Working Student Data Science Forecasting (m/f/d)

1KOMMA5°

At 1KOMMA5°, we pursue a clear vision: Living on wind and sunlight forever for free. To make this a reality, we are building the energy system of the future with Heartbeat AI. Want to be part of it?We bring together regional craftsmanship and scalable software: We don't think of solar, batteries, heat pumps, and e-mobility as isolated components, but control them as an intelligent, integrated overall system in our virtual power plant. Directly connected to the electricity market – in real time, fully automated. This way, energy is used when it is available from renewables and particularly cost-effective. By 2030, our goal is to transition 1.5 million households to renewable energies. Over 3,000 people are working towards this every day, at more than 80 locations worldwide, from Finland to Australia.

Want to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow.

Learn more about our Product & Tech team!

Your mission

As a Werkstudent or Intern in Data Science Forecasting, you will join our Team to help shape the future of decentralized Energy Management Systems (EMS). Your core mission will be supporting the development, training, and testing of our time-series forecasting models (PV generation, household load, heat pump consumption, and EV charging).

This role offers a unique learning ground: you will get hands-on experience working on data and ML pipelines and projects running in live production. You will join us during a period of rapid innovation, gaining the opportunity to actively contribute to our agentic AI workflows aimed at accelerating engineering productivity. This position is ideal for a student who wants to bridge the gap between academic data science theory and real-world, cloud-scale clean energy operations.

Key Responsibilities

• Time Series & ML Engineering: Support the team in building, improving, and retraining machine learning forecasting models
• Production Operations: Actively assist in monitoring, updating, and troubleshooting forecasting models and pipelines operating in production environments
• Data Pipelines & Cleansing: Help build and maintain robust data transformation pipelines using SQLMesh and BigQuery to pre-process large streams of data
• Simulation & Validation: Use our internal simulation framework to backtest forecast models and analyze how forecast errors directly impact our high-level EMS optimization yield
• Agentic AI & Workflow Automation: Assist in writing, structuring, and testing behaviors for autonomous AI agents to help automate workflows
• Documentation & Team Sync: Help maintain clean, clear technical documentation in Notion and collaborate with Optimization and Data Engineers during sprint cycles
  
  

Your profile

• Current Studies: Enrolled in a Bachelor’s or Master’s program in Data Science, Computer Science, Statistics, Mathematics, Physics, or an equivalent quantitative field
• Python Foundations: Solid coding skills in Python and familiarity with core data science libraries (pandas, numpy, scikit-learn)
• ML Domain Knowledge: Solid theoretical understanding of machine learning principles, statistical analysis, model architectures (e.g., regression, tree-based ensembles), and key evaluation metrics
• Analytical Mindset: Enthusiastic about troubleshooting data quality bugs and validating model outcomes using quantitative metrics
• Team & Agile Mindset: You have a team-oriented mindset, enjoy working in agile environments (such as sprints), and deeply value close, transparent collaboration with your teammates
• Domain Interest: A genuine interest in renewable energy, battery storage systems, smart grids, or electricity markets
  
  

Bonus points for:

• First touchpoints working with cloud-based infrastructure (e.g. GCP, AWS, Azure), especially containerized workflows and data warehouse solutions
• SQL Literacy: Understanding of relational databases and confidence writing SQL queries for data extraction, manipulation, and aggregation.
• hands-on experience using generative AI tools, prompt engineering, or configuring AI coding assistants
• Initial experience with data pipeline tools like SQLMesh or dbt.
• Basic understanding of visualization tools like Grafana or Looker.
  
  

Benefits

• You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen
• With your work, you accelerate the "energy transition" and hence have a direct impact on our climate
• Work with and learn from other super-smart colleagues
• You will enjoy direct contact with core decision-makers
• You will enjoy the best chances of entering in one of Europe’s most thriving scaleups
• You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich
• Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass
• Benefits and discounts are yours with Futurebens
  
  

About Us

"At 1KOMMA5°, our vision is to accelerate CO2 neutral life for all! We created an easy one-stop-shop to buy and install solar, charging stations and heat pumps, with the purpose of liberating all European homes from the shackles of fossil fuels. With Heartbeat, we make clean energy smarter. Connecting our customers into one powerful clean energy operating system to enable flexible tariffs and to ultimately follow the rhythm of wind and sun!" - Philipp Schröder (CEO 1KOMMA5°)