Senior Backend Engineer developing Elixir backend services for Home Assistant Cloud. Building and maintaining features while collaborating within the Cloud & Infrastructure team.
About the role
- Senior Backend Engineer at Computrition building a cloud-native SaaS application using C#/.NET and AI-first principles. Taking ownership of system design, development, and cloud infrastructure.
Responsibilities
- Own major components of a new SaaS platform from design through production
- Build event-sourced, CQRS-based services in C#/.NET using DDD principles
- Design clean domain models, message contracts, and integration patterns using RabbitMQ
- Deliver cloud-ready solutions using Docker and AWS (deployment, observability, reliability)
- Apply an AI-first approach to engineering: agentic AI tools, automated workflows, code generation/review, test generation, and productivity accelerators
- Partner with product and engineering leaders to define architecture, standards, and delivery practices
- Write high-quality, well-tested, maintainable code and raise the bar through reviews and mentorship
Requirements
- AI-first mentality with practical experience using AI tools to accelerate development
- Senior-level experience building production systems with C#/.NET
- Hands-on experience with Event Sourcing and CQRS in real-world systems
- Strong working knowledge of Domain-Driven Design (DDD)
- Experience with Vertical Slice architecture (or similar modular service boundaries)
- Solid experience with PostgreSQL
- Experience with asynchronous messaging and integration patterns, ideally RabbitMQ
- Experience containerizing services with Docker
- Experience building/operating cloud-hosted applications, ideally on AWS
- Familiarity with agentic AI concepts (autonomous workflows, tool-using agents, orchestration, evaluation/guardrails) and excitement to apply them in day-to-day engineering
- Strong ownership mindset: you ship, you improve, you operate, you lead
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