CrawlJobs Logo
Eucalyptus Logo Eucalyptus · IT - Software Development

Senior Frontend Engineer - Growth Experimentation

United Kingdom, London · Job Posted February 21, 2026
Apply Position
Job Link Share

Job Description

At Eucalyptus, we’re on a mission to make healthcare simpler, safer, and more accessible. Patients face friction when navigating care, and the Growth squad focuses on building frontend web experiences that directly move key metrics—retention, engagement, and conversions—while shaping the overall patient experience. One of the key initiatives you’ll contribute to is experimentation across the frontend platform, designing and testing features that influence how patients engage with our services. This is a chance to drive measurable impact and shape best practices for the platform used across the business.

Job Responsibility

  • Take ownership of the frontend web platform, ensuring scalable, polished, high-performance experiences
  • Design and deliver growth-focused experiments that improve retention, engagement, and conversions
  • Collaborate closely with product and marketing to translate insights into actionable features
  • Influence frontend best practices across the team and mentor teammates

Requirements

  • Strong React & TypeScript experience, with full ownership of web products
  • Experienced working on frontend platforms or product-facing web apps
  • Have a commercial mindset, understanding how features and experiments impact business metrics
  • Thrive in autonomous, senior-level roles, able to take ownership end-to-end

Nice to have

  • Growth-focused engineering experience
  • Experience with GraphQL
Eucalyptus - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Senior Frontend Engineer - Growth Experimentation

8 matching positions

Senior Growth Engineer

About Buffer: We create social media and brand-building software for small busin...
Location
Location
Salary
Salary:
156500.00 - 202300.00 USD / Year
buffer.com Logo
Buffer
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong frontend foundations in React, TypeScript, and modern web development
  • comfortable going beyond the frontend when the work calls for it - writing backend logic, building API routes, connecting third-party integrations
  • understands what it takes to grow something (hands-on experience with SEO, analytics, A/B testing, and conversion optimization or grown own product/startup/side project)
  • thinks beyond the immediate task
  • thrives in remote, async environments
  • communicates clearly, supports teammates, works effectively across marketing, design, and engineering
  • has built AI into user-facing marketing features at scale and uses AI tools daily
  • has a personal stake in the world of content creation
Job Responsibility
Job Responsibility
  • Own growth engineering projects end-to-end, from implementing a localization framework for international audiences to building referral program logic, attribution systems, and rebuilding tracking infrastructure for accuracy and reliability
  • build features on Buffer's marketing site that help people discover and try Buffer, shipping landing pages, interactive tools, and conversion flows
  • shape our marketing platform capabilities by building the systems and frameworks that help the whole team move faster
  • drive experimentation and optimization, helping the team learn faster through code
  • strengthen our foundations by maintaining integrations with our marketing technology stack (Segment, GTM, Mixpanel, BigQuery)
  • help shape our engineering culture by pairing with other engineers, reviewing code, sharing knowledge about growth systems and marketing engineering patterns
What we offer
What we offer
  • Competitive salary
  • work remotely
  • 4-day workweeks
  • health insurance
  • home office setup ($1000)
  • growth mindset fund
  • new laptop
  • unlimited free books
  • AI tools stipend
  • flexible time off
  • Fulltime
Read More
Arrow Right

Senior Growth Engineer - Conversion Rate Optimisation

We're looking for a Senior Growth Engineer who will lead Conversion Rate Optimis...
Location
Location
United Kingdom , London
Salary
Salary:
Not provided
arrive.com Logo
Arrive
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years in Full-Stack or Frontend Development
  • Deep experience with Vue.js/Nuxt is essential
  • Familiarity with Laravel/PHP is a major advantage
  • Solid grasp of A/B testing statistics (p-values, significance, sample sizing)
  • Experience with experimentation platforms
  • Comfortable with modern CI/CD (GitHub) and containerization (Docker)
Job Responsibility
Job Responsibility
  • Lead Conversion Rate Optimisation and own experimentation across our platform
  • Design, build, and analyse A/B tests that drive measurable conversion rate optimisation improvements across our driver and host journeys
  • Build and maintain the technical framework that allows us to run A/B tests without impacting site performance
  • Design and implement experiments across our host and driver journeys
  • Work across our frontend and backend to ensure tracking is accurate and tests are robust
  • Use analytics and heatmaps to challenge the status quo and propose high-impact experiments
  • Translate business goals into technical requirements, ensuring marketing and product objectives are technically feasible and secure
What we offer
What we offer
  • 24 days annual leave, increasing after 3 years (up to 3 additional days)
  • Birthday off
  • Hybrid working - 3 days per week in London reducing to 1 day per month after probation
  • Enhanced maternity and paternity leave
  • Learning and development opportunities
  • Gym membership (PureGym or discounted alternatives)
  • Mental health and wellbeing support via Canada Life
  • Cycle and tech schemes
  • Health Cash plan through Medicash
  • Pension scheme via Nest
  • Fulltime
Read More
Arrow Right

Senior Frontend Engineer

Copilot Studio is Microsoft’s enterprise platform for building and interacting w...
Location
Location
Ireland , Dublin
Salary
Salary:
Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related technical field AND proven years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
  • Strong proficiency in modern front-end technologies and architectures, including React, JavaScript, TypeScript, and state management solutions such as Redux, Recoil, MobX, or similar
  • Experience building and shipping AI-powered product features using large language models (LLMs), with hands-on experience integrating AI capabilities into user-facing or developer-facing workflows in production systems
  • Strong computer science fundamentals with demonstrated experience making architectural and design tradeoffs across platforms, environments, and complex systems
  • Demonstrated experience leading technical design and implementation of medium-to-large features or systems, including ownership of architecture, performance, reliability, and maintainability
  • Experience working with AI tools or AI-assisted development workflows (e.g., using coding models to generate, refactor, analyze, or validate code) as part of modern software development practices
  • Experience designing, building, and maintaining frontend build, testing, and quality practices, including unit, integration, and end-to-end testing, for scalable applications
  • Ability to collaborate across disciplines and teams, working effectively with product managers, designers, applied scientists, and other engineering partners to deliver cohesive end-to-end experiences
  • A track record of delivering customer-focused solutions with measurable user or business impact, and growing ownership in ambiguous or evolving problem spaces
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
Job Responsibility
Job Responsibility
  • Design and build complex, high-impact user experiences that simplify advanced AI capabilities for diverse user personas
  • Lead technical design for features spanning multiple components, influencing frontend architecture, UX quality, and system behavior
  • Drive projects from ambiguous problem statements through delivery, balancing speed, quality, and long-term maintainability
  • Partner deeply with design, product, and research to shape experience direction and execution
  • Leverage telemetry, experimentation, and user feedback to guide technical and experience decisions
  • Mentor peers and raise the bar for frontend engineering and experience quality
  • Define and drive the technical and experience architecture for major areas of Copilot Studio, with a strong emphasis on front-end frameworks, authoring experiences, and experience quality at scale
  • Design of complex, cross-team solutions spanning multiple components and services, demonstrating excellence in frontend architecture, performance, accessibility, and maintainability
  • Partner with senior product, design, and research leaders to on the long-term experience strategy, helping translate ambiguous product and business goals into durable technical solutions
  • Influence and align engineering decisions across teams and organizations, ensuring cohesive, consistent user experiences across Copilot Studio and the broader Microsoft Copilot ecosystem
  • Fulltime
Read More
Arrow Right

Senior Frontend Engineer

As a Senior Frontend Engineer on the RiskOS team, you will develop seamless, per...
Location
Location
India
Salary
Salary:
Not provided
socure.com Logo
Socure
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4–7 years of hands-on experience developing modern web apps with TypeScript, React, and popular workflows (such as Flux, Redux, or their equivalents)
  • Experience working collaboratively with product designers and cross-functional teams
  • Strong emphasis on user experience, with an understanding of end-user needs in designing UI flows and interactions
  • Proficiency with design and prototyping tools (such as Figma, Framer, InVision)
  • Familiarity with AWS cloud platform
  • In-depth knowledge of frontend performance optimization, accessibility (WCAG), and security best practices
  • Excellent communication skills and a track record in mentoring and guiding junior engineers
  • A growth mindset with enthusiasm for learning, experimentation, and staying updated on modern frontend technologies
Job Responsibility
Job Responsibility
  • Develop user interfaces based on high-fidelity designs and varying levels of functional specifications
  • Collaborate with product managers, designers, and engineers to build a best-in-class, customer-focused product
  • Own features end-to-end, from design reviews through production rollout, ensuring high quality, usability, and performance
  • Create unit, integration, and end-to-end tests for robust code and comprehensive feature coverage
  • Decompose complex technical and product challenges into actionable tasks and drive their completion
  • Advance our design systems and frontend architecture to enhance scalability, maintainability, and developer experience
  • Work closely with backend and infrastructure teams to define efficient APIs and data contracts
  • Mentor fellow engineers, share knowledge, perform code reviews, and promote engineering best practices
  • Uphold high standards for accessibility, performance, and security in frontend development
  • Operate within an agile, iterative environment that emphasizes rapid delivery and continual improvement
  • Fulltime
Read More
Arrow Right

Senior Frontend Engineer

Socure is building the identity trust infrastructure for the digital economy — v...
Location
Location
United States
Salary
Salary:
180000.00 - 210000.00 USD / Year
socure.com Logo
Socure
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5-7 years of experience developing modern web applications using TypeScript, React, and popular workflows (e.g., Flux, Redux, or equivalent)
  • Proven track record of writing clean, reusable, well-tested, and maintainable code
  • Experience collaborating with product designers and cross-functional teams
  • Strong focus on user experience and empathy for end users when designing UI flows and interactions
  • Hands-on experience with design and prototyping tools such as Figma, Framer, or InVision
  • Familiarity with cloud computing platforms like Google Cloud or AWS (preferred)
  • Deep understanding of frontend performance optimization, accessibility (WCAG), and security best practices
  • Excellent communication skills and a proven ability to mentor and guide junior engineers
  • Growth mindset with a passion for learning, experimentation, and keeping current with the latest frontend technologies
Job Responsibility
Job Responsibility
  • Develop robust user interfaces from high-fidelity designs and functional specifications of varying complexity
  • Collaborate with product managers, designers, and engineers to deliver an exceptional, customer-centric product
  • Own features end-to-end, from design reviews to production rollout, ensuring high quality, usability, and performance
  • Create comprehensive unit, integration, and end-to-end tests for robust code and broad functional coverage
  • Break down complex technical and product challenges into actionable tasks and drive them to successful completion
  • Contribute to the evolution of our design systems and frontend architecture to enhance scalability, maintainability, and developer experience
  • Partner with backend and infrastructure engineers to define efficient APIs and data contracts
  • Mentor and coach fellow engineers by sharing expertise, conducting code reviews, and promoting engineering best practices
  • Champion accessibility, performance, and security throughout frontend development
  • Work in an agile, fast-paced environment focused on rapid delivery and continuous improvement
What we offer
What we offer
  • Offers Equity
  • Offers Bonus
  • Fulltime
Read More
Arrow Right

Senior Frontend Engineer

Socure is building the identity trust infrastructure for the digital economy — v...
Location
Location
United Kingdom , London
Salary
Salary:
Not provided
socure.com Logo
Socure
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5-7 years of experience developing modern web applications using TypeScript, React, and popular workflows (e.g., Flux, Redux, or equivalent)
  • Proven track record of writing clean, reusable, well-tested, and maintainable code
  • Experience collaborating with product designers and cross-functional teams
  • Strong focus on user experience and empathy for end users when designing UI flows and interactions
  • Hands-on experience with design and prototyping tools such as Figma, Framer, or InVision
  • Familiarity with cloud computing platforms like Google Cloud or AWS (preferred)
  • Experience with node-based graph libraries (e.g., react-flow, litegraph.js) is a strong plus
  • Deep understanding of frontend performance optimization, accessibility (WCAG), and security best practices
  • Experience building and scaling design systems or component libraries is a plus
  • Excellent communication skills and a proven ability to mentor and guide junior engineers
Job Responsibility
Job Responsibility
  • Develop robust user interfaces from high-fidelity designs and functional specifications of varying complexity
  • Collaborate with product managers, designers, and engineers to deliver an exceptional, customer-centric product
  • Own features end-to-end, from design reviews to production rollout, ensuring high quality, usability, and performance
  • Create comprehensive unit, integration, and end-to-end tests for robust code and broad functional coverage
  • Break down complex technical and product challenges into actionable tasks and drive them to successful completion
  • Contribute to the evolution of our design systems and frontend architecture to enhance scalability, maintainability, and developer experience
  • Partner with backend and infrastructure engineers to define efficient APIs and data contracts
  • Mentor and coach fellow engineers by sharing expertise, conducting code reviews, and promoting engineering best practices
  • Champion accessibility, performance, and security throughout frontend development
  • Work in an agile, fast-paced environment focused on rapid delivery and continuous improvement
  • Fulltime
Read More
Arrow Right

Senior Software Engineer, Growth

Goody is a gifting company making it easy to send personal and corporate gifts. ...
Location
Location
United States
Salary
Salary:
150000.00 - 200000.00 USD / Year
ongoody.com Logo
Goody
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • You are highly motivated to be a driving force in the growth of Goody, by using code, AI, and creativity to help us share our product with more people
  • You're a full-stack engineer adept in both frontend (React/TypeScript) and backend (Ruby on Rails preferred, or strong experience in Python/Node)
  • You have at least four years of experience building production web applications
  • You have experience with growth engineering, experimentation, or working on user-facing funnels (acquisition, activation, retention)
  • You're comfortable with ambiguity and can drive projects from idea to shipped experiment to core feature
  • You bring great vibes and attitude that match our ethos of delivering delight to our senders and recipients
Job Responsibility
Job Responsibility
  • Own the growth engineering function: Partner closely with our Growth team to identify opportunities, design experiments, and ship changes that improve our core funnel metrics
  • Experiment fast and iterate: Implement A/B tests and experiments across our product, from landing pages to onboarding to customer lifecycle messaging, while learning quickly and using data to evaluate and inform next steps
  • Build new bets: Go beyond incremental optimization to prototype and ship new features, including dark horse ideas that could unlock disproportionate growth
  • Influence the product: Advocate for growth-minded thinking across the company and translate learnings into product improvements that benefit all users
What we offer
What we offer
  • 100% remote work
  • Group medical, dental, and vision coverage insurance (with opt-out benefits)
  • 401k
  • Stock options
  • Open PTO, with a company-wide summer break designed to counterbalance the demands of the year-end holiday season
  • Paid parental leave benefits
  • Annual company offsite – past locations include Cabo, San Diego, and Banff
  • $100/month reimbursement for wellness
  • $500 annual education stipend
  • Lots of Goodys!
  • Fulltime
Read More
Arrow Right

Senior Frontend / Fullstack Engineer – Web Team

Mentimeter is an engagement tool that turns presentations into conversations thr...
Location
Location
Sweden , Stockholm
Salary
Salary:
Not provided
mentimeter.com Logo
Mentimeter
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 6+ years of working on modern, scalable web applications
  • Deep knowledge of contemporary frontend technologies and frameworks
  • Ability to work across the stack when needed
  • Holistic thinking about architecture, performance, and long-term maintainability
  • Experience writing clean, thoughtful code
  • Thrive in cross-functional environments
  • Enjoy collaborating with marketing and design
  • Pride in building systems that enable others to succeed
  • Experience with CMS platforms, analytics tools and Ruby is a welcome bonus
Job Responsibility
Job Responsibility
  • Define how the website experience feels, performs, and evolves
  • Hands-on engineering using TypeScript, Node, React, Next.js
  • Build systems, tooling, and workflows that enable teams like Marketing and Growth to work autonomously, quickly, and creatively without compromising technical quality
  • Take a leading role in shaping the long-term technical direction of mentimeter.com
  • Drive architectural decisions and set standards for a scalable, performant, and maintainable web platform
  • Advocate for accessibility, performance, SEO, and security
  • Help strengthen a culture of experimentation and data-driven decision making
  • Mentor peers
  • Contribute to engineering culture
  • Influence the broader direction of Mentimeter’s web ecosystem
What we offer
What we offer
  • Diverse and inclusive work environment
  • Smart and driven colleagues
  • Continuous professional development
  • Access to a leadership program (including external personal coach)
  • Relevant education
  • Career opportunities in a growing company
  • Healthy view on work-life balance
  • Competitive compensation and benefits package
  • Pension contributions
Read More
Arrow Right