Intermediate Java Comms Developer
Decisive Technologies
Marketing & Communications, Software Engineering
Canada · Ontario, Canada · Ottawa, ON, Canada · Kanata, Ottawa, ON, Canada
USD 82,500-105k / year
Posted on Mar 28, 2026
Position Overview
Calian Operational and Training Technologies Solutions (COTTS) is dedicated to the delivery of simulation related products and software development services to the military and defence sector. Beginning in 2006 with only 3 individuals it has grown to more than 40 people. COTTS track record domestically and internationally has earned its past and present growth rate in the exciting field of simulation. COTTS is best known for its flagship product called VCCI – Virtual Command and Control Interface, a trusted integration technology in the simulation to C5ISRT space. COTTS is the trusted connector between the digital and physical frontlines. We unify virtual, augmented and integration technologies to create the conditions for an unequaled experience and ultimately customer success.
Responsibilities
$82.5K – 105K
Vacancy
We have 1 available position.
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Calian Operational and Training Technologies Solutions (COTTS) is dedicated to the delivery of simulation related products and software development services to the military and defence sector. Beginning in 2006 with only 3 individuals it has grown to more than 40 people. COTTS track record domestically and internationally has earned its past and present growth rate in the exciting field of simulation. COTTS is best known for its flagship product called VCCI – Virtual Command and Control Interface, a trusted integration technology in the simulation to C5ISRT space. COTTS is the trusted connector between the digital and physical frontlines. We unify virtual, augmented and integration technologies to create the conditions for an unequaled experience and ultimately customer success.
Responsibilities
- Gather and document requirements
- Design, develop, and maintain Java applications for use with VOIP/ROIP and digital communication systems.
- Integrate and optimize audio codecs (e.g., Opus, AAC Audio).
- Work on SIP, RTP, and other VOIP/ROIP protocols for real-time communication.
- Collaborate with cross-functional teams to design secure and fault-tolerant communication solutions.
- Develop and implement features for interoperability with military communication systems.
- Ensure scalability, low-latency performance, and high availability of communication services.
- Participate in code reviews, architecture discussions, and technical planning.
- Participate in software testing and software deployment.
- Regular customer engagement for the purposes of requirements gathering, feature demonstrations, and product support.
- Bachelor’s degree in computer science or equivalent (e.g. computer engineering), or College diploma in computer technology or equivalent.
- 5+ years of experience in Java development in the software industry.
- Experience developing distributed client/server environments.
- Knowledge of VOIP/ROIP technologies (e.g., SIP, RTP, SRTP).
- Hands-on experience with audio codecs and real-time media processing.
- Familiarity with radio systems, digital signal processing (DSP), and tactical communication protocols.
- Understanding of network programming and low-level socket communication.
- Excellent problem-solving, debugging, and performance optimization skills.
- Experience developing communication software for military, defense, or emergency services.
- Familiarity with Open SDR (software-defined radio).
- Must hold or be eligible to obtain a Government of Canada Secret (Level II) security clearance.
$82.5K – 105K
Vacancy
We have 1 available position.
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