Top Software Engineer Jobs in Toronto

Build and maintain client-facing software within a monolith and microservices architecture. Responsibilities include scaling systems, meeting regional regulatory requirements, launching validated features, developing high-performance REST APIs, tuning database queries, supporting automated testing and continuous releases, participating in on-call support, mentoring junior developers, and collaborating directly with clients when needed.

Build and maintain client-facing software components within a monolith and microservices architecture. Responsibilities include scaling systems for global demand, meeting regional regulatory requirements, and launching validated features. The role requires Java development, REST API delivery, database performance tuning, Snowflake, AWS, automated testing, code reviews, service ownership, continuous releases, on-call support, client interaction, and mentoring junior developers.

Develops and maintains automated UI and API testing frameworks. Creates functional, regression, and end-to-end tests; builds testing tools; reviews requirements, test plans, and test cases; identifies defects, performs root-cause analysis, and improves QA processes. Collaborates with distributed stakeholders and uses GitHub and AI-assisted tools to improve test coverage and efficiency.

Own the architecture and technical direction of Zynque, a live integration platform for supply chain and logistics. Scale throughput, reliability, and multi-tenant performance while customers onboard; establish observability, SLOs, incident practices, and capacity planning. Harden security, data integrity, and fault tolerance, eliminate scaling risks, mentor engineers, and partner with Product on platform investments. The role requires hands-on coding and ownership of enterprise readiness in a high-ambiguity environment.

Own the technical direction and multi-year strategy for a modeling platform spanning backend APIs, SDKs, frontend components, and AI interfaces. Build self-service framework capabilities, make platform architecture decisions, align cross-functional and product engineering teams, partner on computation-engine architecture, and coach engineers toward senior and staff-level impact.

Join the Platform squad to build and maintain a Typescript-based serverless microservices platform on AWS. Improve cloud availability, security, CI/CD, public APIs, data pipelines, internal DevOps libraries, and developer tooling while collaborating across product and engineering teams.

Build and evolve Okta’s Privileged Access Management platform through scalable architecture, backend APIs, and React-based user interfaces. The role involves developing Go backend services, PostgreSQL data models, cloud-based systems, and reliable distributed components. Engineers own features end to end, focusing on scalability, availability, performance, security, maintainability, and customer experience while collaborating on a fully distributed team.

Design, develop, test, integrate, maintain, and support complex enterprise web applications for financial services clients. The role covers the full software development lifecycle and involves technical decision-making, architecture, implementation, quality standards, troubleshooting, documentation, and collaboration across distributed teams and multiple client projects. Strong communication and client relationship skills are essential, along with expertise in Microsoft technologies, Angular, TypeScript, SQL Server, testing, design patterns, and Agile methodologies.

Build and scale full-stack Hiring Assistant features using React and Ruby on Rails. Develop AI-driven hiring workflows for candidate discovery, screening, matching, and onboarding; integrate LLMs, agents, and automation tools; and contribute to architecture, APIs, distributed systems, performance, testing, and scalability. Collaborate with Product, Design, and Data while improving engineering velocity and code quality in a high-ownership hybrid environment.

Own and maintain an integration testing framework for large-scale technology projects. Translate manual tests into automated scripts, guide testing strategy, and advise development teams on testable architecture. Manage the integration test backlog while writing, executing, and debugging tests for React applications, APIs, microservices, and AWS environments. Establish quality gates in CI/CD pipelines and support framework adoption across distributed Agile teams.

Join Texas Instruments’ Embedded Processing Software Engineering Tools team in Toronto through a first-year Career Accelerator Program. Develop desktop and cloud-based embedded tooling, contribute to complex application software, learn software development life cycles, and work with embedded devices, SDKs, and industry-standard tools. The role requires collaboration, problem-solving, communication, and programming experience with TypeScript, JavaScript, React, HTML, and CSS.

Design, build, test, document, and optimize Tailscale’s client-side networking software. Develop connectivity features for clients, subnet routers, exit nodes, and customer integrations using networking protocols and security-focused engineering. Diagnose complex network issues, support customer escalations, collaborate with product and engineering teams, contribute to open-source projects, and improve software scalability, reliability, performance, and maintainability across platforms.

Develop and maintain scalable, fault-tolerant software for Lyft’s Rider organization. Responsibilities include writing tested code, participating in code reviews and on-call support, debugging distributed systems, managing project deliverables, collaborating with product and engineering teams, improving processes, establishing architecture and roadmaps, and mentoring junior engineers.

Build and deploy software solving complex problems for Stripe’s financial infrastructure. Collaborate on multi-person coding projects, learn unfamiliar systems through research and mentorship, communicate clearly with stakeholders, and use AI tools while rigorously reviewing and validating outputs. Work may span frontend, backend, infrastructure, large codebases, code reviews, production updates, and independently led projects.

Software engineering interns build and ship production software across Stripe’s technology stack, contribute to technical design and code reviews, collaborate with engineers and stakeholders, and learn rapidly with mentorship. Projects may involve payments, fraud detection, payouts, checkout, anomaly detection, and other financial infrastructure. Candidates need computer science fundamentals, programming experience, teamwork or project experience, adaptability, and the ability to use and critically evaluate AI development tools.

Leads software development projects by advising clients, selecting technologies, reviewing code and architecture, mentoring developers, and writing, debugging, optimizing, and testing software. The role improves development processes, supports full software development lifecycle activities, and provides technical leadership across multidisciplinary teams. Strong Angular expertise, openness to Java backend technologies, Agile knowledge, and bilingual French-English communication are required.

Design, develop, test, maintain, and support enterprise software applications, APIs, services, integrations, and user-facing functionality. Translate requirements into technical designs, write maintainable code, participate in Agile planning and code reviews, troubleshoot production issues, and collaborate with analysts, QA, architects, and operations teams. Contribute to automated testing, technical documentation, production support, and continuous engineering improvement.

Develop and operate scalable cloud-based Privileged Access Management services and shared platforms. Design microservices, infrastructure, and multi-tenant systems using AWS, Kubernetes, Docker, Terraform, and distributed data technologies. Lead code and design reviews, write tests, troubleshoot performance issues, and improve service reliability. Collaborate with architects, QA, product, security, and operations teams while mentoring junior engineers and contributing to weekly releases.

Build and operate ingestion, reconciliation, and reporting systems that reconcile card-network and partner settlement files against internal transactions. Deliver end-to-end features for traceability, accounting journals, tax and regulatory reporting, and compliance tooling while ensuring reliability, scalability, and data privacy.

Develop and improve Outschool’s full-stack products using an AI-native development approach. Responsibilities include leading engineering initiatives, collaborating with Product, Design, Data, and Engineering teams, making technical tradeoffs, contributing to AI development practices, participating in agile ceremonies, deployments, and on-call rotations. Senior-level engineers may mentor teammates and influence technical direction.

Design and operate large-scale data and ML platforms supporting audience data, feature stores, training pipelines, model serving, monitoring, and LLM-powered workflows. Own end-to-end data pipelines, reliability, SLAs, observability, and business impact. Apply distributed systems principles, production ML practices, and agentic technologies while collaborating across product and engineering teams in a fully remote environment.

Lead end-to-end technical direction for Grafana’s Session Replay product across frontend, backend, and data systems. Design scalable columnar storage, ingestion pipelines, data models, and query patterns for high-volume session data. Build cross-product investigation workflows connecting replay with observability data, guide architecture, collaborate with customers and internal teams, improve engineering practices, and mentor engineers.

Build and operate a production-grade Microsoft Excel plugin integrating AlphaSense’s AI-driven market intelligence platform. Develop native-feeling Excel experiences, manage complex asynchronous and event-driven integrations, optimize performance and memory usage, and ensure stability across Windows and Mac. Establish engineering best practices for testing, deployment, monitoring, and enterprise updates while mentoring junior engineers. The role directly supports financial analysts and researchers at leading institutions.

Provides staff-level technical leadership for authentication, authorization, account lifecycle, and partner relationship systems. Designs APIs, data models, distributed services, migration strategies, and event-driven architectures. Leads cross-team initiatives, improves testing, observability, deployment safety, and reliability, and mentors engineers. The role requires strong backend and distributed-systems expertise, security-sensitive problem solving, AI-assisted engineering fluency, and experience with production operations.

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.