synthesia.io

Synthesia is seeking a Machine Learning Engineer to build the AI engine for their Roleplay Sessions product. This product allows users to practice real conversations with AI avatars and receive instant feedback. The AI engine will be responsible for processing user input, scoring performance, generating feedback, and controlling avatar responses. This is an applied ML position focused on product development, requiring a blend of ML knowledge and strong software engineering skills for fast iteration and problem-solving.

$30k - $40k

Synthesia is seeking a Principal/Staff Software Engineer to work on core enterprise platform systems, focusing on services that ensure the platform is secure, reliable, and scalable for their largest customers. This role will contribute to a new suite of APIs designed to unlock their market-leading Avatar technology for external creative tools. As an AI-native company, Synthesia leverages advanced AI assistant tools to accelerate development and automate tasks. The engineer will own projects spanning months and multiple teams, requiring the ability to break down complex problems into deliverable steps. Engineers are empowered to influence product discussions and build with user and business needs in mind, with a strong emphasis on impact. Collaboration with product, security, legal, and infrastructure partners is essential, translating business and regulatory requirements into scalable technical solutions. Work will be evaluated through system health and reliability metrics, ensuring performance, reliability, and compliance.

$30k - $40k

Synthesia is seeking an Applied Research Engineer to join their Video team and contribute to building the next generation of production-grade foundation models for human-centric video generation. This role involves working at the intersection of large-scale generative modeling, distributed systems, and production engineering, with a focus on developing and optimizing video base models for realistic, controllable, and expressive synthetic humans. This is an applied research position with direct product impact, requiring the candidate to advance training recipes, scale distributed systems, improve evaluation frameworks, and optimize inference for real-world deployment. The work will directly influence models used by tens of thousands of businesses globally.

Synthesia, a leading AI video platform for business, is seeking a Senior Instructional Designer to join their Customer Education team. This role is pivotal in shaping how the world learns to use Synthesia's platform. You will own the end-to-end process of needs analysis and learning design, creating blueprints for learning experiences that address genuine learner needs. This position requires a collaborative individual who is comfortable facilitating live sessions, representing Synthesia at industry conferences, and has a deep understanding of AI-accelerated content production pipelines, moving beyond basic prompt engineering to building and refining agentic workflows. The ideal candidate will bring a rigorous, evidence-based approach to design and a passion for improving learning outcomes.

$115k - $135k

Synthesia is seeking an Engineer to join its ML Platform team. This team is responsible for building and operating the systems that enable researchers and product teams to train, serve, and deploy generative models efficiently and reliably. The role involves working on research infrastructure, production serving systems, internal tooling, and platform interfaces, with a growing focus on making these systems automation-friendly and agent-oriented. This is a hands-on individual contributor role with significant ownership, where you will help shape the evolution of the ML platform as it scales.

Synthesia is seeking a Staff Research Engineer to join their Voice team and contribute to the company's long-term vision of building the best human-interactive models. These advanced systems will go beyond simple conversation to perceive, respond to, and react to user actions and emotions in real-time. The role involves defining and driving this broader vision across teams, proposing ambitious research directions, and taking ownership of critical component design and implementation. You will collaborate closely with the voice lead, video teams, and other senior members to develop models that combine text, audio, and video for a seamless, interactive experience, moving beyond traditional turn-taking in speech models.

Synthesia, a leader in AI video for business, is seeking an Engineering Manager to lead its growing Application Security (AppSec) team. This role is crucial for securing the company's engineering and research organization as it scales, with a focus on building AI-native security tooling and embedding security throughout the development lifecycle. The ideal candidate will be a technically adept leader who can earn the trust of senior engineers, engage deeply in areas like threat modeling and agentic security tooling, and own the AppSec strategy. This position requires a hands-on approach to enable the team's success and foster a secure development environment within a rapidly growing AI-focused company.

Synthesia is seeking a Principal Research Engineer to lead the technical direction for offline video generation. This role involves owning the end-to-end process, from pre-training to post-training, and resolving the complexities that arise at scale. You will partner with research leadership to define long-term strategy, tackle challenging technical problems, and accelerate the delivery of research into production. The ideal candidate has hands-on experience training large generative models from scratch and is driven by a passion for pushing the boundaries of video generation and ensuring that work reaches users.

Synthesia is seeking a Principal Engineer to join their ML Platform team. This role focuses on building and operating the systems that enable researchers and product teams to train, serve, and deploy generative models efficiently and reliably. The team's work encompasses research infrastructure, production serving systems, internal tooling, and platform interfaces, with a growing emphasis on automation and agent-oriented workflows. This is a hands-on individual contributor position with significant ownership, where you will influence the evolution of the ML platform as it scales.

Synthesia is seeking a Senior Engineering Manager to lead a team focused on driving user acquisition, activation, and revenue growth. This role involves breaking down complex projects into manageable stages, making strategic trade-offs, and partnering closely with product and data teams to maximize business outcomes. You will be responsible for scaling the team by identifying skill gaps, attracting and retaining top talent, and fostering a collaborative, high-velocity culture. The Growth team operates at the intersection of product, engineering, and data, rapidly shipping experiments and iterating based on measurable results, directly impacting user journeys and business performance.

Synthesia is seeking a Principal Backend Engineer to focus on backend issues across all engineering teams, aiming to improve stability and standardize practices. This role involves owning projects that span quarters, requiring iterative delivery and validation. The engineer will evaluate their own work using data pipelines and frameworks to understand commercial impact and pivot as needed. A key aspect of the role is considering the long-term direction of engineering, anticipating future challenges, and developing capabilities to stay ahead. The engineer will work end-to-end, from the client application to the monolithic backend, and lead cross-team projects.

$12k - $18k

Synthesia is seeking a Staff Research Engineer to join their R&D Department, focusing on cutting-edge challenges in Generative AI, specifically avatar-centric interactive video diffusion models. This role offers the chance to work on applied research that directly impacts solutions used by thousands of businesses worldwide. You will be instrumental in shaping the future of AI video agents capable of human-like thinking, acting, and reacting. The team operates in a fast-paced environment, iterating frequently and building impactful models that ship to production.

Synthesia is seeking a Research Engineer to join their Data team, which manages the entire data lifecycle for researchers, from sourcing and processing to delivering datasets that power their AI models. This role sits at the intersection of applied research, data engineering, and ML infrastructure. You will be instrumental in building a world-class human-centric data lake by collaborating with model training teams, understanding their needs, and extracting new features and annotations to enhance datasets. The ideal candidate is passionate about improving model performance through high-quality data and will have the opportunity to enhance existing infrastructure and influence the team's long-term strategy.