Senior Fullstack Engineer - AI
Role details
Job location
Tech stack
Job description
This position is part of the Audio Intelligence team at Hiya, working on solutions for audio and speech leveraging AI and Deep Learning. Our products include AI Voice Deepfake Detection, Voice Authentication and Voice AI Agents, served via API for developers or as part of a no-code SaaS platform. The Senior Software Engineer is an Individual Contributor (IC) responsible for evolving the architecture of our SaaS platform (a REST API, a web console, demos, and integrations). You'll design new services and flows involving CRUD operations, audio streaming and model inference. While primarily backend-focused, you'll collaborate with R&D and product teams on integrating and experimenting with AI models, including prompts for AI-driven features, consuming external model APIs, and contributing to lightweight model-in-the-loop systems. What You'll Do
- Build and maintain REST/gRPC backend services using Rust and TypeScript.
- Build and maintain frontend services using SvelteKit.
- Design and maintain relational databases using Postgres.
- Write unit/integration/E2E/stress tests using Rust, TypeScript and Python.
- Write and maintain API documentation using OpenAPI and Docusaurus.
- Build CI pipelines using GitHub Actions.
- Containerize services using Docker and deploy to a Kubernetes cluster.
- Debug in staging and production environments using GCP tools.
- Integrate LLM-based features into the product (e.g., prompt engineering, calling AI endpoints, interpreting responses).
Requirements
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Experience in backend engineering; ideally including low-level languages, streaming APIs and media pipelines.
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A desire to own design and architecture end to end.
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A philosophy of iteration and continuous improvement.
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Understanding customer needs and providing solutions based on that.
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Excellent communication and self-organization skills including working with remote teams.
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Interest in exploring AI use cases, including LLM prompt engineering or model API integration.
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4+ years of relevant work experience.
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Experience with listed technologies or similar alternatives; willingness to learn new ones.
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Proficient at collaborating with both local and remote team members in English., This role requires embodying Hiya's values: serving customers, acting with initiative, continuous improvement, accountability, and contributing with a thoughtful point of view. Nice-to-Have / Fast Start
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Experience with Rust, TypeScript, Cloud environments (GCP), Kubernetes, Postgres.
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Experience using or integrating LLMs via APIs; knowledge of prompt engineering, retrieval-augmented generation (RAG), or basic orchestration of model pipelines.
Benefits & conditions
The requirements listed are guidelines. You don't have to satisfy every requirement. If your skills are transferable, we would love to hear from you.
