Senior Voice Solutions Engineer

About us @Symphony

We’ve spent the last 10 years building a communication and markets technology company, powered by interconnected platforms: messaging, voice, directory and analytics.  Over 1000 institutions use our modular technology built for global finance. Security is in our DNA with uncompromising data protection, end-to-end encryption and resilient architecture, all created on a foundation of trust with our customers . 

But that was only chapter one. We’re now building on our purpose-built network, expanding AI-powered, real-time collaboration, redefining flexibility with fully cloud-native software with our trader voice product, and rethinking the industry’s approach to identity verification, connection and intelligence. .

The opportunity and our ambition are huge. But we need passionate, dedicated individuals to get there. At Symphony we work hard and fast. Our unique blend of technology and financial services makes it an environment you won't get elsewhere.

Role Description:

We are seeking a highly skilled and customer-facing Voice Solutions Engineer with expertise in Oracle Session Border Controllers (SBCs) and voice trading technologies. This role combines technical design, deployment, and troubleshooting with pre- and post-sales engineering support, ensuring our customers achieve seamless integration of Cloud9’s voice products across complex enterprise and trading environments.

The ideal candidate is a true technologist who thrives at the intersection of telecoms engineering and customer engagement, with a strong background in SIP, RTP, and VoIP architectures, alongside cloud-based voice and networking solutions.

Responsibilities:

• Pre- & Post-Sales Support
  • Act as a trusted technical advisor during the sales cycle, providing design input and solution guidance.
  • Deliver post-sales implementation support, ensuring smooth deployment and customer satisfaction. Assist in customer lab setups, integration testing, and network/firewall proxy configuration.
  • Work closely with internal Product, Support, Development, and DevOps teams to represent customer needs.
• SBC & Voice Infrastructure Engineering
  • Design, configure, and maintain Oracle SBCs (Acme Packet series) for SIP trunking, interconnect, and media relay.
  • Develop and deploy custom scripts and configuration templates using ERE, ACLI, and XML provisioning.
  • Troubleshoot signalling and media path issues using Wireshark, Oracle logs, and protocol traces.
  • Integrate SBCs with PBXs, softswitches, and SIP platforms (e.g., Fusion, Asterisk, CUCM, Microsoft Teams Direct Routing)
  • Implement security policies including DoS protection, topology hiding, and TLS/SRTP encryption.
  • Collaborate with network and voice teams to ensure seamless call routing, codec negotiation, and QoS.
  • Document workflows, configuration standards, and onboarding guides for internal and client-facing use.

Required Qualifications:

• 5+ years working with Oracle SBCs (Acme Packet 3900/4500 or virtualized platforms) including installation, configuration, upgrade, migration, troubleshooting and maintenance.
• Strong understanding of SIP/TLS, SDP, RTP/STRP, and NAT traversal techniques
• Experience with SIP trunking, number normalization, and codec negotiation (G.711, G.729, Opus).
• Experience with handling and troubleshooting security certificates.
• Proficiency in scripting languages (Python, Bash, or similar) for automation and testing
• Familiarity with network protocols (TCP/IP, DNS, DHCP) and firewall/NAT configurations
• Firsthand experience with packet inspection tools (Wireshark, sngrep, pyshark)
• Ability to interpret call flows, debug SIP dialogs, and resolve interoperability issues.
• Excellent documentation and communication skills, especially in client-facing scenarios

Desirable Extras:

• Oracle SBC certification (e.g., Oracle Communications Session Border Controller Implementation Specialist)
• Telecoms / Trading systems experience.
• Familiarity with SSO/SAML2.0 technology.
• Experience with cloud-hosted SBCs (OCI, Azure, AWS)
• Familiarity with voice recording, compliance logging.
• Exposure to Barix Instreamer, FFmpeg, or other RTP multicast tools

Compensation:

• Competitive salary
• Bonus plan
• Benefits and Perks vary based on location.

Benefits and Perks:

• Regional specific competitive benefits
• Build your own Benefits (BYOB) perk
• Many other fun and exciting benefits and activities!

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment.