Senior Java VOIP​/SIP Engineer - Systems Hybrid-Montreal

Senior Java Developer VOIP/SIP Solutions
Location: Hybrid Montreal, QC, Canada
Industry: Emergency Communications & Telecommunications Software
Compensation: CAD $100,000 $ 120,000
Final date to receive applications: June 20, 2025

We are recruiting on behalf of a technology leader in emergency response and telecommunications, developing next-generation 911 call-handling and VOIP solutions. Their software is used in mission-critical environments where accuracy, speed, and reliability save lives. Based in Montreal, this organization is seeking an experienced Senior Software Developer (Java) to join their expanding engineering team.

Must-Have Skills & Experience:

8+ years of professional software development experience (5+ is the minimum acceptable)

Strong experience in Java, with solid knowledge of the full SDLC

Deep understanding of VOIP and SIP protocol development, including call flow logic

Previous experience working on 911 systems or emergency call-routing platforms

Comfortable working in Linux environments

Familiarity with Agile/Scrum methodologies and version control systems (e.g., Git)

Effective communication skills and experience in cross-functional teams

Preferred Skills:

Experience with Spring Boot, .NET, React, or Angular

Knowledge of databases such as Oracle, SQL, or No

SQL

Exposure to cloud platforms (Azure, AWS)

Familiarity with Infrastructure-as-Code tools like Terraform

Background in telecommunications or public safety systems

Qualifications:

Bachelors degree in Computer Science, Software Engineering, or equivalent professional experience

Design, develop, and maintain software applications for emergency response systems

Implement and enhance VOIP/SIP communication protocols and call routing logic

Collaborate with product managers, designers, and QA to align on technical and functional goals

Write clean, maintainable code with proper documentation

Develop unit and integration tests and support QA with troubleshooting and defect resolution

Use Git and modern development tools to manage codebase effectively