תיאור תפקיד:
Senior Data Scientist / ML Engineer – LLMs and Decision Models | Maternity Leave Replacement | 50% Position
A leading high-tech company in Ramat Gan is looking for a Senior Data Scientist / ML Engineer to join its team for a maternity leave replacement (6–12 months). What you’ll do
Phase 1: Decision models in production Work with feature teams to identify tasks where decision models can replace expensive LLM calls. Start with use cases identified by the team, then find additional opportunities independently.
Build evaluation datasets and Python benchmarks, analyze failures, and establish quality criteria with feature owners.
Validate expected savings against production volumes and serving costs, and confirm that replacements maintain the quality required by each feature.
Coordinate implementation and rollout with data scientists, feature engineers, and the ML serving team, contributing primarily through evaluations and technical guidance.
Phase 2: Fine-tuned small models After establishing initial adoption, fine-tune small open models for specific tasks or broader Gong use cases.
Validate and roll them out the same way as in Phase 1.
Success means more features moved off expensive LLMs and real cost savings, with no drop in quality.
דרישות:
What you bring
Hands-on experience fine-tuning open language models, using methods such as supervised fine-tuning, distillation, or LoRA, with PyTorch and Hugging Face.
Strong Python skills and experience designing ML or LLM evaluations and analyzing quality and cost tradeoffs.
Experience collaborating with engineering teams to bring models into production, with an understanding of inference and serving constraints.
Ability to drive work across teams, communicate findings clearly, and identify worthwhile model replacement opportunities.
Nice to have
Experience with KServe, vLLM, or similar model serving infrastructure is a strong plus.
Experience with classification or decision models built on LLMs, including probability calibration.
The details
Contract for 6–12 months, about 50% time. Freelancers and agency contractors are both welcome.
We are also hiring for a Senior Applied AI Scientist role. If you fit both, we would love to hear from you.
היקף משרה:
משרה חלקית
קוד משרה:
245440
אזור:
מרכז - תל אביב, פתח תקווה, רמת גן וגבעתיים, בקעת אונו וגבעת שמואל, חולון ובת-ים, מודיעין, שוהם
שרון - חדרה וזכרון יעקב, נתניה ועמק חפר, רעננה, כפר סבא והוד השרון, ראש העין, הרצליה ורמת השרון
ירושלים - ירושלים, יהודה ושומרון, בית שמש
דרום - אשדוד, קרית גת, אשקלון, קרית מלאכי
השפלה - ראשון לציון ונס- ציונה, רמלה לוד, רחובות, יבנה
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