Member of Technical Staff – Applied AI

vor 1 Tag

Zürich, Zürich, Schweiz Tzafon Vollzeit

Tzafon is a foundation model lab building scalable compute systems and advancing machine intelligence, with offices in San Francisco, Zurich & Tel Aviv. We've raised over $12m in funding to advance our mission of expanding the frontiers of machine intelligence.

We're a team of engineers and scientists with deep backgrounds in ML infrastructure & research. Founded by IOI and IMO medalists, PhDs, and alumni from leading tech companies, we train models and build infrastructure for swarms of agents to automate work across real-world environments.

You'll work between our product and post-training teams to ship Large Action Models that actually work. Build evals, benchmarks, and fine-tuning pipelines. Define what good model behavior means and make it happen at scale.

What you'll do

  • Build evaluation infrastructure for agent systems
  • Create benchmarks that measure real capability
  • Design data pipelines for behavioral data collection and analysis
  • Implement fine-tuning pipelines (wandb, distributed training infrastructure)
  • Work with post-training team on RLHF and behavioral optimization
  • Build tools for model introspection and capability mapping
  • Ship continuous evaluation systems that catch regressions before users do

We're looking for

  • Expert-level at Python and ML frameworks (PyTorch)
  • Deep experience with LLM fine-tuning and evaluation infrastructure
  • Track record of shipping ML systems to production
  • Strong opinions on what makes a good eval
  • Experience with wandb, MLflow, or similar experiment tracking

Preferred Experience

  • Built eval frameworks at AI labs or LLM companies
  • RLHF/Constitutional AI/DPO implementation experience
  • Published work on model evaluation or benchmarking
  • Contributions to open source ML infrastructure
  • Experience with multi-agent systems or tool-use models

Life at Tzafon

  • Full medical, dental, and vision coverage, plus 401(k) in the US
  • Office in SF, Zurich and Tel Aviv
  • Early-stage equity in a future-defining company

Visa sponsorship: We do sponsor visas However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this.

Compensation starts at $150k-$400k + equity package, depending on experience & location.

We also offer a referral bonus of $5k for referral of successful hires (send to ).

  • Member of Technical Staff

    Vor 5 Tagen

    Zürich, Zürich, Schweiz Microsoft Deutschland GmbH Vollzeit CHF 120'000 - CHF 180'000 pro Jahr

    Member of Technical Staff - Software Engineer Zürich, Switzerland Save Share job Date posted Oct 23, Job number Work site days / week in-office Travel % Role type Individual Contributor Profession Software Engineering Discipline Software Engineering Employment type Full-Time Overview Microsoft AI is looking for a Member of Technical Staff - Software...

  • Member of Technical Staff

    vor 1 Tag

    Zürich, Zürich, Schweiz Microsoft Vollzeit

    Overview Microsoft AI is looking for a Member of Technical Staff - Software Engineer to help build the next wave of capabilities of our personalized AI assistant, Copilot. We're looking for someone who will bring an abundance of positive energy, empathy, and kindness to the team every day, in addition to being highly effective. The right candidate enjoys...

  • Member of Technical Staff, AI Data

    vor 2 Wochen

    Zürich, Zürich, Schweiz Microsoft Vollzeit CHF 120'000 - CHF 180'000 pro Jahr

    Are passionate about the role of data in large-scale AI model training Will thrive in a highly collaborative, fast-paced environment Have a high degree of craftsmanship and pay close attention to details Demonstrate a proactive attitude and enthusiasm for exploring new methods and technologies Effectively manage multiple responsibilities and can adjust to...

  • Member of Technical Staff, AI Multimodal

    vor 2 Wochen

    Zürich, Zürich, Schweiz Microsoft Vollzeit CHF 120'000 - CHF 180'000 pro Jahr

    Help deliver one of the best foundational models in the world at Microsoft AI.At Microsoft AI, we are on a mission to train the world's most capable AI frontier models, pushing the boundaries of scale, performance and product deployment. The Multimodal team at Microsoft AI tackles some of the most challenging problems in deep learning at scale. As a team, we...

  • Member of Technical Staff

    Vor 7 Tagen

    Zürich, Zürich, Schweiz Microsoft Vollzeit $ 120'000 - $ 180'000 pro Jahr

    At Microsoft AI, we are on a mission to develop the most cutting-edge algorithms for post-training large language models (LLMs) and ship those models to millions of users using Copilot every day.    The AI Post-Training team at Microsoft AI is responsible for all aspects of post-training and improving our pre-trained models to advance the state-of-the-art...

  • Member of Technical Staff

    vor 2 Wochen

    Zürich, Zürich, Schweiz Microsoft Vollzeit CHF 120'000 - CHF 180'000 pro Jahr

    At Microsoft AI, we are on a mission to develop the most cutting-edge algorithms for post-training large language models (LLMs) and ship those models to millions of users using Copilot every day.The AI Post-Training team at Microsoft AI is responsible for all aspects of post-training and improving our pre-trained models to advance the state-of-the-art on a...

  • Member of the technical staff

    vor 2 Wochen

    Zürich, Zürich, Schweiz Jua Vollzeit CHF 80'000 - CHF 120'000 pro Jahr

    OverviewJua is building the most advanced Earth intelligence platform ever created: a universal physics simulator designed to turn the planet's raw complexity into decisive trading upside. Today, our technology delivers the world's most advanced weather models and analytics, giving energy companies and traders a significant edge: higher profits, smarter...

  • Member of the technical staff

    vor 2 Wochen

    Zürich, Zürich, Schweiz Jua Vollzeit CHF 80'000 - CHF 120'000 pro Jahr

    OverviewJua is building the most advanced Earth intelligence platform ever created: a universal physics simulator designed to turn the planet's raw complexity into decisive trading upside. Today, our technology delivers the world's most advanced weather models and analytics, giving energy companies and traders a significant edge: higher profits, smarter...

  • Member of Technical Staff

    Vor 7 Tagen

    Zürich, Zürich, Schweiz Jua Vollzeit CHF 120'000 - CHF 180'000 pro Jahr

    OverviewJua is building the most advanced Earth intelligence platform ever created: a universal physics simulator designed to turn the planet's raw complexity into decisive trading upside. Today, our technology delivers the world's most advanced weather models and analytics, giving energy companies and traders a significant edge: higher profits, smarter...

  • Member of Technical Staff

    Vor 7 Tagen

    Zürich, Zürich, Schweiz Jua Vollzeit CHF 120'000 - CHF 180'000 pro Jahr

    OverviewJua is building the most advanced Earth intelligence platform ever created: a universal physics simulator designed to turn the planet's raw complexity into decisive trading upside. Today, our technology delivers the world's most advanced weather models and analytics, giving energy companies and traders a significant edge: higher profits, smarter...