System & Network Infrastructure Engineer

Description :

We are building a communication platform that handles millions of concurrent connections and delivers messages in milliseconds. As a System & Network Infrastructure Engineer, you wont just be managing cloud resources; youll be optimizing the fundamental protocols that keep our massively scalable messaging running. You will work on global traffic routing, kernel-level network tuning, and high-performance socket management.

What You'll Do :

- Scale the Network : Architect and maintain a global network to ensure high availability and sub-millisecond latency for real-time messaging.

- Protocol Optimization : Ensure maximum network throughput by optimizing every packetfrom TCP window scaling to TLS handshake efficiency.

- OS & Kernel Tuning : Optimize file descriptors, memory allocation, and the Linux networking stack to ensure maximum performance on each messaging server.

- Infrastructure as Code : Automate the provisioning of global Points of Presence (PoPs) using Terraform and Ansible to maintain a "five nines" (99.999%) uptime.

- Traffic Engineering : Design and manage L4/L7 load balancing (NGINX, HAProxy) and implement routing strategies.

- Security & Privacy : Implement and audit cryptographic protocols and zero-trust networking to ensure user privacy remains uncompromised.

- Observability : Deploy deep-packet inspection tools and monitoring (Prometheus, Grafana, Wireshark, OpenTelemetry, Loki) to diagnose bottlenecks.

The Tech Stack :

- Networking : TCP/IP, UDP, DNS and Anycast routing.

- Infrastructure : GCP (VPC, Cloud Armor, GKE) or AWS equivalents.

- Containers : Docker and Kubernetes (Deep understanding of CNI and Service Mesh).

- Languages : Python, or Bash for high-performance networking tools and automation.

- Load Balancing : HAProxy, NGINX, and Cloud Load Balancers.

- Observability : Prometheus, Grafana, OpenTelemetry, Loki

- CI/CD : GitHub Actions, ArgoCD, jenkins

- Queue : Kafka, Redis

- Infrastructure as code : Terraform

Who You Are :

- Networking Savvy : You have a solid grasp of the OSI model and understand how the internet actually worksfrom 3-way handshakes to BGP peering.

- Performance Obsessed : You hate bloat and latency; you constantly keep optimizing and simplifying even if not asked.

- Linux Expert : You are at home in a Linux-based environment and can debug a kernel panic or a network partition with ease.

- Curious & Scrappy : You have a history of breaking (and fixing) complex systems and likely have a home lab full of networking gear.

Bonus Points :

- Experience with WebSockets, MQTT, or GRPC protocols.

- Certs or deep experience in Advanced Cloud Networking (GCP/AWS).

- Contributions to open-source networking or infrastructure projects.