Full Stack Developer

Posting Start Date: 6/23/26

Job Type: PermanentWork Model: HybridReference code: 133751Primary Location: Toronto, ONAll Available Locations: Toronto, ON

Our Purpose

At Deloitte, our Purpose is to make an impact that matters. We exist to inspire and help our people, organizations, communities, and countries to thrive by building a better future. Our work underpins a prosperous society where people can find meaning and opportunity. It builds consumer and business confidence, empowers organizations to find imaginative ways of deploying capital, enables fair, trusted, and functioning social and economic institutions, and allows our friends, families, and communities to enjoy the quality of life that comes with a sustainable future. And as the largest 100% Canadian-owned and operated professional services firm in our country, we are proud to work alongside our clients to make a positive impact for all Canadians.

By living our Purpose, we will make an impact that matters.

Have many careers in one Firm. Enjoy flexible, proactive, and practical benefits that foster a culture of well-being and connectedness. Learn from deep subject matter experts through mentoring and on the job coaching

Summary

We are looking for a hands-on Consultant-level Full Stack Developer to support rapid proof-of-concept development and demo-ready features for the ElectrifiedGrid (EG) product. Reporting to the Product Owner, this role will contribute directly across the React/TypeScript frontend and Python FastAPI backend while quickly understanding the existing product, codebase, and delivery context.

This role is focused on building quick-turnaround prototypes, reusable UI components, API integrations, and demo flows by reusing existing patterns, shared components, services, and code wherever practical. The ideal candidate can move quickly without creating unnecessary duplication or long-term maintenance burden.

What will your typical day look like?

You will develop, test, and iterate on full stack PoC and demo features using React, TypeScript, Python, and FastAPI. You will work from Figma designs, product direction, and existing technical patterns to quickly produce functional demo experiences while aligning with the current EG product architecture and codebase.

You will collaborate with Product, UX/UI, engineering, QA, DevOps, and other developers to clarify requirements, understand available reusable assets, identify the fastest practical implementation path, and troubleshoot issues during development and demo preparation.

Key Responsibilities:

Develop quick-turnaround PoC and demo-ready features across the React/TypeScript frontend and Python FastAPI backend. Understand the existing EG product, architecture, codebase, and delivery patterns before building new functionality. Reuse existing shared components, design patterns, APIs, services, and utilities wherever practical to reduce duplication and speed up delivery. Create reusable, accessible, and maintainable frontend components using React, TypeScript, and shared component libraries such as MUI. Translate Figma designs and product direction into functional user interfaces suitable for stakeholder demos. Build and integrate backend APIs and lightweight services using Python FastAPI to support prototype and demo scenarios. Work pragmatically to balance speed, quality, reusability, and maintainability for PoC and demo use cases. Use AI-assisted coding tools such as GitHub Copilot, Cursor, or Codex CLI responsibly to accelerate prototyping, code exploration, refactoring, and test creation while maintaining code quality and security expectations. Participate in pull request reviews by giving and receiving constructive feedback to improve code quality. Support debugging, issue triage, and root-cause analysis for development, testing, and demo-related issues. Document key implementation details, assumptions, component usage, and API considerations to support knowledge sharing and future reuse. Work closely with Product, UX/UI, QA, DevOps, and engineering teams to prepare reliable demo experiences on short timelines.

About The Team

ElectrifiedGrid is a SaaS electric infrastructure planning tool built by Deloitte and utility partners around the world that combines a digital twin of a power grid with geospatially detailed technology adoption and load forecast modelling to assess the impacts of emerging electro-technology loads on electricity infrastructure.

ElectrifiedGrid has been successfully implemented by utilities globally and is actively helping utilities, governments, and regulators understand geospatial demand changes, forecast new electro-technologies, conduct integrated system planning, and enhance rate case filings and investments.

The team reports to Wonder, Deloitte Canada’s internal venture studio, as well as Deloitte’s Belgian member firm.

Enough About Us, Let’s Talk About You

You are someone who has these skills, experience & qualifications:

3+ years of experience in full stack software development, frontend application development, or backend API development. Strong hands-on experience with React and TypeScript. Strong hands-on experience with Python and experience building APIs or backend services using FastAPI. Experience building quick prototypes, PoCs, or demo-ready product features under short timelines. Experience working with shared component libraries, design systems, or UI frameworks such as MUI. Experience translating Figma designs into reusable frontend components and functional user interfaces. Ability to quickly understand an existing product and codebase, identify reusable assets, and avoid unnecessary duplication. Experience using AI-assisted coding tools such as GitHub Copilot, Cursor, or Codex CLI to improve development speed, understand existing code, and support rapid prototyping. Experience working with Git-based development workflows, pull requests, code reviews, and issue tracking tools. Good understanding of testing practices, including unit testing, integration testing, API testing, and UI/component testing. Clear communicator who can work effectively with product, design, engineering, QA, and DevOps team members in a fast-moving delivery environment.

It would be great for you to have some of these nice to haves aswell:

Experience with Storybook or similar tools for documenting and testing shared components. Experience in utility, energy analytics, forecasting, or grid-impact domains. Exposure to multi-repo engineering environments. Familiarity with frontend performance, accessibility standards, and scalable design-system practices.

Total Rewards

The salary range for this position is $57,000 - $102,000, and individuals may be eligible to participate in our bonus program. Deloitte is fair and competitive when it comes to the salaries of our people. We regularly benchmark across a variety of positions, industries, sectors, targets, and levels. Our approach is grounded on recognizing people's unique strengths and contributions and rewarding the value that they deliver.

Our Total Rewards Package extends well beyond traditional compensation and benefit programs and is designed to recognize employee contributions, encourage personal wellness, and support firm growth. Along with a competitive base salary and variable pay opportunities, we offer a wide array of initiatives that differentiate us as a people-first organization. On top of our regular paid vacation days, some examples include: $4,000 per year for mental health support benefits, a $1,300 flexible benefit spending account, firm-wide closures known as "Deloitte Days", dedicated days of for learning (known as Development and Innovation Days), flexible work arrangements and a hybrid work structure.

Our promise to our people: Deloitte is where potential comes to life.

Be yourself, and more.

We are a group of talented people who want to learn, gain experience, and develop skills. Wherever you are in your career, we want you to advance.

You Shape How We Make Impact.

Diverse perspectives and life experiences make us better. Whoever you are and wherever you’re from, we want you to feel like you belong here. We provide flexible working options to support you and how you can contribute.

Be the leader you want to be

Some guide teams, some change culture, some build essential expertise. We offer opportunities and experiences that support your continuing growth as a leader.

Have as many careers as you want.

We are uniquely able to offer you new challenges and roles – and prepare you for them. We bring together people with unique experiences and talents, and we are the place to develop a lasting network of friends, peers, and mentors.

The next step is yours

At Deloitte, we are all about doing business inclusively – that starts with having diverse colleagues of all abilities. Deloitte encourages applications from all qualified candidates who represent the full diversity of communities across Canada. This includes, but is not limited to, people with disabilities, candidates from Indigenous communities, and candidates from the Black community in support of living our values, creating a culture of Diversity Equity and Inclusion and our commitment to our AccessAbility Action Plan, Reconciliation Action Plan and the BlackNorth Initiative.

We encourage you to connect with us at accessiblecareers@deloitte.ca if you require an accommodation for the recruitment process (including alternate formats of materials, accessible meeting rooms or other accommodations) or indigenouscareers@deloitte.ca for any questions relating to careers for Indigenous peoples at Deloitte (First Nations, Inuit, Métis).

When you apply, we will review your application using Deloitte's Global Talent Standards to ensure a consistent recruitment experience. Our recruitment advisors and hiring teams will utilize human screening combined with AI technology to help identify the skills and qualities that matter most to our business, while safeguarding your privacy and using AI responsibly.

Deloitte Canada has 20 offices with representation across most of the country. We acknowledge that Deloitte offices stand on traditional, treaty, and unceded territories in what is now known as Canada. We recognize that Indigenous Peoples have been the caretakers of this land since time immemorial, nurturing its resources and preserving its natural beauty. We acknowledge this land is still home to many First Nations, Inuit, and Métis Peoples, who continue to maintain their deep connection to the land and its sacred teachings. We humbly acknowledge that we are all Treaty people, and we commit to fostering a relationship of respect, collaboration, and stewardship with Indigenous communities in our shared goal of reconciliation and environmental sustainability.