At Dstny, we believe that great work begins with great communication.
As a global leader in hybrid work enablement, we make it easy for SMEs to connect, collaborate, and thrive - wherever work happens.
Our solutions combine true mobility, seamless integrations, and the power of AI to deliver exceptional experiences for both customers and employees.
Whether you’re using your mobile, laptop, desk phone, or our market-leading integrations, Dstny is always accessible through your preferred interface.
Headquartered in Brussels, our team of over 1,000 colleagues spans 8 countries and supports more than 4 million users worldwide.
Join us and be part of a company that’s shaping the future of work, Make Hybrid Work together with Dstny.
We are hiring for a Voice Systems Engineer to support and evolve our cloud voice platform, which delivers large‑scale communication services to customers every day.
This role sits at the intersection of platform engineering and operations, with responsibility for maintaining service stability, troubleshooting complex VoIP issues, and driving improvements across the platform. The engineer will work closely with the wider team to enhance runbooks, documentation, and operational workflows, while taking ownership of system health through monitoring and participation in the support rota.
The ideal candidate brings strong expertise in SIP and real‑time communications, with the ability to analyze call flows and resolve issues across carrier‑grade environments. The role involves working with Linux‑based systems, session border controllers, and modern cloud tooling, alongside technologies such as OpenSIPS, Kamailio or other open-source VoIP applications, Azure, Terraform, Ansible, and Grafana.
It is a hands‑on position focused on keeping critical voice infrastructure running reliably, while contributing to the ongoing evolution and scalability of the platform.
What You’ll Do ...
Guide platform evolution and ongoing maintenance
Implementation of new projects, such as a greenfield voice stack setup
Improve runbooks, documentation and workflows
Manage the Linux servers and SBCs
Ensure platform stability through proactive monitoring, creation of useful alerts, and participating in the on-call rota.
Providing third-line support for escalated customer voice issues
What We’re Looking For
Education & Experience
Master’s or bachelor’s degree in computer science, Engineering or a related field (or equivalent practical experience).
5+ years of relevant industry telephony experience, with a proven track record of operating production systems at scale.
Demonstrated experience owning and maintaining a voice stack
Core Skills
Strong knowledge of SIP and RTP
Strong proficiency in SIP call flow analysis, understanding dialog establishment, mid-call signalling, teardown and error responses.
Experience working with open-source SIP servers, such as OpenSIPS, Kamailio or Asterisk
Proficient with Linux server operation and administration
Fluent in English
Technologies We Use
DevOps & Infra: Azure DevOps CI/CD, Ansible, Terraform, MS SQL Server, MySQL, PostgreSQL, Redis
Cloud: Microsoft Azure
Observability: Grafana, Loki, Prometheus
We don’t expect deep expertise in every technology on this list. We do expect that you can quickly get to a working understanding of any of them, form an opinion on the right tool for the job, and help the team make sound long-term choices. At this level, pragmatism, judgement and follow-through matter more than any single tool.
Bonus Points
Experience with AudioCodes SBC
Experience with Microsoft Teams Direct Routing and Operator Connect
Experience building telecom, UCaaS, CPaaS or real-time communication platforms.
Contributions to open-source projects or technical writing / public speaking.
Experience with multi-tenant SaaS platforms serving millions of end users.
Background in security-sensitive environments (GDPR, ISO 27001 or similar).
What We Offer ...
A senior technical role with real scope - your decisions will shape a platform that serves millions of users across Europe.
A compensation package benchmarked for senior / staff-level engineers, including base, bonus and benefits.
Flexible working hours and remote work options — in digitalisation, we should lead by example.
A dedicated training and conference budget to keep your skills sharp.
Experienced colleagues, respectful engineering culture, and customers who trust us with mission-critical services.
A friendly atmosphere with regular team-building activities and company events.
Dstny is a premier European provider of cloud-based business communications solutions. With more than 3 million users, Dstny simplifies communication for companies, partners, and service providers with interactive tools delivered as-a-service across all formats, including voice, video, and chat. Featuring a mobile-first design and easy integration, Dstny's innovative technology and strong local partnerships allow for delivering exceptional user experiences. Headquartered in Brussels, Dstny has ca. 1000 employees in 7 European countries and an annual revenue of ca. €250 million. Learn more at www.dstny.be
