Lead Java Developer (with C background)

IDT Corporation; Warszawa; Híbrido; PLN 200.000 - 270.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Remote/hybrid work option

Stable long-term growth

Competitive salary with annual reviews

Good hardware

Challenging, team‑oriented work

Continuous learning and career growth

Support for training/seminars/confs

Referral program

Company-supported English classes

Perks for Minsk and Chisinau offices

Descripción de la vacante

IDT Corporation is seeking a Lead Java Developer with C background to design, implement, and scale a cloud PBX solution. You will drive architecture decisions, lead cross-functional teams, and own code quality and documentation in a high-availability environment.

Ideal candidates have 7+ years of production Java experience, hands-on C, CI/CD proficiency, and strong English skills (B2+). Expect collaboration across backend, infra/DevOps, QA, and product teams in a hybrid remote/on-site setting.

Formación

• 7+ years of production experience with large-scale deployments.
• Strong hands-on experience with Java.
• Hands-on experience with C.
• Experience with CI/CD, clouds, Linux & networking.
• Experience with CI/CD tools such as GitHub Actions, Jenkins, ArgoCD, and Maven.
• Proficiency with relational databases, particularly MySQL, including schema design, migrations, and query optimization.
• Good level of English (B2+).
• Ready to act as the technical lead.
• Can work cross-team with backend developers, infra/DevOps, QA, and product owners.
• Owns best practices, code quality, and documentation.

Responsabilidades

• Collaborate with business stakeholders and actively participate in product planning and sprint backlog meetings
• Take responsibility for the full software development lifecycle, from understanding business requirements through coding, deployment, and maintenance
• Develop and maintain technical design, architecture, and troubleshooting documentation
• Demonstrate a technology-agnostic mindset and continuously explore new technologies and approaches
• Analyze and interpret stack traces, crashes, memory issues, and performance bottlenecks
• Implement patches, backports, or enhancements directly in Asterisk source code
• Develop custom modules (C), when needed
• Work with Linux systems (systemd, networking, tuning, kernel parameters)
• Work with cloud environments (GCP preferred)
• Participate in architecture decisions
• Design and implement Asterisk dialplans

Conocimientos

Java

C

Leadership

Problem-solving

English (B2+)

Cross-team collaboration

Cloud (GCP)

Herramientas

GitHub Actions

Jenkins

ArgoCD

Maven

MySQL

Descripción del empleo

We’re looking for a Lead Java Developer with C background to help us build and scale a cloud PBX solution.

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 , with respect to high availability and scalability.

Responsibilities

• Collaborate with business stakeholders and actively participate in product planning and sprint backlog meetings
• Take responsibility for the full software development lifecycle, from understanding business requirements through coding, deployment, and maintenance
• Develop and maintain technical design, architecture, and troubleshooting documentation
• Demonstrate a technology-agnostic mindset and continuously explore new technologies and approaches
• Analyze and interpret stack traces, crashes, memory issues, and performance bottlenecks
• Implement patches, backports, or enhancements directly in Asterisk source code
• Develop custom modules (C), when needed
• Work with Linux systems (systemd, networking, tuning, kernel parameters)
• Work with cloud environments (GCP preferred)
• Participate in architecture decisions
• Design and implement Asterisk dialplans

Requirements

• Have at least 7+ years of production experience with large-scale deployments
• Strong hands-on experience with Java
• Hands-on experience with C
• Have experience with CI/CD, clouds, Linux & networking
• Experience with CI/CD tools such as GitHub Actions, Jenkins, ArgoCD, and Maven
• Proficiency with relational databases, particularly MySQL, including schema design, migrations, and query optimization
• Have a good level of English (B2 or higher)
• You are ready to act as the technical lead
• Can work cross-team with backend developers, infra/DevOps, QA, and product owners
• Own 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 perspective
• Competitive salary with annual performance review
• Really good hardware
• An exciting and challenging job with talented people around
• Continuous learning and career growth opportunities
• Compensation for professional training, seminars, and conferences
• Referral program - get rewarded for helping us grow the team with talented people
• Company-supported English classes to enhance your professional growth
• More 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.