5+ years of experience in systems engineering, infrastructure operations, or VOIP engineering., Strong knowledge of VOIP systems like Asterisk, 3CX, and SIP protocols., Proficient in Linux systems, virtualization, Docker, and networking concepts related to VOIP., Business level proficiency in English (B2 or above)..
Key responsibilities:
Operate and enhance the VOIP infrastructure, including Asterisk-based systems and 3CX.
Maintain and evolve the underlying infrastructure, including Linux servers and Docker containers.
Design scalable solutions for call routing and monitoring, and troubleshoot complex VOIP issues.
Collaborate with the VOIP team to automate deployment and contribute to infrastructure reliability.
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We are on a mission to make the world of finance more accessible, engaging and useful.
With a focus on simplicity, ease of use, speed and power – we aim to develop the best trading service on the market. We are a fintech company with deep expertise in trading, markets, blockchain, technology, customer centricity and financial regulation.
We currently live across Europe and beyond in 23 languages. We provide great customer service to accompany our smart news feed, intelligent financial content, a broad range of education, and a wide range of markets for our clients to trade. Capital Com (UK) Limited is authorised and regulated by the Financial Conduct Authority (FRN 793714). Capital Com SV Investments Limited is authorised and regulated by the Cyprus Securities and Exchange Commission (Licence No. 319/17). Capital Com Australia Limited is registered in Australia and regulated by the Australian Securities and Investments Commission (ASIC). AFSL 513393.
Experienced, talented and knowledgeable, our Capital.com team works to innovate in the world of finance and customer-centricity. We do the hard work to make complicated subjects easier to understand and complex tasks effortless to achieve.
We are always looking for like-minded people and are ready to seize the opportunity to cooperate with leaders in the financial ecosystem – Universities, Technology Partners, Innovators, Regulators, or Complementary Businesses.
Join our team: capital.com/careers
CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. 76% of retail investor accounts lose money when trading CFDs with this provider. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
📊 We are a leading trading platform that is ambitiously expanding to the four corners of the globe. Our top-rated products have won prestigious industry awards for their cutting-edge technology and seamless client experience. We deliver only the best, so we are always in search of the best people to join our ever-growing talented team.
🔎 We’re looking for a mid to senior-level VOIP & Infrastructure Engineer to help us build, maintain, and evolve our internal telephony infrastructure. This role sits at the intersection of VOIP systems and infrastructure engineering - ideal for someone who enjoys working across systems and digging into both application and platform layers.
Responsibilities
Operate and improve our VOIP infrastructure, including Asterisk-based systems, 3CX, and supporting services.
Maintain and evolve the underlying infrastructure: Linux servers, virtual machines, Docker containers, network config, and monitoring.
Design and implement scalable, resilient solutions for call routing, recording, monitoring, and integrations.
Troubleshoot complex VOIP and infrastructure issues across layers (SIP, RTP, NAT, system performance, disk, etc.).
Collaborate with the VOIP team to automate deployment, configuration, and monitoring of VOIP components.
Own or contribute to infrastructure reliability, backup strategies, system upgrades, and security hardening.
Requirements
5+ years of professional experience in systems engineering, infrastructure operations, VOIP engineering, or a similar technical role.
Strong experience with either:
VOIP systems (e.g., Asterisk, FreePBX, FreeSWITCH, 3CX, Kamailio, SIP protocols, RTP, dial plans), OR
Proven ability to operate and troubleshoot production systems, including performance issues, outages, and cross-layer failures.
Strong foundation in networking, particularly where it intersects with VOIP (SIP, RTP, NAT traversal, QoS, firewalls, etc.).
Prior experience working in environments where engineers own systems end-to-end is strongly preferred.
Comfort working in a production environment with systems you own end-to-end.
Solid troubleshooting skills and a deep interest in how systems work.
Experience with networking concepts, especially as they relate to VOIP (firewalls, NAT, QoS, etc.).
Experience with monitoring/observability stacks (Prometheus, Grafana, Zabbix, etc.).
Business level proficiency in English or above (equivalent to B2 or above in CEFR)
Nice to have
Familiarity with automation tools (Ansible, Terraform, etc.).
Exposure to telephony integrations (e.g., CRMs, Zendesk, analytics tools).
Experience with designing telephony platform architectures.
Exposure to observability stacks (e.g., Prometheus, Grafana, ELK) and proactive monitoring strategies.
Experience with system automation, scripting (e.g., Bash, Python), or configuration management tools.
What you will get in return:
Competitive Salary: We believe great work deserves great pay! Your skills and talents will be rewarded with a salary that makes you feel valued and motivated.
Work-Life Harmony: Join a company that genuinely cares about you—because your life outside of work matters just as much as your time on the clock.
Annual Performance Bonus: Your hard work doesn’t go unnoticed! Celebrate your achievements with a well-deserved annual bonus tied to your performance.
Generous Time Off: Need a breather? Our annual leave policy lets you recharge and enjoy life outside of work without a worry.
Employee Referral Program: Love working here? Share the love! Bring your talented friends on board and get rewarded for growing our awesome team.
Comprehensive Health & Pension Benefits: From medical insurance to pension plans, we’ve got your back. Plus, location-specific benefits and perks!
Workation Wonderland: Live your digital nomad dreams with 30 extra days to work remotely from anywhere in the world (some restrictions apply). Adventure awaits!
Volunteer Days: Make a difference! Take two additional paid days each year to support causes you care about and give back to the community.
Be a key player at the forefront of the digital assets movement, propelling your career to new heights! Join a dynamic and rapidly expanding company that values and rewards talent, initiative, and creativity. Work alongside one of the most brilliant teams in the industry.
Required profile
Experience
Industry :
Fintech: Finance + Technology
Spoken language(s):
English
Check out the description to know which languages are mandatory.