Software Engineer - Hydris - Golang

New Challenge

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.

Core engine development

Protocol and integration architecture

Distributed systems

Technical leadership

• Have built and shipped distributed systems that run in production, ideally in environments where reliability matters more than convenience.
• Are comfortable working across the stack, from Protobuf schema design and systems-level Go, to the TypeScript that puts a map in front of a user.
• Have well-formed views about API design and protocol evolution, informed by experience maintaining APIs that other people depend on.
• Can operate effectively with a high degree of autonomy but are adept at collaboration with colleagues toward high-quality technical decisions, at scale.
• Are interested in contributing to European military, maritime, and critical infrastructure defence systems.
• Write clearly and communicate architectural decisions in a way that survives beyond the conversation where they were made.
• Working language is English. German is not required.
• Experience with geospatial systems, sensor fusion, or track management.
• Familiarity with defense or ISR data standards like CoT/TAK, ASTERIX, SAPIENT, MIL-STD-2525.
• Background in networking, mesh architectures, or systems designed for contested or degraded communication environments.
• Experience working on developer-facing open-source infrastructure where adoption depends on the quality of the API and documentation.

Note: We're unable to offer visa sponsorship for this role – candidates must already be eligible to work in Germany.