Top Software Engineer Jobs in Toronto

Lead a backend and cloud platform engineering team responsible for Node.js/NestJS services on AWS. Own APIs, event-driven processing, file ingestion, data synchronization, CI/CD, infrastructure, observability, incident response, and production operations. Drive vendor-to-internal support transition through knowledge transfer, runbooks, on-call practices, and operational readiness. Mentor engineers, prioritize work, conduct technical reviews, collaborate with stakeholders, and improve system reliability, security, and recoverability.

Design and build scalable APIs, cloud-native services, and applications supporting millions of users. Own service reliability, performance, testing, production incident response, and continuous improvement. Collaborate with product and architecture teams, participate in design and code reviews, contribute to technical decisions, and mentor engineers while delivering high-quality software in a fast-paced environment.

Design, develop, test, deploy, and support scalable full-stack web applications and platform capabilities using Python, Django, TypeScript, and React. Build APIs, integrations, AI-enabled features, and reusable application components across AWS and Azure. Own software from design through production support, contributing to CI/CD, observability, security, modernization, and reliability. Collaborate with Product, Architecture, Data & AI, Security, and Platform Reliability teams while mentoring engineers and maintaining high-quality production systems.

Own the technical direction and roadmap for Robinhood’s Developer Infrastructure organization. Lead Bazel-based monorepo and remote build infrastructure, large-scale CI/CD, test environments, developer platforms, and tooling across multiple languages. Drive AI and agentic systems throughout the software development lifecycle, establish technical standards, and unify four engineering teams around a long-term vision. Mentor senior engineers and influence company-wide engineering strategy.

Own complex customer issues through investigation, root cause analysis, and fix validation while developing scalable full-stack SaaS applications. Collaborate with customers, support, product, and engineering teams to improve product stability and roadmap priorities. Provide technical guidance, mentor others, troubleshoot production systems, optimize performance, research technologies, and participate in on-call support.

Build scalable, high-performance front-end solutions for 3D interior-decor experiences using computer vision. Collaborate with product, design, stakeholders, and engineering teams to deliver customer-focused features. Own systems through development, deployment, operation, and continuous improvement while supporting partners and maintaining high quality. The role offers mentorship and growth in a remote-first environment.

The Staff Software Engineer will lead technical strategies for the Cash App Banking team, overseeing architectural decisions, mentoring engineers, and developing financial products that improve customer banking experiences.

Own the strategy and development of AlphaSense’s Excel plugin, integrating AI-driven market intelligence into Microsoft Excel. Build performant, resilient, cross-platform applications with enterprise deployment, authentication, synchronization, and state management. Establish Office integration best practices, optimize complex integrations, and mentor engineers developing desktop experiences for financial professionals.

Own end-to-end client deployments of an agentic AI healthcare automation platform. Build full-stack backend services, integrations, workflow automations, and production infrastructure using Python, TypeScript, and AWS. Lead technical demos, prototypes, workflow mapping, issue resolution, and client stakeholder relationships. Extend orchestration tools and integration libraries while translating deployment insights into platform improvements. Support healthcare integrations including HL7, FHIR, DICOM, RIS/PACS, EMR webhooks, and scheduling systems.

Build and deploy LLM-powered features for clinical, patient, and operational workflows. Responsibilities include prompt design, retrieval, tool use, agent orchestration, evaluation harnesses, feedback loops, production operations, and AI engineering tooling. Partner with clinical, product, and safety stakeholders to ensure responsible healthcare-grade AI. Mentor teammates, communicate model behavior clearly, and stay current with emerging AI research and development practices.

Develop and operate scalable backend systems for an AI-driven defense platform against digital threats, ensuring production reliability and collaborating across teams.

The Software Engineer, Infrastructure will develop backend infrastructure for scalable monitoring of digital threats using AI, enhancing systems for faster deployment and reliability.

Join a new Toronto engineering office and work across the stack building an agentic AI platform for enterprise accounting. Contribute to web development, databases, distributed systems, and frontend (TypeScript/React/Redux). Help define office culture and scale product and team.

Leads AI engineering strategy across clinical, patient, and operational products. Designs and operates production retrieval, orchestration, agentic, and evaluation systems, establishing standards for AI safety, observability, responsible deployment, and reliability. Partners with clinical, product, and executive leaders on the AI roadmap, mentors engineers, evaluates emerging models and tools, and codes regularly in Python.

Build and scale global payments and treasury systems using resilient, event-driven, microservice-based architecture. Design and implement cloud-native services, client-facing APIs, distributed systems, payment rails, financial ledgers, and reconciliation solutions. Collaborate independently and across teams, troubleshoot complex issues, maintain high-quality tested code, and contribute to technical and product goal definition.

Design and build autonomous agents for pharmaceutical workflows, including orchestration, communication systems, integrations with pharmacy systems, evaluation infrastructure, observability, and real-time processing across pharmacy networks. The role involves backend-focused software engineering, cloud infrastructure, distributed systems, healthcare data standards, architectural decisions, end-to-end ownership, and occasional customer interaction.

Build and operate full-stack software integrating healthcare provider systems with PocketHealth. Responsibilities include architecture, development, deployment, production operations, workflow automation, scalable integrations, patient-flow improvements, observability, incident response, and customer-facing applications. The role requires managing multiple deployments, owning product and design decisions, collaborating with technical and nontechnical stakeholders, and using AI-assisted development tools to deliver reliable solutions.

Design and build distributed systems for a high-performance CI/CD execution platform. Responsibilities include orchestrating Supabase Branch lifecycle operations, provisioning ephemeral sandboxed environments on AWS, scheduling concurrent builds, optimizing pipelines through caching and artifact reuse, handling retries and failures, instrumenting observability, and developing configuration and infrastructure integrations. The role requires strong Go and TypeScript skills, cloud infrastructure experience, and a production operations mindset.

Build and maintain scalable integration and end-to-end test automation frameworks and CI pipelines. Optimize test execution, improve stability and reporting, support engineering teams with triage and best practices, write technical specs/ADRs, participate in on-call rotation, and collaborate across regions to evolve the companys test strategy and developer productivity tooling.

Lead architecture and technical direction for scalable SaaS platform capabilities. Build distributed services, APIs, event-driven systems, and AI-enabled features using LLMs, retrieval, orchestration, and evaluation pipelines. Establish secure, reliable cloud infrastructure and agentic software development practices. Drive architecture reviews, testing, observability, CI/CD quality, and production readiness while mentoring engineers and leading complex cross-functional initiatives.

Build, deploy, operate, and improve backend services and cloud infrastructure supporting Mozilla products. Responsibilities include backend development, API and data contract design, production monitoring, incident response, on-call support, releases, security and privacy reviews, code reviews, and mentoring. The role requires end-to-end service ownership, collaboration with frontend and cloud teams, and maintaining reliable production systems using modern observability and DevOps practices.

Build and own full-stack features across patient, clinician, and operational healthcare products. Responsibilities include architecture, scalable coding, testing, CI/CD, code review, technical discussions, stakeholder collaboration, and mentoring. The role requires daily use of AI coding tools and ownership of projects from ideation through rollout. Experience with healthcare, EHR integrations, regulated domains, or consumer startups is beneficial.

Build and scale CaptivateIQ’s sales planning platform using Django, Python, React, and TypeScript. Develop quota, capacity, territory management, and AI-enabled revenue planning capabilities. Collaborate with product and design, optimize performance for enterprise data volumes, design reliable APIs and data models, maintain production observability and testing standards, and mentor engineers. The role also supports AI evaluation, guardrails, feedback loops, and human-in-the-loop workflows.

Build customer-facing growth and engagement features across acquisition, activation, retention, and monetization. Design and analyze experiments using feature flags and A/B testing, develop instrumentation and event pipelines, improve performance and scalability, and contribute to architecture and technical strategy. Collaborate with Product, Design, Data, Marketing, and Customer Success while mentoring engineers and promoting reliable, high-quality engineering practices.

Develop and maintain a low-latency, high-performance game streaming application across multiple platforms. Responsibilities include UI, video encoding and decoding, networking, input devices, video rendering, UDP protocols, and production C development. The role involves solving complex performance challenges, deploying code to millions of users, collaborating with a globally distributed team, mentoring engineers, and responding to customer needs.