Staff Software Engineer (Golang)

We are looking for a Staff Software Engineer to take technical ownership of a new component of an enterprise network security platform operating across complex IT, OT and IoT environments.
You will join at the beginning of a new product component and engineering team, designing the architecture and building the solution from the ground up.
This is a hands-on technical leadership role, not people management. You’ll work closely with Product, QA and other engineering teams while remaining deeply involved in architecture and coding.
What You’ll Do
Design and build a new platform component from scratch.
Own architecture and key technical decisions through production implementation.
Develop core backend and infrastructure components primarily in Go.
Work with the platform’s data plane, distributed systems and data flows.
Build scalable, reliable services using Kubernetes and cloud-native infrastructure.
Work with PostgreSQL, APIs and service-to-service communication.
Provide technical direction as the new engineering team grows.
Use modern development approaches, including AI-assisted coding tools such as Claude Code.
What We’re Looking For
Experience as a Staff / Principal / Lead Engineer, Software Architect, or equivalent senior hands-on role.
Excellent Go / Golang skills — core requirement.
Strong software architecture and system design experience.
Proven experience designing and building complex distributed systems.
Strong backend and infrastructure engineering background.
Hands-on experience with Kubernetes and cloud-native environments.
Experience with PostgreSQL and production data architecture.
Good understanding of data plane architecture, networking, APIs, concurrency, performance, scalability and reliability.
Ability to turn ambiguous requirements into architecture and working production systems.
High degree of technical ownership and independence.
Comfortable working in a fast-moving startup environment with a strong delivery focus.
Nice to Have
Python and/or Java development experience.
Experience with networking, cybersecurity or infrastructure platforms.
Experience with microsegmentation, policy enforcement or similar network security systems.
Experience with Claude Code or other AI coding agents.
Public technical leadership, such as conference speaking or engineering community contributions.
Other details:
Location & Working Model
CET timezone.
Kraków is preferred, with weekly office collaboration.
Strong candidates elsewhere within the required time zone can be considered.
B2B contract with a US entity.
Output-oriented working model.
Company laptop provided.
Interview Process
30-minute discussion with engineering leadership.
Technical deep dive with live coding and architecture discussion.
Final technical/culture discussion if needed.