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VoIP Solution Engineer

VoIP Solution Engineer

ProximusBE
10 dagen geleden
Functieomschrijving

BICS is connecting the world by creating reliable and secure mobile experiences anytime, anywhere . We are a leading international communications enabler, one of the key global voice carriers and the leading provider of mobile data services worldwide.

Our solutions are essential for supporting the modern lifestyle of today’s device-hungry consumer – from global mobile connectivity, seamless roaming experiences, fraud prevention and authentication, to global messaging and the Internet of Things.

Headquarters in Brussels with a strong presence in Africa, Americas, Asia, Europe and Middle East. We have regional offices in Madrid, Dubai, and Singapore, a satellite office in Beijing and local representation in Bern, New Jersey, Miami, Montevideo, and Toronto.

Pioneering into the future of Next Generation communications. We have achieved a series of World’s Firsts successes with the launch of the first LTE Roaming relation or the first VoLTE International call between Europe and Asia, to name a few.

With a diverse and multicultural team of about 600 employees, we continuously strive to provide customers with the highest level of quality, reliability, and interoperability, enabling them to maximize their end-user value.

Task Description

BICS is looking for a skilled and motivated Engineer to support our Cloud Communication value stream in delivering state-of-the-art solutions.

Within Cloud Communication , we support global enterprises and leading service or XaaS providers with their international cloud telephony needs. Our platform delivers programmable voice and messaging services, global number provisioning, and SIP trunking—enabling secure, scalable, and compliant communications worldwide. These API-driven solutions help modernize communications infrastructure, ensuring high availability, quality, and performance across our global network.

The ideal candidate will have a solid understanding of general voice technologies and hands-on experience with SIP trunking implementations .

Based on business, technical, operational, and regulatory requirements, value streams at BICS are responsible for translating innovative concepts into deployable network solutions and OSS systems within the Cloud Communication domain—designing, developing, and integrating them into the operational environment to ensure readiness, scalability, and performance.

Our value streams think outside the box and challenge conventional approaches. We focus on delivering high-performance, scalable solutions capable of processing large volumes of data—meeting the demands of a rapidly evolving communications landscape.

BICS is a global leader in international communication services , providing Voice , SMS , and Capacity solutions that connect people and devices across the world.

Roles and Responsibilities

  • Lead and support the design, development, and deployment of network and OSS solutions, addressing business, technical, operational (, provisioning, service assurance), and regulatory requirements.
  • Deliver solutions that meet objectives within scope, time, and budget, balancing third-party solutions with in-house development and integration.
  • Drive platform design end-to-end, from requirement gathering to production launch.
  • Evaluate system performance, recommending and implementing improvements to enhance reliability, efficiency, and capabilities.
  • Analyze technical solutions in line with evolving business and operational needs, considering cost, quality, and time-to-market. Recommend future evolution paths leveraging current and emerging technologies.
  • Collaborate across delivery projects (small to medium scale) with stakeholders including product management, operations, suppliers, and IT / network teams.
  • Oversee design, implementation, testing, and rollout of platforms and OSS systems.
  • Document technical designs, procedures, and impact analyses to support operational teams.
  • Work closely with operational teams to ensure smooth implementation and transition of technical solutions.
  • Lead Voice API integration projects, especially within the FreeSWITCH ecosystem.

Your Profile

Required Technical Skills

  • Strong hands-on experience with FreeSWITCH (dial plans, scripting, SIP stack, etc.).
  • Solid understanding of network switching / routing within Unified Communications and VoIP contexts.
  • Experience with multi-platform unified communications and cloud telephony.
  • Proficiency in SIP, HTTP, and API technologies.
  • Understanding of secure VoIP environments, including API security, SSL / TLS.
  • Strong Unix / Linux background.
  • Analytical and troubleshooting skills using tools like Wireshark, Splunk

    • Required Soft Skills

  • Fluent in written and spoken English.
  • Strong ownership and timely delivery mindset.
  • Ability to communicate technical topics to diverse audiences.
  • Effective communication and presentation skills.
  • Self-driven, quick learner of existing and new technologies.
  • Collaborative team player with a proactive attitude.
  • Strong organization, planning, and problem-solving abilities.
  • Customer-focused mindset.
  • Comfortable with agile development environments and tools.

    • Nice to Have

  • Experience in international wholesale telecom.
  • Knowledge of Metaswitch Perimeta SBC, Ribbon SBC (SBC5K, SWe), Softswitch, and Titan.
  • Familiarity with ENUM, INAP, SIP Registrar / Authentication.
  • Experience with LRF (Location Retrieval Function) and emergency call handling.
  • Understanding of STIR / SHAKEN frameworks.
  • Knowledge of BYOC, PSTN, and contact center architectures.
  • Familiarity with unified communication platforms (, Microsoft Teams).
  • Good grasp of telephony fundamentals (PBX, circuits, dial plans, routing).

    • Why BICS?

  • We are international, diverse, and inclusive : You will be part of a very diverse and international team. The BICS team counts around 55 different nationalities. Get to know about other cultures while interacting with your colleagues globally.
  • Our company culture is strong : You will be working in a dynamic environment where we encourage our people to embrace a Growth Mindset and empower them daily to bring new ideas, experiment and collaborate towards efficient innovation.
  • We invest in our people : From talent programs and mentorship possibilities to Learning and Development channels, but also a strong emphasis on internal mobility, we foster an environment where upskilling, career coaching and leadership development will help you maximize your potential.
  • Remote and flexible working are part of our DNA : We believe in the power of flexibility and autonomy. Our people make their own work arrangements, they generally come to the office 2 days a week and are free to work from home the rest. We also allow our employees to work 10 working days a year from their travel destination.
  • Our list of benefits is exhaustive : Because we know the offer makes a difference, our salary package is more than attractive : A competitive base salary and short-term incentives (a yearly bonus linked to individual and company performance) Comprehensive insurances including hospitalization insurance, outpatient care insurance, life insurance, disability insurance and travel insurance, fully funded by BICS A supplementary pension plan, fully funded by BICS A flexible mobility package including a company car or car allowance, a mobility budget for flexible commuting including a fuel card, bike lease options, etc A telco offer including free internet at home, budget for a mobile phone, a monthly phone plan and many discounts on the Proximus products catalog Additional benefits such as meal and eco vouchers, 32 vacation days, corporate discounts through Benefits@Work,… Wellbeing at work : yoga and pilates classes, corporate events, etc.

    • Get a flavour of Proximus Global activities by looking at our video :

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    Solution Engineer • BE