Top Software Engineer Jobs in Ottawa

Design, build, scale, and operate high-volume payment APIs and distributed systems serving global traffic. Lead complex engineering projects from requirements through production, improve reliability, performance, observability, fault tolerance, and security, and participate in on-call and incident response. Collaborate across product and engineering teams, use AI-assisted development tools responsibly, and mentor engineers through technical reviews and documentation.

Design, build, scale, and operate high-volume payment APIs and distributed systems serving global traffic. Lead complex engineering projects from requirements through production, improve performance, observability, reliability, fault tolerance, and security, and participate in on-call incident response. Collaborate across product and engineering teams, use AI-assisted development tools responsibly, and mentor engineers through technical reviews, documentation, and guidance.

Designs, implements, and optimizes 5G communication-stack components and maintains the platform SDK for Ericsson’s telecommunications products. The role involves low-level Linux development in C, hardware simulation and emulation, silicon and board bring-up, testing, CI pipelines, code reviews, debugging, performance profiling, and regression tracking. The developer collaborates with hardware and global software teams in distributed Scrum environments to ensure platform readiness and integration.

Lead the architecture and evolution of native iOS foundations supporting seller-facing applications. Identify systemic problems, define platform strategy and standards, build prototypes and reference implementations, lead multi-quarter migrations, and establish practices for quality, testing, observability, release safety, and maintainability. Develop senior engineers and create scalable ownership models across teams.

Design, develop, and maintain cloud-native, high-performance user-plane services for 5G Core. Build and optimize packet processing (DPDK), containerized microservices (Docker/Kubernetes) on public cloud (AWS/Azure/GCP). Own end-to-end service lifecycle, contribute to CI/CD, troubleshoot production networking and cloud infrastructure, and improve system performance and reliability.

Build and improve reliable, scalable frontend experiences for Affirm’s pre-checkout products, including Affirm.js, promotional messaging, experimentation, and developer-facing tooling. Use browser debugging, monitoring, metrics, and testing tools to maintain accessible, performant cross-browser experiences. Collaborate with engineers and stakeholders, contribute to code reviews, troubleshoot operational issues, and write clear, well-tested, extensible code.

Build and operate backend infrastructure and APIs for stablecoin-based payments, deposits, withdrawals, and transfers. Own projects from system design through production, improve distributed-system performance and reliability, collaborate with Product, Design, Infrastructure, and Compliance, and contribute to engineering quality through reviews and architectural best practices. The role requires blockchain integration experience and responsible use of generative AI.

Design, build, test, launch, and operate full-stack services automating responses to legal, regulatory, and civil requests. Develop backend systems, internal web tools, and integrations across microservice and event-driven architectures. Collaborate with Counsel, Compliance, and Operations while handling sensitive customer data. Participate in on-call, incident response, code reviews, modernization efforts, and responsible use of AI-powered development tools.

Build and operate backend systems supporting post-transaction card account accuracy, issue resolution, and customer communications. Break down projects, deliver work in phases, collaborate with product and cross-functional teams, monitor system metrics, support availability and on-call operations, and contribute to code reviews and interviews. The role requires backend development experience, distributed systems knowledge, and proficiency in Python or Kotlin, AWS, MySQL, and Kubernetes.

Develop server-side poker game features and gameplay functionality in Go for high-performance, large-scale applications. Build and integrate REST and gRPC APIs, SDKs, tools, and technologies; extend core systems; contribute to architecture, security, scalability, testing, and operations. Collaborate with engineers and cross-functional stakeholders, participate in long-term initiatives, review code, improve processes, and deliver solutions for live mobile game titles.

Participate in a 15-week full-time software engineering internship in Vancouver, Burnaby, or Richmond. Build and ship product features, contribute code to Atlassian products, apply data structures and algorithms, and learn full-lifecycle development through mentorship and collaboration with senior engineers. Work may involve cloud initiatives and AI-driven features.

Develop and deploy slot-game features in Unity and C#, including gameplay, UI/UX, engine systems, and creator tools. Build server-backend functionality, investigate and extend slot-engine systems, define technical tasks, and quickly resolve bugs. The role requires collaboration, strong communication, and delivery under deadlines, with opportunities to work on live mobile games and performance optimization.

Develop and support backend services, UI applications, REST APIs, integrations, and automation using Java, Go, and related technologies. Troubleshoot customer and production issues, perform root-cause analysis, write tests and documentation, participate in code reviews, and make component-level design decisions. The role also involves Docker-based deployments, Linux and Windows scripting, monitoring production systems, and applying software security, cryptography, and PKI principles.

Develop full-stack software tools, frameworks, and applications for Windows and cloud platforms supporting data collection, test automation, and high-volume manufacturing. Build scalable solutions across application and data layers using CI/CD and agile practices. Standardize test frameworks, troubleshoot complex environments, and collaborate with engineering and R&D teams to define requirements. Provide technical guidance while applying modern cloud, web, data science, and test-driven development technologies.

Develop and maintain full-stack imaging applications through design, implementation, testing, support, optimization, and documentation. Build Angular and TypeScript front ends with Node.js or Python back ends on AWS. Conduct code reviews, mentor junior developers, coordinate application support, improve performance and scalability, create validation and technical documentation, and contribute to project planning and continuous professional development.

Develop and optimize embedded systems software for automotive infotainment, telematics, and connected-car platforms. Responsibilities include performance measurement, bottleneck analysis, system-level optimization, automated diagnostics, memory and power optimization, telemetry pipelines, remote logging, and hardware accelerator integration. The role requires embedded C/C++, Python, Linux or Android internals, multithreading, and RTOS experience, with preferred expertise in profiling tools and automotive networking.

Develop and enhance configurable SaaS and enterprise software platforms in Java and .NET environments. Responsibilities include analysis, design, software development, collaboration with product owners, and participation in an Agile/Scrum team. The role may involve cloud mobility, data visualization, and artificial intelligence technologies, requiring strong problem-solving, independent work, collaboration, and the ability to learn new concepts quickly.

Develops, tests, deploys, documents, and maintains software applications and RESTful APIs. Evaluates business requirements, creates technical designs, integrates applications, diagnoses issues, and supports system reliability, security, data integrity, and backup processes. The role also contributes to small projects, API security, documentation, and modernization efforts while collaborating with university departments. Bilingual French and English communication is required.

Develops, enhances, tests, documents, and maintains university software applications. Evaluates business requirements, designs technical solutions, writes application code, troubleshoots PeopleSoft and database issues, validates data integrity, supports production systems, and assists with backup and recovery processes. The role also communicates technical concepts to users and contributes to application upgrades and operational efficiency.

Lead the architecture, development, and scaling of data pipelines and infrastructure for a customer-facing Data Lake platform. Build ETL and ingestion systems using GCP, Debezium, Pub/Sub, Dataflow, BigQuery, Python, Golang, and SQL. Establish engineering standards, deliver strategic projects, mentor engineers, influence cross-functional technical decisions, optimize data services, and shape the platform roadmap.

Lead the design, development, deployment, and maintenance of scalable cloud-native platform capabilities for Walmart Connect’s sponsored search ad server. Build infrastructure, tooling, AI/ML frameworks, and distributed systems; conduct design reviews; drive software lifecycle activities; mentor engineers; influence architecture and technical decisions; and collaborate across teams to translate complex business needs into reliable, data-driven solutions.

Develop and maintain a modern operational reporting portal using Java, Angular, REST APIs, SQL, relational databases, and Microsoft Azure. Responsibilities include building accessible front-end components, backend services, API integrations, database logic migration, automated testing, CI/CD deployment, documentation, and knowledge transfer. The role requires modernizing legacy reporting functionality into scalable enterprise applications while supporting performance, security, maintainability, and Agile delivery practices.

Build innovative software products in the Special Projects Division addressing public health, agriculture, education, and aid-related challenges in Sub-Saharan Africa. Responsibilities include designing software architectures, developing on UNIX-based platforms, participating in code reviews, using disciplined version control, collaborating with teams, and potentially applying Django, React, Android, or PyTorch. The role may involve travel to Africa to understand local contexts.

Designs and scales distributed platform services, APIs, microservices, and React applications for healthcare technology platforms. Owns architecture, reliability, performance, testing, CI/CD, observability, infrastructure, and production support. Partners with product and clinical teams, mentors engineers, leads technical decisions, and uses AI-augmented development tools. Requires extensive software engineering experience with cloud-native systems, databases, REST APIs, frontend frameworks, and scalable SaaS platforms.

Architects and develops scalable Java and Spring Boot web applications, RESTful APIs, and database-backed systems. Leads software delivery, testing, code reviews, automation, troubleshooting, security remediation, telemetry, production incident response, and root-cause resolution. Collaborates with stakeholders and cross-functional teams while modernizing application stacks. The role also supports cloud-native architecture, CI/CD, container orchestration, and AI-augmented development.