Level

ElevenLabs

Fullstack Engineer (Backend Leaning) - Flows

ElevenLabs is hiring a Fullstack Engineer (Backend Leaning) - Flows for a remote role open to applicants in United Kingdom. Level rates it ; you can apply on Level.

AI in this role

Build backend systems and flows for cutting-edge AI voice and chat agent platforms at ElevenLabs.

ai-researchfullstack-developmentbackendapis

About ElevenLabs

ElevenLabs is an AI research and product company transforming how we interact with technology.

We launched in January 2023 with the first human-like AI voice model. Today, we serve millions of users and thousands of businesses - from fast-growing startups to large enterprises like Deutsche Telekom and Meta. Our investors are some of the world's most prominent, including Andreessen Horowitz, ICONIQ Growth and Sequoia. We've raised $781M in funding and our last valuation was $22B - multiples of 11, always.

We have expanded from voice into three main platforms:

  • ElevenAgents enables businesses to deliver seamless and intelligent customer experiences, with the integrations, testing, monitoring, and reliability necessary to deploy voice and chat agents at scale.

  • ElevenCreative empowers creators and marketers to generate and edit speech, music, image, and video across 70+ languages.

  • ElevenAPI gives developers access to our leading AI audio foundational models.

Everything we do is the result of the creativity and commitment of our team - builders doing the best work of their lives. We are researchers, engineers, and operators. IOI medalists and ex-founders. If you want to work hard and create lasting positive impact, we want to hear from you.

How we work

  • High-velocity: Rapid experimentation, lean autonomous teams, and minimal bureaucracy.

  • Impact not job titles: We don’t have job titles. Instead, it’s about the impact you have. No task is above or beneath you.

  • AI first: We use AI to move faster with higher-quality results. We do this across the whole company—from engineering to growth to operations.

  • Excellence everywhere: Everything we do should match the quality of our AI models.

  • Global team: We prioritize your talent, not your location.

What we offer

  • Innovative culture: You’ll be part of a generational opportunity to define the trajectory of AI, surrounded by a team pushing the boundaries of what’s possible.

  • Growth paths: Joining ElevenLabs means joining a dynamic team with countless opportunities to drive impact - beyond your immediate role and responsibilities.

  • Learning & development: ElevenLabs proactively supports professional development through an annual discretionary stipend.

  • Social travel: We also provide an annual discretionary stipend to meet up with colleagues each year, however you choose.

  • Annual company offsite: Each year, we bring the entire team together in a new location - past offsites have included Croatia and Italy.

  • Co-working: If you’re not located near one of our main hubs, we offer a monthly co-working stipend.

About the role
Studio is where creators build and finish video on ElevenLabs, powered by our generative graph engine, Flows. You’ll own our “produce once, distribute everywhere” workflow. It takes a finished Studio project and runs it through our dubbing pipeline to produce it in many languages and aspect ratios, with auto-translated captions. Today that means duplicating and rebuilding projects by hand.
This work is entirely greenfield: the specs aren’t written yet. You’ll shape them through written proposals (RFCs), pressure-test data structures with the team lead, and carry the project from first draft to launch.
You’re a strong backend generalist who is good with complex data structures and has the product instincts to decide what’s worth building.

Requirements

  • Strong backend generalist who has designed and shipped complex, data-heavy systems end to end.

  • Comfortable with enterprise-grade concerns such as usage reporting and accounts.

  • Evidence of product ownership: side projects, open source, or work in a product-facing context.

  • Has taken projects from inception to launch with little hand-holding.

Bonus: experience with media or video-processing pipelines (helpful, not required)

We are an equal opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability or other legally protected statuses.

How we rate this

Fullstack Engineer (Backend Leaning) - Flows at ElevenLabs rates 85 out of 100 for how much of the daily work is AI. That makes it Builds AI (AI Level 4 of 4). The level is about AI in the job, not seniority.

Classification

Builds AI. The job is building AI systems.

  1. ●●●● Builds AI80 to 100
  2. ●●●○ Works on AI60 to 79
  3. ●●○○ Uses AI40 to 59
  4. ●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Open the description and count.

Prepare for this job

A free preview built only from this posting: what it asks for, what you could be asked in an interview, and how to adjust your resume.

Skills and AI tools this role asks for

AI ResearchFullstack DevelopmentBackendApis

Questions you could be asked

  1. Tell me about a research question you investigated. What did you find?
  2. Tell me about a project where fullstack development was part of your work. What did you do?
  3. Tell me about a project where backend was part of your work. What did you do?
  4. Tell me about a project where apis was part of your work. What did you do?
  5. How would you decide a model or AI system is ready to ship?

Adapt your resume

  • List these exact terms on your resume: AI Research, Fullstack Development, Backend, and Apis. An applicant tracking system matches the wording, not the idea.
  • Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
  • Lead with what you built, trained or shipped. This role is judged on the AI system itself, not the tools around it.

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