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 Developer responsible for creating scalable service-based architectures. Involves driving software development in a hybrid work environment across front-end and back-end technologies.
Responsibilities
- Design and development of **scalable, service-based architectures** (front-end and back-end), while remaining hands-on in coding and delivery
- Architect and implement **system integrations** across internal services and third-party platforms (REST, GraphQL, event streams, webhooks, ETL pipelines)
- Collaborate with Product to translate business requirements into **technical solutions**, defining scope, complexity, and dependencies
- Drive development across teams for services built in **Node.js, TypeScript, JavaScript, and Python**
- Design and maintain **API contracts, data models, and integration patterns** to ensure consistency and reliability across systems
- Build and optimize **secure, high-performance, and highly available systems**
- Contribute to **AI-enabled features and workflows**, including integration of ML models, LLM APIs, or intelligent automation pipelines
- Partner with architects to define **system design, integration strategies, and reusable frameworks**
- Produce clear technical documentation (architecture diagrams, data flows, API specs, integration patterns)
- Establish and enforce **best practices in code quality, testing, and deployment**
- Lead code reviews, approve merges, and mentor engineers across teams
- Troubleshoot complex production issues and drive resolution across distributed systems
- Oversee the **end-to-end lifecycle** of feature development—from design through deployment and monitoring
Requirements
- 5+ years of experience building **scalable, production-grade software systems** across front-end and back-end
- Bachelor’s degree in Computer Science or a related field
- Strong expertise in **JavaScript and TypeScript**
- Proven experience with **Node.js and GraphQL** (required)
- Deep experience building and consuming **RESTful APIs and distributed services**
- Strong proficiency with tools and technologies such as **Python, Docker, Git, SQL, and cloud-native architectures**
- Hands-on experience with **GCP** or **AWS services** (e.g., S3, CloudFront, EC2, RDS, Lambda, Batch)
- Experience designing and implementing **system integrations** (microservices, third-party APIs, event-driven architectures, messaging systems like Kafka/SQS)
- Ability to lead and deliver **large, complex technical initiatives**
- Strong understanding of **software design patterns, system architecture, and data flow design**
- Excellent communication skills, with the ability to articulate complex technical concepts clearly
- Experience working in **Agile/Kanban environments** and a strong understanding of the SDLC
- Adaptability and a proactive mindset in fast-paced, evolving environments
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