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# Senior Software Engineer (Backend) - Node Connectivity

- **Company:** Realign Llc
- **Location:** San Jose, CA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $94,000.0
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, C++ (Programming Language), Cloud Computing, Continuous Integration, Software Debugging, Linux, Domain Name System (DNS), Firmware, Protocol Buffers, IPv4, IPv6, Virtual Private Networks (VPN), Network Security, Networking Basics, Routing, Node.Js, Public Key Infrastructure, Reliability Engineering, Prometheus, Software Engineering, System Programming, Transmission Control Protocol (TCP), Datadog, Computer Networking Systems, Transport Layer Security, Load Balancing, Concurrency, Backend, Gitlab-ci, Kustomize Configuration Management, Kubernetes, Grpc, Docker
- **Published:** September 17, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=d990f481f4b9127a

## About the Role

10+ years of professional software engineering experience, including technical leadership of substantial systems.
Strong experience with Go, C/C++, or another systems programming language, with the ability to become
productive in Go.
Experience designing and operating large-scale distributed services in production.
Strong knowledge of Linux and networking fundamentals, including IPv4/IPv6, TCP, routing, DNS, and TLS.
Experience with concurrency, performance analysis, debugging, and capacity planning.
Sound judgment in architecture, incident response, and technical tradeoffs.
Clear written and verbal communication. You can align teams without relying on authority

## Description

Nextunnel is a globally distributed, high-availability networking system. It routes device traffic across regions
while enforcing strict access controls and preserving service through failures. The platform is written primarily
in Go and runs on Kubernetes in AWS. It uses gRPC, mTLS, Docker, GitLab CI, Kustomize, and modern observability
tooling. We are looking for a hands-on technical lead to guide porting the system to a new deployment platform.
Work on porting Nextunnel deployment to a newly created internal kubernetes-like platform.
Troubleshoot issues in bootstrapping nextunnel in this new environment.
Improve the service's scalability, reliability, security, performance, and operability.
Establish clear technical direction and turn it into practical, staged delivery plans.
Write and review robust Go code for distributed, concurrent, networked systems.
Diagnose complex failures across applications, protocols, containers, and cloud infrastructure.
Strengthen testing through unit, integration, end-to-end, fuzz, and scale tests.
Work with firmware, cloud infrastructure, security, SRE, and product teams on cross-system changes.
Good to have skills:
Kubernetes, AWS/EKS, Docker, Kustomize, and CI/CD systems.
gRPC, Protocol Buffers, mutual TLS, PKI, or network security.
Packet processing, tunneling, VPNs, load balancing, or distributed routing protocols.
OpenTelemetry, Prometheus, Datadog, or production observability at scale.