Full Stack Development Internship Jobs in Toronto, ON

Putting people first, every day

BDO is a firm built on a foundation of positive relationships with our people and our clients. Each day, our professionals provide exceptional service, helping clients with advice and insight they can trust. In turn, we offer an award-winning environment that fosters apeople-first culturewith a high priority on your personal and professional growth.

Your Opportunity

We are looking for an exceptionally skilled, hands-on, and innovation-minded Full Stack Developer, to build complex web applications, AI agents and APIs in our new Assurance Innovation Lab (ASR Labs).

The Assurance Innovation R&D Lab (ASR Labs) serves as the experimentation, innovation, and solution development engine supporting our Assurance practice. Working alongside other functions nationally - including our Innovation Operations, AI Studio - Central Lab, Central Data Team, and Innovation & Change (I&C) - you will help ideate, design, prototype, develop, and deliver, scalable solutions that modernize how work gets done across our Assurance practice.

In this net new role you will work with a team dedicated to building modern applications, intelligent workflow solutions, integrations, and AI-enabled platforms that support business transformation and operational modernization initiatives across our practice. You will be reporting to our Head of ASR Transformation, and have a dotted line to our technically astute managers in our AI Studio - Central Lab.

This role goes beyond traditional application development. We are looking for a persistent and creative problem-solver who can think strategically about workflow modernization, scalability, integration, and user experience while delivering high-quality technical solutions.

The ideal candidate will have 3-7 years of experience developing innovative and highly scalable platforms and solutions. Hands-on experience spanning both front-end interfaces and back-end services and databases - full stack proficiency - is a prerequisite in this role. Cross-functional work experience is also critical.

Key Responsibilities:

Application Development & Engineering

• Design, develop, and maintain modern full stack applications, APIs, and intelligent workflow solutions

• Build scalable, secure, and high-performing platforms leveraging modern cloud-native architectures

• Develop intuitive user interfaces and business-facing applications that improve operational efficiency and user experience

• Support integration between data platforms, AI services, workflow tools, and enterprise systems

• Build reusable services and frameworks that support scalable transformation initiatives across Assurance

AI & Intelligent Workflow Enablement

• Collaborate with Data Scientists and AI teams to integrate AI, automation, and intelligent capabilities into applications and workflows

• Support development of AI-enabled tools, copilots, workflow automation solutions, and intelligent operational platforms

• Help operationalize prototypes and experimentation efforts into production-ready solutions

• Support modernization of workflows and operational processes through technology-enabled solutions

Cross-Functional Collaboration & Business Partnership

• Partner closely with Transformation Relationship Managers (TRMs), Assurance practitioners, Innovation & Change (I&C), Data & Analytics, and leadership teams

• Participate in multidisciplinary teams focused on solving business problems through technology, AI, automation, and workflow redesign

• Support rapid prototyping, experimentation, and scaling of innovative solutions within the Assurance R&D Lab

• Participate in discovery sessions, design thinking workshops, ideation sessions, and solution design activities

• Help bridge business needs, operational realities, and technical execution to accelerate transformation outcomes

• Translate business requirements into scalable technical solutions

DevOps, Scalability & Engineering Excellence

• Build and maintain CI/CD pipelines and modern development practices

• Support cloud deployment, infrastructure automation, monitoring, and operational reliability

• Ensure solutions follow best practices for security, scalability, maintainability, and performance

• Contribute to engineering standards, reusable frameworks, and technical governance

• Support agile delivery and iterative development approaches within transformation initiatives

Requirements:

• Bachelor's or master's degree in computer science, Software Engineering or a related field.

• Full stack proficiency earned through experience, not entitlement.

• Proficiency in front-end frameworks like React, Next, Angular, or Vue.js. Able to build dynamic web interfaces and user experiences.

• Expertise in back-end languages like Node.js, Python, Java, Go, C#, and associated frameworks. Able to develop robust and scalable APIs and microservices.

• In-depth experience with SQL and NoSQL databases like MySQL, MongoDB, or PostgreSQL.

• Track record of using tools like Docker, Kubernetes, Azure, or GCP to build and deploy cloud-based solutions.

• Experience with fully automated testing, continuous integration, and deployment pipelines.

• Passion for well-designed systems, learning new technologies and programming languages.

• Excellent communication, critical thinking and troubleshooting skills. Ability to work independently and collaboratively.

• Strong analytical and problem-solving skills to troubleshoot and debug software issues.

• Great attention to detail to ensure high-quality code and user experience.

The expected range of compensation for this role is $100,000 to $150,000 annually

Ideal Candidate Will Have

• Passion for building modern, scalable, business-facing applications

• Interest in AI-enabled workflow transformation and intelligent systems

• Strong curiosity and continuous learning mindset

• Ability to balance speed, experimentation, and engineering discipline

• Experience operating in agile, fast-paced transformation environments

• Strong collaboration and business partnership skills

• Interest in helping modernize how professional services work gets delivered

Why Join the Assurance Innovation Lab?

This is an opportunity to help build the future of Assurance through modern platforms, intelligent workflows, and scalable AI-enabled solutions. You will join a high-performing team to work on high-impact transformation initiatives that directly influence how the business operates and delivers value.

The role offers exposure to:

• Enterprise transformation and innovation programs

• AI-enabled applications and intelligent workflow solutions

• Modern cloud and engineering ecosystems

• Cross-functional collaboration with Assurance, AI-Studio, Data & Analytics, Innovation & Change, and leadership teams

• Rapid experimentation and enterprise-scale delivery initiatives

• Most importantly, you will help create practical solutions that improve how work gets done across our Assurance practice.

Why BDO?
Our people-first approach to talent has earned us a spot among Canada's Top 100 Employers for 2026. This recognition is a milestone we're thrilled to add to our collection of awards for both experienced and student talent experiences.

At BDO, our people experience is guided by three core pillars-Do work with genuine care, Do what matters with purpose, and Do what's next - shaping how we support our people, serve our clients, and grow together.

Our firm is committed to providing an environment where you can be successful in the following ways:

• We enable you to engage with how we change and evolve, being a key contributor to the success and growth of BDO in Canada.
• We help you become a better professional within our services, industries, and markets with extensive opportunities for learning and development.
• We support your achievement of personal goals outside of the office and making an impact on your community.
• We foster a collaborative, inclusive environment where your ideas are valued, and you can do your best work with genuine care and purpose
• We encourage innovation and forward thinking, empowering you to embrace what's next and help shape the future of our firm

Giving back adds up:Where company meets community.BDO is actively involved in our communities by supporting local charity initiatives. We support staff with local and national events where you will be given the opportunity to contribute to your community.

Total rewards that matter: We pay for performance with competitive total cash compensation that recognizes and rewards your contribution. We provide comprehensive benefits from day one, and a flexible personal time off policy. We're committed to supporting your overall wellbeing and provide reimbursement for wellness initiatives that fit your lifestyle.

Everyone counts: We are committed to creating a workplace where employees can participate fully, contribute meaningfully and succeed without barriers. We are dedicated to fostering a workplace defined by respect, fairness, and a true sense of belonging for everyone. We recognize and celebrate the unique experiences, identities, and perspectives that each of us bring - and that these experiences strengthen how we work together. Our commitment extends to ensuring that our application process is both inclusive and accessible. If you require accommodation to complete the application process, please contact us.

Flexibility: All BDO personnel are expected to spend some of their time working in the office, at the client site, and virtually unless accommodations or alternative work arrangements are in place.

Our model is a blended approach designed to support the flexible needs of our people, the firm and our clients. It's about creating work experiences that meet everyone's needs and providing flexibility to adjust when, where and how we work to meet the expectations of our role.

Code of Conduct: Our Code of Conduct sets clear standards for how we conduct business. It reflects our shared values and commitments and includes guiding principles to help us make ethical decisions and maintain trust with each other, our clients, and the public.

BDO may use artificial intelligence enabled tools to support certain aspects of the recruitment process. While these tools assist our teams, our use of AI does not replace human decision making, and all employment-related outcomes are made by BDO personnel.

More information on BDO Canada's Privacy Policy can be found here:

Privacy Policy | BDO Canada

Ready to make your mark at BDO? Click "Apply now" to send your up-to-date resume to one of our Talent Acquisition Specialists.

To explore other opportunities at BDO, check out ourcareers page.