Vonage
Tech / AI / Software
SeniorBackendEngineer–Identity&SecurityPlatform
Neural analysis suggests this role is
optimal for Senior candidates.
“Senior Backend Engineer – Identity & Security Platform at Vonage. Skills: Node.js, AWS, Microservices architecture, PostgreSQL, Authentication, Authorization. Design, develop, and maintain authentication and authorization microservices (backend-heavy, full-stack) serving the VBC and VCC platforms. Take full ownership of features end-to-end — from requirement kick-off and solution design through implementation, code review, testing, production deployment, and post-deploy monitoring”
What You'll Achieve.
keep that door secure, reliable, and scalable for hundreds of thousands of business users worldwide; processing hundreds of thousands of requests per minute in production; affect the security and availability of Vonage's entire product suite; real impact visible at scale from day one; enhance personal productivity, code quality, and delivery speed
Industry & Context.
investigating issues; driving root cause analysis
on-call rotation
What They're Looking For.
Must Have
5+ years of professional software engineering experience, with a track record of delivering production-quality software in a team environment, Full-Stack developer with a server-side orientation — comfortable owning backend services while able to contribute to frontend when needed, Proficiency in Node.js — ability to design, build, and maintain scalable backend services in JavaScript/TypeScript, Hands-on AWS experience — working knowledge of core AWS services (EKS/Kubernetes, EC2, Secrets Manager, WAF, S3, CloudFront, Lambda, ElastiCache), Microservices architecture — experience designing and operating distributed microservice systems, including service-to-service communication, event-driven patterns (Kafka), and API design, PostgreSQL / relational databases — proficiency in schema design, query optimization, and database best practices, AI-augmented development — active user of AI coding assistants (GitHub Copilot, Claude Code, Cursor, or equivalent) as part of everyday development workflow, software engineering fundamentals — SOLID principles, design patterns, clean code, unit and integration testing
Nice to Have
Authentication & Authorization deep knowledge — hands-on experience implementing OAuth 2.0, OIDC, SAML, JWT, MFA, SSO, SCIM, or RBAC/ABAC systems, NestJS — experience building backend services with the NestJS framework (the team's emerging standard for VCC services), DevOps practices — familiarity with CI/CD pipelines, GitHub Actions, infrastructure-as-code (Terraform / CloudFormation / Helm charts), and Kubernetes manifests, C# and/or Java— working knowledge of either language, useful for contributing to legacy components and cross-team integrations
What You'll Do.
and maintain authentication and authorization microservices (backend-heavy
full-stack) serving the VBC and VCC platforms
Take full ownership of features end-to-end — from requirement kick-off and solution design through implementation
production deployment
and post-deploy monitoring
Manage production deployments using CI/CD pipelines (GitHub Actions / Bolt)
including smoke tests
log analysis (Kibana / Grafana)
and incident response
Implement and maintain security-critical flows including OAuth 2.0
and inter-service authentication patterns
Write and maintain technical documentation — architecture decision records
and knowledge-transfer materials
Participate in on-call rotation (OpsGenie)
responding to production alerts
and driving root cause analysis
Leverage AI-assisted development tools (e.g.
Claude Code) to enhance personal productivity
How You'll Work.
Team & Collaboration
Participate actively in Agile ceremonies — daily stand-ups, sprint planning, retrospectives, and design discussions — contributing concrete technical insights and surfacing risks early; code review; knowledge-transfer materials
Process & Methodology
Agile ceremonies
Full Job Description
Join Vonage and help us innovate cloud communications for businesses worldwide! Vonage Applications Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences. Why this role matters: Authentication and identity are the front door to every Vonage product — and the Cerberus team is the engineering team that keeps that door secure, reliable, and scalable for hundreds of thousands of business users worldwide. Sitting at the heart of the Vonage Business Communications and Vonage Contact Center platforms, we own the full identity stack — OAuth 2.0 / OIDC, SSO, MFA, SCIM, RBAC/ABAC, fraud detection, and more — processing hundreds of thousands of requests per minute in production. This is not a supporting role; it is core infrastructure where a single decision can affect the security and availability of Vonage's entire product suite. As a Software Engineer joining a team of 6 senior engineers, you will take end-to-end ownership of mission-critical microservices, contribute to the modernization of the VCC identity platform, and help shape the technical direction of a fast-moving, security-first team — with real impact visible at scale from day one. Your key responsibilities: Design, develop, and maintain authentication and authorization microservices (backend-heavy, full-stack) serving the VBC and VCC platforms Take full ownership of features end-to-end — from requirement kick-off and solution design through implementation, code review, testing, production deployment, and post-deploy monitoring Participate actively in Agile ceremonies — daily stand-ups, sprint planning, retrospectives, and design discussions — contributing concrete technical insights and surfacing risks early Manage pro
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