INTERNSHIP DETAILS
Working Student Frontend / Fullstack Software Engineering (m/f/d)
Company1KOMMA5˚
LocationHamburg
Work ModeOn Site
PostedDecember 17, 2025

Internship Information
Core Responsibilities
The working student will collaborate with product managers, designers, and developers to implement software solutions for sales teams. They will take ownership of features and work on improving customer satisfaction by reducing tech debt and enhancing software quality.
Internship Type
intern
Company Size
1095
Visa Sponsorship
No
Language
English
Working Hours
20 hours
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About The Company
1KOMMA5° wurde im Juli 2021 mit dem Ziel gegründet alle Gebäude zu elektrifizieren und CO2-neutral zu machen. Durch den Einsatz von Solaranlagen, Stromspeicher, Wärmepumpe, Klimaanlagen und Ladeinfrastruktur in Verbindung mit einer intelligenten Steuerung wird Wind- und Sonnenstrom automatisch dann genutzt wenn er günstig ist und am Markt verkauft wenn er teuer ist.
Das technologische Herzstück ist “Heartbeat AI”. Die KI-Software verbindet die Energiesysteme direkt mit der Strombörse und steuert jedes einzelne System nach individuellen Fahrplänen in Echtzeit. So wird immer der günstigste und sauberste Strom bereitgestellt, ob vom eigenen Dach oder vom Strommarkt.
Inzwischen steuert Heartbeat AI ca. 50.000 Energiesysteme und so über 450 Megawatt - das größte virtuelle Kraftwerke für Privatkunden in Europa mit einem Strompreis unter 10 Cent je kWh im Jahresdurchschnitt.
1KOMMA5° hat bereits über 120.000 Kunden und gilt laut EUPD Studie seit 2024 als europäischer Marktführer. Zurzeit betreibt 1KOMMA5° über 80 Standorte mit rund 2.500 Mitarbeitenden in sieben Ländern in Europa und Australien.
About the Role
<h2 id="1komma5°">1KOMMA5°</h2>
<p>We are looking for you to join our tech team in Berlin, Munich, or Hamburg. 1KOMMA5° is building Germany's largest one-stop-shop for sale, installation, and services related to solar, heat pumps, electricity, and charging infrastructure. And they are all connected! </p>
<p>Become a part of our mission and learn about our Product & Tech team!</p>
<h2 id="deine-position">Deine Position</h2>
<p>We seek a highly talented Frontend / Fullstack Software Engineering working student (m/f/d) to join our growing tech team. As part of a cross-functional team in the B2B domain, you will implement solutions for our sales teams to better support customers on their journey towards new energy. </p>
<p>Key responsibilities include:</p>
<ul>
<li>Work collaboratively with product managers, designers, and developers</li>
<li>Discover, evaluate, implement, and deploy software solutions</li>
<li>Take end to end ownership of features</li>
<li>Improve customer satisfaction by continuously reducing tech debt, improving the quality, and building software people love to use
Technologies you will work with include: </li>
<li>Web Frontend : React, TailwindCSS, TypeScript, Next.js, Vercel</li>
<li>Backend (if you want to go Fullstack) : TypeScript, Node.js, NestJS</li>
<li>Google Cloud Platform (Cloud Run, PubSub, CloudSQL, Firestore, BigQuery)</li>
<li>Datadog</li>
<li>Terraform</li>
<li>GitHub Actions</li>
</ul>
<h2 id="dein-profil">Dein Profil</h2>
<ul>
<li>You are enrolled at a German university for at least two more semesters, studying computer science or a comparable field, and willing to work 20 hours per week</li>
<li>You have experience writing reliable production frontend services with React, TypeScript, and Next.js - experience with Vercel and Node.js is a plus</li>
<li>You are passionate to write maintainable, documented, reusable, and testable code</li>
<li>You have a finger on the pulse of software engineering trends and are excited to learn industry best practices</li>
<li>You have an agile and result-oriented mindset, and you consider yourself a team player</li>
<li>You have very good written and spoken English skills - German is a big plus since we are working quite close to the customers</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 full-time 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>
</ul>
Key Skills
Frontend DevelopmentFullstack DevelopmentReactTypeScriptNext.jsNode.jsAgile MethodologiesSoftware Engineering TrendsTeam CollaborationCustomer SatisfactionCloud ComputingGitHub ActionsTerraformDatadogTech Debt ManagementDocumentation
Categories
TechnologySoftwareEnergyEnvironmental & Sustainability
Benefits
International TeamDynamic Work EnvironmentImpact on ClimateLearning OpportunitiesDirect Contact with Decision-MakersRemote WorkWork-Life BalanceEGYM Wellpass Benefits
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