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Position: Senior Back-End Developer
Company: Carbonhound
Location: downtown Toronto ON
The Role
We’re looking for a Senior Backend Developer to join our 10-person team to drive profitable climate action in businesses and make a meaningful difference with their work. This is a hybrid role in downtown Toronto that expects 4 days a week in office with WFH Fridays.

Carbonhound supports over 300 companies to help them automate measurement and reduce their climate impact. We are one of the fastest growing, and impactful companies in the space in Canada with a platform to drive change. Our partnerships with big five banks (i.e. RBC, BMO) and the largest manufacturing associations in the country allows us to influence customers across Canada and the US.
You will work directly with the leadership team to deliver meaningful value to our customers, your team-mates, the climate, and the foundations of our technical platform. This role involves wearing many hats – such as working across our system stack, contributing directly to product and architectural decisions, team culture, and critical code decisions.
Our dream candidate is a lifelong learner who thrives with autonomy, ownership of their work and a collaborative team environment. You will thrive in this role if:
In this role you will be expected to provide client-facing solutions and empower our team to streamline operations.
At Carbonhound, our core values are empathy, integrity, and empowerment - these values embody our commitments to our customers and to each other. Come ready with a passion to work on solutions that help companies transition profitably.
Our client-facing stack is TypeScript – functional React, node.js, PostgreSQL, Docker, GCP, Anthropic, and we’re building new pipelines and integrations in Python. We want someone with a proven track-record of designing and developing mathematical-focused software systems and infrastructure with significant data volume, processing, real-time results, and security requirements (like those found in financial systems). These data systems are currently written in node.js and python to support early team competency but are not limited to either..
Responsibilities

Preferred Skills
Nice to Haves
Our Stack
Our Tools
Benefits
How to apply
Go to our posting to apply! Career page
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Current status: Open/apply now. Date posted: Jun 24 2026 ID: 76258 #LI-DNI