Senior Backend Engineer (.NET) (f/m/d)
🇩🇪 Germany
Management
Python
C#
Docker
AWS
Machine Learning
Design
Backend
SaaS
Frontend
Senior Backend Engineer (.NET) (f/m/d)
from 🇩🇪 Germany
Join Apaleo and Shape the Future of Hospitality Tech!
Apaleo is the world’s most open, API-first property management platform powering the next generation of hospitality operations. Its modular, AI-powered infrastructure enables hoteliers to customise their tech stack, automate routine work, and deliver seamless, personalised guest experiences, powered by best-in-class apps and autonomous AI agents that adapt to every stay.
We are looking for aSenior Backend Engineer (f/m/d) to build the foundation of Apaleo’s market-facing API layer, bringing agentic booking into hospitality and enabling the next generation of guest-facing AI experiences.
This is a highly autonomous role where you will design and ship theStorefront API, a production-grade, scalable interface that allows external systems (like ChatGPT and booking platforms) to interact directly with Apaleo.
You’ll operate at the intersection ofbackend engineering and AI, starting with clean API architecture and evolving into systems that power intelligent, agent-driven interactions.
What You’ll Be Up To
Build the Storefront API from Scratch
- Design and implement aproduction-grade, multi-tenant API / MCP
- Enable seamless integration with external platforms and AI agents
- Ensure scalability, reliability, and high performance from day one
Own the Full API Lifecycle
- DefineAPI schemas and contracts (OpenAPI)
- Implementversioning strategies and backward compatibility
- Designauthentication, authorization, and security patterns
- Buildrate limiting and usage controls
- Ensure strongdocumentation and developer experience
- Set upmonitoring and observability
Work Across Distributed Systems
- Integrate with existing.NET microservices
- Connect toevent-driven systems (Kafka or similar)
- Navigate and improve acomplex distributed architecture
Operate in the Cloud
- Deploy and manage services inAWS
- Work withDocker and containerized environments
- Contribute toinfrastructure as code practices
Collaborate on AI-Driven Use Cases
- Partner with AI engineers to enableagent-based workflows
- Build APIs that integrate withLLM-powered systems
- Help evolve the platform towardAI-native product capabilities
Shape Engineering Standards
- Define best practices for:
- API design
- System architecture
- Code quality and maintainability
- Contribute to how theecosystem team scales and operates
What You’ll Bring to the Team
Core Requirements
- Proven experience building and operatingproduction-grade APIs at scale
- Strong expertise inREST API design and architecture
- Solid experience withC# / .NET8+
- Hands-on experience withAWS, Docker, and infrastructure as code
- Strong understanding ofmicroservices and distributed systems
- Ability towork independently and make architectural decisions
- Interest inAI systems and integrations
Mindset & Traits
- Self-starter — you take ownership and drive work without waiting for direction
- Comfortable with ambiguity — you can build in evolving, low-structure environments
- Pragmatic decision-maker — you balance speed with long-term scalability
- Builder mindset — you enjoy creating systems from scratch
- Curious about AI — you’re motivated by where backend systems meet intelligent agents
Nice to Have
- Experience with:
- Event-driven systems (Kafka or similar)
- Multi-tenant SaaS architectures
- Developer-facing or public APIs
- Exposure to:
- LLM integrations or agent-based systems
- Python
- Any major frontend framework
- Background in hospitality tech (not required)
Why This Role Matters
This role is about more than building APIs, it’s aboutdefining how external systems interact with Apaleo in an AI-first world.
You’ll:
- Lay the foundation formarket-facing, AI-integrated products
- Enableguest-facing experiences powered by intelligent agents
- Help transform Apaleo into aplatform ready for autonomous systems
What We Offer
Culture & Growth
- A Diverse & International Team: Work alongside passionate professionals from over 20 nationalities, bringing unique cultural perspectives, backgrounds, and experiences to shape the future of hospitality tech.
- Growth & Development: As we scale, so do your opportunities. You’ll benefit from 360° feedback reviews, a dedicated learning budget, and plenty of chances to take on more responsibility. Our evolving career framework ensures you have increasing opportunities to learn new skills, advance your career, and make an impact.
- Autonomy & Ownership: Great ideas can come from anywhere. We empower you to take responsibility, make decisions, and contribute directly in an environment built on trust, transparency, and collaboration.
- Shape the Future of Hospitality Tech: Be part of a fast-growing scale-up transforming the hospitality industry. From day one, your work drives real impact and you’ll have the freedom to bring your ideas to life.
- Competitive & Fair Compensation: We believe great work deserves great pay. Our salaries are competitive and guided by benchmarking data to ensure fairness across all roles and teams. We make sure to recognize and reward performance and contribution.
Perks & Lifestyle
- Flexible & Remote Work Options: We focus on results, not clocking hours. You can work from home, the office or in a hybrid setup, with flexibility to adapt your schedule as long as it makes sense for your role, your team and our business.
- Free Public Transport: Travel across Germany with ease using our fully coveredDeutschland Ticket.
- Team Connection: Strong connections fuel collaboration. We celebrate and connect through regular team dinners, company meetups, Oktoberfest celebrations, Christmas parties, and other offsite events.
- Paid Time Off: Enjoy30 days of vacation to fully disconnect, recharge, and return inspired.
- Health & Wellbeing: Prioritize your health with access to hundreds of gyms, fitness studios, and wellness options through ourEGYM Wellpass membership.