Criterion Networks
Website:
criterionnetworks.com
Job details:
Location: Remote / On-site (flexible)
Experience Level: Senior (3-5 years)
About Criterion Networks
For more than a decade, Criterion has delivered and operationalized Cisco infrastructure for regulated and mission-critical enterprises: secure networking, secure access, campus, data center, cloud, and, increasingly, AI. We lead a category we call Continuous Validation: proving change against the intent you defined before it reaches production, and keeping it aligned as you operate.
Role Summary
We're seeking a Senior Full Stack / Network Engineer/ NetDevops Engineer to bridge application development and infrastructure operations. You will architect, develop, and maintain full-stack solutions that integrate network infrastructure, automation, and customer-facing platforms. This hybrid role combines backend development expertise (Python, Django), modern frontend skills (React), and deep knowledge of enterprise networking platforms (Cisco, Juniper, Palo Alto, SD-WAN, Fortinet).
Key Responsibilities
Development & Architecture· Build RESTful APIs and microservices using Python and Django for network automation and orchestration
· Develop responsive, intuitive web interfaces using React for network operations dashboards and management tools
· Architect solutions for network device integration and multi-vendor management across Cisco, Juniper, Palo Alto, and Fortinet platforms
· Optimize application performance and database design for high-scale network telemetry and event processing
· Cloud native applications like Docker, Kubernetes.
Network Engineering & Integration
· Fair understanding of various network architectures spanning multiple vendor platforms (ACI, Nexus, SD-WAN, Hypershield, ISE, SSE, MCD)
· Develop automation scripts and plugins for network provisioning, configuration management, and troubleshooting
· Build bidirectional integrations with network management platforms (API-driven device onboarding, real-time state synchronization)
· TCP/IP stack, Networking Routing Switching Protocols.
Customer Engagement
· Lead technical discussions with C-level and operations teams to understand infrastructure challenges and requirements
· Present solutions architecture, demonstrating how validation approaches reduce operational risk
· Conduct training sessions on platform features, best practices, and network operations workflows
· Gather customer feedback and translate requirements into product improvements and feature development
· Provide technical escalation support during customer onboarding and production deployments
Validation & Quality
· Design and implement comprehensive testing strategies for network configurations and application integrations
· Build validation test suites that exercise edge cases and failure scenarios in Production-Representative environments
· Contribute to incident response and post-mortems, improving system reliability and customer confidence
Required Skills & Experience
Core Technical Competencies· Python Programming: 4+ years; expert-level fluency with modern frameworks, async patterns, and production deployment practices
· Django Framework: 3+ years building robust, scalable backend services; experience with DRF (Django REST Framework), authentication, and middleware
· React: 3+ years building component-driven UIs; comfort with state management, API integration, and modern tooling (Webpack, npm/yarn)
· Networking Knowledge: Deep understanding of OSI layers, TCP/IP, routing, switching, and security concepts; ability to troubleshoot end-to-end connectivity
· Network Device Experience: 1-2 years of Hands-on experience with at least 3 of the following platforms:
· Cisco: ACI, Nexus (NX-OS), ISE, Intersight, SD-WAN
· Juniper: Junos, MX series, SRX firewalls
· Palo Alto Networks: PA series firewalls, Panorama, Next-Gen firewalls
· SD-WAN: Cisco SD-WAN (Viptela), Fortinet FortiGate, or equivalent
· API & Integration: Experience with REST APIs, GraphQL, webhook-driven architectures; ability to integrate third-party APIs and SDKs
· Database Design: Relational (PostgreSQL, MySQL) and time-series databases (InfluxDB, Prometheus); understanding of indexing, query optimization, and scaling
· DevOps & Infrastructure: Familiarity with containerization (Docker), orchestration (Kubernetes), and CI/CD pipelines (Git, Jenkins, GitLab CI, or GitHub Actions)
· Automation & Scripting: Network automation frameworks (Ansible, Terraform, Python libraries like Netmiko, Napalm, or vendor SDKs)
Preferred Qualifications
- Experience with production validation frameworks and testing methodologies for infrastructure
- Familiarity with AI/ML-driven network operations or anomaly detection platforms
- Background in regulated industries (financial services, healthcare, government) or mission-critical systems
- Cisco certifications (CCNA, CCNP) or equivalent vendor certifications
- Open-source contributions or published technical writing on networking or infrastructure topics
- Experience building platforms or tools that span multiple cloud environments (AWS, Azure, GCP)
- Knowledge of security concepts (encryption, zero-trust, SASE, threat detection)
What We're Looking For
Beyond technical skills, we value engineers who:- Think operationally. You understand that code running in development ≠ code running in production. You design with operational visibility, rollback safety, and customer confidence in mind.
- Bridge disciplines. You're equally comfortable discussing REST API design and network packet flow; you can translate between engineers and network operators.
- Own outcomes. You follow problems from customer discovery through resolution, taking pride in shipping solutions that solve customer problems.
- Stay current. You invest time understanding emerging network technologies, cloud infrastructure shifts, and how your stack evolves alongside industry trends.
- Communicate clearly. You explain technical decisions in business terms to stakeholders; you write clear documentation and code comments.
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