Session Border Controller Engineer Jobs

1 job found

1mo ago

Senior Software Engineer

IQ Ventures Dublin, OH

Dublin, OH

1mo ago Closed

Full time Backend Developer Senior Artificial Intelligence

This position is no longer accepting applications (closed Jul 17, 2026).

Job Description

Based in Dublin, Ohio, the Senior Software Engineer will design, implement, and operate real-time VoIP and communication services, with a focus on AI-assisted development and strong engineering fundamentals. The role requires hands-on production software experience, VoIP expertise, and collaboration on architecture and tooling.

Responsibilities

Design, implement, and sustain VoIP and real-time communication services, including call routing, signaling paths, media processing, and the surrounding infrastructure.
Integrate with carriers, SIP trunks, and telephony providers, diagnosing and resolving issues along the signaling and media journey.
Identify and remediate real-time quality concerns such as latency, jitter, packet loss, one-way audio, and call setup failures, using packet captures and log analysis.
Deliver clean, thoroughly tested features from design through production, with on-call responsibility for support and incident response.
Leverage current AI assisted coding tools for daily development tasks such as generation, refactoring, review, and testing, while applying sound engineering judgment to all deployments.
Participate in architectural decisions, review code from teammates and AI-generated contributions, and promote responsible adoption of new tooling within the team.
Enhance observability, reliability, and security across the communications stack.

Requirements

Minimum five years of professional software development experience delivering production systems, with strong fundamentals in data structures, systems design, debugging, and testing.
Hands-on, up-to-date proficiency with AI coding tools for real production work, including multi-file changes, refactors, test generation, and code reviews, and the ability to verify and own outputs amid their failure modes.
Experience with signaling protocols, especially SIP; familiarity with H.323 or other protocols is a plus.
Knowledge of media transport protocols such as RTP/SRTP and RTCP, and familiarity with codecs like G.711, G.722, and Opus.
Experience with WebRTC for browser- and app-based real-time communication.
Background with PBX or softswitch platforms such as Asterisk, FreeSWITCH, or Kamailio.
Experience with Session Border Controllers (SBCs), NAT traversal (STUN/TURN/ICE), and QoS concepts.
Carrier and SIP trunk integration, number provisioning, and call routing experience.
Proficiency across Go and Python on the backend, and Vue on the frontend, with strong experience in at least two of these and familiarity with the third.
Solid networking fundamentals including TCP/UDP, DNS, TLS, firewalls/NAT, and the ability to read packet captures using tools such as Wireshark or sngrep.
Experience owning code in production, including monitoring, on-call duties, and incident response.
Strong written and verbal communication skills.

Technologies

Claude Code
Cursor
GitHub Copilot
Codex
Windsurf
Go / Golang
Python
Vue
SIP
H.323
WebRTC
RTP
SRTP
RTCP
G.711
G.722
Opus
Asterisk
FreeSWITCH
Kamailio
SBC
Session Border Controller
NAT traversal
STUN
TURN
ICE
SIP trunk
SIP trunks
TCP
UDP
DNS
TLS
Firewalls
Wireshark
sngrep
AWS
GCP
Azure
Kubernetes
Terraform

Benefits

401(k)
401(k) matching
Dental insurance
Employee assistance program
Flexible schedule
Flexible spending account
Health insurance
Health savings account
Life insurance
Paid time off
Parental leave
Referral program
Retirement plan
Vision insurance

Experience

Preferred: 4+ years of software development experience.

Ability to Commute

On-site role in Dublin, Ohio 43017 is required.

Nice to Have

Experience with additional languages in the broader stack (for example, C/C++, Rust, TypeScript, SQL).
Familiarity with the Model Context Protocol (MCP) and integrating AI tools into internal systems and workflows.
Experience scaling real-time media Infrastructure, including media servers, transcoding, and conferencing/SFUs.
Telecom regulatory awareness including E911, STIR/SHAKEN, and number portability.
Cloud and infrastructure as code experience (AWS, GCP, or Azure; Kubernetes; Terraform).
Open source contributions in telephony or real-time projects.
Security-focused experience relevant to telephony, such as toll fraud prevention, encryption, and system hardening.

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