Marek S, Head of Artificial Intelligence at Ascertain

Marek S

Head of Artificial Intelligence at Ascertain | New York, New York, United States

Profile last verified August 2026
Venture Capital & Private Equity Verified Profile New York, New York, United States University of Cambridge
Verified

Work Email

***@orchestraonco.com

Last verified September 2026

Personal Email

***@gmail.com

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Phone Number

+44*****

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Marek S Socials
Marek S Work Experience

Operating Partner at Aegis Ventures in October 2021 - Present

Head of Artificial Intelligence at Ascertain in March 2022 - Present

Chief Technology Officer at Transformative in December 2016 - October 2021

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Entrepreneur-in-Residence at Entrepreneur First in September 2016 - August 2017

Researcher at CERN in October 2012 - September 2016

Supervisor at University of Cambridge in January 2013 - April 2016

Marie Curie Fellow at Lund University in September 2014 - December 2014

Marek S Education

University of Cambridge, Doctor of Philosophy (Ph.D.)

The University of Edinburgh, BSc

University of Washington

Marek S Skills
Entrepreneurship Predictive Modeling Infrastructure as code (IaC) Generative AI Artificial Intelligence Machine Learning Data Science Time Series Analysis MLflow Spark
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Delta Lake Azure Databricks MLOps Azure AI Explainability and Interpretability Vector Databases Large Language Models (LLM) Analysis Google Cloud Platform (GCP) Amazon Web Services (AWS) Data Warehousing and Deployment Cloud Computing Transformers Retrieval Augmented Generation Semantic Search Natural Language Processing (NLP) HuggingFace LangChain Prompt Engineering Research Statistics Scientific Computing Data Analysis Public Speaking Science Science Communication C++ Software Development Leadership Python Large-scale Data Analysis Algorithms Artificial Neural Networks Monte Carlo Simulation
About Marek S’s Current Company
Ascertain

Ascertain an agentic AI platform that delivers end-to-end automation across care management and revenue cycle workflows. Unlike static RPA or point solutions, Ascertain ingests structured and unstructured data, adapts in real time to new rules, and operates with explainable, auditable guardrails. Health systems, providers and payers achieve measurable ROI in months, not years — from faster authorizations to reduced cancellations and improved throughput.

Discover more about Ascertain
Marek S’s Colleagues
Christine Daley

Christine Daley

London, England, United Kingdom

Product Design @ Metaview

Product Designer at Metaview
(February 2024 – Present)

Josh Ettwein

Josh Ettwein

Laguna Niguel, California, United States

Vice President of Engineering at Rippl Care

Vice President of Engineering at Rippl Care
(February 2023 – Present)

Eric Smith

Eric Smith

Renton, Washington, United States

Build trust, create clarity, execute with integrity: Good thinking takes time.

Senior Program Manager at Rippl Care
(December 2022 – Present)

AF

Ali Farzad

New York, New York, United States

BD & Partnerships Lead at Ascertain | Ex-McKinsey

Business Development and Partnerships Lead at Ascertain
(January 2023 – Present)

Gilvanei Gregorio

Gilvanei Gregorio

Florianópolis, Santa Catarina, Brazil

Senior Backend Engineer | AI Engineer | Python, FastAPI, Django, PostgreSQL, Redis, RabbitMQ, Docker, Kubernetes, AWS, GCP, Git, GitHub Actions, OpenAI, LangChain, LLM

Senior Software Engineer at Ascertain
(Jan 2026 – Present)

Larissa Liburd

Larissa Liburd

Brooklyn, New York, United States

AI Deployments, Strategic Customer Programs, Cloud Partnerships | Ex-BCG, AWS

GTM & partnerships operator at an early-stage AI company deploying agentic workflows in regulated environments. Owning the full arc from executive alignment to production, converting pilots into multi-year AI adoption roadmaps as the C-suite's commercial counterpart. Building ...

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Frequently asked questions about Marek S

What is Marek S email address?

Email Marek S at [email protected] and [email protected]. This email is the most updated Marek S's email found in 2026.

What is Marek S phone number?

Marek S phone number is +447883518854 and 3479341575.

How to contact Marek S?

To contact Marek S send an email to [email protected] or [email protected]. If you want to call Marek S try calling on +447883518854 and 3479341575.

What company does Marek S work for?

Marek S works for Ascertain.

What is Marek S's role at Ascertain?

Marek S is Head of Artificial Intelligence

What industry does Marek S work in?

Marek S works in the Venture Capital & Private Equity industry.

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