Hover or tap a row for full statistics (EUR / month on this chart).
Salary analysis
Compared with the selected benchmark ("All roles in London, United Kingdom"), this listing's salary midpoint is about 94% lower. The offer sits below the benchmark range (€3,847–€15,737). The listed pay band (€459–€729) is tighter than the benchmark, which suggests lower salary variability. This benchmark is based on 10 comparable listings.
| Market | Lower bound (25th percentile) | Median | Upper bound (75th percentile) |
|---|---|---|---|
| All roles in London, United Kingdom | €3,847/per month | €7,124/per month | €15,737/per month |
Synthesia is the world’s leading AI video platform for business, used by over 90% of the Fortune 100. The opportunity describes a role for a Principal Research Engineer who owns the full technical stack for offline video generation, a senior individual contributor position with outsized scope and influence. You'll partner with research leadership and team leads to define long-term strategy, resolve the hardest cross-cutting technical problems, and raise the bar for how quickly research reaches product. The role emphasizes training large-scale video generation models from scratch, experience with post-training techniques, and cross-functional influence. You will be involved in shaping team structure and processes to enable high-velocity execution across research.
Job Details
Responsibilities
- Own the end-to-end technical direction for offline video generation, spanning pre-training and post-training, resolving the artificial boundary between those two stages in service of shipping better models faster.
- Partner with research leadership and team leads to define a unified long-term roadmap, broken into achievable objectives, and drive execution against it.
- Identify the most critical technical gaps across the video generation pipeline and jump in to unblock them, whether that means architectural decisions, training stability, post-training alignment, or cross-team coordination.
- Increase the velocity at which research ships to product: accelerate problem-solving, improve research-to-production handoffs, and increase visibility of research output in partnership with PMs.
- Coach and elevate more junior researchers and engineers toward senior technical thinking and execution.
- Help shape team structure and refine processes to enable high-velocity, cohesive execution across research.
Requirements
- A proven track record training large-scale video generation models from scratch, across multiple nodes, at the scale of millions of hours of data.
Skills & Technologies
| Location | Active listings |
|---|---|
| London, United Kingdom | 15 |
| Remote - Europe | 14 |
| Austin, United States | 1 |
| Remote - Global | 1 |
| Role type | Active listings |
|---|---|
| Product Designer | 3 |
| Strategic Customer Success Manager | 2 |
| Solutions Consultant | 1 |
| Engineering Manager | 1 |
| Staff Research Engineer | 1 |
| Solutions Architect | 1 |
| Frontend Engineer | 1 |
| Applied Research Engineer | 1 |
| Research Engineer in Data | 1 |
| Application Security Engineer | 1 |
| Senior Brand Designer | 1 |
| Product Manager | 1 |
| Role level | Active listings |
|---|---|
| Senior | 10 |
| Mid-Level | 2 |
| Manager | 2 |
| Expert | 1 |
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