Top Software Engineer Jobs in Ottawa

Build and maintain core financial backend systems (trading, ledger, billing), transaction processing, reconciliation, and portfolio state management. Design and scale real-time and batch data pipelines, architect APIs and backend services, ensure reliability and observability, and contribute to distributed system design (event-driven, microservices, streaming). Partner with ML teams as needed.

Join the SDK & Extensibility squad to build a TypeScript-first full‑stack platform: SDKs, custom objects, extension marketplace, and an AI-native extension builder. Develop serverless microservices, GraphQL APIs, sandboxed execution, and extensibility primitives; collaborate with product, design, and other squads to deliver safe, discoverable, and multi-tenant extensions.

Build and maintain full-stack features spanning frontend UIs and backend services. Design, develop, test, deploy, and support code; participate in architecture discussions, code reviews, and collaborate with Product and QA. Use AI-assisted coding tools, identify technical debt, and contribute to scalable, reliable solutions.

Join a talent network connecting founding backend engineers with VC-backed startups. Responsibilities include designing and maintaining scalable backend systems, building high-performance APIs and microservices, optimizing databases and data pipelines, defining technical strategy with founders, and establishing best practices for security, DevOps, and cost-efficient cloud infrastructure.

Join a talent network connecting founding front-end engineers with VC-backed startups. Responsibilities include designing and building scalable, high-performance web UIs, optimizing performance and accessibility, creating reusable component libraries, integrating APIs and client-side logic, and defining front-end best practices and testing strategies while collaborating with designers, backend engineers, and founders.

Join a talent network connecting Staff Full Stack Engineers to VC-backed startups. Build and scale full-stack web applications, design APIs and microservices, optimize for performance, scalability and security, collaborate with product and design, and establish best practices for code quality, testing, and CI/CD across cloud-based architectures.

Join a talent network connecting staff front-end engineers with VC-backed startups. Responsibilities include designing and building scalable, high-performance front-end applications, defining front-end architecture and component libraries, improving performance and accessibility, integrating with APIs, establishing testing and CI/CD best practices, and mentoring junior engineers.

Join a talent network connecting founding full stack engineers with VC-backed startups. Responsibilities include designing and building front-end and back-end systems, developing APIs and cloud architectures, collaborating with founders on technical strategy, contributing to technical roadmaps, writing clean code, and establishing engineering best practices.

Join SignalFire's talent network to be considered for Staff Backend Engineer roles at early-stage startups. Responsibilities include designing, building, and maintaining high-performance backend services, APIs, and microservices; optimizing databases, caching, and event-driven systems; ensuring security, fault-tolerance, and cost efficiency; and establishing best practices for DevOps, CI/CD, and monitoring.

Lead technical strategy and roadmap for Affirm's Online Storage platform. Design and build scalable, multi-region datastore solutions, automation control planes, and operational tooling for hundreds of databases. Drive cross-team collaboration, reliability, monitoring, and mentor engineers while delivering high-impact backend and database features.

Design, build, and maintain cross-platform mobile apps using React Native and JavaScript. Implement reusable components, integrate RESTful APIs and WebSockets, write unit and integration tests, debug and optimize performance, and collaborate with product, design, and backend teams using Git.

Design and build cross-platform mobile applications using React Native and JavaScript. Implement reusable components, integrate RESTful APIs and WebSockets, write unit and integration tests, debug issues, and collaborate with product, design, and backend teams using Git.

Build intuitive interfaces for construction workflows using React and TypeScript, optimizing performance and creating data-rich dashboards.

The Intermediate Software Engineer will develop educational technology products, collaborating with teams and maintaining high-quality standards through the software development lifecycle.

The Software Engineer will design and implement systems across the stack, focusing on AI-native engineering principles, distributed systems, and high-performance data processing.

Develop and maintain enterprise software applications, focusing on back-end development, API development, and ensuring application security while contributing to software improvement processes.

Design and implement low-level embedded software for x86/ARM platforms in C/C++; collaborate with hardware and software teams to spec, test, and debug vehicle subsystems and sensors (camera, radar, lidar, IMU); work on network devices and time synchronization; perform hands-on hardware bring-up and on-vehicle debugging of buses like I2C, CAN, SPI, UART; ensure reliability and safety for autonomous trucking systems.

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.

As a Staff Software Engineer, you'll lead a team in developing and delivering scalable software solutions for employee management in the restaurant industry, focusing on enhancing customer and employee experiences.

Lead the technical design and delivery of banking features at Cash App, collaborating across teams, driving architecture improvements, and mentoring engineers.

As a Senior Software Engineer, you will lead backend development, design scalable services, and mentor team members while focusing on AI-driven product enhancements.

Design, implement, and maintain VirtIO virtual devices and low-latency drivers; collaborate with hardware vendors and Android AOSP teams; provide customer integration support and custom middleware solutions; optimize real-time performance across kernel and user space; contribute to functional safety lifecycle (ISO 26262) and product roadmap.

Build and maintain a custom WordPress block theme and design system, shipping pages and reusable components from Figma. Develop custom Gutenberg blocks, plugins, APIs, content importers, experimentation, analytics pipelines, and QA automation. Optimize for performance and SEO, implement tracking and A/B tests, and collaborate closely with Design, Marketing, SEO, and Growth.

Responsible for building decision-making frameworks for multi-aircraft wildfire suppression, developing algorithms, and ensuring real-time software performance. Collaborates with engineers and firefighters for system validation.

The Senior Software Engineer will develop mission simulation infrastructure, integrating various systems and ensuring safety-critical features for autonomous firefighting operations.