Top Software Engineer Jobs in Toronto

Design, build, and operate high-throughput, secure backend services and APIs for a cloud-native identity visibility and intelligence platform. Contribute to system design, resiliency, test automation, and production support (including on-call). Deliver scalable microservices, CI/CD-driven deployments, and infrastructure-as-code.

Design and build high-correctness Rust services on critical platform paths, introduce Rust for safety and performance, own systems end-to-end from architecture to operations, reason about concurrency and async, improve reliability and observability, collaborate across polyglot stacks, and mentor engineers.

As a Senior Software Engineer, you'll own product features, design scalable systems, mentor teammates, and ensure engineering excellence, focusing on real-time workflows for the Dialer team.

As a Senior Full Stack Software Engineer, you will own product features, design scalable systems, mentor teammates, and ensure coding excellence while collaborating with cross-functional teams.

Lead full-stack engineering efforts, architect real-time workflows, mentor engineers, and drive product initiatives across backend services and frontend applications.

Build and maintain Quora's ML platform and ranking infrastructure to serve large-scale ML models. Work on GPU model serving, distributed systems, developer tooling, feature store modernization, and on-call rotation to ensure high availability, performance, and cost efficiency.

Design, develop, test, and maintain scalable cloud-native services, APIs, and platform components. Build distributed SaaS solutions, improve observability and reliability, troubleshoot complex issues, participate in architecture and release activities, collaborate in Agile teams, and mentor junior engineers to advance Autodesk's platform and AI-driven capabilities.

Design and build scalable ETL data pipelines and RESTful APIs/microservices. Improve performance, monitor and troubleshoot data flows, ensure data security/compliance, write tests, and collaborate cross-functionally.

Design, build, and maintain scalable cloud-native services, APIs, and platform components. Contribute to architecture, CI/CD, observability, and operational support. Mentor junior engineers, collaborate with product and UX, and help evolve AI-powered and SaaS platform capabilities to enable cross-product automation and developer productivity.

Develop and maintain Go-based, cross-platform cybersecurity endpoint agents and cloud microservices. Build secure, scalable, fault-tolerant REST APIs using Go and TypeScript, implement CI/CD automation, optimize system performance and resiliency, lead Agile initiatives, mentor engineers, and collaborate cross-functionally to solve complex cybersecurity problems.

Contract senior engineer evaluates AI coding agent interactions (Codex, Claude Code) for engineering judgment, reasoning quality, usefulness, and alignment with strong developer practices; provides opinionated feedback and helps define high-quality interaction standards. ~10-20 hrs/week, $100-$200/hr, short-term through early May.

Design, develop, and maintain core components of the Securities Finance and Collateral Management platform within an agile squad. Improve test automation and integration test coverage, promote TDD/BDD, participate in code reviews and mentoring, apply secure coding standards, and support platform reliability and regulatory security requirements.

Lead design and delivery of the integrations platform supporting 250+ integrations. Build APIs, integrations, tooling, and observability; engage customers; optimize performance and scalability; set architectural direction and best practices.

Lead design and implementation of a scalable data platform handling petabytes of telematics and time-series data. Build and optimize streaming and batch pipelines, design storage solutions, implement observability and data lineage, manage HA infrastructure, and write maintainable Java/Python code while shaping long-term architectural strategy.

The Senior Software Engineer will architect and deliver a CRM and data platform, automate workflows, and integrate data across systems to support growth in the firm.

The Senior Software Developer at SOTI is responsible for developing innovative solutions, mentoring team members, writing scalable code, and supporting full development lifecycle.

The Lead Software Engineer designs, develops, and maintains high-quality software solutions for enterprise financial systems, leading technical direction and mentoring teams through integrations and modernizations.

Develop features and frameworks for Hadoop, Spark, and Iceberg as part of eBay's Analytics Data Platform Team. Lead the design and implementation of technical solutions in a fast-paced agile environment focusing on big data applications.

The role involves building and optimizing big data pipelines, designing data architectures, collaborating with data scientists, and driving technical strategy for data processing infrastructure.

Lead design and delivery of scalable full-stack features, make architectural decisions, improve reliability and observability, mentor engineers, perform reviews and testing, and resolve production issues while collaborating with product, design, and data partners.

Design, build, and operate a cloud-native data and ML platform handling billions of events. Own end-to-end pipelines, feature stores, model training/serving, observability, and data product SLAs. Apply distributed systems, MLOps, and LLM/agentic systems to ensure reliable, low-latency access to features and production models with business-focused impact.

Design, deploy, and operate large-scale workflow orchestration platforms (Argo/Airflow/hybrid) for simulation, ML training, data pipelines and CI/CD. Build SDKs, abstractions, and self-service tooling; ensure reliability, observability, cost-efficiency, GPU and cross-cluster scheduling on Kubernetes across cloud and on-prem; integrate with storage, streaming, registries, and CI/CD; document best practices and mentor engineers.

Lead architecture, build, test, and deploy scalable web and mobile features. Design integrations and onboarding infrastructure, act as a product partner, work directly with customers for custom integrations, leverage LLMs/AI tooling to accelerate delivery, and improve reliability, observability, and performance while mentoring teammates.

Design, build, and maintain scalable, high-performance web applications using React, Node.js, and AWS. Collaborate with cross-functional teams on architecture, implement backend microservices, apply containerization and orchestration, enforce best practices, and solve complex problems. Mentor team members and participate in special projects.

Lead development of CoLab's simulation review capabilities: ingest and process industry-standard simulation data, build high-performance visualization for large datasets, collaborate with Product and customers, and define architecture and UX for a new Simulation product area.