Top Software Engineer Jobs in Ottawa

Develop and integrate scheduler, baseband, and radio resource management software for 5G/6G Cloud RAN vDU systems. Translate 3GPP standards into reliable embedded real-time software, debug complex issues, create development tools, and contribute to testing, documentation, CI/CD, and AI/ML-enabled RAN solutions.

Lead technical strategy and execution for a full-stack card experiences team. Design and launch scalable backend systems and web or mobile applications, collaborate with product, design, analytics, risk, and operations, and own features from problem definition through production monitoring. Improve reliability, on-call operations, code quality, and technical standards while mentoring engineers and applying AI thoughtfully.

Lead the creation of Babylist’s in-house search platform from zero to production. Own architecture for indexing, retrieval, ranking, query understanding, personalization, quality measurement, and conversational search. Set technical and product direction, drive cross-team initiatives, build scalable platforms, partner with product, design, data, and AI teams, and coach senior engineers. The role requires hands-on production search experience, strong system design, user-focused experimentation, and ownership of measurable customer and business outcomes.

Develop and support high-performance software for defence and security applications, including data-processing pipelines and enterprise integrations. Responsibilities include extracting, transforming, validating, enriching, and distributing structured and unstructured data through APIs, databases, files, and messaging systems. The role involves secure software development, automated testing, deployment, troubleshooting, documentation, Agile collaboration, and defect resolution. Candidates need substantial software development experience, including Python, integration protocols, databases, and containerization.

Design, develop, test, and optimize embedded C/C++ software for high-performance networking modules on Linux and VxWorks. Implement real-time OS and networking protocol functionality, create automated tests, troubleshoot performance and reliability issues, and collaborate with factory teams, peer engineers, and vendors for delivery and calibration.

Build and maintain automated functional, integration, performance, and load testing frameworks for distributed cloud systems. Develop agentic test-generation workflows, AI evaluation suites, golden datasets, scoring pipelines, and CI quality gates. Test AI reliability, safety, latency, and cost while validating platform integrations and customer-facing features. Analyze scalability, identify bottlenecks, review designs for testability, and advance engineering quality standards.

Leads development of scalable platform capabilities, infrastructure, tooling, and AI/ML frameworks. Applies cloud-native architecture, manages the full software lifecycle, conducts design reviews, builds AI-driven applications, and ensures reliable production systems. The role mentors engineers, influences architecture, collaborates with stakeholders, and drives continuous improvement through innovation, automation, and engineering best practices.

Develop systems software for the QNX RTOS using C, C++, Python, and Rust. Integrate open-source projects, AI and robotics frameworks, middleware, graphics, networking, and multimedia technologies. Build OS abstraction layers and porting libraries, adapt cross-compilation systems, optimize embedded performance, and create demonstrations for customers and industry events. The role requires strong systems programming, operating systems, POSIX, Linux or QNX, and embedded development knowledge.

Deploy and operate large-scale GPU Kubernetes clusters across cloud providers, onboard new hardware, and improve reliability, performance, utilization, and cost. Automate fault detection and remediation for nodes, GPUs, and high-speed fabrics. Troubleshoot Linux, networking, and production performance issues while collaborating with cloud providers, hardware vendors, researchers, and ML engineers. Participate in a compensated 24x7 on-call rotation.

Build and operate the platform that schedules, runs, and monitors machine learning training, evaluation, and reinforcement-learning workloads on Kubernetes. Responsibilities include job scheduling, workload networking, runtime isolation, checkpoint storage, automation, infrastructure as code, observability, and production troubleshooting. The role collaborates with AI researchers and ML engineers and includes a compensated 24/7 on-call rotation.

Develop software, AI-assisted tools, simulations, analytics, and decision-support algorithms for subsea optical communication systems. Optimize EDFA and Raman backhaul links, assess cable aging, recommend remediation and retesting, automate cable upgrades, and support commissioning and network operations. Collaborate with optical, systems, DSP, and software engineers, interface with customers, demonstrate solutions, and evaluate AI-generated code for correctness, scalability, and maintainability.

Build and ship full-stack web applications and scalable APIs for Affirm’s advertising platform. Break projects into deliverable phases, collaborate with product, design, and analytics partners, write tested and extensible code, monitor service metrics, support on-call operations, review code, and contribute to engineering growth and hiring activities.

Build and operate infrastructure for evaluating coding agents and language models. Own end-to-end features across data models, APIs, background workers, and user interfaces; run sandboxed agent trials; develop scoring and task-quality systems; integrate models and benchmarks; optimize performance, concurrency, migrations, and reliability; and review code. The role requires independent ownership of production backend systems and hands-on LLM evaluation experience.

Contributes to full-stack feature development for real-time, event-driven systems using microservices and microfrontends. Writes tested, scalable code; participates in architecture discussions; uses observability tools to troubleshoot and monitor systems; supports deployments and on-call workflows; and collaborates with senior engineers while continuously developing technical skills.

Develop and implement security and privacy improvements across Tailscale’s codebase. Audit features for vulnerabilities, conduct threat modeling and security analysis, drive mitigations, and promote secure coding practices through guidance and training. The role spends at least half its time writing software and requires expertise in application security, web and API vulnerabilities, cryptography, networking protocols, and platform development.

Design, develop, and maintain high-performance embedded C/C++ software for sensor frameworks. Lead integrations for cameras, LiDAR, radar, GPS/IMU, ISPs, SerDes, and new SoCs; evolve APIs and architecture; port software to hardware platforms; debug system-level issues; create reference applications; and apply static analysis and unit testing. Collaborate with hardware vendors and engineering teams while providing technical leadership across embedded systems.

Build and operate scalable AI platform infrastructure, including LLM and MCP gateways, agent runtimes, evaluation services, routing, quotas, observability, and security controls. Own projects from design through launch and on-call, establish technical standards, collaborate with security and infrastructure teams, and mentor engineers. Develop highly available distributed backend systems supporting AI workloads across Affirm’s financial products and engineering organization.

Architect and operate Affirm’s large-scale Amazon EKS platform, including cluster lifecycle, node management, autoscaling, workload safety standards, infrastructure as code, GitOps delivery, observability, cost and capacity optimization, and self-healing automation. The role leads technical direction, partners cross-functionally, mentors engineers, and participates in on-call incident response.

Lead front-end development for partner-facing financial web products, including embeddable onboarding modules, partner dashboards, and self-service workflows. Build complex multi-step forms and data-heavy interfaces with React and TypeScript, contribute to Node.js server layers, collaborate on API contracts, and work closely with product, design, and backend teams. Own features from design handoff through production release while maintaining multiple codebases and upgrading business-account APIs.

Design, develop, test, and maintain native iOS and iPadOS applications using Swift. Collaborate with distributed engineering and product teams to build features, conduct code reviews, resolve bugs, run experiments, and improve application quality, stability, performance, and user engagement. Contribute transparently to Mozilla’s open-source community.

Lead the architecture and technical strategy for Affirm’s high-volume observability platform. Design telemetry pipelines, log-sampling systems, and observability standards while balancing reliability, performance, and cost. Drive cross-functional initiatives, mentor six engineers, establish engineering and operational standards, support availability and on-call practices, and promote quality through code reviews, documentation, and technical talks.

Build and maintain Knak’s full-stack content creation and rendering systems, including Vue 3 and TypeScript builder interfaces, shared content models, HTML rendering pipelines, and Laravel export services. Collaborate with Product, Design, QA, DevOps, and Engineering teams; make implementation-level design decisions; investigate performance and correctness issues; write unit, integration, and end-to-end tests; participate in code reviews; and improve system quality and maintainability.

Build developer tooling and agent workflows that help engineers safely modify large monorepos. Develop CLIs, desktop integrations, agentic loops, observability interfaces, guardrails, tests, and automation. Lead framework upgrades, language migrations, dependency updates, and large refactors while improving developer workflow, codebase health, adoption, and engineering productivity. Set technical direction and mentor engineers on agent design and tooling.

Build scalable backend services, APIs, microservices, and event-driven solutions supporting personalization, recommendations, search, and AI-driven consumer experiences. Integrate AI/ML capabilities, develop React components, implement search using Elasticsearch or OpenSearch, and work with Kafka, databases, Redis, and cloud-native architectures. Ensure systems are secure, observable, resilient, and low latency while collaborating with AI/ML, data, and engineering teams.

Build and operate scalable backend APIs, microservices, and integration services powering personalization, recommendations, search, and AI-driven consumer experiences. Own features from design through deployment, monitoring, and support. Collaborate with AI/ML and data engineering teams, improve service performance and reliability, contribute to system design and engineering standards, and mentor junior engineers.