Staff Software Engineer-Voice Platform (SIP/VoIP)

Be the one building AI-powered experiences where they matter most.
At Genesys, we help organizations create better customer experiences through AI-powered experience orchestration. Our platform connects people, systems, data and AI to help organizations deliver more personalized service, improve operational efficiency and build stronger customer relationships.
Help build, support and operate technology used by more than 8,000 organizations in over 100 countries – moving AI from possibility to production in real-world enterprise environments every day.
Job Title: Staff Software Engineer – Voice Platform
Summary:
We are seeking a Staff Software Engineer to join our Voice Platform team as a hands-on technical leader for high-performance, network-facing services that power real-time voice communications for Genesys Cloud contact centers worldwide. This is an exciting opportunity for an experienced engineer who is proficient in C, strong in Java, networking and Linux, and motivated to grow deep expertise in SIP/VoIP and voice-platform systems.
You will work across systems-level software and cloud backend services, influence architecture and engineering practices, and help deliver reliable, scalable voice capabilities used by enterprise customers at global scale. Prior SIP/VoIP or contact-center experience is a plus, not a requirement. If you enjoy complex distributed systems, production ownership, and mentoring others while continuing to learn a specialized domain, this is a high-impact opportunity.
Key Responsibilities:
The primary responsibilities for this role include (but are not limited to):
Lead the design, development, and delivery of scalable network and voice-platform services that support real-time communications with high reliability and operational excellence.
Develop and maintain systems software in C, including work with network-facing and open-source platform components used in real-time communications.
Design and implement cloud backend services in Java and contribute across related platform services as needed.
Build and operate services on AWS, ensuring scalable, observable, and production-ready solutions.
Apply strong networking and Linux systems skills to develop, integrate, and troubleshoot real-time communications workloads.
Build fluency in SIP/VoIP and Genesys voice-platform concepts, and help the team apply them effectively.
Lead troubleshooting of complex production issues spanning networking, systems, and service layers; drive root-cause analysis and lasting fixes.
Partner with product, architecture, DevOps, QA, security, and operations to translate business and platform needs into durable technical solutions.
Define and promote engineering best practices for design, code quality, CI/CD, testing, monitoring, logging, tracing, and production operations.
Mentor engineers through design reviews, code reviews, incident response, and hands-on technical guidance.
Drive continuous improvement in system performance, availability, scalability, fault tolerance, and maintainability across the voice platform.
Minimum Requirements:
8+ years of professional software engineering experience, including senior/lead-level impact
Hands-on proficiency in C for systems or network-oriented software
Hands-on proficiency in Java for backend service development
Strong networking fundamentals (TCP/IP, UDP, TLS, sockets, and network debugging)
Strong Linux experience in development and production environments
Experience designing, building, and supporting services in cloud environments (preferably AWS)
Experience leading technical initiatives from architecture through production delivery
Demonstrated ability to mentor engineers and influence technical direction
Strong communication skills across engineering, product, and operations
Experience supporting mission-critical, high-availability production systems
Ability to learn SIP/VoIP and real-time communications concepts quickly
Ability to balance quality, performance, security, and delivery timelines
Desirable Skills:
Spring Boot and web application development
Broader AWS experience (ECS/EKS, API Gateway, SQS/SNS, DynamoDB/RDS, CloudWatch, IAM, CloudFormation/CDK/Terraform)
Experience with SIP, VoIP, or open-source telecom platforms (e.g. OpenSIPS, Kamailio, Asterisk, FreeSWITCH)
Genesys Cloud CX, contact-center, carrier, CCaaS, UCaaS, or CPaaS experience
Multi-region deployments, Kubernetes, service mesh, and zero-downtime release practices
Security for networked systems (TLS, mTLS, SRTP, IAM, network segmentation)
Strong observability and incident-leadership background
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Working at Genesys
AI at enterprise scale – Build, support and operate AI-powered technology used by more than 8,000 organizations worldwide. 150+ new AI features were released in the last fiscal year.
A flexible-first culture – Join a global team of nearly 7,000 employees with flexible ways of working designed to help people do their best work.
Growth in the AI era – Build future-ready skills through mentorship, learning programs, leadership development and education support.
Time to recharge and give back – Benefits include paid volunteer time, August Free Fridays, well-being resources and regionally tailored programs for employees and their families.
Recognized globally – Genesys is Great Place to Work® certified in 17 countries and 94% of employees are proud to tell others they work at Genesys.
Learn more about our culture, AI innovation and sustainability commitments through our Careers site and Sustainability Report.
What Happens After You Apply
After you apply, here's what you can typically expect:
Our Talent Acquisition team reviews your application with the hiring team.
A Talent Acquisition Partner will review your application and, if your background is aligned, schedule a Zoom interview.
Next, you'll meet the hiring manager and other members of the interview team.
We aim to keep the process focused and respectful of your time, with no more than five interviews in most cases.
After interviews are complete, our team will follow up with the final steps.
Every application is reviewed by a person. Response times may vary by role and location, but our team will keep you informed throughout the process.
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About Genesys:
Genesys® empowers more than 8,000 organizations worldwide to create the best customer and employee experiences. Genesys Cloud™ is the Agentic Orchestration Platform that securely connects people, systems, data and AI across the enterprise with built-in governance and control. As a result, organizations can drive customer loyalty, growth and retention while increasing operational efficiency and teamwork across human and AI workforces. To learn more, visit www.genesys.ai.