Inworld AI

Staff / Principal Machine Learning Engineer, Serving - Switzerland

Machine Learning Engineer

PhD in CS, Physics, Math or equivalent practical ML systems experience; strong English communication; hands-on ML serving at scale.

Staff / Principal Machine Learning Engineer, Serving - UK

Inference optimization, model acceleration, high-performance systems, distributed scaling; backend/C++, CUDA, Rust, Python; PhD or equivalent experience.

Senior / Lead Machine Learning Engineer, Serving - Serbia

PhD in CS, Physics, Mathematics or equivalent practical experience; strong background in ML systems, serving architectures, and English proficiency.

Senior / Lead Machine Learning Engineer, Serving - Germany

PhD in CS, Physics, Math or equivalent practical experience; strong in inference optimization, model acceleration, high-performance systems, and distributed serving; professional English fluency.

Staff / Principal Machine Learning Engineer, Serving - USA

Inference optimization, model acceleration, high-performance systems, distributed systems, and production ML serving. PhD or equivalent experience.

Staff / Principal Research Scientist - UK

Research Scientist

PhD in ML/NLP or equivalent; experience with foundation models, evaluation, multimodal systems, and open-source contributions; ability to own research end-to-end.

Senior / Lead Research Scientist - Serbia 

Experience with foundation models, evaluation, frontier topics in ML/NLP, and strong publication or practical AI track record.

Senior / Lead Research Scientist - Germany

Experience with foundation models, evaluation, frontier topics; PhD in ML/NLP or equivalent practical work; ability to own full research cycles and publish/open-source work; strong English communication.

Staff / Principal Platform Engineer - USA

Platform Engineer

8-10 yrs software engineering; 3+ yrs infrastructure-as-code; Kubernetes; CI/CD with Terraform/Terragrunt, ArgoCD, GitHub Actions, Ansible; cloud providers (GCP/Azure/Oracle); backend languages Go/Python/Bash; SF Bay Area relocation on-site.

Staff / Principal AI Engineer  - Switzerland

AI Engineer

PhD or BA/BS with equivalent research/engineering experience; 5+ years in software and ML; experience in speech/video, NLP, or action planning; strong CS fundamentals; PyTorch; English proficiency.

GTM Lead - USA

GTM Lead

2-6 years in customer-facing roles with technical aptitude; strong AI/cloud/software background; able to manage external relationships; independent execution; effective communicator; bachelor's degree in a technical field.

Staff Backend Engineer - Canada

Staff Backend Engineer

Strong backend programming in statically typed languages; cloud-based services; relational DBs; caching/queues; collaboration and communication skills.

Staff Backend Engineer - USA

Experience building cloud-based backend services; proficient in Go, Kotlin, Java or Rust; scalable systems; relational databases; caching; messaging; data pipelines; strong communication.

Staff / Principal Machine Learning Engineer - USA

PhD or BA/BS with applicable research/engineering experience; 5+ years in software development and applied ML; NLP/ASR/planning experience; PyTorch proficiency.

Title	Location	Date
Staff / Principal Machine Learning Engineer, Serving - Switzerland Full Time Switzerland · Remote	Switzerland Remote	Apr 7, 2026
Staff / Principal Machine Learning Engineer, Serving - UK Full Time · $140K-$200K United Kingdom · Onsite	United Kingdom Onsite	Apr 7, 2026
Senior / Lead Machine Learning Engineer, Serving - Serbia Full Time Serbia · Remote	Serbia Remote	Apr 7, 2026
Senior / Lead Machine Learning Engineer, Serving - Germany Full Time Germany, Germany, Germany · Onsite	Germany, Germany, Germany Onsite	Apr 7, 2026
Staff / Principal Machine Learning Engineer, Serving - USA Full Time · $270K-$500K Mountain View, California, United States · Hybrid	Mountain View, California, United States Hybrid	Apr 7, 2026
Staff / Principal Research Scientist - UK Full Time United Kingdom · Hybrid	United Kingdom Hybrid	Mar 18, 2026
Senior / Lead Research Scientist - Serbia Full Time Serbia · Onsite	Serbia Onsite	Mar 18, 2026
Senior / Lead Research Scientist - Germany Full Time · 5+ YOE Germany · Remote	Germany Remote	Mar 18, 2026
Staff / Principal Platform Engineer - USA Full Time · $280K-$350K · 8+ YOE Mountain View or United States · Hybrid	Mountain View or United States Hybrid	Mar 17, 2026
Staff / Principal AI Engineer - Switzerland Full Time · 5+ YOE Switzerland · Remote	Switzerland Remote	Jan 17, 2026
GTM Lead - USA Full Time · $130K-$180K · 2+ YOE Mountain View, California, United States · Hybrid	Mountain View, California, United States Hybrid	Jan 16, 2026
Staff Backend Engineer - Canada Full Time · $150K-$240K Vancouver, British Columbia, Canada · Onsite	Vancouver, British Columbia, Canada Onsite	Apr 28, 2025
Staff Backend Engineer - USA Full Time · $180K-$280K Mountain View, California, United States · Hybrid	Mountain View, California, United States Hybrid	Apr 28, 2025
Staff / Principal Machine Learning Engineer - USA Full Time · $240K-$385K · 5+ YOE Mountain View, California, United States · Onsite	Mountain View, California, United States Onsite	Aug 16, 2023

Activities	Generative AI softwareVoice synthesis technologyVideo game toolsArtificial intelligence infrastructureInteractive character platforms
Headquarters	US
Industries	Artificial IntelligenceVideo Games
Name	Inworld AI
Employees	107
Type	Private
Tagline	Software for creating and deploying interactive artificial intelligence characters.
Founded	2,021
Website	inworld.ai
Latest Funding Round	Series A
Latest Funding Year	2,023
Latest Funding Amount	50,000,000
Latest Investors	Lightspeed Venture Partners

Inworld AI

About Inworld AI