# Stella Ellervee — CV

Product & AI Transformation at Pactum AI. Tallinn, Estonia. stella@ellerv.ee

I like working on complexity and I like being on the frontline. Right now that means building the internal AI operating system at a company that sells autonomous negotiation to the Fortune 500 — teaching salespeople to use Claude, arguing about MCP permissions, and migrating a handbook nobody wanted to own. Before this I was a medical student, a QA engineer, a Scrum Master, a Viking re-enactor and a tutor. I'm hyped about the crossovers between healthcare, warfare, tech and education.

Also published as Stella-Maria Ellervee, Stella-Maria Kangur and Stella Kangur.

## Experience

### Product Specialist — AI Transformation — Pactum AI

*Jul 2025 — present · Tallinn, Estonia · Full-time*

Officially Product Specialist in the Engineering department; in practice an internal AI platform and enablement role. Pactum builds autonomous procurement negotiation software for Fortune 500 companies — I build the internal capability to use AI, rather than the customer-facing product.

- Lead the company-wide Claude Code rollout, including to non-developers — training, 1:1 setup sessions, and an internal skill distribution system.
- Designed the internal AI forum structure: retired two overlapping weekly syncs and replaced them with a biweekly AI Guild Meetup (technical) plus AI Fluency Lab (non-developer learning track).
- Own the Pactum Engineering Handbook migration to Confluence, including tooling that flags stale pages automatically instead of by nagging.
- Ship Claude Code skills to an internal marketplace — handbook lookup, red-flag review, and a meta-skill for sharing skills.
- Drive access and governance decisions: plan tiers, MCP permission scoping, connector risk review, token budget.
- Built and shipped a client-facing issue tracker feature to full adoption across a product line in six weeks.

### QA Engineer, Proxy Product Owner & Acting Scrum Master — Raintree Systems

*Apr 2023 — Jul 2025 · Remote · Full-time*

US healthcare EMR company. Three concurrent roles across the Custom Services, Communications and Clinical teams.

- Designed the company-wide test automation strategy, conventions and best practices; wrote and documented Cypress tests in JavaScript and TypeScript.
- Acted as Product Owner and Scrum Master for the team serving one of the largest therapy clinic chains in the US, including direct client calls.
- Analysed complex clinical workflows into user stories and acceptance criteria; ran refinement, retros and cross-team planning.
- Mentored new hires and ran product demos for stakeholders.

### Machine Learning Intern — HexTech Solutions

*Sep 2024 — Apr 2025 · Internship*

Drone detection research. RF signal processing, Fourier transforms, image annotation and YOLO model training, with practical field testing.

### Product Owner — Vaab

*Dec 2022 — Dec 2023*

Product ownership, business analysis and strategic communications, with design thinking in healthcare innovation.

### Private Teacher — Self-employed

*Jan 2016 — Nov 2023*

Started at 14. Mathematics, physics and chemistry, specialising in entrance exam preparation for Estonia's elite high schools — the point where an intervention still changes a trajectory.

### Research Assistant — University of Tartu

*Oct 2022 — Dec 2022 · Part-time*

Research on the influence of COVID-19 on the gut biome.

### Elected Senator, University Senate — University of Tartu

*Jan 2020 — Jun 2021*

Elected by peers to the university's highest academic decision-making body. Unpaid. Reviewed the University Statutes, teaching quality standards and development strategy; participated in budget decisions.

### Tour Guide — TYPA Print and Paper Museum

*Jul 2021 — Oct 2022 · Part-time*

Guided tours and workshops. Also 2019, in an earlier stint.

### Caregiver, Plastic and General Surgery Ward — Tartu University Hospital

*May 2020 — Sep 2020*

Ward care during the first year of the pandemic.

### Living History Educator — Mõõgavõitlusselts

*Jan 2018 — Dec 2019 · Part-time*

Historical European martial arts demonstrator and Viking age re-enactor.

## Education

### BSc, Information Technology — TalTech — Tallinn University of Technology

*Sep 2024 — Sep 2026*

Member of the Society of IT Students.

### Doctor of Medicine (incomplete) — University of Tartu

*2019 — 2024*

Left before completing. Senate member, medical students' association, Institute of Biomedicine representative, speaker at the Baltic Gynaecology Conference, gut biome research.

### Computer Science (first year) — University of Tartu

*2018 — 2019*

### High School Diploma, Engineering stream — Tallinna Reaalkool

*2015 — 2018*

Linguistics and Philosophy Olympiads, class president and student representative. Advanced mathematics, physics and biology.

## Skills

### What I'm good at

- AI enablement and adoption in organisations that resist it
- Training non-developers on developer tooling
- Product ownership and process definition
- QA methodology, manual and automated (Cypress, JS/TS)
- Scrum facilitation and agile ceremonies
- Translating between technical and non-technical worlds
- Stakeholder management and cross-functional communication

### Working knowledge

- Claude Code skills, MCP connectors, prompt and context engineering
- SQL, Looker, data modelling basics
- GCP, observability stacks, git and PR workflow
- Bash scripting
- Medicine, immunology, pharmacology
- OSINT

### Languages

- Estonian (native)
- English (fluent)

## Links

- [LinkedIn](https://www.linkedin.com/in/stella-kangur/)
- [Email](mailto:stella@ellerv.ee)

Estonian version: https://stella.ellerv.ee/et/cv.md