Staff/Senior Software Engineer - Hydris - Golang (d/f/m)

New Challenge About Us Project Q GmbH ("Q") is a Germany-based DefenseTech company with offices in Berlin and Munich. We network market-available sensors, effectors, or situational awareness systems into a tactical IoT backbone that reliably provides armed forces and security agencies with cross-domain information superiority — automated, scalable, and cost-efficient. Our solutions integrate seamlessly into existing defense and maritime infrastructures, delivering fast data fusion and AI-enhanced analytics for robust situational awareness in dynamic environments. We build platform-agnostic systems that enable real interoperability across domains. As a Staff Software Engineer, you'll directly impact the technical direction of our orchestration products – Hydris – the coordination engine for sensors and mission systems, and the interoperability API that underpins it. You'll work at the layer where heterogeneous real-world systems like radars, AIS receivers, LoRa mesh radios, satellite feeds, and C2 platforms become a single coherent picture. The problems lie in distributed systems, protocols, and data modeling areas. They play out in environments that are bandwidth-constrained, intermittently connected, and operationally unforgiving. The role is deeply hands-on, but it expects you to shape what we build and how we build it, not just deliver what's specified. What you'll do Core engine development Design and build the systems that power Hydris. Go is your primary language. You should be comfortable reading Rust and TypeScript across the codebase, even if you're not writing in them day-to-day. Own the architecture of a system that must run reliably on edge hardware, in disconnected mesh networks, and at scale — often all of that simultaneously. Protocol and integration architecture Evolve the schema that defines how every sensor, asset, and mission system talks to Hydris. Make API design decisions that hold up across our client libraries without creating a maintenance burden. Continue refining the integration framework that lets Hydris connect to new sensor types, data sources, and command systems. Set the patterns for how built-in integrations (ADS-B, AIS, ASTERIX, Meshtastic, SpaceTrack, TAK, federation) are structured, tested, and maintained. Make it straightforward for external developers and system vendors to build their own plugins/integrations to Hydris. Distributed systems Architect the peer-to-peer mesh and federation layer that keeps Hydris operational in disconnected, denied, intermittent, and limited-bandwidth environments. Solve the hard coordination problems: conflict resolution across federated nodes, eventual consistency of entity state, and track correlation across unreliable links. Ensure the system degrades gracefully rather than failing completely when connectivity is lost or constrained. Technical leadership Set technical standards for the codebase: how we test distributed behavior, how we handle protocol versioning, how we think