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# Principal Software Engineer, Load Balancer - Isovalent

- **Company:** Cisco
- **Location:** Barcelona, Spain
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Application Programming Interfaces (APIs), Cloud Engineering, Software Quality, Linux, Distributed Systems, Network Security, Linux Kernel, Network Control, Open Source Technology, Load Balancing, System Availability, Kubernetes, Information Technology, Cisco
- **Published:** July 25, 2026
- **Apply:** https://dejobs.org/x/x/1BC1389EADC243F0BAB9062214DA173B/job/

## About the Role

* Bachelors Computer Science degree, or related fields
 * 5+ years of experience developing load balancing software, preferably with Go
 * Experience with Kubernetes, Cloud Native workloads and/or distributed systems

Preferred Qualifications:

 * Knowledge about Linux systems design, security and/or networking, Linux kernel
 * Desire to write high quality and efficient code
 * Experience designing and implementing APIs
 * A public track record of open-source code commits is a plus

## Description

Cisco Isovalent is seeking a skilled and experienced Software Engineer to develop its next generation Load Balancer leveraging the technology developed with Cilium. You will be responsible for driving forward a standalone eBPF load balancer, enabling scalable, secure, and resilient traffic management in cloud and hybrid enterprise environments. You will work with a highly collaborative and skilled team to build solutions that advance the next generation of networking and security in Kubernetes environments.

What you'll do:

Define and evolve the architecture of our enterprise-grade load balancer.

Lead design and development of the load balancer's data plane, control plane and orchestration tools for scalable traffic management and high availability within Kubernetes.

Guide the team through technical decisions, design reviews, and performance/security optimizations.

Collaborate across engineering, product, and customer teams to align technical direction with business needs.

Contribute to and uphold engineering best practices, code quality, and operational excellence.


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