Together AI • 📍 US / EU Remote •
$195k - $265k USD
Work directly on speculative decoding tree verification, PyO3 bindings for custom CUDA graphs, and Tonic bi-directional gRPC streaming backpressure.
#serde • $183k-$244k USD Base
Serde in Production Rust: Architecture & Open Roles
Compile-time zero-copy serialization & deserialization framework
1. Why Teams Deploy Serde
Serde (`#[derive(Serialize, Deserialize)]`) is the most downloaded crate ecosystem in Rust. Unlike reflection-based serializers in Go or Java that inspect types at runtime, Serde uses procedural macros to generate specialized visitor code at compile time, allowing the LLVM optimizer to inline format parsing directly into struct construction.
2. Serde Kernel & Memory Internals
In high-throughput ingestion pipelines, allocating `String` or `Vec<u8>` for every parsed field destroys CPU cache locality. Senior Rust engineers leverage Serde's zero-copy lifetime borrowing (`#[serde(borrow)]` with `&'a str` or `Cow<'a, str>`) alongside SIMD-accelerated parsers (`simd-json`, `sonic-rs`) or binary zero-copy archive formats like `rkyv` and `bincode`.
3. Serde Interview & Hiring Bar
Every Rust engineering role touches Serde, but systems interviews specifically test custom `Visitor` implementations, zero-copy lifetime deserialization, and avoiding polymorphic `serde_json::Value` allocations on hot paths.
Open Serde Engineering Positions (5)
Hugging Face • 📍 Worldwide Remote •
$185k - $240k USD
Ship quantized GGUF/AWQ matrix multiplication kernels, maintain PyO3 wheels downloaded 50M+ times per month, and profile BPE tokenization throughput.
Qdrant • 📍 Europe / US Remote •
$175k - $235k USD
Design disk-backed HNSW graph traversal over Linux io_uring, tune Raft shard consensus rebalancing, and write hand-vectorized distance functions.
Polars • 📍 Worldwide Remote •
$170k - $225k USD
Optimize out-of-core streaming hash joins, cardinality estimation in the lazy query planner, and Parquet predicate pushdown.
Astral • 📍 Worldwide Remote •
$190k - $255k USD
Optimize cross-platform filesystem syscalls on Linux, macOS, and Windows, tune PubGrub version solving for complex PyTorch/CUDA index trees, and reduce binary footprint.