At a Glance
- Tasks: Own and ship impactful features that drive activation and revenue metrics.
- Company: Join Synthesia, the leading AI video platform trusted by Fortune 100 companies.
- Benefits: Competitive salary, stock options, 25 days leave, and a vibrant work culture.
- Other info: Dynamic environment with rapid iteration and significant career growth opportunities.
- Why this job: Be part of a pioneering team shaping the future of AI and visual communication.
- Qualifications: Experience in activation, conversion, and building experimentation infrastructure.
The predicted salary is between 100000 - 100000 € per year.
Synthesia is the world’s leading AI video platform for business, used by over 90% of the Fortune 100. Founded in 2017, the company is headquartered in London, with offices and teams across Europe and the US. As AI continues to shape the way we live and work, Synthesia develops products to enhance visual communication and enterprise skill development, helping people work better and stay at the center of successful organizations.
Following our recent Series E funding round, where we raised $200 million, our valuation stands at $4 billion. Our total funding exceeds $530 million from premier investors including Accel, NVentures (Nvidia's VC arm), Kleiner Perkins, GV, and Evantic Capital, alongside the founders and operators of Stripe, Datadog, Miro, and Webflow.
About the role:
- Own and ship high-impact experiments and features end-to-end - from hypothesis to production - that directly move activation, conversion, and revenue metrics.
- Design for measurable outcomes, not just output, and iterate quickly based on data.
- Work full-stack across the Growth surface: activation flows and onboarding, self-serve and freemium infrastructure, pricing and packaging mechanics, PQL-to-enterprise funnels, viral and sharing loops.
- Build and extend the team's experimentation platform, constructing A/B infrastructure, instrumentation, and metrics pipelines that power how the whole product grows.
- Partner closely with product managers and data analysts to prioritise the highest-leverage work, make clear trade-offs between experimentation velocity and long-term scalability, and translate ambiguous business problems into clean technical solutions.
Team you would be joining – Growth:
The Growth team is dedicated to driving high NDR and sustainable revenue growth through self-service and freemium offerings, improving user experience, and optimising conversion pathways while aligning with enterprise goals. This team operates at the intersection of product, engineering, and data, shipping experiments rapidly and iterating based on measurable outcomes.
What we're looking for:
- Experience in activation, conversion, monetisation, or PLG systems - not growth marketing or CMS/content engineering.
- Experience building or significantly extending experimentation infrastructure - A/B systems across cached and non-cached pages, metrics pipelines, experiment orchestration - at the builder bar, not just the user bar.
- A habit of quantifying your own impact: you default to metrics (conversion %, activation rate, ARR lift, INP/TTI) when describing what you shipped.
- Strong product sense and ownership mindset - comfortable owning the problem definition, trade-offs, and technical approach, not just the implementation tickets.
- Experience with viral mechanics, sharing loops, or team-expansion features is a strong plus.
Why join us?
We're living the golden age of AI. The next decade will yield the next iconic companies, and we dare to say we have what it takes to become one.
Our culture:
At Synthesia we're passionate about building, not talking, planning or politicising. We strive to hire the smartest, kindest and most unrelenting people and let them do their best work without distractions. Our work principles serve as our charter for how we make decisions, give feedback and structure our work to empower everyone to go as fast as possible.
Serving 50,000+ customers (and 90% of the Fortune 500):
We're trusted by leading brands such as Heineken, Zoom, Xerox, McDonald's and more.
Proprietary AI technology:
Since 2017, we've been pioneering advancements in Generative AI. Our AI technology is built in-house, by a team of world-class AI researchers and engineers.
AI Safety, Ethics and Security:
AI safety, ethics, and security are fundamental to our mission. While the full scope of Artificial Intelligence's impact on our society is still unfolding, our position is clear: People first. Always.
The hiring process:
- 30-40min call with our Technical Recruiter
- 45min call with an Engineering Manager about your past projects
- 90min Live Coding interview, a collaboration exercise with our Engineer (not Leetcode style)
- 60min System Design, technical discussion usually about a real problem we had in production
- 45min call with leadership, focus on examples of collaboration, growth and going through details of your future team
The process does not need to take long - we can be done in seven working days.
Other important info:
- Our preference is for this role to be based either in-office or remote in the following locations: UK, Germany, Switzerland or Ireland.
- The salary starts at EUR/GBP/CHF 100,000 base + stock option plan.
- This is full-time employment only - no contractors possible - usually through OysterHR.
- Everyone at Synthesia gets 25 days of leave + local holidays (no extra paid or unpaid leave possible).
- We only sponsor VISA if you are in the UK/EU country already and need support.
Senior Frontend Engineer, Growth in London employer: Synthesia
At Synthesia, we pride ourselves on fostering a dynamic and innovative work culture that empowers our employees to take ownership of their projects and drive impactful results. With a strong focus on personal and professional growth, we offer unique opportunities to work with cutting-edge AI technology in a collaborative environment, all while being part of a company that is shaping the future of visual communication. Our London headquarters provides a vibrant setting for creativity and teamwork, making it an excellent place for those looking to make a meaningful contribution in the tech industry.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Frontend Engineer, Growth in London
✨Tip Number 1
Get to know the company inside out! Research Synthesia's products, values, and recent achievements. This will help you tailor your conversations and show that you're genuinely interested in being part of the team.
✨Tip Number 2
Practice your coding skills and be ready for that live coding interview! Focus on real-world problems and think about how you'd approach them in a collaborative environment. Remember, it's not just about getting the right answer but also about how you communicate your thought process.
✨Tip Number 3
Prepare examples from your past work that highlight your experience with activation, conversion, and experimentation infrastructure. Be ready to discuss how you've quantified your impact and the metrics you've used to measure success.
✨Tip Number 4
Don't forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you're proactive and serious about joining us at Synthesia.
We think you need these skills to ace Senior Frontend Engineer, Growth in London
Some tips for your application 🫡
Tailor Your Application:Make sure to customise your CV and cover letter for the Senior Frontend Engineer role. Highlight your experience with activation, conversion, and monetisation systems, as well as any relevant projects that showcase your skills in building experimentation infrastructure.
Show Your Impact:When describing your past work, focus on quantifiable results. Use metrics like conversion rates and ARR lift to demonstrate how your contributions have made a difference. We love seeing numbers that tell a story!
Be Authentic:Let your personality shine through in your application. We’re looking for passionate individuals who are excited about building and innovating. Don’t be afraid to share what drives you and why you want to join our team at Synthesia.
Apply Through Our Website:We encourage you to submit your application directly through our website. It’s the best way for us to receive your details and ensures you’re considered for the role. Plus, it shows you’re keen to join our amazing team!
How to prepare for a job interview at Synthesia
✨Know Your Metrics
Before the interview, brush up on key metrics related to activation, conversion, and monetisation. Be ready to discuss how you've used these metrics in your past projects to drive growth. This will show that you understand the importance of data-driven decision-making.
✨Showcase Your Experimentation Skills
Prepare examples of how you've built or extended experimentation infrastructure in previous roles. Highlight specific A/B tests you've conducted and the impact they had on user engagement or revenue. This will demonstrate your hands-on experience and ability to contribute to Synthesia's growth initiatives.
✨Understand the Product-Led Growth (PLG) Model
Familiarise yourself with PLG principles and be ready to discuss how you've applied them in your work. Think about how you can translate ambiguous business problems into clear technical solutions, as this aligns perfectly with what Synthesia is looking for.
✨Emphasise Collaboration
Since you'll be working closely with product managers and data analysts, prepare to share examples of successful collaborations from your past. Discuss how you prioritised tasks and made trade-offs between experimentation speed and long-term scalability. This will highlight your teamwork skills and strategic thinking.
