Lead Fullstack Engineer (fmd)

hallo theo; Berlin; Vor Ort; EUR 70.000 - 90.000; Vollzeit

Zusammenfassung

A tech innovation firm in Berlin is looking for a Lead Fullstack Engineer to design and build their AI-native property management platform. You will oversee the end-to-end delivery of features while collaborating with cross-functional teams to enhance the user experience. The ideal candidate has 6-8 years of experience in software engineering, a strong understanding of AI trends, and is proficient in modern programming languages. Business-fluent German and strong English skills are essential for this role. Join us to make a significant impact in the industry.

Qualifikationen

• Minimum 6-8 years of experience in software engineering, ideally in product-driven environments.
• Solid understanding of LLMs and current AI trends.
• Experience operating services in the cloud (e.g., AWS, GCP or Azure).

Aufgaben

• Own end-to-end delivery of features from discovery to implementation.
• Build reliable backend and frontend components that integrate with the tech stack.
• Collaborate closely with Product, Design, and Operations.

Kenntnisse

strong product mindset

proficient in modern programming language

business-fluent German

strong English skills

Tools

AWS

GCP

Azure

Jobbeschreibung

As Lead Fullstack Engineer at hallo theo you design, build and operate the core systems of our AI-native property management platform. You work hands-on across the stack from intuitive frontends to robust backend services and data flows and take real ownership for critical user journeys. You work with great attention to detail, empathy and a solution-oriented mindset with a strong feel for both our users and our technology and you help turn ambiguous problems into simple, impactful product experiences.

Your Responsibilities

• Own the end-to-end delivery of features and services from discovery and technical design through implementation, testing, rollout and monitoring in production.
• Build and evolve reliable backend and frontend components (APIs, services, UIs) that integrate with our web tech stack and data layer.
• Improve our architecture and codebase: refactor, define clear interfaces and keep our platform secure, observable and maintainable.
• Collaborate closely with Product, Design, and Operations to shape scope, break down complex problems and make pragmatic trade-offs between speed and quality.
• Act as a technical sparring partner and mentor for other engineers, supporting good engineering practices and a healthy engineering culture.

Preferred Background

• 68 years of experience in software engineering, ideally in product-driven environments (startups, scale-ups or similar) with a strong track record in complex and uncertain projects.
• Strong product mindset: you think in user journeys and outcomes, not just tickets, and you are comfortable making trade-offs under ambiguity.
• Solid understanding of LLMs, RAG and current AI trends, and motivation to apply them pragmatically in a real product.
• Proficient in at least one modern programming language and experienced in a web tech stack (e.g., Python and SQL plus modern web frameworks and APIs).
• Experience operating services in the cloud (e.g., AWS, GCP or Azure) including CI/CD, logging, monitoring and basic security practices.
• Business-fluent German (C1 or higher) and strong English skills, as you’ll work with German-speaking stakeholders and an international team.

Nice to have

• Experience in domains with complex operations or workflows (e.g., proptech, fintech marketplaces or B2B SaaS).
• Prior experience in a tech lead capacity (leading projects or streams) even without formal line management.
• Why Join Us

At hallo theo you work on AI with real impact: we are not just building tools, we are reshaping the everyday reality of millions of people who live in and manage properties. You’ll join an interdisciplinary team of experts from real estate tech and operations and help define how modern AI products are built and run in our industry. With a clear ambitious vision and a tech- and AI-first operating model, you’ll have the autonomy and responsibility to shape our platform, our engineering practices and the future of property management in Germany.

Your Mission

As Lead Fullstack Engineer at hallo theo you design, build and operate the core systems of our AI-native property management platform. You work hands-on across the stack from intuitive frontends to robust backend services and data flows and take real ownership for critical user journeys. You work with great attention to detail, empathy and a solution-oriented mindset with a strong feel for both our users and our technology and you help turn ambiguous problems into simple, impactful product experiences.

Key Skills

• Laboratory Experience
• Vendor Management
• Design Controls
• C/C++
• FDA Regulations
• Intellectual Property Law
• ISO 13485
• Research Experience
• Soli dWorks
• Research & Development
• Internet Of Things
• Product Development

Employment Type : Employee

Experience: years

Vacancy: 1

Lead Fullstack Engineer fmd • Berlin, Berlin, Germany