Internship Full Stack Developer Jobs in Bolton, 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 seeking an exceptionally skilled Full Stack Developer to join the Tax R&D Lab within the Tax Transformation Office and help build the next generation of intelligent platforms, workflow solutions, and AI-enabled applications across the Tax practice.

The Tax R&D Lab serves as the experimentation, innovation, and solution development engine supporting the broader Tax Transformation roadmap and Total Tax Ecosystem vision. Working alongside other functions within the Tax Transformation Office - including Transformation Relationship Management (TRM), Data & Analytics, and Innovation & Change (I&C) - this role will help design, prototype, develop, and operationalize scalable solutions that modernize how work gets done across Tax.

This role is net new and will focus on building modern applications, intelligent workflow solutions, integrations, and AI-enabled platforms that support business transformation and operational modernization initiatives across the practice.

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

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 Tax

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), Tax 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 Tax 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

Qualifications & Experience

• Bachelor's or Master's degree in Computer Science, Software Engineering, or related field

• 3-5+ years of experience developing scalable full stack applications and platforms

• Strong experience with front-end frameworks such as React, Next.js, Angular, or Vue.js

• Strong back-end development experience using Node.js, Python, Java, Go, or C#

• Experience building APIs, microservices, and cloud-native applications

• Experience with SQL and NoSQL databases such as PostgreSQL, MongoDB, or MySQL

• Experience with Azure, AWS, or GCP cloud platforms

• Familiarity with Docker, Kubernetes, CI/CD pipelines, and DevOps practices

• Experience integrating AI or machine learning services into applications considered an asset

• Strong problem-solving and stakeholder communication skills

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 Tax Transformation Office?

This is an opportunity to help build the future of Tax through modern platforms, intelligent workflows, and scalable AI-enabled solutions.

You will 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 Tax, 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 the practice.
  The expected range of compensation for this role is: $77,000 to $117,000

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.

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.

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 flexible benefits from day one, and a market leading personal time off policy. We are committed to supporting your overall wellness beyond working hours and provide reimbursement for wellness initiatives that fit your lifestyle.

Everyone counts: We believe every employee should have the opportunity to participate and succeed. Through leadership by our Diversity, Equity and Inclusion Leader, we are committed to a workplace culture of respect, inclusion, and diversity. We recognize and celebrate the valuable differences among each of us, including race, religious beliefs, physical or mental disabilities, age, place of origin, marital status, family status, gender or gender identity and sexual orientation. 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.