About

A little more about John Connor Sanders.

At the Colosseum

I’m a hands-on engineer based in the Dallas–Fort Worth area with over a decade of professional experience who enjoys building software where latency, reliability, and user experience all matter.

My work tends to land where systems get critical: streaming data, observability, and AI features that need to behave like the rest of your platform.

Most of what I build sits at the intersection of:

  • Streaming & data infrastructure: CDC, event pipelines, schema evolution, stateful processing
  • Observability & systems tooling: turning telemetry into tools people actually use
  • Productionized AI: agentic workflows, retrieval, evaluation, and guardrails

I build primarily in Rust, Go, and Python, and I enjoy taking projects from whiteboard to shipped systems.

What I care about

  • Designing for failure: backpressure, retries, idempotency, schema evolution, and safe rollouts
  • Clear interfaces: boring, well-documented APIs and tooling that helps teams move faster
  • Measurable outcomes: performance, cost, reliability, and time-to-debug improvements

A few highlights

  • Apache Arrow / Avro: helped ship arrow-avro, a vectorized bridge between Apache Avro and Apache Arrow for Rust, and wrote the announcement post.
  • Streaming systems: built high-throughput gRPC/QUIC/Kafka components and CDC-friendly sinks designed for predictable performance and operational simplicity.
  • Developer experience: shipped internal frameworks and open-source tooling that make it easier to build and operate streaming applications without reinventing the same concurrency and plumbing.
  • Practical AI tooling: built platform primitives for secure, reliable agentic AI (LangGraph orchestration, knowledge graphs, GraphRAG, evaluation).

Stack

  • Languages: Rust, Go, Python, SQL
  • Streaming: Kafka, NATS, Pulsar
  • Processing: Flink, Spark, Arrow, DataFusion
  • Storage: Postgres, ClickHouse, Databricks
  • Communication: gRPC, REST, IPC
  • Infrastructure: AWS, GCP, Azure, eBPF

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