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Senior Backend Software Engineer in Berlin Job Opening In Berlin – Now Hiring Wallround GmbH


Job description

Deine Mission

Wir stellen jetzt das Kernteam im Engineering auf, das die Zukunft unserer Technologie prägen wird – und suchen jemanden, der von Tag eins an sinnvolle Systeme konzipieren, bauen und verantworten möchte.

Als Software Engineer spielst du eine zentrale Rolle beim Aufbau der Basis unserer Next-Gen-Retrofit-Plattform – einer End-to-End-Lösung, die alles von der Projektaufnahme über Kostenmodellierung und Angebotserstellung bis hin zu Bau-Workflows unterstützt.
Dein Schwerpunkt liegt auf Backend-Entwicklung in TypeScript, zugleich arbeitest du über den gesamten Stack hinweg und leistest Beiträge zu Systemdesign, Dokumentation und Tech-Strategie.

In enger Zusammenarbeit mit Product und Operations stellst du sicher, dass wir die richtigen Tools auf die richtige Weise bauen – mit Blick auf Skalierbarkeit, Flexibilität und Klarheit.


Wenn du für Clean Architecture brennst, gerne großartige Developer Experiences schaffst und Dinge baust, die echte Probleme lösen – dann ist das deine Chance.
Über die Rolle


Wir suchen eine:n Backend Software Engineer, der/die die Grundlage unserer Next-Gen-Retrofit-Plattform mitentwickelt – eine End-to-End-Lösung für Projektaufnahme, Kostenmodellierung, Angebotserstellung und Bau-Workflows.

Du arbeitest primär mit TypeScript (Node.js, NestJS) und spielst eine Schlüsselrolle beim Design skalierbarer Backendsysteme und APIs.


Aufgaben
• Entwicklung von Backend-Services mit Node.js und NestJS
• Entwurf und Dokumentation von Systemarchitektur und API-Verträgen
• Implementierung von Microservices und Event-Driven-Patterns
• Aufbau und Pflege von CI/CD-Pipelines (AWS)
• Sicherstellung der Codequalität durch Tests und Reviews
• Zusammenarbeit mit cross-funktionalen Teams beim Bau von Backend-Tools
• Verwaltung von SQL-/NoSQL-Datenbanken (PostgreSQL, MongoDB)
• Entwicklung und Pflege von AI-Chat-Funktionalitäten

Dein Profil

Qualifikationen

• 4–6+ Jahre Erfahrung in der Backend-Entwicklung
• Fundierte Kenntnisse in TypeScript, Node.js, NestJS
• Erfahrung mit RESTful APIs und ereignisgesteckter Architektur
• Tiefes Verständnis von Microservice-Architekturen
• Vertrautheit mit CI/CD und Cloud-Deployments (AWS)
• Solides Verständnis von SQL- und NoSQL-Datenbanken
• Vertrautheit mit LLM-APIs (OpenAI, Anthropic etc.) und Prompt Engineering
• Ausgezeichnete Kommunikations- und Dokumentationsfähigkeiten

Pluspunkte

• Interesse an Nachhaltigkeit, PropTech oder Climate Tech
• Fließendes Englisch (Deutsch von Vorteil)

Warum wir?

• Gestalte die Architektur einer Plattform von Grund auf mit
• Sei Teil unseres initialen Tech-Teams und präge unsere Dev-Kultur
• Baue Software mit echtem Impact – für schnellere, grünere Gebäude
• Arbeite in einem eng abgestimmten Team mit schnellen Feedbackschleifen, direktem Zugang zum Leadership und klarer Vision
• Standort im Herzen Berlins (Kreuzberg) – mit Raum zu wachsen und zu experimentieren

Das ist kein 9-to-5-Job.

Wir sind ein Startup mit einer mutigen Mission, und das bedeutet:

• Geschwindigkeit vor Perfektion
• Eigenverantwortung vom ersten Tag an
• Lernen durch Handeln (und Scheitern)
• Flexibilität mit klarem Fokus auf Ergebnisse
• Office‑First: Gemeinsame Präsenz im Büro, um Zusammenarbeit, Onboarding und schnellen Austausch zu fördern; Remote‑Tage nach Absprache.

Dafür gibt’s echten Impact, Tempo und Kolleg:innen, die dich unterstützen.

Über uns

Wir sind WALLROUND – ein PropTech-Startup aus Berlin, das energetische Sanierungen revolutioniert.

Unser Ziel: den Weg zu Null-Emissions-Gebäuden für Vermieter:innen so einfach, profitabel und effizient wie möglich zu machen.

Mit starken Partnern wie Vonovia (Europas führendes Wohnimmobilienunternehmen) entwickeln wir eine Tech-enabled End-to-End-Sanierungslösung, die nicht nur Gebäude nachhaltig transformiert, sondern Vermieter:innen beim Kampf gegen den Klimawandel unterstützt.

Nach erfolgreichem Abschluss unserer letzten Investitionsrunde freuen wir uns, mit Revent und dem Green Generation Fund zwei namhafte Investoren als Shareholder an Bord zu haben
.

Required Skill Profession

Computer Occupations


  • Job Details

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Unlock Your Senior Backend Potential: Insight & Career Growth Guide


Real-time Senior Backend Jobs Trends (Graphical Representation)

Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph here. Uncover the dynamic job market trends for Senior Backend in Berlin, Germany, highlighting market share and opportunities for professionals in Senior Backend roles.

34217 Jobs in Germany
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3989 Jobs in Berlin
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Download Senior Backend Jobs Trends in Berlin and Germany

Are You Looking for Senior Backend Software Engineer in Berlin Job?

Great news! is currently hiring and seeking a Senior Backend Software Engineer in Berlin to join their team. Feel free to download the job details.

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The Work Culture

An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at Wallround GmbH adheres to the cultural norms as outlined by Expertini.

The fundamental ethical values are:

1. Independence

2. Loyalty

3. Impartiapty

4. Integrity

5. Accountabipty

6. Respect for human rights

7. Obeying Germany laws and regulations

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Interview Tips for Senior Backend Software Engineer in Berlin Job Success

Wallround GmbH interview tips for Senior Backend Software Engineer in Berlin

Here are some tips to help you prepare for and ace your Senior Backend Software Engineer in Berlin job interview:

Before the Interview:

Research: Learn about the Wallround GmbH's mission, values, products, and the specific job requirements and get further information about

Other Openings

Practice: Prepare answers to common interview questions and rehearse using the STAR method (Situation, Task, Action, Result) to showcase your skills and experiences.

Dress Professionally: Choose attire appropriate for the company culture.

Prepare Questions: Show your interest by having thoughtful questions for the interviewer.

Plan Your Commute: Allow ample time to arrive on time and avoid feeling rushed.

During the Interview:

Be Punctual: Arrive on time to demonstrate professionalism and respect.

Make a Great First Impression: Greet the interviewer with a handshake, smile, and eye contact.

Confidence and Enthusiasm: Project a positive attitude and show your genuine interest in the opportunity.

Answer Thoughtfully: Listen carefully, take a moment to formulate clear and concise responses. Highlight relevant skills and experiences using the STAR method.

Ask Prepared Questions: Demonstrate curiosity and engagement with the role and company.

Follow Up: Send a thank-you email to the interviewer within 24 hours.

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Be Yourself: Let your personality shine through while maintaining professionalism.

Be Honest: Don't exaggerate your skills or experience.

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Body Language: Maintain good posture, avoid fidgeting, and make eye contact.

Turn Off Phone: Avoid distractions during the interview.

Final Thought:

To prepare for your Senior Backend Software Engineer in Berlin interview at Wallround GmbH, research the company, understand the job requirements, and practice common interview questions.

Highlight your leadership skills, achievements, and strategic thinking abilities. Be prepared to discuss your experience with HR, including your approach to meeting targets as a team player. Additionally, review the Wallround GmbH's products or services and be prepared to discuss how you can contribute to their success.

By following these tips, you can increase your chances of making a positive impression and landing the job!

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