Location: Toronto, Ontario

Role Overview
Our client is a rapidly growing enterprise sustainability platform that helps leading organizations automate measurement of their environmental impact and accelerate their transition to profitable climate action. With partnerships across major financial institutions and industry associations, they're building the data infrastructure that enables businesses to measure, forecast, and reduce their climate footprint at scale across North America.

Key Responsibilities

Own end-to-end development of secure, scalable data pipelines that ingest, validate, and process sensitive operational data from enterprise customers

Build and maintain high-performance backend services in Node.js/TypeScript and Python that power analytics, forecasting, and scenario modeling for sustainability metrics

Design and implement database-driven systems using PostgreSQL that handle complex data aggregation, multi-tenant isolation, and audit trail requirements

Architect real-time data processing workflows that support live calculations, anomaly detection, and client-facing dashboards with strict accuracy and security requirements

Partner with the product and customer teams to translate business problems into scalable technical solutions

Champion ownership of data integrity, system observability, and operational excellence—following financial system standards for security, idempotency, and compliance

Improve developer experience and code quality across the backend stack through thoughtful patterns,



documentation, and mentorship

Actively contribute to product and architectural decisions with solid technical opinions backed by pragmatism

Support customer-facing problem solving through well-designed APIs and self-serve technical solutions that empower autonomy

Must Have Skills

5+ years of production backend development in Node.js and/or Python

Strong proficiency with PostgreSQL and SQL optimization (query design, indexing, performance tuning)

Experience designing and building data pipelines that handle high volume, complex transformations, and strict data accuracy requirements

Proven ability to architect systems with security, scalability, and reliability at the core

Comfort working in a startup environment with ambiguity, shifting priorities, and cross-functional collaboration

Passion for building systems that create meaningful impact

Nice to Have Skills

Experience with financial systems, ledger-based architectures, or other compliance-heavy domains

Background in data platform engineering, analytics systems, or time-series data processing

Familiarity with GCP (Google Cloud Platform) or other cloud infrastructure

Experience with asynchronous microservice architectures or event-driven systems

Knowledge of carbon accounting, ESG, or environmental sustainability concepts

Experience working with AI-assisted coding tools

Track record of mentoring engineers and setting technical standards

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📌 Senior Backend Developer (Ontario)
🏢 GuruLink
📍 Ontario