Embedded Software Engineer

Role Summary:
We’re looking for a Senior IPv6 Engineer to take ownership of IPv6 feature development and integration across our UniFi gateway routers. You’ll design, build, and optimize critical IPv6 networking components that enable secure, reliable, and high-performance connectivity for our global users.

Responsibilities:

• Design, develop, and maintain IPv6 networking features in enterprise router firmware and software stacks
• Ensure seamless IPv4-to-IPv6 coexistence (dual-stack, tunneling, NAT64, DS-Lite, MAP-E, etc.) for enterprise and ISP-grade deployments
• Conduct performance tuning, benchmarking, and troubleshooting for IPv6 forwarding, security, and QoS features
• Collaborate with product managers and system architects to define the IPv6 roadmap and feature priorities
• Work closely with the QA team to suggest test plans, simulations, and automated test environments for IPv6 functionality

Requirements:

• 5+ years of experience in embedded networking software development

• Strong hands-on experience with:

  • IPv6 protocol stack implementation (L2–L7)

  • IPv6 address management, DHCPv6, SLAAC

  • IPv6 Prefix Delegation

  • Experience with varied IPv6 network setups (enterprise, ISP, and mixed environments)

• Proficiency in C/C++, with familiarity in Linux-based networking stacks
• Excellent problem-solving, analytical, and debugging skills
• Strong communication and documentation abilities.

Nice to Have:

• Experience with IPv6 interoperability testing with ISPs

• Experience with IPv6 certification processes (e.g., IPv6 Ready Logo, Hurricane Electric IPv6 Sage, or equivalent)

• Familiarity with UniFi platforms

Benefits:

• Competitive salary and 5 weeks of vacation per year
• Discretionary bonuses based on individual performance
• Flexible working hours, home office
• Top floor office with terrace and amazing view of Prague
• Kitchen packed with coffee, food, snacks & sodas, meal allowance, etc.
• A collective of developers who want to make the best product. Maximum effort to keep processes to a minimum, no complex reporting and similar habits