Backend / Systems Engineer, Agent Infrastructure (m/f/x) at xHeron Solutions | BE, DE | Rezi

Backend / Systems Engineer, Agent Infrastructure (m/f/x) at xHeron Solutions

Backend / Systems Engineer, Agent Infrastructure (m/f/x)

xHeron Solutions · BE, DE

1 weeks ago

Backend / Systems Engineer, Agent Infrastructure (m/f/x)

xHeron Solutions · BE, DE

9 days ago
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About the Role

We're looking for a Backend / Systems Engineer to build the software that makes guest operations reliable, focusing on persistent state, safe execution, permissions, and recovery across humans, agents, and external systems.

Responsibilities

  • Build backend services and data models that track operational work, ownership, and outcomes over time.
  • Develop asynchronous workflows with reliable handling of retries, timeouts, external events, and interrupted execution.
  • Build shared APIs and tool-execution interfaces, including authorization and customer-data isolation.
  • Improve the infrastructure for storing, versioning, and serving operational knowledge.
  • Strengthen testing and observability while evolving the existing platform alongside the CTO, AI engineer, and product engineering team.

Requirements

  • Strong backend engineering skills in Python and/or TypeScript/Node.js, with willingness to work across both.
  • Practical experience with PostgreSQL or another relational database, including data modeling and transactions.
  • Experience shipping and maintaining production backend services.
  • Familiarity with background jobs, queues, or event-driven processing, and an understanding of failure handling and data consistency.
  • The ability to investigate production problems, design clear interfaces, and deliver maintainable solutions.
  • Around 3+ years of backend engineering experience is a useful guide, not a hard requirement. The systems you've owned matter more than the number.
  • You want to design the systems underneath infrastructure, not just configure it.
  • You are comfortable investigating ambiguous problems yourself.
  • You have shipped and maintained a production backend service.
  • You favor simple, maintainable solutions over clever or complex ones.
  • You are looking for a role with flexibility beyond a defined 9-to-5.

Skills

  • Python
  • TypeScript
  • Node.js
  • PostgreSQL
  • Relational databases
  • Data modeling
  • Transactions
  • Backend services
  • Background jobs
  • Queues
  • Event-driven processing
  • Failure handling
  • Data consistency
  • Production problem investigation
  • Interface design
  • Maintainable solutions
  • Workflow engines
  • Multi-tenant applications
  • Authorization
  • FastAPI
  • Agent tooling

Experience Level

  • 3+ years of backend engineering experience

Benefits

  • Real ownership: working on foundational product architecture with substantial technical ownership from day one.
  • Direct founder access: work directly with the CTO, shaping how humans and agents work together.
  • Investment in employees: ownership grows as the system does.
  • Upside: VSOP alongside salary.

About the Company

  • xHeron takes responsibility for guest operations for short-term rental businesses: guest communication, coordinating teams, resolving issues.
  • The operating scope is delivered through a mix of people, software, and AI.
  • We're building the technology to handle more of that work autonomously, without turning into another tool customers have to supervise.