Senior Software Engineer - AI First, Full Stack
New
Remote (Brazil), Available to overlap with US Mountain/Pacific business hoursContractSenior
Salary$44K–$66K USD - depending on experience
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Job Details
- Languages
- Professional English proficiency
- Experience
- 5+ years of full-stack engineering experience
- Required Skills
- DockerNode.jsPostgreSQLTypeScriptAzureReact
Requirements
- 5+ years of full-stack engineering experience with TypeScript/Node.js and React.
- Production experience building and shipping AI-powered applications.
- Hands-on experience with LLM APIs (Anthropic, OpenAI, Gemini, or equivalent) and agent orchestration.
- Real-time systems experience including WebSockets, streaming APIs, or telephony/voice pipelines.
- Strong database and API design fundamentals with PostgreSQL.
- Comfortable working in a multi-tenant SaaS architecture.
- Professional English proficiency for async collaboration.
- Ability to work independently and manage priorities.
- Available to overlap with US Mountain/Pacific business hours.
Responsibilities
- Build and maintain real-time AI voice pipeline components including STT, TTS, LLM orchestration, and telephony integration.
- Develop multi-tenant SaaS platform features across web, voice, and SMS channels.
- Implement AI agent workflows using Mastra orchestration and LLM integrations.
- Design and build backend services, APIs, and data models supporting high-volume production workloads.
- Develop frontend interfaces and PWA features using React.
- Build platform tooling, admin interfaces, and partner-facing configuration systems.
- Contribute to BridgeNode open-source framework and VoxaCor proprietary feature layers.
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