100% Remote :: Senior Linux Platform Engineer (CPaaS Infrastructure) || 3 rounds of technical interviews
Location : Remote
Duration : 6+ Months
Overview
We are seeking a hands-on Senior Linux Platform Engineer to architect, build, automate, and operate the infrastructure powering a large-scale CPaaS voice platform. This role focuses heavily on Linux systems engineering, infrastructure automation, networking, observability, and scalable cloud infrastructure.
You will help design and maintain the software supply chain and infrastructure lifecycle that transforms source code into production-ready artifacts and deploys them across cloud and customer-hosted environments.
This is a highly technical engineering role focused on reliability, scalability, automation, and performance optimization within high-traffic production environments.
Responsibilities
Linux Platform Engineering
Administer and optimize enterprise Linux environments including RHEL, Rocky Linux, and AlmaLinux
Tune Linux systems for high-performance networking workloads
Write and maintain systemd unit files, startup scripts, and operating system configurations
Troubleshoot production issues across infrastructure, networking, and application layers
Infrastructure Automation
Design and maintain Infrastructure-as-Code using Terraform
Provision and manage cloud infrastructure including networking, compute, security groups, routing, and load balancers
Build reusable and modular Terraform components
Manage Terraform state in collaborative team environments
Configuration Management
Develop and maintain Ansible roles and playbooks
Automate provisioning and configuration of bare-metal and virtual machine environments
Ensure automation is repeatable, idempotent, and production-ready
Release Engineering & Packaging
Build and maintain RPM packages and private repositories
Manage package dependencies, versioning, and deployment processes
Create reproducible build environments using Docker or similar tooling
Support CI/CD pipeline automation and deployment workflows
Cloud & Network Architecture
Design and support cloud infrastructure across AWS and/or Oracle Cloud Infrastructure (OCI)
Configure VPCs, subnets, routing, NAT gateways, and Layer 4 load balancers
Support high-throughput TCP and UDP workloads
Assist with multi-cloud connectivity and hybrid networking solutions
Observability & Reliability
Build and maintain monitoring and observability solutions using Grafana, Prometheus, OpenTelemetry, and related tooling
Monitor infrastructure health, performance, and availability
Develop operational dashboards, alerting, and troubleshooting runbooks
Participate in production support and incident response activities
Documentation & Collaboration
Produce architecture diagrams, operational documentation, and deployment procedures
Partner with engineering, networking, and operations teams to improve platform reliability and scalability
Contribute to technical standards and infrastructure best practices
Required Qualifications
8+ years of experience in Systems Engineering, DevOps, Infrastructure Engineering, or Site Reliability Engineering (SRE)
Expert-level Linux administration experience in production environments
Strong experience with Terraform and Infrastructure-as-Code practices
Strong experience with Ansible or similar configuration management tools
Experience supporting cloud infrastructure in AWS or OCI
Strong networking fundamentals including TCP/IP, routing, NAT, firewalls, and load balancing
Experience supporting high-traffic, production SaaS environments
Proficiency with Bash scripting and at least one additional scripting/programming language such as Python or Go
Experience with CI/CD pipelines, automation, and deployment tooling
Strong troubleshooting and problem-solving skills across infrastructure and application stacks
Experience with monitoring and observability platforms such as Grafana, Prometheus, or OpenTelemetry
Strong written and verbal communication skills
Preferred Qualifications
Experience with CPaaS, VoIP, SIP, RTP, or telecom infrastructure
Familiarity with Jambonz or related voice platforms
Experience with technologies such as FreeSWITCH, drachtio, rtpengine, Redis, MySQL, or Homer
Experience managing Layer 4 load balancing for stateful TCP/UDP traffic
Experience tuning Linux kernels for networking or real-time communications workloads
Experience with RPM packaging and repository management
Experience supporting multi-cloud networking between AWS and OCI
Familiarity with voice quality and observability metrics such as MOS, ASR, and PDD
What Success Looks Like
Infrastructure is automated, scalable, and maintainable
Deployments are reliable and repeatable
Production systems remain stable under heavy load
Monitoring and observability provide rapid insight into platform health
Documentation and operational processes are clear and actionable
Engineering teams can deploy and scale services confidently