About the Company We are a fast-growing startup from Madrid, Spain. We have developed a world-leading network optimization software product that has been deployed in over 500 Internet Service Providers around the world, in all continents. Our product uses patented algorithms and state-of-the-art machine-learning methods to optimize networks in real-time, making them faster and increasing the Quality-of-Experience of the network users, even in congestion situations. About the Role We are looking for motivated senior engineers to provide advanced technical support to our customers around the world. This is not a management position: we need a hands-on engineer that can solve the kind of problems that may arise when we install our product in our customers. Our product is built in C/C++ over Linux, and is able to process many millions of IP packets per second, running in both virtual and physical servers with up to hundreds of CPUs, with throughput up to 400 Gbps, and it also has a powerful JavaScript-based User Interface. Candidates should be able to perform from 1st to 3rd-level support, but not software development, even though they will work very close to the R&D Department. Furthermore, our product is installed in very advanced IP Service Provider networks, so, in addition to a solid Linux background, we require candidates with high-level IP networking competence, because they will be involved in selecting the most appropriate network architecture for deployment, and in troubleshooting networking problems during implementation. Finally, we are looking for individuals with good communication skills, since they will also be involved in supporting our sales department in technical aspects. Skills Required -Solid Linux competence Be able to install different Linux distributions and troubleshoot problems, both in physical and virtual environments Fluent in shell commands, grep, less, tar, awk, shell scripts (Python would be a plus) Experience in Linux networking: ip command (configuring multiple IP addresses, interfaces, routes, etc.), iptables, tcpdump - High-level IP networking competence Configuring switches and routers Experience with fiber networks, transceivers, DAC cables Knowledge of link aggregation (LACP, mLAG) Routing, including OSPF and BGP Access network technology: PPPoE, IPoE, RADIUS, DHCP - Very high-level, with perfect fluency in Portuguese, English and Spanish Qualifications BSc/MSc or equivalent university degree, in Computer Science, Electrical Engineering or similar. We offer: Full-time remote position, working from home, as a subscontractor Competitive salary Being part of a small but fast-growing technology start-up, with a friendly atmosphere and direct contact with all the team, from management, to R&D and Sales.