Founding Software Engineer

Galaxy is an applied lab building bespoke context systems alongside ambitious teams. Successful AI deployments run on context that's governed, access-controlled, well-structured, and centrally managed. We help enterprises build and own that layer, because their knowledge is one of their most valuable assets. We're open source first. Our flagship project is Filament, a fast, pluggable, Apache 2.0 data movement engine and the fastest benchmarked Postgres to Postgres replication engine in the world. Databases, APIs, event streams, and object storage all run through one pipeline. The big goal is an open source context management system any company can run and own. We also work directly with customers, deploying production systems alongside their teams. Everything we open source is proven in real company environments first. Galaxy was founded by Mitch Bregman and Leon Kozlowski, who have led large-scale, mission-critical infrastructure across Flock Safety, Bloomberg, Unify, and DARPA programs. The team includes architects of high-profile open source projects, including Wails, the popular Go desktop app framework. We're a small, focused team in New York, backed by Caffeinated, Bungalow, Crew, and Moonriver. The Role We're hiring a Senior or Staff Software Engineer to help lead Galaxy's infrastructure. Our systems move, verify, and model data for companies whose products and AI depend on it being correct. You'll own major parts of our Go platform and open source projects, including Filament, where throughput, concurrency, and correctness are the whole game. You'll be one of our first senior engineers. You'll work with the founders on architecture, shape how we build, and raise the bar for the engineers around you. You will… Design and own high-performance, highly concurrent Go systems from design through production Improve the throughput, efficiency, and reliability of how data moves through our platform Keep our systems correct and recoverable under failure as they scale Lead the technical side of customer deployments and turn their hardest problems into product Shape Filament's architecture and roadmap in the open Mentor engineers, review code, and help define our engineering culture Set the standard for how we build with AI without lowering the bar 6+ years building complex technical products, with deep expertise in Go Experience shipping and operating distributed systems in production A deep understanding of Go concurrency, and the profiling skills to prove a change actually helped Real depth in at least one of distributed systems, concurrency control, data replication, or memory management Strong systems design judgment and a clear sense of how architectural choices play out over time Comfort working in Python and TypeScript when needed The discipline to use AI to move faster without compromising correctness or reliability The ownership to take a customer problem to a shipped fix without being handed a spec Have worked with gRPC or ConnectRPC Have built or run streaming infrastructure like NATS or Kafka Have experience with Kubernetes and infrastructure as code Understand database internals like WAL, logical replication, or storage engines Have maintained or been a major contributor to a popular open source project How we work Small team, real ownership. You'll ship to production early and own what you build. Open by default. Much of our code is public, and we hold it to the same bar as anything we sell. Close to customers. Engineers work directly with the people using what they build. AI-native, high bar. We use the best AI tools available, and we own every line that ships. Details Location Flexible, preferably NYC Compensation Health, dental, and vision coverage Unlimited PTO Your work setup, fully covered Gym membership, fully covered #J-18808-Ljbffr Galaxy Software Service