Top Software Engineer Jobs in Ottawa

Build and own backend systems, REST APIs, and data layers powering iOS/Android apps for a HIPAA-compliant behavioral health patient portal. Lead architecture, optimize queries and schemas, implement distributed async/event-driven workflows, and deploy services on AWS.

Build tools and infrastructure for training language and multi-agent models in interactive environments; research and implement advances in language modeling and reinforcement learning; contribute to publications and open-source projects.

Build full-stack features across a Next.js frontend and FastAPI backend, implement responsive React UIs, integrate AI-powered workflows and streaming responses, consume auto-generated OpenAPI clients, write tests and optimize performance, and collaborate on code reviews and product design.

The Principal Software Engineer will design and optimize backend applications/services, improve payment integration, and oversee code quality within AWS.

The Software Engineer will design and develop product functionality, collaborate with teams, solve complex problems, and learn new technologies while participating in the product life cycle.

This role involves leading the design, development, and optimization of GPGPU and AI inference libraries, ensuring performance and reliability while mentoring engineers and coordinating with product management.

The Web UI Software Engineer will design and develop frontend web applications for embedded systems, ensuring integration with backend services and delivering exceptional user experiences.

Design and develop scalable web applications for embedded systems, leading architecture efforts and collaborating with cross-functional teams to ensure optimal performance and security.

Design, develop, and maintain scalable backend services for embedded systems, ensuring integration with hardware and providing technical leadership.

Build and maintain backend cloud services for connected devices, focusing on telemetry ingest, device state management, command/control, and integrations. Own features from design through production, use AI-native engineering practices, collaborate with firmware/mobile/platform teams, write and test reliable code, participate in on-call rotations, and contribute to incident response and documentation.

Design, build, deploy, and maintain scalable backend features and APIs for enterprise restaurant products. Lead complex projects, ensure quality with automated testing, monitor rollouts, collaborate with UX/PM, mentor engineers, and partner across teams to improve functionality and reliability for customers.

The Senior Staff Software Engineer will architect Affirm's lakehouse analytics platform, implement data governance, mentor engineers, and collaborate cross-functionally to optimize data infrastructure and solutions.

As a Senior Software Engineer, you'll develop core infrastructure for multi-agent systems, designing backend services and APIs for orchestration, collaborating across teams, and driving technical decisions in a dynamic environment.

Design and build the Neki control plane to provision, scale, and heal sharded PostgreSQL clusters. Implement high-availability, disaster recovery, backup/restore, and migration tooling. Operate distributed, fault-tolerant services on Kubernetes, participate in on-call rotations, and work with customers to translate workloads into platform improvements.

As a Software Engineer - Support, you'll troubleshoot production issues, implement fixes, and collaborate with teams to enhance web platforms. You will also define backlog tickets and contribute to improving incident response processes.

Lead the Treasury team to develop and maintain backend services ensuring reliability in financial transactions, while implementing features and improving systems.

As a Backend Software Developer, you'll design and implement microservices, model data in MongoDB, and ensure systems' reliability and performance. You'll work with AI capabilities and partner integrations, emphasizing CI/CD and observability.

The Senior Backend Software Engineer will lead product development, maintain systems, design APIs, and mentor junior engineers while improving overall product quality.

The Cloud Software Engineer will design distributed systems for observability, ensuring reliability and performance, while automating operational work and collaborating with teams.

Develop real-time graphics software for multi-sensor simulation in autonomous driving. Collaborate with experts to enhance rendering technology and improve simulation realism.

As a Software Developer in Business Intelligence, you'll analyze complex datasets, collaborate with stakeholders, build data models, and develop insights for product optimization in the interior decor industry.

Design behavioral specs, harnesses, and validation systems so AI agents implement reliable full-stack features. Build CI gates, structural tests, linting, knowledge bases, and end-to-end verification. Diagnose failures across spec, harness, and agent layers. Architect and operate production systems across cloud and on-prem environments for regulated energy deployments, prioritizing reliability, observability, and graceful degradation.

Design and implement .NET solutions using AI agents and GitHub Copilot within a spec-driven development process. Ensure test-first delivery, code quality, security, and performance. Collaborate with product, design, and data science, mentor junior engineers, and promote cross-team best practices and process continuity.

Own and maintain the backend stack: build APIs and services in Node.js, manage deployments with Docker/Linux, design scalable REST APIs with Swagger, collaborate with hardware/frontend teams, and prepare sensor datasets for AI/ML pipelines with an eventual path to Lead AI Engineer.

Senior backend engineer will design and implement features, optimize platform performance and scale, write performant Java code, own architecture decisions, and collaborate on data-intensive systems including search and LLM-related components.