Top Software Engineer Jobs in Toronto

Founding engineering member building an AI-driven life-sciences SaaS platform. Own features end-to-end from design to production support, drive technical solutions, enforce best practices, perform expert code reviews, and mentor engineers to grow the team and deliver scalable, high-volume products.

Lead development of an AI-first enterprise SaaS platform: own feature implementation from design to production, collaborate on technical design, mentor engineers, perform expert code reviews, define engineering best practices, and support production systems using AI-assisted engineering tools.

Lead design, build, and 운영 of CI/CD platform components: self-hosted GitHub Actions runners on GKE, ArgoCD GitOps topology, Helm charts, and Jenkins platform. Deliver self-service tooling and migrations, ensure pipeline reliability with Datadog and PagerDuty, manage artifacts and secrets, and collaborate globally to own architecture, incidents, and long-term maintenance.

Lead architecture and delivery of scalable SaaS and hardware-integrated security systems. Drive firmware/OS integration, edge processing optimization, AWS-based data ingestion and BI, enforce code quality and security (SOC 2), mentor engineers, and incorporate AI into products.

Lead architecture and hands-on development of a kids and family financial product. Drive technical direction, mentor a small engineering team, ensure security/compliance in a regulated financial environment, deliver backend services (.NET/C#/SQL) and frontend components (Angular/TypeScript), collaborate with Product/Design/QA, and maintain CI/CD, observability, and on-call responsibilities.

Design, build, and maintain full-stack features for a life‑sciences SaaS platform using Python backends (FastAPI/Django) and React/TypeScript frontends. Develop microservices, APIs, secure auth, database schemas, tests, and ensure compliance with 21 CFR Part 11/HIPAA/GxP. Collaborate in Agile teams, support validation activities, and mentor junior engineers.

Design and build highly scalable, resilient distributed services and APIs for eBay's Shipping Platform. Optimize low-latency data pipelines, develop automated unit/integration/E2E tests, collaborate with product and operations, mentor engineers, and drive architectural and productivity improvements.

Design, scale, and performance-tune GraphQL APIs, gRPC services, and SQL queries for iCasino features. Own complex technical problems, build end-to-end integrations with game providers, improve production scalability, set up DataDog monitoring, participate in on-call rotations, and mentor other engineers.

Lead design and implementation of scalable APIs and agent communication layers for an AI-agent driven advertising marketplace. Build high-throughput backend systems, integrate agent frameworks and adtech partners, drive architecture for authentication and protocols, mentor engineers, and prototype agent communication patterns while collaborating with product and design.

Design, implement, and optimize Elasticsearch core storage and query engine components for logs/metrics workloads. Lead architecture, resolve performance bottlenecks, improve storage efficiency and query execution, mentor engineers, collaborate across distributed teams, triage community issues, and write idiomatic modern Java.

Drive architecture and design of Elasticsearch core storage and query engine for logs and metrics. Improve storage efficiency, indexing layouts, serialization, and performance; lead cross-team initiatives; mentor engineers; triage community issues; and write idiomatic modern Java.

Senior Software Engineer for the Streams UI team (Fleet/Streams) building intuitive TypeScript/React front-ends and Node.js back-ends. Own end-to-end delivery, drive architecture and coding standards, perform code reviews, collaborate async across timezones, partner with designers and PMs, and improve usability, performance, and scalability for large-data log ingestion and management.

Contribute to the development of Waabi World, improve simulation scalability, and design orchestration software for autonomous vehicle simulations.

Design and implement high-throughput database integrations and replication into ClickHouse. Improve system reliability, debug production issues using observability tools, write documentation, participate in on-call rotation, and collaborate with customers and cross-functional teams to drive product improvements.

Build and own full-stack servicing features end-to-end using Next.js/React, NestJS GraphQL, and .NET/C#. Architect, deploy, and operate services on AWS/EKS, leverage AI-assisted development workflows, collaborate with product and distributed teams, mentor engineers, and participate in on-call rotation to ensure production reliability.

Lead design and implementation of scalable, secure Forma Data cloud services. Act as technical lead across full software lifecycle, write and operate cloud services, mentor engineers, solve complex distributed-system problems, and collaborate globally to integrate SaaS products with Autodesk tools.

Lead design and delivery of the Structured Record Storage platform: CDC/Kafka integration, schema automation, access APIs, and fleet management. Set architecture standards, improve fleet-wide operations (capacity, monitoring, tuning, replication), drive migrations and schema lifecycle, enforce observability and IaC, mentor engineers, coordinate cross-team tradeoffs, and own reliability and incident response.

Design, build, test, and deploy scalable full‑stack web applications and services for preconstruction bidding and risk management. Implement AI-powered features, APIs, and microservices, ensure performance/security, participate in architecture and code reviews, and mentor other developers in an agile environment.

Lead end-to-end design and delivery of backend, API, and authentication systems for a high-scale real-time calling platform. Architect APIs and auth models, write design docs, improve observability and DevEx, mentor engineers, collaborate with Product and Design, participate in on-call, and ensure reliability and performance.

Design and build distributed backend systems, microservices, and near-real-time data ingestion and processing. Scale an incrementality experimentation platform, add AI-powered workflows, extend data integrations and partner exports, and contribute frontend components as needed to deliver end-to-end product features.

Lead architecture and long-term technical direction for Docker Hardened Images (DHI). Define platform standards for image and Helm chart hardening, supply-chain posture (SBOM, SLSA, signing), and distribution. Drive cross-functional roadmaps, resolve ambiguous packaging/security problems, influence upstream OSS, mentor senior engineers, shape test and tooling strategy, and participate in on-call incident response.

The role involves integrating generative models into Intangible Studio, evolving job systems with TypeScript and Node, and maintaining high visual quality standards.

The Senior Software Engineer will build and maintain the Boreal hosting platform and Moose open-source project, mentor junior team members, and collaborate with product and design teams.

The Staff Software Developer will lead AI-driven solution development, mentor engineers, and collaborate on product roadmaps, emphasizing efficient coding and technical best practices.

As a Data Engineering Architect, lead the transformation of data engineering into a modern platform, oversee architecture and technical leadership, design scalable systems, ensure data quality and governance, and mentor teams for a data-driven culture.