Top Software Engineer Jobs in Toronto

Design, implement, and maintain high-performance SBT Content microservices for P&C insurance. Collaborate in agile teams, apply AI-assisted coding, ensure test coverage, CI/CD, observability, and scalable cloud deployments.

Seeking a motivated Software Developer to design and develop software applications, collaborate on architectural standards, and engage in agile practices.

Lead design and implementation of scalable backend services and frontend features across a polyglot stack. Drive architecture, API design, testing, CI/CD, observability, and operational excellence. Use AI tools extensively to generate, test, debug, and document code. Mentor engineers, conduct reviews, participate in on-call rotations, and collaborate cross-functionally to deliver reliable, high-performance dealer-facing SaaS solutions on AWS.

Full‑stack developer building front-end web apps and back-end services, using AI-assisted and agentic tools. Implement RESTful APIs, write tests and metrics, monitor platform performance, collaborate with product/support, perform code reviews, and apply SDLC and security best practices.

Senior full-stack developer to design, build, and optimize cloud-native microservices using Angular, Spring Boot and AI/ML techniques. Troubleshoot, ensure security and performance, integrate systems, apply AI-driven code analysis, and mentor junior developers across the SDLC.

Operate, monitor, and optimize large-scale AI compute clusters built on the Wafer-Scale Engine. Develop and own software for cluster operations (monitoring, automation, APIs, dashboards), deploy and debug Docker-based services, troubleshoot distributed systems, maximize compute capacity, and participate in a 24/7 on-call rotation while collaborating cross-functionally to improve operational visibility and reliability.

Design, build, and execute automated tests for cloud-native, microservices-based cybersecurity products. Integrate tests into CI/CD pipelines, document and track defects, collaborate with engineers, adopt AI testing tools, and improve test frameworks and processes under senior guidance.

Build and maintain an agentic platform that transforms high-stakes medical and legal casework into structured context. Work across the full stack: agent architectures, eval frameworks, data ingestion/indexing, and user-facing tooling. Ship workflows, design reliability-focused evals and guardrails, iterate with user feedback, and set patterns for AI-native development in a healthcare context.

Build and maintain full‑stack, AI-enabled healthcare applications. Implement frontend interfaces (React/Next.js), backend services and REST APIs (Node.js/Python), integrate AI/LLM features, use relational databases, deploy to cloud (AWS/GCP/Azure), write tests, participate in code reviews, troubleshoot production, and improve system performance, reliability, and security.

Build and maintain responsive, production-scale frontend web applications for an AI Receptionist product. Design UI for configuring conversational agents, integrate with backend services (APIs, WebSockets, streaming), optimize performance and accessibility, establish frontend architecture and best practices, and mentor engineers.

Design and implement the core components of the Agents Python framework, focusing on API and abstraction development for AI-driven applications.

Design and develop functionalities for the Agents framework, iterate on feedback, and create documentation while working with various programming languages.

Design, develop, and deliver full-stack features for e-commerce apps. Convert user feedback into product improvements, maintain and optimize high-traffic back-end systems, perform code and design reviews, and improve development and deployment processes.

Develop and extend data ingestion pipelines for AI model training, manage cloud infrastructure, and collaborate with AI scientists. Bring new audio data sources into the system.

Build and own large-scale data ingestion services and SDKs, translate business requirements into technical designs, improve performance and reliability, provide production support, and drive engineering best practices for near real-time analytics pipelines.

Lead full-stack design and development for Capital One's travel platform, owning architecture, implementing front-end and back-end features, improving engineering tools and practices, mentoring junior engineers, and integrating with partners like Brex while leveraging cloud services and databases.

Lead technical strategy and deliver backend systems for search and recommendation at scale. Collaborate with PM, design, and analytics to define and execute business-impacting projects. Own operations, availability, monitoring, and on-call practices while mentoring engineers and setting code and design standards.

Build and ship end-to-end features for Dover's marketplace and ATS. Propose product ideas, implement designs, launch, iterate in production, and collaborate closely with a small engineering team to move quickly and maintain high quality.

Join as the founding full-stack engineer to extend a TypeScript React/Next.js prototype, design product features, integrate AI/OCR, write tests and infrastructure, talk to users, and iterate quickly to drive growth.

Design, build, test, and support secure, scalable Salesforce solutions using Apex, Lightning Web Components, flows, and API integrations. Collaborate with product, architecture, risk, and delivery teams to document designs and trade-offs, ensure auditability and controlled data access, adopt AI responsibly, and maintain operational readiness through DevOps and quality engineering practices.

Develop scalable backend software and tools for upgrading and deploying thousands of production servers. Responsibilities include production error audits, log analysis, CI/CD pipeline maintenance, customer escalation triage, bug resolution, incident response, root cause analysis, and process automation. The role uses backend technologies, scripting, containerization, and internet optimization techniques in a flexible cloud and edge computing environment.

Lead the design, development, deployment, and maintenance of scalable cloud-native platform capabilities for Walmart Connect’s sponsored search ad server. Build infrastructure, tooling, AI/ML frameworks, and distributed systems; conduct design reviews; drive software lifecycle activities; mentor engineers; influence architecture and technical decisions; and collaborate across teams to translate complex business needs into reliable, data-driven solutions.

Design, build, and scale production-grade agentic workflows and AI applications. Develop AI agents using TypeScript, LangChain, LangGraph, and LLMs; build Java REST services; integrate APIs and distributed data platforms; and establish practices for prompt evaluation, reliability, guardrails, observability, and performance. Collaborate on architecture and ambiguous product requirements, optimize AI workload costs and reliability, mentor junior developers, and contribute to technical direction.

Join Kobo's Web team to develop and maintain e-commerce features across front-end, back-end, CI/CD and infrastructure. Own requirements, implementation, testing, deployment and monitoring of customer-facing code, working in an agile team to deliver high-quality solutions.

Design, build, test, and document Tailscale's client-side networking software. Enhance connectivity between clients, subnet routers, and exit nodes. Diagnose and resolve complex customer network escalations, optimize performance and reliability, collaborate with product and engineering, adopt security-centric designs, and engage with the open-source community.