Top Software Engineer Jobs in Ottawa

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.

Develop and test real-time 5G base station software, automated test cases, simulations, and developer tools. Responsibilities include applying AI and machine learning to signal processing and time-series data, building analytics APIs and pipelines, testing software with 5G lab equipment, generating validation data, troubleshooting test environments, and resolving integration issues while collaborating in Agile teams.

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.

Build and operate ingestion and reconciliation pipelines that match card-network and partner reports against internal transactions. Develop reporting products, produce standardized journals for accounting, support tax and regulatory filing systems, handle sensitive PII for compliance, debug production issues, and collaborate with finance, product, and data teams to automate and scale reconciliation and reporting.

Design, build, test, and maintain enterprise integrations and automations across procurement, finance, and supply chain systems using MuleSoft and Zip iPaaS. Develop Python tools, write and optimize SQL, collaborate with stakeholders, ensure scalability and security, monitor production integrations, and contribute to documentation and DevOps practices.

Build and ship full-stack web and mobile experiences across Affirm’s consumer products. Responsibilities include breaking projects into tasks, collaborating with product, design, and analytics teams, developing scalable APIs, writing tested and extensible code, monitoring service metrics, supporting on-call operations, debugging, conducting code reviews, and participating in team development and interviews.

Build and improve MongoDB’s distributed networking and observability systems. Responsibilities include enhancing networking performance, availability, scalability, resource efficiency, and low-overhead observability; leading medium-sized projects from technical design through delivery; collaborating across the project lifecycle; contributing production C++ code; and participating in code reviews and feature design.

Build and maintain Ruby on Rails backend features for vulnerability management, including security dashboards, reports, and ingestion pipelines. Improve system performance, reliability, and scalability; collaborate across backend, frontend, product, design, and security teams; review code; address technical debt; and participate in on-call rotations. The role requires relational database experience, distributed-team collaboration, technical problem-solving, and contributions across the stack when needed.

Lead the Android platform for Cash App Consumer Platform, building foundational infrastructure, shared libraries, architecture patterns, observability, performance tooling, and developer experiences used across the organization. Drive AI-native engineering practices and tools, identify cross-cutting technical problems, lead architecture reviews, mentor engineers, and collaborate across Android, iOS, web, backend, product, and design teams.

Build and own foundational Android platform infrastructure, shared libraries, frameworks, architecture, observability, performance tooling, and developer experience systems. Lead AI-native engineering practices, evaluate AI development tools, drive cross-organizational technical initiatives, mentor engineers, and establish scalable Android standards. Collaborate across mobile, web, backend, product, design, and leadership teams to improve engineering velocity and customer experiences.

Build and maintain scalable, reliable ML data platform systems to support dataset generation, model training, analytics, monitoring, and large-scale inference. Collaborate with ML, software, and infrastructure engineers to design cost-efficient data lake and training infrastructure using vendor and open-source tools to enable next-generation ML models.

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.

Software Developer Intern supporting Entrust’s Ottawa R&D Discovery team. Responsibilities include developing features in Go and other languages, integrating plugins and APIs, writing automation, contributing to CI/CD, and deploying tested software to Docker, Kubernetes, and cloud environments. The intern will collaborate in an Agile Scrum team, learn secure software development practices, and use AI tools to accelerate development.

Develop and support QNX embedded software products by investigating, debugging, reproducing, and resolving customer issues. Collaborate directly with customer engineering teams and internal QNX experts, write code demonstrating product usage, manage case workloads, and support products including hypervisors, safety software, containers, and middleware. The role requires strong C programming, embedded systems experience, operating-system development knowledge, analytical problem-solving, communication, and customer-service skills.

Modernize and maintain hybrid CI/CD infrastructure across on-premise and cloud environments. Migrate Jenkins and Bitbucket workflows to GitHub Actions, manage Terraform infrastructure, improve artifact processes, administer software lifecycle tools, coordinate application releases, support development teams, automate governance, and ensure audit compliance.

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

Develop and maintain embedded software for autonomous precision aerial delivery and recovery systems. Responsibilities include writing C/C++ code, unit testing, guidance, navigation and control algorithm development, simulation, physical testing, debugging, fault-tolerant design, requirements documentation, safety-critical verification, and cross-functional collaboration. The role also mentors junior engineers and drives continuous improvements to embedded systems and development processes.

Develop and verify Java software components for Canadian Army ISTAR capabilities within an integrated tactical network. Responsibilities include requirements analysis, architecture, implementation, testing, debugging, code reviews, configuration management, defect resolution, and support for customer field trials. The role also coordinates feature development and mentors junior developers while working in an Agile, multidisciplinary team.

Develop and verify Java software components for ISTAR capabilities integrated into tactical networks. Responsibilities include requirements analysis, architecture, implementation, testing, debugging, code reviews, defect resolution, configuration management, and lifecycle maintenance. The role supports sensor integration, verification and validation events, customer field trials, feature planning, and mentorship of junior developers within an Agile team.

Design, implement, and maintain partner integrations and solutions; translate partner requirements into scalable technical implementations; troubleshoot and resolve issues; drive onboarding and steady-state maintenance; collaborate across product, engineering, and partner teams to improve tools and partner experiences.

Build and operate ingestion, reconciliation, and reporting systems that reconcile card-network and partner settlement files against internal transactions. Deliver end-to-end features for traceability, accounting journals, tax and regulatory reporting, and compliance tooling while ensuring reliability, scalability, and data privacy.