Top Software Engineer Jobs in Toronto

Design and implement robust Rust services for trading and payments, focusing on performance and user impact while collaborating on distributed systems architecture.

Design and build full‑stack, agent‑first web applications and scalable cloud-native APIs; partner with AI Engineers to integrate models and data flows; lead architecture, mentor engineers, rapidly prototype AI interaction models, and drive cross-functional delivery.

Lead design and delivery of enterprise-scale AI systems (including RAG and multi-agent architectures), drive AI strategy and POCs, embed solutions with business units, mentor engineers, establish MLOps/LLMOps practices, and scale prototypes into production.

The Senior Software Engineer, AI will develop and maintain AI/ML features, implement models, and collaborate on innovative solutions within a cross-functional team.

The Senior Software Engineer will develop solutions, mentor junior developers, collaborate with teams, and design user experiences for Supercast's platform, managing project success criteria.

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 eBay's streaming data platform, ensuring reliability and efficiency, troubleshooting issues, and developing new features and automation tools.

The Senior Software Engineer - AI will develop AI-driven systems, integrate models, provide technical leadership, ensure quality, and collaborate across functions in a cross-functional team.

As a Senior Software Engineer, you will develop AI-powered systems to enhance accounting workflows, build backend services, and ensure optimal performance and reliability of AI solutions.

The Principal Software Engineer-AI will lead the development of backend and orchestration systems for AI applications, mentor engineers, and drive multi-quarter initiatives while ensuring system reliability and performance at scale.

Design and develop scalable software applications, implement automated testing, mentor junior developers, and optimize performance in a remote environment.

Lead and mentor a software development team focusing on cloud data platform components. Drive business initiatives, enhance engineering practices, and ensure project delivery. Collaborate across teams to provide real-time data-centric experiences.

As a Senior Software Developer on the Platform Experience team, you'll enhance system reliability, resolve production issues, and collaborate with product teams to optimize platform tools.

The Senior Software Engineer will design and maintain backend systems, advance simulation and optimization for solar design, and mentor team members.

Lead design and implementation of automated, cloud-scale Elasticsearch benchmarking tooling and methodologies. Drive performance testing, regression detection, reporting, troubleshooting, capacity planning, and mentor cross-functional teams to resolve performance issues.

Lead reliability and DevOps/SRE practices for Grafana Cloud k6, establishing SLIs/SLOs, incident response, observability, and operational standards. Guide design and operation of large-scale distributed systems, improve reliability through metrics and runbooks, and mentor teams toward operational ownership while expanding into broader product and architectural leadership.

As a Senior Software Engineer, you will develop and maintain Alpaca's platform services, including event streaming infrastructure and authentication systems, while ensuring software quality and reliability.

As a Staff Software Engineer at Arc, you will lead the design and development of a new AI-native banking platform, focusing on reliability and scalable systems for cash management and treasury solutions, while influencing product direction and mentoring team members.

As a Staff Software Engineer, you will lead architectural decisions, mentor engineers, and drive the design of scalable SaaS solutions in a collaborative team environment.

As a Sr. Software Engineer at VGS, you'll develop and maintain the Credential Management Platform and enhance the Event Pipeline, collaborating across teams to build high-throughput services.

Design, implement, and own end-to-end scanning engine components in Python and Go. Improve scalability, performance, and reliability for large distributed workloads; partner with product, security, and data teams; drive architecture, code quality, observability, and mentor engineers.

As a Staff Software Engineer, you will lead projects, mentor engineers, enhance cloud infrastructure, and ensure alignment with engineering standards at PayPal.

The Staff Software Engineer will lead architectural modernization, collaborate across teams, develop proofs of concept, mentor engineers, and ensure technical excellence in delivering high-quality software solutions.

Lead the architectural direction of Nubank's Global Debt Resolution platform, ensuring scalable and compliant solutions across Lending and Credit domains, while mentoring engineers and collaborating with business leaders.

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