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.
• 120-140k annual rate
• Output-oriented working model.
• Company laptop provided.

Interview Process

1. 30-minute discussion with engineering leadership.
2. Technical deep dive with live coding and architecture discussion.
3. Final technical/culture discussion if needed.