools and workflows (e.g., Webpack, Vite)
Excellent problem-solving skills and attention to detail
Effective communication and teamwork skills
Experience with monitoring tools like Dynatrace, Splunk, et al.
Proven ability to work in an Agile development environment
Experience with RESTful APIs and asynchronous programming

Job Responsibility

Develop and maintain front-end components and user interfaces using React and TypeScript
Collaborate with cross-functional teams to design and implement user-friendly features for all form factors
Optimize applications for maximum speed and scalability
Ensure the technical feasibility of UI/UX designs
Participate in code reviews to maintain code quality and consistency
Troubleshoot and debug issues as they arise
Stay up-to-date with the latest front-end technologies and best practices
Mentor and provide guidance to junior developers
Communicate effectively with team members, stakeholders, and clients

What we offer

Bonus program
Comprehensive health care benefits
401(k) plan with up to 5% company match
Employee stock purchase plan at 15% discount
Accrued paid time off (including sick leave where applicable)
Life insurance
Group disability insurance
Travel discounts
Adoption assistance
Paid parental leave

Fulltime

Senior Front-End Software Engineer

KAYAK is looking for a Senior Frontend Engineer to join our growing frontend tea...

Location

Lithuania , Kaunas

Salary:

3333.00 - 6600.00 EUR / Month

KAYAK

Expiration Date

Until further notice

Requirements

Education in Computer Science or related field
5+ years of experience in Web Development
Solid knowledge and hands-on experience in HTML, CSS, JavaScript, TypeScript and React
Experience with centralised state management tools e.g. Redux
Experience with CSS preprocessors e.g. Sass, Less
Understanding how frontend build tools work and ability to configure them e.g. Webpack, Rollup
Experience writing unit and E2E tests
Fluency in English
Ability to thrive in a hybrid working model, working at least three office days per week

Job Responsibility

Engage in collaborative product development with global teams
Participate in planning and execution of new features
Design and implement innovative, high-performing and scalable frontend solutions
Maintain and enhance existing code
Maintain existing and develop new solutions for automation: unit, integration, E2E testing

What we offer

Work from (almost) anywhere for up to 20 days per year
Funds for your career growth
Access to thousands of on-demand e-learnings
Generous additional Health Insurance
Flexible sick time off
Additional financial support for your sick leave
Additional day off on your birthday
Company-wide vacation week once a year (winter holidays)
Additional financial support during parental leave
Free lunch twice a week and daily snacks at the office

Fulltime

Senior Front-end Engineer

We're making the world of digital assets accessible and secure for everyone. Joi...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Engineer profile with at least 5 years of experience in software development
Good knowledge of UI/UX practices in software development
Proficient with JavaScript and TypeScript
Strong experience in React.js development, tools and libraries
Good knowledge of testing strategies

Job Responsibility

Own from a technical standpoint the desktop and mobile development of Ledger Live Applications
Collaborate with our devs, QA, designers, and product within Ledger Live teams
Take initiative and offer technical solutions
Develop features using best practices from unit to e2e testing
Participate in code reviews
Be responsible for the quality of Ledger’s UI/UX framework
Mentor and promote tech growth within the team, helping to set high standards for the team
Work 100% on Open Source projects all gathered in our monorepo: ledger-live
Share knowledge within Ledger and beyond

What we offer

Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
Flexibility: A hybrid work policy
Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
Well-being: Personal development, coaching & fitness with our dedicated partners
Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
High tech: Access to high performance office equipment and gadgets, including Apple products
Transport: Ledger reimburses part of your preferred means of transportation
Discounts: Employee discount on all our products

Fulltime

Senior Front-End Engineer

Senior Front-End Engineer to drive modern UI development for cloud-based busines...

Location

United States , West Los Angeles

Salary:

165000.00 USD / Year

Robert Half

Expiration Date

Until further notice

Requirements

6+ years of experience in UI development (HTML5, CSS3, JavaScript, Angular)
Expertise in Angular and front-end architecture
Strong knowledge of RESTful APIs, responsive design, and cross-browser compatibility
Experience with cloud deployments (AWS preferred)
Familiarity with CI/CD pipelines, Git, Jenkins, SonarQube, and Microsoft tech stack tools
Excellent communication and documentation skills

Job Responsibility

Lead front-end architecture and development with Angular and modern web technologies
Collaborate across teams to design and implement cloud-based solutions
Ensure application performance, scalability, and best practices in code quality
Mentor developers and champion user experience through intuitive design
Troubleshoot issues and drive improvements through CI/CD and DevOps practices

What we offer

Bonus
Medical insurance
Dental insurance
Vision insurance
401K with match
PTO
Professional development support

Fulltime

Senior Software Engineer – Front-End Development

Senior Software Engineer – Front-End Development for Product Engineering / Enter...

Location

India , Coimbatore

Salary:

Not provided

AMBC

Expiration Date

Until further notice

Requirements

Design, develop, and maintain front-end modules using Angular, TypeScript, HTML5, and CSS3/SASS, adhering to coding standards and best practices
Implement state management using NgRx and RxJS to ensure optimized, reactive, and scalable user interfaces
Integrate REST APIs and WebSocket services for seamless front-end and backend communication
Apply security best practices (XSS, CSRF, CORS) and performance optimization techniques such as lazy loading and modular architecture
Collaborate with architects and product managers to define UI design patterns, reusable components, and front-end architecture guidelines
Perform code reviews, debugging, and optimization to ensure maintainable, high-performing, and bug-free applications
Utilize Git/GitLab CI/CD pipelines for version control, automated builds, and deployments within cloud environments (preferably GCP)
Work closely with UI/UX teams using Figma or similar tools to translate design prototypes into responsive and accessible web interfaces
4 to 6 years work experience

Job Responsibility

Design, develop, and maintain front-end modules using Angular, TypeScript, HTML5, and CSS3/SASS, adhering to coding standards and best practices
Implement state management using NgRx and RxJS to ensure optimized, reactive, and scalable user interfaces
Integrate REST APIs and WebSocket services for seamless front-end and backend communication
Apply security best practices (XSS, CSRF, CORS) and performance optimization techniques such as lazy loading and modular architecture
Collaborate with architects and product managers to define UI design patterns, reusable components, and front-end architecture guidelines
Perform code reviews, debugging, and optimization to ensure maintainable, high-performing, and bug-free applications
Utilize Git/GitLab CI/CD pipelines for version control, automated builds, and deployments within cloud environments (preferably GCP)
Work closely with UI/UX teams using Figma or similar tools to translate design prototypes into responsive and accessible web interfaces

Fulltime

Senior Front-End Engineer

Senior Front-End Engineer (Data Lineage) at Ataccama. Our vision is to be the le...

Location

Slovakia , Bratislava

Salary:

4500.00 EUR / Month

Ataccama

Expiration Date

Until further notice

Requirements

4+ years of experience building web apps
Interest in building a complex web application using TypeScript, React, Styled Components, Zustand, and GraphQL/Apollo
Experience with rendering node based diagrams and flows is a plus
You are proactive and able to drive the development of a specific feature
You’ll take ownership of a particular user flow, starting with its architecture and development and finishing by running it in the Cloud
You’d enjoy being part of a Front-End Circle whose members are keen to learn from each other
You are ready to receive and also give feedback
You want to work in an international environment, and you don’t mind sharing your knowledge with others
You see the value of data, understand its importance for businesses, and would like to learn more about it
Full professional working proficiency in English

Job Responsibility

Data Lineage Visualization: Lead the implementation of a dynamic frontend for visualizing data lineage, transforming complex data flows into intuitive, interactive diagrams
Collaborative Innovation: Partner with backend developers, UX designers, and the Product Manager to translate ideas into user-centric solutions
Microfrontends Pioneer: Advance our microfrontends initiative, shaping a modular and scalable architecture
Various deployment types: You are a flexible multitasker capable of delivering small, frequent SaaS releases with robust automated regression testing to maintain high standards and exceed customer expectations
End-to-End Ownership: Own our Data Lineage domain from understanding customer needs, through implementation, to operational support
Engage with a Live Frontend Community: Be part of a vibrant community to share knowledge, seek advice, and stay updated with the latest trends and practices

What we offer

Long-Term Incentive Program
2 sick days and 25-30 days of vacation, with the option to request additional Flexible Time-Off days when needed
The Global Family Support Program - a paid leave program to help all parents focus on the new addition to their family
Flexible working hours & hybrid work setup
Benefit Plus - flexible employee benefit platform (incl. Multisport card)
Annual package for mental health support
"Bring Your Friend" referral program
Online courses & company access to Udemy to hone your skills
Conference tickets to the best industry events of the year
Company library, where you can even suggest the best educational books for us to order

Fulltime

Senior Front End Excel / Javascript Engineer

DEPT® is looking for a strong Front End Developer with extensive experience with...

Location

Argentina , Gran Buenos Aires, Capital Federal, Mar del Plata

Salary:

Not provided

BASIC/DEPT®

Expiration Date

Until further notice

Requirements

Strong Front End Developer with extensive experience with Office Javascript API
Proficiency in frontend frameworks like React, Angular, or Vue.js
Understanding of Excel Add-in development
Familiarity with Office Add-ins platform, its architecture (manifest file and web application components), and deployment methods
Experience with Office JavaScript API, HTML, CSS, JavaScript (or TypeScript), Frontend Frameworks (React, Angular, Vue.js), Node.js, Office Add-ins Development Kit, Visual Studio Code, Yeoman
Based in Argentina or Uruguay
English communication skills

Job Responsibility

Building User Interfaces in Excel: Designing and developing task panes, custom ribbon buttons, menus, and other UI elements within Excel
Integrating with Excel Functionality: Using the Office JavaScript API to read and write data, interact with Excel objects (like charts and tables), and extend its capabilities
API Integration: Connecting the add-in to external data sources or APIs to retrieve or send information
Performance Optimization: Ensuring the add-in loads quickly and user interactions are responsive

What we offer

Collaborative, open-door, best-idea-wins environment that fosters personal and company growth
Equal opportunity employer (EOE)
Inclusive and barrier-free recruitment and selection process and workplace
B Corp-certified company passionate about purpose-driven work

Senior Front-end Engineer I

We are looking for a talented Senior Front-end Engineer to join our dynamic AI f...

Location

United States , NYC

Salary:

140000.00 - 165000.00 USD / Year

Conductor

Expiration Date

Until further notice

Requirements

5+ years of experience in front-end development
At least 3 years in building scalable and secure SaaS application platforms and systems for intelligent applications
Expert-level proficiency in React and TypeScript
Comfortable using design tools like Figma or Sketch to collaborate with designers
Familiarity with microfrontend architectures
Deep understanding of modern front-end technologies, including state management, component libraries, and build tools
Proven experience building complex, interactive, and high-performance user interfaces
Strong product mindset, with a genuine curiosity to understand user needs, challenge assumptions, and shape product direction through thoughtful input
Thrive in fast-paced, ambiguous startup environments, taking initiative, owning outcomes, and communicating effectively across teams

Job Responsibility

Craft elegant and user-friendly front-end experiences using React and TypeScript
Collaborate cross-functionally with product managers, UX designers, and fellow engineers to define technical requirements and deliver scalable, high-impact solutions
Engage in thoughtful code reviews, promoting clean, maintainable, and high-quality code
Support and guide junior engineers, helping to cultivate a culture of learning and collaboration
Drive continuous improvement by contributing to engineering best practices and development workflows
Take full ownership of the front-end development lifecycle, from concept and technical design to implementation and deployment

What we offer

100% covered employee medical plan
Dental & vision plans
401(k) with employer contribution
Unlimited vacation policy
10 sick days
Short-term disability
Long-term disability
Generous paid parental leave
Employee assistance program
Flexible savings accounts

Senior Front End Engineer

Clinical Trial Media

Location:
United States , Hauppauge

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 07, 2025

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