1

Internship Defense Contractor Software Engineer Jobs in Ottawa, ON

Software Engineer

Ottawa, ON · On-site

CA$85K - CA$135K/yr

L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in ... Software Engineer Job Location: Ottawa, ON Job Code: 39213 Job Schedule: Day Shift Compensation ...

Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that ...

Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that ...

Previous internship, co-op, or applied project experience relevant to the role. * Coding with C or C++ * High-level programming and scripting languages such as Python or bash * Knowledge of software ...

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating ...

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating ...

... defense. Are you the person we are looking for? At QNX, we are building the next generation of ... If you're an early-career systems engineer who thrives on lowlevel systems work, has a strong ...

The Job SRC CAN Ltd is seeking an Intermediate Software Developer to contribute to the design ... Defense (DND) facilities, such as the Shirley's Bay and Tunney's Pasture areas within the National ...

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating ...

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating ...

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are seeking experienced Senior Software Engineers to support an AI training project by creating ...

next page

Showing results 1-20

Internship Defense Contractor Software Engineer information

What does an internship defense contractor software engineer do?

An Internship Defense Contractor Software Engineer assists in developing, testing, and maintaining software systems for defense-related projects under the guidance of experienced engineers. Interns may work on tasks such as coding, debugging, software integration, and documentation, often focusing on secure and reliable solutions for military or government applications. They typically collaborate with multidisciplinary teams to support the development of technologies like radar systems, communications software, or cybersecurity tools. This role provides valuable hands-on experience in a highly regulated and impactful industry.

What are the key skills and qualifications needed to thrive as an internship defense contractor software engineer?

To thrive as an Internship Defense Contractor Software Engineer, you should have a strong foundation in computer science principles, programming languages (such as C++ or Java), and be enrolled in or have completed relevant coursework. Familiarity with secure software development practices, integrated development environments (IDEs), and version control systems like Git is typically expected. Strong problem-solving abilities, attention to detail, teamwork, and effective communication are essential soft skills in this setting. These competencies are crucial for developing high-quality, secure software that meets stringent defense industry standards while collaborating effectively in multidisciplinary teams.

What types of projects might I work on as an internship defense contractor software engineer?

As an intern software engineer at a defense contractor, you can expect to work on a variety of projects ranging from developing and testing embedded systems to supporting simulation tools and software used in defense applications. Interns often collaborate with multidisciplinary teams, including engineers, analysts, and project managers, to contribute to real-world solutions such as cybersecurity, radar systems, or mission planning software. The work environment is typically fast-paced and emphasizes security protocols, so you'll also gain experience working within strict compliance and documentation standards. These experiences not only build technical skills but also provide insight into how large, complex projects are managed in the defense industry.

What cities near Ottawa, ON are hiring for Internship Defense Contractor Software Engineer jobs?

Cities near Ottawa, ON with the most Internship Defense Contractor Software Engineer job openings:

Infographic showing various Internship Defense Contractor Software Engineer job openings in Ottawa, ON as of August 2026, with employment types broken down into 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution.

CA$85K - CA$135K/yr

Full-time

Re-posted 14 days ago


Job description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Software Engineer
Job Location: Ottawa, ON
Job Code: 39213
Job Schedule: Day Shift
Compensation Range: Between $85,500 - $135,500 CDN annually

We are seeking a Software Engineer to contribute to the design and development of a next-generation communications management suite. The successful candidate will play a key role in designing robust software architectures, developing microservices-based applications, and delivering solutions that enable the monitoring, control, and management of complex communications networks. Working within a multidisciplinary engineering team, you will tackle challenging problems in distributed computing, networking, and real-time systems while supporting mission-critical operational requirements and simulation environments.


Essential Functions:

  • Design software solutions and contribute to software designs;
  • Understand and develop microservices solution that operates in a complex, multi-network environment;
  • Conduct independent research and provide new solutions to problems;
  • Interact with systems engineering on technical issues;
  • Debugging software problems for near real-time simulation; and
  • Conduct and prepare presentations and demonstrations.

Qualifications:

  • Bachelor's degree in Computer Science/Computer or Software Engineering (or equivalent experience), or Electrical or Systems Engineering with software experience;
  • Minimum 7 years software engineering experience which must include object-oriented design and programming, C#, ASP.NET and .Net Core;
  • Experience building web applications, using web technologies and protocols such as C#, ASP.NET, .Net Core, REST APIs, Http, and SignalR;
  • Experience with client-server and networking protocols, such as SNMP, Websockets, and TCP stack;
  • Experience with relational databases (MySQL or others); and
  • Excellent technical communication of ideas and design.

Preferred Additional Skills:

  • Experience with CQRS, Distributed Systems & Akka;
  • Experience designing and developing highly available, fault tolerant and distributed systems;
  • Experience with message broker systems such as RabbitMQ or similar;
  • Strong organizational, analytical, and problem-solving skills combined with a strong technical presence;
  • Work on problems of diverse scope, determining methods and procedures to be used on new assignments, and providing feedback and recommendations to other technical personnel;
  • Able to work independently and in a team-based environment;
  • Experience with web frameworks such as Vue.js or Angular is an asset;
  • Knowledge and /or experiencing in developing or integrating applications is an asset; and
  • Experience in military systems and standards is an asset.

Eligibility Criteria:

  • Must be eligible for registration with the Controlled Goods Program; and
  • Must be eligible to obtain and maintain a government of Canada Reliability status and Secret Level 2/NATO Secret security clearance.

L3Harris is proud to be an equal opportunity employer and is committed to treating all of its employees and job applicants with respect and dignity and to maintaining a workplace free from discrimination. Anyone applying for a position will be considered without regard to the following: race, national or ethnic origin, colour, religion, age, nationality, ancestry, ethnicity, gender, sex, sexual orientation, gender identity or expression, marital status, family status, genetic characteristics, disability, citizenship status, or conviction for an offence for which a pardon has been granted or in respect of which a record suspension has been ordered, or any other characteristic that is protected by applicable human rights legislation.

L3Harris maintains a drug-free workplace and conducts pre-employment drug and alcohol testing and background checks, in accordance with applicable law. Such results are only accessible and viewed by individuals at L3Harris who have direct responsibility in the hiring process. If you fail to report for a drug and alcohol test, refuse to undergo such test or test positive for the presence of drugs or alcohol, the hiring process may be concluded or your offer of employment may be rescinded, in L3Harris' sole discretion.

This job is for an existing vacancy

At L3Harris, we foster an inclusive and equitable workplace. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. For applicants with disabilities, we will provide you with accommodation so that you have what you need in order to be at your best.

L3Harris performs background checks prior to employment as all applicants must be eligible for registration with the Controlled Goods Program and obtain and maintain a positive security assessment. Some positions may require a government of Canada "Reliability" status and/or Level 2 (Secret) security clearance. In addition, L3Harris performs pre-employment substance abuse testing where required.

Employment Type: Full-Time