Embedded Software Engineer (Network Gateway)

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. This role requires working from our Prague office at least two days per week. Responsibilities: Design and deliver routing, security, and connectivity features for the UniFi Gateway product line. Work across the stack, from the Linux kernel and data plane to the networking control plane and device APIs. Build advanced gateway capabilities across routing, SD-WAN, VPN, firewalling, traffic inspection, and identity-based networking. Own complex networking features from architecture and implementation through deployment at UniFi scale. Work closely with Product, Hardware, Support, and QA teams to deliver customer-facing features and fixes. Knowledge and experience: 5+ years of software development experience. Strong C/C++ development and debugging skills. Strong knowledge of Linux internals and Linux networking. Strong understanding of TCP/IP, routing, NAT, firewalling, and network security. Experience developing gateway features such as routing, VPN, firewall, QoS, or security. Experience debugging complex networking and system-level issues on embedded Linux. Ability to design and discuss software at the architectural level. Strong ownership, communication, and problem-solving skills. Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or equivalent practical experience. Fluent in English and Cze

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. 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. Candidates should be prepared to work from our Prague office at least two times per week. 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 famili

About Ramp Ramp is building the smart infrastructure for finance teams, embedded in the transaction flow of every dollar a business spends. We automate how over $200B in annualized spend flows in and out of 70,000+ companies: authorizing payments, flagging risk, categorizing spend, and closing books. The problems are high-stakes, data-dense, and unforgiving. We hire people with high agency and high urgency. We look for slope over intercept. We care less about where you trained and more about what you’ve built. At Ramp, everyone is a builder who owns problems end to end and makes consequential decisions that shape the outcome. The median Ramp customer saves 5% and grows revenue 16% in their first year – far in excess of businesses operating without Ramp. We believe every ambitious company deserves the same. If you want to build systems that directly shape how companies move and manage billions, Ramp is the place to do it. About the role Corporate Security at Ramp owns the security of our internal environment: the device fleet, the identity and access layer, and the AI tools employees use for their work. We are hiring a Systems Engineer to build and operate the controls across these systems. The role is hands-on, writing code and building agentic loops wherever possible rather than solving problems manually. You will help manage device configuration and patching via configuration-as-code, authentication and authenticator policies in Okta, network and gateway enforcement in Cloudflare, and the controls around our enterprise Claude and OpenAI deployments. These systems overlap heavily in practice, and the work is largely about integrating them and automating what would otherwise be manual administration. You will report to the Corporate Security lead and work closely with IT, Security Engineering, and AI DevX. What you'll do Maintain update policies for both OS and software, and monitor the fleet so that newly introduced applications are brought into the patching cadenc

InnoPhase Inc., DBA GreenWave Radios™, is at the forefront of innovation in Open RAN digital radios. Our cutting-edge solutions, powered by the Hermes64 RF SoC, are designed to enhance network energy efficiency while dramatically reducing operational expenses, with purpose-built silicon that is the heart of ORAN-based active antenna arrays. Headquartered in San Diego, California, GreenWave Radios™ has established itself as a pioneer in delivering power-efficient digital-to-RF solutions. The company is supported by a talented team of over 100 engineers spread across four global R&D facilities. With an extensive portfolio of more than 120 global patents, GreenWave Radios™ continues to push the boundaries of radio technology and innovation. To learn more about GreenWave Radios™ and hear what our employees have to say, visit the GreenWave™ certification profile at GreatPlacetoWork.com or explore our Home - GreenWave Radios website. About the Role We’re looking for an experienced Principal Engineer/Manager to lead a small, high-impact team building next-generation cellular infrastructure radio Front Haul Gateway (FHGW) solutions in both FPGA and ASIC. You’ll own everything from architecture through production—defining features, authoring device specifications, and driving the design flow for high-performance programmable logic with embedded Linux-based wireless communications software. This is a senior technical leadership and management role with direct influence on our market-leading cellular infrastructure products, working hands-on alongside experts across design, verification, firmware, and system engineering. What You’ll Do Lead and mentor a small team of FPGA/ASIC design engineers, including resource planning, project scheduling, and technical mentoring/oversight Own solution architecture end-to-end—taking marketing requirements and translating to product specifications through production-quality programmable logic design, verification and ha

For more than 30 years, SonicWall has delivered a partner-first unified cybersecurity portfolio that helps SMBs, MSPs, and IT teams consolidate network security, endpoint security, security service edge (SSE), and threat response across hybrid environments. By bringing connected technology, real-time threat intelligence, automation, and expert services together, SonicWall helps organizations simplify security operations, achieve better security outcomes, and lower total cost of ownership. Backed by a global ecosystem of more than 17,000 partners, SonicWall delivers enterprise-grade protection built for SMB and mid-market realities. For more information, visit www.sonicwall.com or follow us on X, LinkedIn , Facebook , and Instagram . About the Role SonicWall is hiring a Senior Software Engineer to develop and maintain the Content Filtering Service client embedded in SonicOS — the firmware running on SonicWall firewall appliances worldwide. This module intercepts live traffic, queries the CFS rating servers in real time, and enforces URL-based content filtering policies at the packet level. This is security-critical code: a policy bug is a traffic bypass on a deployed security appliance. The codebase is in C with a split Control Plane / Data Plane architecture, multi-blade cache synchronization, and multiple firmware version upgrade paths. Responsibilities Maintain, harden, and extend the CFS client module across both the control plane and data plane. Own the binary UDP protocol implementation between the firewall and the CFS rating servers, ensuring correctness and compatibility across protocol versions. Develop and maintain complete IPv4 and IPv6 support across all code paths. Own the firmware upgrade and migration paths, ensuring they are atomic, failure-safe, and correctly handle all supported version transitions. Improve reliability of inter-blade cache synchronization on multi-blade appliances. Collaborate with the server-side on coordinated

For more than 30 years, SonicWall has delivered a partner-first unified cybersecurity portfolio that helps SMBs, MSPs, and IT teams consolidate network security, endpoint security, security service edge (SSE), and threat response across hybrid environments. By bringing connected technology, real-time threat intelligence, automation, and expert services together, SonicWall helps organizations simplify security operations, achieve better security outcomes, and lower total cost of ownership. Backed by a global ecosystem of more than 17,000 partners, SonicWall delivers enterprise-grade protection built for SMB and mid-market realities. For more information, visit www.sonicwall.com or follow us on X, LinkedIn , Facebook , and Instagram . Responsibilities Lead development and optimization of a key dataplane module for SonicWall NGFW platforms. Design, implement, and enhance high‑performance packet‑processing paths using DPDK/ODP/OFP or similar frameworks. Diagnose and resolve complex performance, throughput, and latency issues in the dataplane. Collaborate with platform, networking, security, and QA teams to deliver features and product improvements. Prototype and evaluate new dataplane technologies, contributing to next‑gen NGFW capabilities. Influence architectural decisions, scalability strategies, and long‑term technical direction for dataplane components. Requirements 10+ years of experience in C/C++ systems‑level development for networking or embedded platforms. Strong hands‑on expertise in DPDK, ODP, OFP , or similar high‑performance packet‑processing frameworks. Solid understanding of L3/L4 networking protocols , including IPv4/IPv6, routing, NAT, VPN/IPsec/SSL, and related protocols. Proven ability to build multi‑threaded, low‑latency, high‑throughput systems. Strong knowledge of OS internals, memory and concurrency models, and network stack behaviour. Excellent debugging, performance tuning, and system analysis s