INTERNSHIP DETAILS
Working Student Data Science Forecasting (m/f/d)
Company1KOMMA5˚
LocationHamburg
Work ModeOn Site
PostedMay 22, 2026

Internship Information
Core Responsibilities
Support the development, training, and testing of time-series forecasting models for energy consumption and generation. Assist in building data pipelines and automating workflows using agentic AI to optimize energy management systems.
Internship Type
intern
Company Size
1228
Visa Sponsorship
No
Language
English
Working Hours
40 hours
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About The Company
1KOMMA5° wurde gegründet um Millionen Gebäude in Europa klimaneutral immer mit dem günstigsten Strom zu versorgen - ganz ohne fossile Energie.
Mit „Heartbeat AI“ betreibt 1KOMMA5° Europas größtes dezentrales Kraftwerk. Heartbeat AI steuert Elektroautos, Batterien, Wärmepumpen oder Klimaanlagen und handelt sie in Echtzeit an der Strombörse. Das System kauft Strom wenn er besonders günstig ist und verkauft Strom wenn er teuer ist. In Summe profitieren Nutzer von nahezu kostenlosem Strom.
Das Konzept gilt als günstigere Alternative zu fossilen, zentralen Kraftwerken und könnte laut einer Roland-Berger-Studie aus dem Jahr 2025 bis zu 255 Milliarden Euro an Stromkosten einsparen.
Inzwischen steuert „Heartbeat AI“ rund 50.000 Energiesysteme mit einer Leistung von 600 Megawatt, was etwa der Leistung eines modernen Gaskraftwerks entspricht.
1KOMMA5° ist aktuell in sieben Ländern aktiv und betreibt 80 Standorte, um Installation und Service als "One Stop Shop" für Kunden regional und in höchster Qualität sicherzustellen.
About the Role
<h2 id="1komma5°">1KOMMA5°</h2>
<p>At <strong>1KOMMA5°</strong>, we pursue a clear vision: <strong>Living on wind and sunlight forever for free</strong>. 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. </p>
<p><strong>Want to take responsibility and build solutions that truly matter? Apply now and help us shape the energy world of tomorrow.</strong> </p>
<p>Learn about our Product & Tech team!</p>
<h2 id="deine-position">Deine Position</h2>
<p>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).</p>
<p>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.</p>
<h2 id="key-responsibilities">Key Responsibilities</h2>
<ul>
<li>Time Series & ML Engineering: Support the team in building, improving, and retraining machine learning forecasting models</li>
<li>Production Operations: Actively assist in monitoring, updating, and troubleshooting forecasting models and pipelines operating in production environments</li>
<li>Data Pipelines & Cleansing: Help build and maintain robust data transformation pipelines using SQLMesh and BigQuery to pre-process large streams of data</li>
<li>Simulation & Validation: Use our internal simulation framework to backtest forecast models and analyze how forecast errors directly impact our high-level EMS optimization yield</li>
<li>Agentic AI & Workflow Automation: Assist in writing, structuring, and testing behaviors for autonomous AI agents to help automate workflows</li>
<li>Documentation & Team Sync: Help maintain clean, clear technical documentation in Notion and collaborate with Optimization and Data Engineers during sprint cycles</li>
</ul>
<h2 id="dein-profil">Dein Profil</h2>
<ul>
<li>Current Studies: Enrolled in a Bachelor’s or Master’s program in Data Science, Computer Science, Statistics, Mathematics, Physics, or an equivalent quantitative field</li>
<li>Python Foundations: Solid coding skills in Python and familiarity with core data science libraries (pandas, numpy, scikit-learn)</li>
<li>ML Domain Knowledge: Solid theoretical understanding of machine learning principles, statistical analysis, model architectures (e.g., regression, tree-based ensembles), and key evaluation metrics</li>
<li>Analytical Mindset: Enthusiastic about troubleshooting data quality bugs and validating model outcomes using quantitative metrics</li>
<li>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</li>
<li>Domain Interest: A genuine interest in renewable energy, battery storage systems, smart grids, or electricity markets</li>
</ul>
<h2 id="bonus-points-for">Bonus points for:</h2>
<ul>
<li>First touchpoints working with cloud-based infrastructure (e.g. GCP, AWS, Azure), especially containerized workflows and data warehouse solutions</li>
<li>SQL Literacy: Understanding of relational databases and confidence writing SQL queries for data extraction, manipulation, and aggregation.</li>
<li>hands-on experience using generative AI tools, prompt engineering, or configuring AI coding assistants</li>
<li>Initial experience with data pipeline tools like SQLMesh or dbt.</li>
<li>Basic understanding of visualization tools like Grafana or Looker.</li>
</ul>
<h2 id="benefits">Benefits</h2>
<ul>
<li>You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen</li>
<li>With your work, you accelerate the "energy transition" and hence have a direct impact on our climate</li>
<li>Work with and learn from other super-smart colleagues</li>
<li>You will enjoy direct contact with core decision-makers</li>
<li>You will enjoy the best chances of entering in one of Europe’s most thriving scaleups</li>
<li>You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich</li>
<li>Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass</li>
<li>Benefits and discounts are yours with Futurebens</li>
</ul>
Key Skills
PythonPandasNumpyScikit-learnSQLMachine LearningTime Series ForecastingBigQuerySQLMeshGCPAWSAzureGenerative AIPrompt EngineeringGrafanaLooker
Categories
Data & AnalyticsEnergyTechnologySoftwareEnvironmental & Sustainability
Benefits
International Dynamic TeamClimate ImpactMentorship From ExpertsDirect Contact With Decision MakersRemote Work OptionsEGYM WellpassFuturebens Discounts
Prep Tools
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Must-Have Skills for This Role
PythonPandasNumpyScikit-learnSQL
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0-2 Working Student Data Science Forecasting (m/f/d)
Interview Prep Plan
1
Week 1:Technical Foundations2
Week 2:Python3
Week 3:System DesignFREE
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