Refining Engineer managing gold and precious - metals refining processes for Umicore, a global advanced materials and recycling group. Supporting trials, process improvements, equipment commissioning, and EHS compliance.
About the role
- Senior Programmable Voice Engineer building FreeSWITCH, Kamailio, Java, and Spring Boot voice infrastructure. Designing scalable CPaaS capabilities for Miratech’s global enterprise clients.
Responsibilities
- Design and develop programmable voice services, APIs, and call-control capabilities for enterprise-scale communications platforms
- Build and extend voice infrastructure using FreeSWITCH, Kamailio, SIP, RTP, WebRTC, and related technologies
- Design and develop backend services and communication APIs using Java and Spring Boot
- Implement call routing, session management, media handling, carrier integrations, and voice traffic processing solutions
- Design highly available and scalable systems capable of handling large volumes of real-time communications traffic
- Troubleshoot complex signaling, media, telephony, and call-quality issues across distributed environments
- Integrate voice services with contact center, routing, digital engagement, CRM, identity, and reporting platforms
- Define non-functional requirements for availability, performance, concurrency, security, privacy, observability, disaster recovery, and supportability
- Review designs and code, identify technical risks, challenge assumptions, and drive pragmatic decisions balancing quality, time, and cost
- Establish engineering standards, reusable patterns, quality gates, documentation expectations, and technology adoption guidance
- Collaborate with client stakeholders, Product, Architecture, QA, DevOps, Security, Operations, and vendors to govern delivery and resolve critical technical issues
Requirements
- 8+ years of software engineering experience, including substantial ownership of architecture and technical delivery for distributed applications
- Deep hands-on expertise with FreeSWITCH and/or Kamailio, including call control, dial plans, media services, ESL, modules, and platform customization
- Experience building API-driven communication platforms, voice services, or CPaaS-style solutions
- Strong knowledge of voice infrastructure and real-time communications, including SIP, RTP, WebRTC, session control, media handling, and telephony troubleshooting
- Expert-level hands-on experience with Java, Spring Boot, microservices, REST APIs, persistence, security, testing, and performance engineering
- Deep understanding of API-first design, event-driven architecture, messaging, distributed systems, and cloud-native engineering
- Experience with PostgreSQL or comparable relational databases, data modeling, integration data flows, and transactional design
- Hands-on experience with contact center or CX platforms and the operational concepts behind customer routing and engagement
- Excellent communication skills, including the ability to produce clear technical documentation and lead client-facing workshops
- Experience with OpenSIPS, Asterisk, Twilio, SignalWire, or comparable communications platforms is nice to have
- Experience building routing engines, IVR platforms, voice bots, or omnichannel engagement services is nice to have
- Experience with Genesys, NICE, Five9, Amazon Connect, Cisco, Avaya, or comparable contact center platforms is nice to have
- Familiarity with Kafka or RabbitMQ, Kubernetes, Jenkins, observability platforms, API gateways, and security architecture is nice to have
- Practical experience with AI-assisted software development or AI-enabled solutions, including Claude or GitHub Copilot, is a plus
Benefits
- Comprehensive compensation and benefits package
- Health insurance
- Relocation program
- Remote work flexibility
- Professional development opportunities
- Certification programs
- Mentorship and talent investment programs
- Internal mobility opportunities
- Internship opportunities
- Collaboration on impactful projects for top global clients
- Inclusive and supportive work environment
- Open communication
- Regular team-building company social events
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
No Education Requirement
Tech skills
Location requirements
Report this job
Found something wrong with the page? Please let us know by submitting a report below.
Senior Network Delivery Engineer leading secure, automated enterprise network delivery for Export Development Canada. Designing cloud, data centre, campus, and Zero Trust connectivity.
Lead Project Engineer coordinating New Flyer bus engineering projects from design through production launch. Managing design reviews, supplier approvals, testing, documentation, and cross - functional execution.
Contract Acoustic Engineer advising MistyWest hardware teams and clients on microphone integration, acoustic paths, and signal processing. Supporting feasibility, proposals, and acoustic design delivery.
Forward Deployed Engineer helping Nango, an AI integration platform, build customer integrations. Coding full - stack improvements while leading technical evaluations, pairing sessions, and production support.
Tunnel Engineer supporting GHD’s global engineering services practice through tunnel design, analysis, and reporting. Contributing to transit and underground infrastructure projects across Canada and internationally.
Ingénieur·e en protection incendie chez EXP, firme de génie - conseil, d’ingénierie et d’architecture. Conception de systèmes, calculs hydrauliques et coordination multidisciplinaire pour des bâtiments plus sécuritaires.
Project Engineer leading ABB MV electrical systems for mining grinding applications. Designing, commissioning, and supporting drives, motors, transformers, and control systems.
Relay Settings Engineer developing protective relay settings and coordination studies. Supporting renewable energy and power - system projects across U.S. and Canadian locations.
Project Engineering Intern supporting DEME’s marine, civil, environmental, and infrastructure projects. Coordinating field operations, planning, calculations, reporting, and technical assessments.