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Staff / Senior Staff Machine Learning Engineer, Inference - Switzerland

Join Inworld AI as a Staff/Principal Machine Learning Engineer to optimize and serve state-of-the-art voice models in a fully remote role.

Location
Switzerland
Compensation
Not disclosed
Level
staff
Type
full time · Remote

Posted by employer 6 months ago

First seen on Joblaze 2 months ago

Last verified on the company career page 1 day ago

Skills & Technologies

AI in the day-to-day

Our models power the largest consumer-facing AI applications, optimizing real-time inference and creating best-in-class APIs.

Requirements

Education
PhD

Not disclosed in this posting: compensation, years of experience, visa sponsorship.

Joblaze summary

In this role, the Staff/Principal Machine Learning Engineer at Inworld AI focuses on optimizing and deploying advanced voice models for real-time applications, ensuring high performance and reliability. Key skills include expertise in inference optimization, model acceleration, and proficiency in languages like C++ and Python, alongside experience with distributed systems. This position is ideal for seasoned engineers with a strong background in machine learning or systems programming who thrive in dynamic environments and enjoy tackling ambiguous challenges. Inworld AI fosters a culture of innovation, encouraging engineers to take ownership of their projects and prioritize impactful solutio

Joblaze insights

  • Listed about 2 months ago — first seen on Joblaze September 3, 2026. Last confirmed on Inworld AI's careers page November 2, 2026.

Quick facts

Is the Staff / Senior Staff Machine Learning Engineer, Inference - Switzerland role remote?
Yes — Inworld AI lists this as a fully remote position.
What's the tech stack?
Joblaze extracted these technologies from the posting: C++, CUDA, Kubernetes, Python, Ray, Rust.
What seniority level is this role?
Inworld AI targets staff-level candidates for this position.
Is this full-time or contract?
Full-time for this Staff / Senior Staff Machine Learning Engineer, Inference - Switzerland role at Inworld AI.

From the original posting

Who We're Looking For

A year ago, reliably working agentic systems and sub-second multimodal inference at scale barely existed. Nobody has a decade of experience here. So we're not screening for a resume template — we're looking for strong people from varied backgrounds who learn fast, thrive in ambiguity, and can show us what they've built, broken, and understood.

  • Inference Optimization. Deep understanding of modern serving frameworks and techniques like vLLM or TRT-LLM.

  • Model Acceleration. Hands-on experience with quantization, distillation, caching strategies , continuous batching, paged attention, and speculative decoding.

  • High-Performance Systems. Proficiency in C++, CUDA, Rust, or highly optimized Python. You know how to profile code and squeeze every ounce of performance out of NVIDIA GPUs.

  • Distributed Systems & Scaling. Experience with Kubernetes, Ray, custom load balancing, multi-GPU/multi-node inference, and reliably handling thousands of concurrent connections.

  • Public work. Non-trivial systems programming projects, open-source contributions to major inference engines, or deep-dive technical write-ups.

  • Full-cycle ownership. You can take a model from the research team, containerize it, optimize its serving, and ensure it runs reliably in production.

  • Background. PhD in CS, Physics, Math, or equivalent practical experience building backend or ML systems.

  • Professional fluency in English (written and spoken) is required, as you will be collaborating daily with our US-based leadership and engineering teams.

Who Thrives Here

  • You don’t need a roadmap to start walking; you’re comfortable picking a direction and building the map as you go.

  • You believe engineering isn't finished until it’s shipped and stable. You have a bias for impact over purely theoretical optimizations.

  • You don't just ship code; you obsess over the why. You’re the first to question an architecture if you think there’s a better way to solve the core latency or throughput problem.

  • You aren't satisfied with "the PM said so." You thrive on deep context and want to understand the fundamental logic behind every decision we make.

What Working Here Is Like

We hand you unclear problems and expect you to make them clear. We value engineers who say "I don't know yet" and then design the benchmark or prototype that finds out. We treat performance, latency, and reliability as first-class product features, not a box to check before launch. Impact comes before everything else, though we support sharing work and open-source contributions that move the field forward. Your work should be visible. Flat structure, fast iterations, minimal process theater.

Location & Employment

  • Location: remote within Switzerland

  • Employment type: Full-time, permanent employment

  • Hiring model: Employment via Employer of Record (EOR)

Candidates must already have the legal right to work in Switzerland, as visa sponsorship is not available for this role. For candidates interested in relocating to the San Francisco Bay Area in the future, full U.S. visa and relocation support may be available, subject to business needs and applicable legal and work authorization requirements.

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