Senior Full Stack Developer (.NETCore and React)

Cognibox; Canada; Remote; CAD 90,000 - 120,000; Full time

Job summary

A leading tech company in Canada seeks a Senior Full Stack Developer to build innovative solutions using .NET Core and React. This remote position requires expertise in software development and a collaborative attitude in an Agile environment. Ideal candidates will have strong communication skills and experience mentoring others, along with a passion for technology and problem-solving. Additional perks include wellness support and a commitment to a diverse workplace.

Benefits

Integrated mental health & wellbeing support

Vacation starting at 3 weeks

Comprehensive medical and dental coverage

Qualifications

• 5+ years in .NET Core/Framework and React development.
• Experience in Agile/Scrum teams.
• Understanding of microservices architecture.

Responsibilities

• Design and build scalable web applications.
• Engage with stakeholders to gather requirements.
• Mentor junior developers.

Skills

Strong technical expertise in .NET Core / .NET Framework

Proven experience with React and TypeScript/JavaScript

Excellent communication skills

Strong debugging and analytical skills

Education

Degree in Computer Science, Engineering, or related field

Tools

Azure DevOps

Git

Job description

Senior Full Stack Developer (.NETCore and React)

Department: Technology & Product

Employment Type: Permanent

Location: Remote, Canada

Reporting To: Engineering Manager

Description

Building innovative solutions; enabling safer workplaces for everyone. We’ll create a safer working world, building software to support a global network of responsible buyers, suppliers and partners. Today, at Alcumus we take the pain out of compliance for over 50,000 organisations globally, helping them protect their people, their operations, and the planet. Keeping our network of hiring clients, suppliers, and contractors compliant with the standards that matter most, from health and safety and sustainability to ethical behaviour by building best in class solutions. The tech we build today, will create a better tomorrow.

As a .NET React Software Developer, you will play a pivotal role in building high-quality, scalable software applications that shape the future of our technology solutions. Collaborating within a cross-functional Agile team, you will drive continuous improvement in development practices, influence the product roadmap, and deliver impactful features that enhance user experience and business value.

Your expertise in .NET Core/Framework and React, combined with your ability to communicate complex ideas to non-technical stakeholders, will contribute to the delivery of cutting-edge products and the ongoing growth of our dynamic tech team.

This is an exciting opportunity to work in a collaborative, modern environment - where you can learn, grow, and have a direct influence on the success of the business.

What that means day-to-day:

• Collaborate closely with the development team to design, build, and maintain scalable web applications using .NET (Core/Framework) for the backend and React for the frontend.
• Take a proactive role in improving tools, services, and platforms, continuously enhancing team workflows and Agile practices for more efficient and higher-quality delivery.
• Participate in the full software development lifecycle including requirements gathering, user story creation, technical design, coding, testing, deployment, and support.
• Engage with internal and cross-functional stakeholders to gather and validate requirements, turning them into high-quality software solutions.
• Write clean, maintainable, and testable code following coding standards and best practices. Participate in code reviews and design discussions.
• Work with QA teams to ensure high levels of software quality, and help troubleshoot and resolve production issues.
• Provide third-line support for existing applications and develop new features that extend product functionality.
• Contribute to architectural decisions and support the transition to modern technologies and platforms, as needed.
• Mentor junior developers and contribute to technical knowledge sharing within the team.
• Communicate effectively with both technical and non-technical stakeholders to ensure clarity and alignment throughout the development lifecycle.

What you’ll need to be successful:

Required Skills & Experience:

• Strong technical expertise in .NET Core / .NET Framework, C#, ASP.NET Web API, and SQL Server.
• Proven experience developing modern, responsive, and performant web applications using React and TypeScript/JavaScript.
• Solid understanding of RESTful APIs, Entity Framework, and full-stack development principles.
• Excellent communication skills with the ability to explain complex technical concepts to non-technical stakeholders.
• Experience working in Agile/Scrum teams and using tools like Azure DevOps, Jira, or similar.
• Highly organised, self-motivated, and capable of prioritising and managing workloads under pressure.
• Experience with version control systems such as Git.
• Strong debugging, problem-solving, and analytical skills.

• Familiarity with cloud platforms (preferably Azure) including App Services, Azure Functions, and related DevOps practices (CI/CD pipelines, etc.).
• Knowledge of security best practices, including OWASP and compliance frameworks such as ISO 27001/27032.
• Experience with Windows Services, asynchronous programming (e.g., messaging queues, caching, background jobs).
• Understanding of microservices architecture, design patterns, and scalable system design.
• Exposure to unit testing frameworks and automated testing practices.
• A degree in Computer Science, Engineering, or a related field is beneficial.
• Experience mentoring junior developers or participating in technical leadership activities.

What you’ll get in return:

Personal Health & Wellbeing

Integrated mental health & wellbeing support

Vacation – starting at 3 weeks

Wellness Days & Annual Giving Day – an extra to give back to yourself or your community

Comprehensive medical and dental coverage

End of the year, company-wide shut down for you to relax and recharge

Future Planning

LinkedIn Learning License for upskilling & development

Interested but don’t feel you meet all the requirements?

Our recruitment team assesses and reviews all applications against the role and business needs. We believe in people having transferable and soft skills and want you to know that we consider applications that might not meet all the criteria, but have the aptitude and capability, nonetheless. Our priority is to ensure we set people up for success. We will make a final call based on our determining whether we can offer the necessary support to upskill or provide the developmental support needed for you to get the best out of this opportunity with us!

Bring Your Whole Self to Work.

Alcumus is proudly an equal-opportunity employer. We are committed to ensuring that no candidate is discriminated against because of gender identity and expression, race, disability, ethnicity, sexual orientation, age, colour, region, creed, national origin, or sex. We are dedicated to growing a diverse team while continuing to create an inclusive environment where everyone feels safe and empowered to be themselves.

What you can expect if you apply:

• A response to your application within 15 working days
• An interview process consisting of:
• An initial discovery call with the recruiter
• A first stage interview via Microsoft Teams
• Additional interview with the stakeholders you’ll be working with closely in the role

We’re keen to ensure our hiring process allows you to be at your best, so if you need us to make any adjustments, please just let us know.