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calvinberndt/README.md

Hi, I'm Calvin Berndt 👋

Applied AI Systems Engineer

I build voice and communications systems with applied AI. My work covers telephony, transcription, data pipelines, agents, and the infrastructure around them.

Website · LinkedIn

Animated illustration of Calvin coding outdoors

What I work on

At AnSer, I build full-stack voice agents with LiveKit across telephony, real-time audio, speech-to-text, LLM and tool orchestration, retrieval, text-to-speech, evaluation, product interfaces, and production infrastructure.

I also build the AI-assisted QA pipeline around our Kafka and CDC streams. Calls move through capture, transcription, structured extraction, applicability and gradability rules, automated evaluation, adjudication, reporting, and supervisor review.

That work includes shared Fastify and APISIX APIs, PostgreSQL and pgvector, Next.js and React products, and Dockerized delivery on Linux and Proxmox.

I like the part after the demo: noisy audio, latency, incomplete context, and figuring out what happened when the system gets something wrong.

Tools I use

I spend most of my time in Python and TypeScript, but the work regularly pulls in the tools below.

Languages & product

Python TypeScript JavaScript Go Java C Sharp C++ HTML5 CSS3 React Next.js FastAPI Fastify Prisma Tailwind CSS

AI, voice & data

LiveKit OpenAI Google Gemini Hermes Ollama PyTorch PostgreSQL pgvector Apache Kafka Debezium Redis Microsoft SQL Server

Platform & delivery

Docker Linux Proxmox Apache APISIX GitHub Actions Cloudflare Terraform Harbor Bitwarden Prometheus Git

Pinned Loading

  1. DeepAudioClassifier DeepAudioClassifier Public

    Jupyter Notebook

  2. gpt-oss-space-game gpt-oss-space-game Public

    Forked from kwindla/gpt-oss-space-game

    gpt-oss + voice-ui-kit experiment

    TypeScript

  3. pipecat-quickstart pipecat-quickstart Public

    Forked from pipecat-ai/pipecat-quickstart

    Get started with Pipecat in 5 minutes. Build your first voice AI bot with browser-based interaction.

    Python

  4. LIFX LIFX Public

    C# 1