Top Software Engineer Jobs in Ottawa

Develop and maintain high-performance 5G L1/L2 baseband software using C/C++. Collaborate with global teams to design, debug, test, and integrate features, follow industry standards, participate in code and design reviews, and prepare systems for 6G readiness.

Design, develop, and optimize high-performance 5G L1/L2 software on GPP platforms. Collaborate with global teams across the product lifecycle, implement 5G NR features (with 6G readiness), debug/test/integrate to standards, and participate in design and code reviews.

Join Ericsson's L1 Software Development team to design, implement, and test high-performance Physical Layer baseband features for 5G RAN on multi-core ASIC and cloud/COTS platforms. Develop embedded, real-time software in C/C++, integrate and automate tests, optimize for containerized/cloud environments, participate in code reviews, and apply wireless protocol knowledge (NR/LTE/WCDMA) while working in agile, international teams.

Build and operate ML training and serving infrastructure: design, develop, and launch backend systems, support availability and on-call, collaborate cross-functionally, and improve developer velocity.

Build and evolve core AI platform capabilities: design shared execution patterns, APIs, and backend services to support multi-step GenAI workflows, model integrations, and scalable production systems. Collaborate with AI engineers, data scientists, and product partners to turn emerging AI use cases into reliable, extensible platform features.

The Software Engineer will enhance Lending products for Cash App, focusing on building complex systems, APIs, and collaborating with multiple teams to support economic empowerment through accessible credit.

As a Software Engineer, you will design and build backend services and integrations for financial operations, focusing on scalable technology solutions and AI enablement, while collaborating with cross-functional teams to ensure compliance and data integrity.

Build and maintain scalable integration and end-to-end test automation frameworks and CI pipelines. Optimize test execution, improve stability and reporting, support engineering teams with triage and best practices, write technical specs/ADRs, participate in on-call rotation, and collaborate across regions to evolve the companys test strategy and developer productivity tooling.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

The Software Engineer II will ship features to enhance Affirm's marketplace, supporting product development and collaborating with design and analytics teams while ensuring operational stability.

As a Staff Fullstack Software Engineer, you'll optimize user monetization systems at Dropbox, leading technical strategies for checkout and subscriptions while mentoring engineers.

As a Software Engineer II, you'll implement critical features, collaborate with teams, maintain full stack systems, and ensure high-quality code in a dynamic environment.

You will design, develop, and launch backend systems, APIs, and collaborate with cross-functional teams to support product development and operations.

The Senior Infrastructure Software Engineer will build and manage a scalable, in-house search platform, ensuring seamless user experiences and expanding capabilities for a global user base.

Design, build, and operate large-scale distributed storage systems ensuring durability, availability, and performance. Implement replication, erasure coding, and lifecycle management; write high-quality Go and Rust code; participate in on-call rotations; troubleshoot production issues; collaborate across networking, hardware, and capacity teams; own scoped projects and drive infrastructure architecture and reliability improvements.

The Senior Infrastructure Software Engineer will re-architect Identity systems, focusing on large-scale distributed systems design, API design, and collaborate with teams to implement wide-ranging use cases while mentoring junior engineers.

Build and maintain backend systems for money movement and card ledger features. Design, develop, and launch scalable APIs and services (Python or Kotlin) using AWS, MySQL, and Kubernetes. Collaborate with product, design, data science, and cross-functional teams, support operations and on-call, create and monitor metrics, participate in code reviews and hiring, and deliver well-tested, extensible solutions.

The role involves designing and expanding the platform's backend to enhance merchant lifecycle orchestration, executing technical strategy, and improving engineering standards.

As a Software Engineer in Tools & Services, you will design testing frameworks, contribute to code quality, and work with a dynamic team on high-quality software solutions.

Design and implement CIAM backend services for registration, authentication, and account management across B2C and B2B platforms, utilizing security standards and automation practices.

Own and evolve Directive's web surfaces for Stratos and company sites: build campaign and reporting UIs, integrate ad/CRM APIs, manage background jobs, containers, CI/CD, databases, telemetry, auth, and LLM integrations; stabilize inherited code and ship production features iteratively.

Design and build a centralized reliability platform for production systems, integrating distributed-systems engineering with AI-assisted tools. Implement AI agents for incident triage, log/trace summarization, and developer-facing APIs. Own projects end-to-end and collaborate with product, infra, data, and SRE teams to iterate and improve system health and debuggability.

Seeking a Software Engineer/Senior Software Engineer to design, develop, and deliver quality backend services and APIs using Go, with emphasis on Kubernetes and cloud services.

Lead technical strategy and architecture for Coinbase Payments: design and evolve high‑availability, low‑latency funds‑flow and rails systems, drive cross‑team initiatives and reliability improvements, enforce financial correctness, mentor senior engineers, and align stakeholders across product, risk, and compliance.

Lead design and implementation of Affirm's Lakehouse Platform (Iceberg, Spark, Snowflake). Define technical strategy, enable secure governed access, improve analytics engineering practices, optimize performance and cost, operate at scale, mentor engineers, and collaborate cross-functionally to deliver reliable, discoverable, and cost-efficient analytical data infrastructure.