Engineer (VoIP)
This is an exciting and challenging job in a fast-growing business group, offering the opportunity to be part of a multicultural team of top professionals. You will work with passionate experts and leaders in a friendly, success-driven culture. The role involves configuring, maintaining, and troubleshooting Asterisk systems, supporting SIP trunks, endpoints, and call routing logic, and analyzing call issues such as one-way audio, no audio, call drops, and registration problems. You will also work with SIP/RTP, codecs, NAT, ICE, STUN/TURN, monitor system health and call quality, analyze CDR/CEL/SIP logs/RTP streams, and support integration between Asterisk and CRM systems. Collaboration with telecom providers and vendors, participation in incident response and root-cause analysis, and writing technical documentation are also key aspects of this role. Integration of new services and technologies with Asterisk is expected.
- Configure, maintain, and troubleshoot Asterisk systems
- Support SIP trunks, endpoints, and call routing logic
- Analyze call issues: one-way audio, no audio, call drops, registration problems
- Work with SIP/RTP, codecs, NAT, ICE, STUN/TURN
- Monitor system health and call quality (ASR, ACD, PDD, MOS)
- Analyze CDR / CEL / SIP logs / RTP streams
- Support and expand integration between Asterisk and CRM systems
- Collaborate with telecom providers and vendors
- Participate in incident response and root-cause analysis
- Write and maintain technical documentation
- Integration of new services and technologies with Asterisk
- 2–4 years of hands-on experience with VoIP systems
- Strong knowledge of PJSIP, RTP, SDP, WS/WSS
- Solid hands-on experience with Asterisk: Dialplan logic, PJSIP, WebRTC signaling, ARI applications, and AMI integrations
- Understanding of NAT, firewalls, UDP/TCP, QoS
- Experience with Linux (Debian/CentOS/RHEL)
- Ability to read and analyze Asterisk logs and SIP traces
- Basic scripting skills (Bash; Python is a plus)
- English at technical communication level
- Knowledge of Databases (MySQL/PostgreSQL) for CDR analysis
- Experience with cloud platforms (AWS, GCP, Azure)
- Experience with monitoring systems (Grafana, Prometheus, Homer)
- Experience with Kamailio
- Paid vacations, sick leave, personal events days, days off
- Referral program
- Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences
- Rewards program for mentoring and coaching colleagues
- Free internal English courses
- Yoga classes
- In-house Travel Service
- Multiple internal activities: online platform for employees with quests, gamification, presents and news, RedCore clubs for movie / book / pets lovers, special office days dedicated to holidays
- Company events, team buildings
PIN-UP Global is an international holding company that develops technologies, B2B solutions and products for the iGaming industry. Headquartered in Warsaw, the group brings together businesses spanning product development, technology and marketing services for online gaming. It supports a portfolio of companies and brands operating across multiple markets. PIN-UP Global focuses on building advanced technology and products for the gambling sector.