Johannes Janousek
johannes.janousek@gmail.com | +43 6645457202 | Vienna
linkedin.com/in/j-janousek | github.com/janousek | johannesjanousek.xyz
Experience
Penxion
Jan 2024 - Dec 2025
Technical Founder
Berlin
- Built a platform helping seniors and their caretakers with care related tasks in
Germany.
- Developed AI-driven web crawlers to compile Germany's largest dataset on senior
homes, utilizing multi-modal LLMs to analyze images and extract features.
- Engineered data pipelines using Airflow on AWS to process, clean (using Pandas,
NumPy), and store crawled and application data across S3, RDS (MySQL, PostgreSQL),
and MongoDB.
- Created backend tools (using Python, JS, Flask, FastAPI) enabling AI components to
generate custom care home reports.
- Implemented functionality to assist seniors in filling out crucial forms for
Pflegegrad assistance.
- Integrated frontend and backend systems via webhooks connected to CRM and EC2
instances for triggering automated processes.
Massar Capital (HFM US
Performance Award 2023)
Aug 2022 - Jan 2024
Data Scientist
Vienna
- First hire in newly opened Vienna office; worked directly with CIO across research,
data infrastructure, and trading analytics.
- Developed a predictive model optimizing the roll dates for >100 illiquid commodity
futures, saving $10 million annually in slippage costs.
- Researched and developed models to predict surprises in economic releases.
- Engineered systems for acquiring, processing, and validating large datasets from
exchanges, vendors, Bloomberg Terminal and SQL databases (MySQL, MSSQL) to feed
models and analytics.
- Acquired and prepared alternative datasets, including satellite imagery for oil
inventory analysis, to support trading strategies.
- Built and maintained web crawlers and monitoring systems with alerts for
time-sensitive trading strategies.
- Designed and implemented an interactive analytics tool (Dash, Plotly) enabling the
CIO to analyze seasonality trends and translate research into trades.
WeMine
Dec 2019 - Jul 2022
Machine Learning Engineer
Hong Kong
- Developed and deployed a multi-task deep learning recommendation system (TensorFlow,
PyTorch) that incorporated user context to drive engagement.
- Engineered scalable, low-latency prediction services on Azure using Docker and
Kubernetes (AKS).
- Designed and automated end-to-end ML pipelines with Airflow, orchestrating data
ingestion, preprocessing, training, and deployment.
- Systematized ML experimentation and model versioning using MLflow and CometML.
- Built custom Docker images to minimize image size and significantly lower cloud
hosting costs.
ECO Capex
Jan 2016 - Sep 2017
Quantitative Analyst
London
- Created a credit risk analysis tool in Python and built predictive models to
forecast trade success and revenue for a B2B digital marketplace.
- Designed and managed a currency basket based on volatility analysis, presenting key
performance indicators and analytical outputs to the C-suite using Tableau.
Projects
Task Adaptive LoRAs
Instant Transformer Adaptation with DSPy |
GitHub
- Re-implemented SakanaAI's Text-to-LoRA research paper with DSPy, generating
task-specific adapters in one forward pass and optimizing prompts for the hyper
network.
Education
King's College London
Sep 2018 - Sep 2019
MS Data Science and Statistics
Distinction
- Dissertation: Using convolutional neural networks to classify
brain-computer-interface EEG data of epilepsy patients.
- Modules: Pattern Recognition, Deep Learning and Neural-Networks, Machine Learning,
Artificial Intelligence, Databases, Data Warehousing, Statistics.
General Assembly London
Oct 2017 - Feb 2018
Data Science Course
Regent's University London
Feb 2013 - Jan 2016
BS Finance
Distinction
- Dissertation: Valuation Model for Young Tech Companies.
Other
- Nationality: Austria
- Languages: German, English
- Interests: Reading, Hiking, Diving, Skiing, Running