Gemeinsam. Digital. Erfolgreich.

About the Position

At thermondo, our mission is to decarbonize every home, and technology is our primary lever for change. We are disrupting a massive industry bogged down by legacy systems and manual work. This is where you come in. We build the intelligent software and automation that gives us a decisive edge, allowing us to operate at a scale and efficiency our competitors can't match. We are looking for a skilled and motivated Mobile Engineer (f/m/d) to contribute directly to the development of our native mobile applications, with a strong focus on Android, and multi-platform solutions. This role is ideal for a hands-on engineer who is eager to grow their technical scope, take ownership of software development, and contribute to both mobile and adjacent full-stack systems.

Responsibilities

• Lead Development of Native Mobile Features. You will architect, develop, test, and maintain high-quality features for our native Android/iOS applications (Kotlin Multiplatform Mobile), focusing on efficient UI implementation, state management, and robust data integration.
• Drive Mobile Architecture. You will design and implement technical architectures, focusing on best practices for performance tuning, offline/online capabilities, and stability in our mobile applications.
• Lead Integration Efforts. You will collaborate closely with backend and platform teams to ensure reliable, scalable integration of mobile features and complex API interactions.
• Take End-to-End Ownership. You will take full ownership of large-scale projects and epics from definition to deployment, translating complex business requirements into robust technical implementation plans.
• Spearhead AI Implementation. You will design, implement, and support scalable patterns for integrating pre-defined LLM services and AI-native features into the mobile application codebase.
• Elevate Development Practice. You will champion the improvement of mobile development workflows, lead code reviews, mentor junior and mid-level engineers, and raise the bar for engineering excellence across the team.

Requirements

• Experienced: You have 5-8+ years of hands-on experience in native mobile development within a fast-paced, high-scale product environment.
• Mobile and Growth Mindset. You have expert-level proficiency in native mobile development and are eager to apply architectural thinking as a versatile full-stack contributor.
  • Deeply experienced in native Android development (Kotlin) and modern Android architecture.
  • Experience with, or a strong ability to rapidly master and guide, our iOS application and Kotlin Multiplatform Mobile (KMM) integrations.
  • Expert at designing robust API interactions, optimizing system data flows, and handling complex asynchronous operations.
  • Python knowledge is a strong bonus and an asset for contributing to our internal systems.
• Autonomous & Driven: You are capable of managing complex technical roadmaps, prioritizing effectively, and driving implementation independently while providing technical leadership to the team.
• Pragmatic: You focus on delivering reliable, maintainable solutions and know when to leverage existing technology versus advocating for new paradigms.
• Strong Collaborator: You communicate technical challenges clearly to both technical and non-technical stakeholders and drive effective technical documentation.

Nice to Have

• Production AI: Familiarity with concepts like prompt engineering.
• Mobile DevOps: Hands-on experience improving CI/CD pipelines, automated testing, and build/release processes for mobile apps.
• Event-Driven Systems: Experience working with asynchronous patterns and message queues (like Kafka or SQS/SNS) for reliable data exchange with mobile clients.
• Legacy Migration: Experience contributing to the modernization or refactoring of existing application codebases.
• A passion for climate tech. You're motivated by our mission to decarbonize homes and are excited to apply your skills to a problem that matters.

We Offer

• In this role, you can expect an attractive compensation package starting from €70.000.
• Join a team of Product Managers, Software Engineers, Designers, Data and Salesforce people who are excellent in their craft and are happy to share their knowledge and help you grow alongside them.
• Our team is using the latest frameworks and is working with a modern tech stack to build powerful products for our customers, craftspeople, and internal teams.
• Boost your skills with a dedicated annual learning budget to spend on conferences, courses, or books.
• Choose your own AI coding companion – we provide you with the license for the AI model or assistant of your choice.
• We offer a challenge with purpose - the better our tech, the more people will live climate-neutral and the better the world becomes for future generations.
• We offer a fantastic culture in the tech team and beyond:
  • Modern office in the heart of Berlin.
  • Work from home - up to 3 days a week.
  • You receive an Urban Sports Club membership & nilo.health membership.
  • You can lease a job bike or bring your dog one day/week.
  • Corporate Benefits at more than 100 partners.
  • 20% employer contribution to your pension and disability insurance.

About the Company

Every application is welcome here - regardless of gender, nationality, ethnic and social background, religion, ideology, disability, age, sexual orientation, or identity. We are convinced that everyone is valuable and deserves a fair chance.

Software has always been part of thermondo’s DNA. We have been the first to digitize trade a decade ago. Today, our proprietary software enables 800 thermondinos to scale the heating transition in Germany. But we want more. We want to enable fully digitized and smooth customer journey ensuring that all processes are coming together: commercial funnel, procurement, product, supply chain, project management, finance, dispatch, HR planning, as well as customer-facing offerings for maintenance and home energy management.

Our product & tech teams in Xberg - the heart of Berlin - are a highly diverse and multicultural bunch. They make sure that we can make a difference and scale the energy transition in Germany and work closely together with all departments.

Join our product & tech teams and pave the way for climate-neutral living.

Application Process

• An initial interview with your Talent Acquisition partner, Alex.
• If we are both on the positive side, you will talk to our Head of Engineering, Christena.
• After this stage, you will undergo some technical assessments.
• Then, you will have the opportunity to meet with your to-be teammates.
• Finally, Become a thermondino!

• Before inviting you to an initial interview, we use an AI-supported tool that helps our recruiting team with the initial screening and provides additional insights into the requirements of the respective position. The decision on how to proceed with your application is always made by our recruiters and the responsible hiring managers.
• The specific salary level is determined during the recruitment process and depends on your experience, qualifications, and the scope of responsibility associated with the position.

Gute Gründe für thermondo

Festanstellung und unbefristete Arbeitsverträge

Wir stellen alle unsere Mitarbeiter in Festanstellung an und arbeiten mit unbefristeten Arbeitsverträgen.

Modernes und nachhaltiges Büro in Kreuzberg

In unserem neuen Büro am Moritzplatz haben wir viel Raum für jede Arbeitsweise.

Ob in unserer großen Community Küche, auf der Dachterasse mit Blick auf den Fernsehturm, oder in unseren lichtdurchfluteten Hot Desk Areas. Hier kannst du dich frei entfalten und findest die Atmosphäre, die du zum Arbeiten brauchst.

Getränke, Fair Trade Kaffee und das BBQ nach dem Feierabend gehören natürlich auch dazu.

Mobiles Arbeiten

An bis zu drei Tagen in der Woche können unsere Mitarbeiter, in Absprache mit ihren Kollegen und Vorgesetzten, von zu Hause oder einem anderen ruhigen Ort aus arbeiten.

Team- und Sportevents

Ob Beachvolleyball, Tischtennis, Radfahren, Klettern oder Joggen. Sportbegeisterte finden bei uns mit Sicherheit Peers, um sich nach der Arbeit auszupowern.
Ergänzend dazu finden sowohl im großen und im kleinen Rahmen regelmäßige Events, wie unsere legendäre Weihnachtsfeier, aber auch einfache Grill- oder Barabende statt.

Gestaltungs- und Entwicklungsmöglichkeiten

Wir kreieren echte Karrieren und ermöglichen Dir eine steile Entwicklung innerhalb von thermondo. Nicht Deine Herkunft entscheidet über Deine Entwicklung, sondern Du nimmst das Steuer selbst in die Hand.

Dein Beitrag zur Energiewende

Mit Deiner Arbeit leistest Du einen Beitrag zur Energiewende. So macht Deine Arbeit nicht nur Spaß, sondern bewirkt auch etwas.

Das ist genau die Herausforderung, nach der Du suchst? Wir freuen uns darauf, Dich kennenzulernen!

Jetzt bewerben

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Die Kultur bei Thermondo

Mobile Engineer (f/m/d)

• Berlin (Zentrale)
• Festanstellung
• Vollzeit
• 30 Tage

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