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

Position: Senior Java VOIP/SIP Engineer - 911 Systems Hybrid-Montreal
Location: Montreal

About the job Sr. Java Developer VOIP/SIP Solutions   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