Strategy · Finance · Operations · Innsbruck

Finance & operations
that ships.

I model the business and build the systems that run it. Financial planning, fundraising and investor materials, then the dashboards, tools and automations behind them. Most finance people stop at the spreadsheet. I ship the software too.

Get in touch See my work
Open to full-time roles and select freelance mandates
Marius StemmerMS

Marius Stemmer

Strategy, Finance & Operations
NowPMO & Controlling · Accenture
RecentFinance & Ops · Series A biotech
EdgeModels it, then builds it
BasedInnsbruck, Austria
LanguagesGerman · English · Dutch
Background
AccentureECB & OeNB stakeholdersSeries A fundraisingPMI CAPMPower BINext.js + Supabase
What I do

Six things I get hired for.

The same skill set works full-time inside a team or as a freelance mandate. The through-line: turn ambiguous business problems into clear models, then into working systems.

01

Financial modeling & planning

Driver-based models, budgets, forecasts and scenario analysis. P&L through to cash and runway, built to survive diligence.

02

Fundraising & investor materials

Series A model, cap table, data room, deck and board reporting. The full pack investors actually read.

03

KPIs & BI dashboards

Performance tracking that turns messy data into decisions. Power BI, plus custom live dashboards where a spreadsheet is not enough.

04

Ops & process automation

Design the process, then automate it. Scalable systems, structures and workflows that a growing team can actually run.

05

BD & commercial

Partnerships, outreach pipelines and commercial strategy, wired into the same systems as the numbers behind them.

06

Full-stack internal tools

When off-the-shelf will not do, I build it: Next.js, Supabase, Python. Investor portals, CRMs, monitoring tools, shipped to production.

Proof, not claims

A financial model you can play with.

This is the point. I do not just build the model, I ship the interface on top of it. Drag a driver or switch the case, and the whole projection recomputes live. Same engine that runs the full data room below.

Series A model · live
drag a driver · everything recomputes
Revenue 2032
€118.6M
EBITDA 2032
€89.7M
Break-even
2029
Product Platform €M · 2026–2032
Built for Senara's Series A, shown here on invented figures rather than real company data. The full build carries ten linked views and drives P&L, cash and runway together.
Selected work

Strategy to shipped systems, for Senara.

Senara GmbH, a German cellular-agriculture biotech, Series A. I built the financial model and the raise materials, then the internal software to run them. Everything below is live and clickable.

Flagship · investor data room

A live Series A investor portal

Replaced the emailed deck with an invite-only data room: story tier, confidential financials, and the full model made interactive with base, upside and downside scenarios that recompute the whole chain through to cash.

Financial modelingNext.jsReactRecharts
Open the portal → Open the deck →
Market intelligence

Competitor & investor radar

An internal tool tracking competition, market, grants, investors and events, plus the outreach pipeline, in one live view instead of a spreadsheet nobody updated.

OpsData pipelinesNext.js
Open the radar →
Finance

The ten-year model & raise pack

Driver-based P&L from customers and capacity through to cash and runway, reconciled to the euro, with the cap table, use-of-funds and the Series A deck built on top.

ModelingFundraisingScenario analysis
See the live model ↑
These demos are a showcase, not real Senara data. To protect the company's confidential figures, the live versions run on fully invented numbers under a stand-in name (NOVAKERN). The systems, the structure and the methods are exactly what I built for Senara. The data is not theirs.
Experience

Where I have done this.

Jan 2026 — Jul 2026

Finance & Business Operations

Senara GmbH · cellular-agriculture Series A biotech · freelance
  • Financial model, forecast and scenario planning for a pre-commercial deep-tech startup.
  • Investor reporting and a full Series A data room.
  • KPI dashboards and market-intelligence tooling (see selected work).
Feb 2025 — today
part-time

PMO & Controlling Lead

Accenture · Innsbruck & Vienna
  • Account PMO for a public-sector client.
  • Budgeting, controlling and portfolio reporting.
  • Power BI and automation for decision support.
Mar 2023 — Feb 2025

Data & IT Project Manager

Accenture · Innsbruck
  • Regulatory reporting in the Finance & Risk domain for bank clients, with stakeholders including the ECB and OeNB.
  • Built reporting workflows in Power BI, Jira and Excel.
  • Bridged technical teams and business units.
Jul 2021 — Mar 2023

Freelance · Strategy & Project Management

Independent · Innsbruck
  • Digital strategy and IT project delivery.
  • Consulting for health NGOs and startups.
2018 — 2021

Earlier

Leiden University & startup incubation
  • Startup incubation intern at PLNT Leiden: advisory, and investor and stakeholder materials.
  • Research assistant at Leiden University (The Hague): a data project on informed citizenship.
  • Co-founded a social-impact startup on labour-market integration.
The toolkit

How I work, and with what.

Comfortable from a board-ready model to a production deploy. That range is the point: I can own a problem end to end rather than handing it off halfway.

Skills
Financial modellingBudgeting & forecastingControllingFundraisingInvestor reportingPMOKPI & BIProcess automationBD & commercial
Tools
ExcelPower BISPSSJiraConfluenceNotionHubSpotAirtableNext.jsSupabasePython
Education
BSc International RelationsLeiden · 2018–2021
Minor, Entrepreneurship & Dev.TU Delft · 2020
AbiturKolleg St. Blasien · 2016
At a glance
BasedInnsbruck, Austria
LanguagesGerman · English · Dutch
CertificationPMI CAPM
AvailabilityFull-time & freelance
Work with me

Two ways to work together.

Whether you are hiring or need a specific thing built, the strength is the same: finance and operations, plus the ability to ship the systems behind them.

Full-time
Finance, strategy & operations roles

Finance & growth, strategy, ops or founder-associate roles at ambitious startups. Ownership from day one, ideally where building systems is part of the job.

Freelance
Fixed-scope mandates

A financial model, an investor or board reporting pack, a KPI cockpit, or a bespoke internal tool. Scoped to a clear deliverable, not a day rate.

Email me LinkedIn
Email marius.stemmer@proton.me LinkedIn /in/marius-stemmer Innsbruck, Austria