Lead Java Developer (with C background)

We’re looking for a Senior/Lead Java Developer with C background to help us build and scale a cloud PBX solution based on Asterisk. The team is building a cloud PBX solution based on Asterisk. We expect you to have strong problem-solving skills, be self-motivated, initiative, and responsible. Your daily duties will include implementing different SIP proxy features using Java/C and Asterisk with respect to high availability and scalability. Responsibilities: Collaborate with business stakeholders and actively participate in product planning and sprint backlog meetingsTake responsibility for the full software development lifecycle, from understanding business requirements through coding, deployment, and maintenanceDevelop and maintain technical design, architecture, and troubleshooting documentationDemonstrate a technology-agnostic mindset and continuously explore new technologies and approachesAnalyze and interpret stack traces, crashes, memory issues, and performance bottlenecksImplement patches, backports, or enhancements directly in Asterisk source codeDevelop custom modules (C), when neededWork with Linux systems (systemd, networking, tuning, kernel parameters)Work with cloud environments (GCP preferred)Participate in architecture decisionsDesign and implement Asterisk dialplans Requirements: Have at least 7+ years of production experience with large-scale deploymentsStrong hands-on experience with JavaHands-on experience with CHave experience with CI/CD, clouds, Linux & networkingExperience with CI/CD tools such as GitHub Actions, Jenkins, ArgoCD, and MavenProficiency with relational databases, particularly MySQL, including schema design, migrations, and query optimizationHave a good level of English (B2 or higher)You are ready to act as the technical leadCan work cross-team with backend developers, infra/DevOps, QA, and product ownersOwn best practices, code quality, and documentation We are pleased to offer: Remote work as b2b contractor or on-site/hybrid employment (Belarus-Moldova) work opportunity!Stable job with long-term growth perspectiveCompetitive salary with annual performance reviewReally good hardwareAn exciting and challenging job with talented people aroundContinuous learning and career growth opportunitiesCompensation for professional training, seminars, and conferencesReferral program - get rewarded for helping us grow the team with talented peopleCompany-supported English classes to enhance your professional growthMore perks for the Minsk and Chisinau office employees A few words about us: IDT Corporation is a global communications company founded in 1990 and headquartered in Newark, New Jersey. We are industry leaders in prepaid communication and payment services and one of the largest international voice carriers. We are listed on the NYSE, employ over 1800 people across 20 countries, and have over $1.5 billion in revenues. We are not ”another big IT corporation”— we encourage and support in-house entrepreneurs in developing their ideas into business actions. Net2Phone is a rapidly growing global provider of unified cloud communications solutions. It solves the problem of cost optimization for businesses in more than 50 countries, providing them with high-quality VoIP services. Net2Phone provides businesses with an integrated communications suite featuring powerful collaboration tools such as voice, messaging, chat, and unlimited domestic and international calling to 23+ countries. The product was named ‘VoIP Supplier of the Year’ by the Telecom Consulting Group in 2018. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.