Sr. Java Developer – VOIP/SIP/911 Systems

HireOn; Montreal; Hybrid; CAD 100,000 - 120,000; Full time

Job summary

An innovative firm is seeking a Senior Software Developer specializing in VOIP and 911 systems. This role is crucial for developing life-critical applications that ensure effective emergency call routing and GIS-based services. Candidates should possess strong Java skills and a deep understanding of VOIP/SIP protocols, along with experience in Agile methodologies. You'll work in a hybrid environment, collaborating closely with cross-functional teams to deliver high-quality software solutions. If you are passionate about making a difference in emergency communications, this is the perfect opportunity for you to shine.

Qualifications

• 8-15 years of software development experience, especially in VOIP/SIP.
• Strong Java skills required; experience in C#, Python, or JavaScript is a plus.

Responsibilities

• Design and develop software for 911 systems and VOIP integration.
• Collaborate with teams and maintain documentation.

Skills

Java

VOIP

SIP

Agile

Linux

SQL

Python

JavaScript

C#

Terraform

Education

Bachelor's degree in Computer Science

Equivalent experience

Tools

Springboot

Oracle DB

AWS

Azure

NoSQL

React

.NET

Angular

Job description

2 days ago Be among the first 25 applicants

This range is provided by HireOn. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

CA$100,000.00/yr - CA$120,000.00/yr

Title: Senior Software Developer – VOIP/911 Systems

Location: Montreal, Quebec Office (Hybrid)

Type: Full-Time | Salary: $100,000–$120,000 CAD

Experience Required: 8–15 years

About The Role

We’re seeking a Senior Software Developer (Java) with deep expertise in VOIP/SIP protocols and prior experience developing 911 call handling solutions. You’ll be working on life-critical applications that enable emergency call routing and GIS-based location services.

Key Responsibilities

• Software Development: Design, develop, and maintain high-quality software for 911 systems.
• VOIP & SIP Integration: Implement solutions involving VOIP and SIP call flows.
• Collaboration: Work closely with product managers, designers, and QA teams.
• Code Quality: Participate in code reviews and follow best practices.
• Testing: Write unit and integration tests; collaborate with QA for full coverage.
• Troubleshooting: Diagnose and resolve bugs or performance issues.
• Documentation: Maintain clear and up-to-date technical documentation.
• Agile Participation: Attend daily stand-ups, sprint planning, and retrospectives.
• Version Control: Use Git for managing and tracking code changes.
  
  

Must-Have Skills

• Strong experience with VOIP or SIP protocol development and call flow knowledge.
• Prior work on 911 systems or emergency communication software.
• Proficiency in Java (required); additional experience in C#, Python, JavaScript, or SQL is a plus.
• Experience working in Linux environments.
• Solid grasp of SDLC and Agile/Scrum methodologies.
• Good communication skills and ability to work in cross-functional teams.
  
  

Preferred Skills

• Experience with Springboot, .NET, React, or Angular.
• Familiarity with Oracle DB, SQL, or NoSQL databases.
• Exposure to cloud platforms like Azure or AWS.
• Knowledge of infrastructure-as-code tools like Terraform.
• Background in telecommunications software is a strong advantage.
  
  

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or equivalent experience.
• Minimum 8 years of professional software development experience (5+ is the minimum acceptable; 8–15 preferred).
  
  

Skills: azure,sql,linux,javascript,oracle db,sdlc,nosql,springboot,python,agile,java,aws,c#,terraform,sip,react,voip,.net,angular

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  IT Services and IT Consulting

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