Top Linux Jobs in Ottawa

Join an Agile team to design, code, test, and integrate radio platform and Open RAN software for 5G. Develop production-grade code, unit and automated tests, troubleshoot lab integration issues, and review designs and test plans. Collaborate with customer support and apply AI techniques to improve development and testing workflows.

Design, develop, debug, and test cloud-connected firmware features (C/C++ and Go). Support and scale IoT device fleet, build observability and rollout metrics, triage customer/QA issues, and collaborate cross-functionally to deliver production-ready firmware.

Manage and scale Enverus' global AWS infrastructure, automate deployments and CI/CD, ensure high uptime, collaborate with developers to enable zero-downtime releases, participate in on-call rotations, and improve operational practices.

Lead detection, incident response, and digital forensics across macOS/Windows/Linux; act as Incident Commander, triage alerts, use SIEM, build investigation scripts and automated runbooks, collaborate with stakeholders on insider threat and security operations improvements.

Lead AppSec efforts across product, platform, and AI features by owning secure SDLC, performing threat modeling and deep code reviews, driving vulnerability management and remediation, building AppSec tooling and automations (including AI-assisted workflows), and enabling engineering teams with secure design guidance and training.

Provide technical support for Self-managed and GitLab.com customers via tickets and calls; troubleshoot Linux systems and GitLab installations; write bug reports, documentation, and fixes; collaborate with Product, Development, Infrastructure, and Customer Success; participate in on-call rotations and hiring processes.

Design, implement, and maintain on-premises CI/CD pipelines and build infrastructure using GitLab and Jenkins. Automate builds, testing, packaging, deployments, and release management. Administer repositories, manage runners/agents and artifact repositories, coordinate multi-team releases, maintain software baselines and traceability, and support hotfix/emergency releases. Monitor pipeline performance and troubleshooting build reliability and performance.

The Senior Backend Developer will design and implement backend systems for UCaaS products, collaborating with teams to enhance service reliability and performance, while mentoring junior developers.

Lead and mentor a software team developing embedded software and drivers for RLS Interface Management Modules. Oversee design, testing, delivery, vendor management, and factory integration. Coordinate cross-functional and global teams, improve processes, and ensure software quality and hardware/software calibration for photonic layer 0 systems.

Lead design and development of SONiC-based platform architecture for optical circuit switches, including SAI enablement, containerized services, Debian packaging, release management, telemetry/observability, fault/event frameworks, and cross-functional integration. Contribute to upstream SONiC/OCP and drive platform bring-up and stabilisation across releases.

As a Linux Systems Administrator, you'll provide enterprise-level support and manage Linux/Windows infrastructure, troubleshoot issues, maintain security, and participate in a 24x7 support rotation.

Hands-on technical contributor for RELEX implementations: build and support integrations, perform data transformations and validation, set up environments, troubleshoot issues with client IT, run technical workshops, and follow RELEX best practices to ensure clean data flows and stable SaaS deployments.

Own and evolve Azure-based cloud infrastructure and GitLab CI/CD for a polyglot monorepo. Design/maintain AKS, Terraform modules, Docker/Helm artifacts, automation scripts, and observability. Ensure reliability, security, and scalable deployments while collaborating with multiple engineering teams and maintaining documentation and runbooks.

Provide on-site Data Centre and infrastructure administration supporting geospatial systems: manage servers, virtualization, storage, networking, Windows and Unix/Linux OS, SCCM/SCOM, Exchange, GIS platforms (ArcGIS), backups/DR, testing, documentation, and end-user support.

Manage and maintain Linux-based HPC CPU/GPU clusters (hardware, schedulers, parallel storage), support researchers with application builds and runtime debugging, troubleshoot CUDA/GPU and scheduler issues, manage configuration (Git, Ansible, MS DevOps), package management, and document processes while reporting progress to technical authority.

The Site Reliability Engineer at Sectigo ensures the reliability of services by implementing solutions using IaC, automation, and monitoring tools, while collaborating with engineering teams to enhance operations.

The role involves leading a technical solutions team, ensuring high-quality service delivery, troubleshooting issues, and building customer relationships while communicating effectively with stakeholders.

The IT Systems Engineer will provide L1 support for a Cyber Range platform, undergoing training and performing technical support duties such as incident triage and basic troubleshooting.

The Senior Systems and Software Architect will design, develop, and test embedded software systems for LEO satellites, collaborating with cross-functional teams and ensuring high-quality deliverables.

Design, deploy, and operate large-scale distributed systems. Operate Kubernetes clusters and Istio, automate workflows with Go/Python/shell, build observability with Prometheus/Grafana/Loki, troubleshoot networking/storage/performance, support AI/ML infrastructure, and participate in on-call rotations and postmortems to improve reliability.

Develop high-performance cloud and container technologies for Edge computing, using Kubernetes and related projects. Collaborate in automated testing and contribute to open-source StarlingX. Ensure fault tolerance and high availability in system architecture.

Design, develop, test, and optimize embedded C/C++ software for high-performance networking modules on Linux and VxWorks. Implement real-time OS and networking protocol functionality, create automated tests, troubleshoot performance and reliability issues, and collaborate with factory teams, peer engineers, and vendors for delivery and calibration.

Join Entrust's PKI and Cryptography R&D team to design, implement, and test security‑critical backend components. Work on certificate and key management, secure communications, cryptographic algorithms and protocols, and post‑quantum cryptography prototyping using C/C++/Java in a hybrid Ottawa environment.

Design and implement secure system architectures and controls for Air & Naval systems. Conduct threat modeling, vulnerability assessments and technical security testing of OS, containerized environments and applications. Ensure compliance with NIST/ITSG/DISA/FIPS frameworks, produce SA&A artifacts (SSP, risk assessments, test reports), develop Security Test Procedures, support audits, and mentor junior staff.

Design and implement cybersecurity strategies and system security architectures for Air & Naval systems. Conduct threat modeling, vulnerability assessments and technical security testing of OS, containers and applications. Develop Security Test Procedures, author SA&A artifacts (SSPs, risk assessments, test reports), support audits, and mentor junior staff. Ensure compliance with NIST RMF, ITSG-33, DISA STIGs, FIPS and maintain SBOMs with CVE mapping.