Senior Frontend Platform Engineer Jobs

New

Senior Frontend Platform Engineer

We are looking for a Senior Frontend Engineer to join our Frontend Tech platform...

Location

Ireland , Dublin

Salary:

Not provided

Intercom

Expiration Date

Until further notice

Requirements

5+ years of experience using React to build or support complex UIs
Deep knowledge of Web UI technologies (JavaScript, CSS, HTML) and Node.js
A proven track record of enabling other engineers or product teams
Ideally, experience building or supporting a SaaS product in a previous role and enjoying the impact of globally used software
Significant, demonstrated impact on product and team performance in previous roles
Proficient with standard software engineering methodologies, e.g., unit testing, code reviews, design documentation
Able to effectively articulate technical challenges and solutions
Ability to learn quickly, iterate, unblock oneself, and persist until the right problem is solved

Job Responsibility

Collaborate with other world-class domain experts to shape our technical direction and frontend infrastructure
Actively contribute to our technical strategy and architecture as we continue to scale deeply owning aspects of our infrastructure at Intercom and autonomously executing on high impact projects
Develop new tools and services that make it fast, safe, and easy for other Intercom engineers to leverage our web frameworks
Participate in all phases of software development, including ideation, prototyping, design, and implementation
Play an active role in hiring, mentoring, and career development of other engineers
Raise the bar for technical standards, performance, reliability, and operational excellence

What we offer

Competitive salary and equity in a fast-growing start-up
We serve lunch every weekday, plus a variety of snack foods and a fully stocked kitchen
Regular compensation reviews - we reward great work
Pension scheme & match up to 4%
Peace of mind with life assurance, as well as comprehensive health and dental insurance for you and your dependents
Flexible paid time off policy
Paid maternity leave, as well as 6 weeks paternity leave for fathers, to let you spend valuable time with your loved ones
If you’re cycling, we’ve got you covered on the Cycle-to-Work Scheme. With secure bike storage too
MacBooks are our standard, but we also offer Windows for certain roles when needed

Fulltime

Senior Frontend Engineer

We’re hiring a Senior Frontend Engineer to help shape the future of the enterpri...

Location

Salary:

Not provided

Island

Expiration Date

Until further notice

Requirements

5+ years of experience as a Fullstack Engineer
Hands-on experience with cloud platforms (AWS, GCP, or Azure)
Strong skills in both modern frontend and backend technologies
Ability to thrive in fast-paced, collaborative environments

Job Responsibility

Work on the core of our enterprise browser platform — building scalable, high-performance features that power the modern enterprise
Collaborate closely with product and design teams to craft intuitive user experiences
Tackle complex engineering challenges on both frontend and backend systems
Push boundaries: streamlining workflows, enhancing productivity, and redefining what’s possible inside the browser

Fulltime

New

Senior Frontend Engineer

We’re looking for a Senior Frontend Engineer who cares deeply about how fast, st...

Location

United States

Salary:

175000.00 - 200000.00 USD / Year

Arize

Expiration Date

Until further notice

Requirements

5+ years of experience building user-facing web applications, including senior-level ownership of complex, high-impact projects
Fluent in React and TypeScript, and have helped shape or modernize a frontend stack
Practical experience with GraphQL (schemas, queries, mutations, performance considerations) and at least one GraphQL client
Worked on performance-sensitive or data-heavy products (dashboards, observability, dev tools, ML platforms, real-time UIs)
Use metrics and traces to guide performance work
Care about UX quality such as loading states, error states, keyboard shortcuts, micro-interaction, and express that care through clean abstractions and solid architecture
Energized by education

Job Responsibility

Spend most of your time building rich, performant frontend experiences in React + TypeScript (dashboards, traces, configuration flows, real-time views)
Collaborate with backend engineers on requirements, define API contracts, implement UI, and ship with metrics, logs, and alerts wired up
Design and implement patterns built for scale that work under real data and load
Lead frontend architecture decisions around routing, data fetching, caching, and client-side error handling
Use analytics tools, browser performance profilers, and Core Web Vitals to measure, debug, and continuously improve frontend performance
Build and iterate on visualizations for model performance, agent behavior, and real-time signals by paying attention to rendering performance and perceived latency
Drive UI resilience: robust loading states, optimistic updates where appropriate, pagination / virtualization, retry logic, and graceful degradation
Provide technical leadership: reviewing designs and PRs, mentoring engineers on frontend patterns and performance, and raising the bar on UX quality in code

What we offer

Competitive equity package
Comprehensive benefits package, including medical, dental, vision
401(k) plan
Unlimited paid time off
Generous parental leave plan
Additional support for mental health and wellness
WFH monthly stipend to pay for co-working spaces

Fulltime

Senior Frontend Engineer

As a frontend engineer at Inflection, you will craft intuitive, responsive, and ...

Location

United States , Palo Alto

Salary:

175000.00 - 350000.00 USD / Year

Inflection AI

Expiration Date

Until further notice

Requirements

Have 4+ years of experience building and maintaining production-grade web applications
Are fluent with React, Next.js, TypeScript, and frontend performance debugging tools (e.g., Lighthouse, Chrome DevTools, Web Vitals)
Have shipped interactive UIs from scratch—ideally handling real-time updates, accessibility, and responsive design
Understand trade-offs between UX richness, responsiveness, performance, and maintainability
Have designed systems balancing experimentation and rapid iteration with long-term scalability
Are energized by working in a fast-moving, cross-functional environment with deep technical challenges
Have a bachelor’s degree or equivalent in a related field to the offered position requirements

Job Responsibility

Architect and develop performant, maintainable frontend systems using Next.js, TypeScript, and React
Collaborate with researchers to surface advanced model behaviors—including tool use, RAG, and personalization—through intuitive UX paradigms
Develop and maintain internal UI components and design systems used across multiple product surfaces
Integrate real-time data and analytics pipelines to visualize assistant behavior, model performance, and user feedback
Build developer infrastructure to support fast iteration cycles: hot reloading, component testing, E2E automation, and visual diffing
Partner across the stack with backend and platform teams to ship end-to-end features with minimal latency and maximum reliability
Contribute to a culture of high code quality, continuous improvement, and shared ownership

What we offer

Diverse medical, dental and vision options
401k matching program
Unlimited paid time off
Parental leave and flexibility for all parents and caregivers
Support of country-specific visa needs for international employees living in the Bay Area
Competitive stock options

Senior Engineer - Platform - Permission and Login

You will be a core member of #team_permissions_and_login, the team responsible f...

Location

Australia , Sydney

Salary:

Not provided

Culture Amp

Expiration Date

Until further notice

Requirements

Extensive experience building and operating web-based software applications, with a deep understanding of scalability, security, and maintenance
Solid experience in one or more of TypeScript, Go, Kotlin or Ruby, and a strong willingness to learn new languages and technologies
A proven track record of building and maintaining both backend and frontend services
A commitment to writing clean, maintainable, and well-documented code
Excellent communication skills

Job Responsibility

Tackle a wide variety of technical challenges as we evolve our architecture from a monolith to a distributed, event-driven microservices platform
Contribute to a pivotal team that supports all of our product teams growth
Own the entire feature lifecycle, from conception through to deployment and production
Collaborate and lead by example, whether it’s through pair/team programming, writing solution designs, or providing thoughtful feedback on pull requests
Collaborate across teams to empower them with our shared services for authentication, authorization, and feature management

What we offer

Employee Share Options Program
Programs, coaching, and budgets to help you thrive personally and professionally
Access to external providers for mental wellbeing and coaching support
Monthly Camper Life Allowance
Team budgets dedicated to team building activities and connection
Intentional quarterly wellbeing pauses
Extended year-end breaks
Excellent parental leave and in work support program available from day 1
5 Social Impact Days a year
MacBooks for you to do your best & a work from home office budget

Senior Frontend Engineer

We're seeking a contract-to-hire Senior Frontend Engineer to join our cross-func...

Location

United States , New York

Salary:

145000.00 - 170000.00 USD / Year

Complex NTWRK

Expiration Date

Until further notice

Requirements

5+ years of professional experience building frontend applications at scale with expert-level proficiency in React, TypeScript, and component-based architecture
Strong experience with SSR frameworks (Next.js, Remix) and ability to write accessible, performant, SEO-friendly code with a mobile-first approach
Deep understanding of mobile UX principles, browser performance optimization, Core Web Vitals, and cross-device compatibility
Demonstrated eye for aesthetics with a proven track record of building interactive, highly engaging user experiences that captivate audiences
Experience creating rich animated and parallax storytelling experiences using creative coding libraries (p5.js, Three.js, D3.js, WebGL, Canvas APIs)
Ability to rapidly deliver working prototypes with minimal oversight while navigating ambiguity and translating creative briefs into technical solutions
Strong collaboration skills with designers, creatives, and strategists, balancing technical constraints with creative vision
Applicants must be willing and able to work on-site in New York, NY
Candidates must be legally authorized to work in the U.S. without the need for visa sponsorship

Job Responsibility

Design, develop, and maintain complex, responsive frontend applications using React, Next.js, and Remix
Implement high-quality UI components that scale across our media and e-commerce platforms
Partner with product managers and designers to translate business and user requirements into intuitive interfaces
Own key areas of the frontend codebase, driving improvements in code organization, performance, and maintainability
Lead technical discovery and scoping for frontend features, ensuring alignment with backend and mobile teams
Optimize site speed, accessibility, and SEO using best practices in SSR, lazy loading, and Core Web Vitals
Contribute to shared frontend libraries, tooling, and design system components to support team consistency
Conduct technical reviews, pair programming, and mentorship to grow frontend capabilities across the organization
Monitor production issues affecting the UI layer and participate in the on-call rotation for frontend concerns

Fulltime

New

Senior Frontend Engineer (UI/UX)

Embark on a transformative journey as a Senior Frontend Engineer (UI/UX). At Bar...

Location

United States , Whippany

Salary:

120000.00 - 175000.00 USD / Year

barclays

Expiration Date

Until further notice

Requirements

Designing, building, testing, and implementing responsive UIs using React, React Testing Library, React Query, TypeScript, JavaScript, Redux, Angular, HTML, CSS, Styled Components, and ES6
Using Figma or similar tools to inspect design specs, collaborate with designers, and ensure accurate UI implementation
Applying UI/UX principles to deliver smooth, intuitive user experiences with good attention to detail
Writing clean, efficient, maintainable code using object-oriented design principles
Working with build tools and CI/CD pipelines such as GitLab
Exposure to Java, databases, or AI-driven technologies
Experience with cloud platforms such as AWS or Azure
Understanding containerization technologies like Kubernetes and Docker
You may be assessed on the key critical skills relevant for success in this role, such as risk and controls, change and transformation, business acumen, strategic thinking, digital and technology, as well as job-specific technical skills.

Job Responsibility

Development and delivery of high-quality software solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance
Cross-functional collaboration with product managers, designers, and other engineers to define software requirements, devise solution strategies, and ensure seamless integration and alignment with business objectives
Collaboration with peers, participate in code reviews, and promote a culture of code quality and knowledge sharing
Stay informed of industry technology trends and innovations and actively contribute to the organization’s technology communities to foster a culture of technical excellence and growth
Adherence to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions
Implementation of effective unit testing practices to ensure proper code design, readability, and reliability
To advise and influence decision making, contribute to policy development and take responsibility for operational effectiveness. Collaborate closely with other functions/ business divisions
Lead a team performing complex tasks, using well developed professional knowledge and skills to deliver on work that impacts the whole business function. Set objectives and coach employees in pursuit of those objectives, appraisal of performance relative to objectives and determination of reward outcomes
If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others
OR for an individual contributor, they will lead collaborative assignments and guide team members through structured assignments, identify the need for the inclusion of other areas of specialisation to complete assignments. They will identify new directions for assignments and/ or projects, identifying a combination of cross functional methodologies or practices to meet required outcomes

What we offer

Competitive holiday allowance
Life assurance
Private medical care
Pension contribution
This position is eligible for an incentive award
Barclays employees are eligible for a suite of competitive and generous employee benefits, including medical, dental and vision coverage, 401(k), life insurance, and other paid leave for qualifying circumstances

Fulltime

Senior Frontend Engineer (Application Security)

At Easygo, our DevSecOps team is at the heart of our engineering, security and o...

Location

Australia , Melbourne

Salary:

Not provided

Easygo Gaming

Expiration Date

Until further notice

Requirements

Bachelor's/Master's degree in Computer Science or equivalent practical experience
7+ years of hands-on experience in software engineering, with a primary focus on security engineering
Strong understanding of code architecture and design principles
Excellent problem-solving skills and the ability to thrive in a fast-paced, dynamic environment
Strong communication skills for effective collaboration with teams and stakeholders
Analytical mindset to address complex technical challenges and devise innovative solutions
Positive attitude and eagerness to learn new technologies to grow as a security engineer

Job Responsibility

Lead by example, and drive the adoption of secure software development lifecycle (SSDLC) practices. This includes performing threat modelling, providing secure coding guidance to development teams, and embedding security requirements early in the design phase
Own, improve, execute and manage various security tests, including SAST, DAST, and SCA, to identify vulnerabilities. Analyse test results and prioritise findings. Fix what you find, and work with developers to ensure timely remediation
Implement and maintain automated security controls within the CI/CD pipeline. This involves integrating security tools to enable continuous security testing and monitoring, making security an integral part of the DevSecOps process
Deploy and configure Web Application Firewalls (WAFs) and Runtime Application Self-Protection (RASP) solutions to protect from real-time attacks. Respond to urgent application security incidents as needed
Take ownership of the platform vulnerability management program. This involves tracking, prioritising, and remediation of security flaws found in applications, ensuring all vulnerabilities are addressed and verified
Actively engage in hands-on coding, testing, debugging, and troubleshooting to ensure code quality, scalability, and maintainability
Write efficient, scalable, and maintainable code, adhering to coding standards and best practices
Innovate within the team by pushing for improvements and driving constructive changes to enhance team performance and efficiency
Analyse complex problems and provide effective solutions, contributing to team goals and initiatives
Lead and independently complete medium-sized projects or initiatives from start to finish

What we offer

Access to over 9,000 courses across our Learning and Development Platform
EAP access for you and your family
Be rewarded with lucrative annual bonuses
Give back with a paid volunteer day
Fuel your day with daily breakfast and open pantries brimming with unlimited snacks and refreshments, all on the house
Break up the week with on site remedial massage Wednesdays
In house full-time barista’s providing you your daily coffee needs
Weekly team lunches and happy hour in the office from 4pm on Fridays
Enjoy a bustling office with the option for up to 2 days work from home per week
Fun office environment with pool tables, table tennis and all your favourite gaming consoles

Fulltime

Senior Frontend Platform Engineer

Intercom

Location:
United Kingdom , London

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 26, 2025

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