Full-Stack Developer, backend

Jenoptik Group; Mississauga; On-site; CAD 90,000 - 120,000; Full time

Job summary

Jenoptik Light & Safety is seeking a fullstack developer to build and maintain the C# backend and React frontend powering our web application. You will work with product, design, and engineering to turn requirements into working software, end to end, on a team that values clean code and ownership.

Candidates should have a Bachelor's degree and proven fullstack experience with C#, .NET Core, React, and RESTful APIs.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experience.
• Proven fullstack experience with C#, .NET Core, and React.
• Strong backend architecture knowledge: data persistence, caching, and async processing.
• Experience with RESTful APIs and API design principles.
• Strong problem-solving, communication, and collaboration skills.
• Experience on a globally distributed engineering team.
• Excellent communication; able to explain technical concepts clearly.
• Ability to absorb details quickly and meet tight deadlines.
• Willingness to travel to Jupiter, FL; Mississauga, ON; Monheim am Rhein; Farnborough.
• Radar/traffic system experience is a plus.
• Comfortable working in an Agile/Scrum environment.

Responsibilities

• Design, build, and maintain C# backend services and React frontend components powering our web application.
• Collaborate with product, design, and engineering to translate requirements into technical solutions.
• Write clean, well-documented code following industry standards.
• Review code and provide constructive feedback to peers.
• Build and optimize secure RESTful APIs for ease of use.
• Partner with DevOps to deploy, monitor, and troubleshoot backend and frontend components.
• Improve performance, reliability, and security; stay current with trends.

Skills

Fullstack development

C#/.NET Core

React/TypeScript

API design

Agile/Scrum

Distributed teamwork

Education

Bachelor's degree in Computer Science or Engineering

Tools

C#

.NET Core

React

TypeScript

HTML

CSS

REST APIs

Job description

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We create photonic solutions to shape the world of tomorrow, together with people who embrace brilliant ideas with openness and curiosity.With teams in over 80 countries, we offer you the opportunity to reach your full potential.

Job ID: 5039

Location: Mississauga, ON, CA

Date: Sep 28, 2026

SUMMARY:

Jenoptik Light & Safety builds the civil security and smart city systems used by agencies across North America and Europe. We're looking for a fullstack developer to build and maintain the C# backend and React frontend that power our web application. You'll work closely with product, design, and engineering to turn requirements into working software, end to end, on a team that values clean code and real ownership.

RESPONSIBILITIES INCLUDE (BUT ARE NOT LIMITED TO):

• Design, build, and maintain C# backend services and React frontend components that power our web application.
• Work with product, design, and engineering to understand requirements and turn them into effective technical solutions.
• Write clean, maintainable, well-documented code that follows industry best practices and our internal coding standards.
• Review code and give your peers constructive feedback.
• Build and optimize RESTful APIs that are secure, efficient, and easy to use.
• Partner with DevOps to deploy and monitor backend and frontend components, and troubleshoot issues as they come up.
• Improve the performance, reliability, and security of our systems, and stay current with trends and technologies in the field.

REQUIREMENTS:

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Proven experience as a fullstack developer, ideally with C#, .NET Core, and React.
• Strong understanding of backend architecture, including data persistence, caching, and asynchronous processing.
• Proficient in C#, .NET Core, and related tools and frameworks, as well as React, TypeScript, HTML, and CSS.
• Experience with RESTful APIs and knowledge of API design principles and best practices.
• Strong problem-solving, communication, and collaboration skills.
• Experience working on a globally distributed engineering team.
• Strong communication skills. You can explain technical concepts clearly to developers, other technical teams, and management.
• Comfortable absorbing technical detail quickly and making sound decisions under tight deadlines, even with incomplete information.
• Willingness to travel to Jupiter, FL; Mississauga, ON; Monheim am Rhein, Germany; and Farnborough, England.
• Experience with radar, photo enforcement, or traffic systems is a plus.
• Comfort working in an Agile/Scrum environment.

DESIRED SKILLS:

• Familiarity with cloud platforms such as AWS or GCP, preferably Microsoft Azure, along with experience in containerization and orchestration tools like Docker.

PHYSICAL REQUIREMENTS:

This role occasionally requires standing, walking, sitting, and using your hands to handle tools, objects, or a keyboard. You may need to reach, climb stairs, balance, stoop, kneel, crouch, or work at heights and on ladders. Occasional lifting up to 50 pounds is required. Reasonable accommodations are available for individuals with disabilities.

About Jenoptik

With its Strategic Business Unit (SBU) Smart Mobility Solutions, Jenoptik provides photonics-based, innovative and sustainable solutions, including technology and services for road safety and security. As an end-to-end solution provider, we support our customers with the provision of roadside equipment and software, including integration, installation, maintenance and financing models through to full-service operation of our solutions. Our strong global presence and installation base is supported by a longstanding partner network with tens of thousands systems deployed worldwide. Leveraging 90 years of experience and 40 years in ANPR, Jenoptik is a world-leading enabler for road safety and civil security, with intelligent solutions and services constantly evolving to help make roads, journeys, communities and our environment safer around the globe.