Top Software Engineer Jobs in Ottawa

Design, implement, and optimize Elasticsearch core storage and query engine components for logs/metrics workloads. Lead architecture, resolve performance bottlenecks, improve storage efficiency and query execution, mentor engineers, collaborate across distributed teams, triage community issues, and write idiomatic modern Java.

Drive architecture and design of Elasticsearch core storage and query engine for logs and metrics. Improve storage efficiency, indexing layouts, serialization, and performance; lead cross-team initiatives; mentor engineers; triage community issues; and write idiomatic modern Java.

Design and build distributed backend systems, microservices, and near-real-time data ingestion and processing. Scale an incrementality experimentation platform, add AI-powered workflows, extend data integrations and partner exports, and contribute frontend components as needed to deliver end-to-end product features.

The Senior Software Engineer will build and maintain the Boreal hosting platform and Moose open-source project, mentor junior team members, and collaborate with product and design teams.

Lead architecture and evolution of Juniper Square’s distributed services, cloud infrastructure, and developer platform. Design scalable, multi-tenant, event-driven systems; build paved-road developer tooling, CI/CD, and observability. Hands-on coding, prototyping, and performance troubleshooting. Enable production AI/LLM workloads, ensure security/compliance, support enterprise upmarket needs, and mentor engineering teams to raise operational excellence and reliability.

Develop and maintain backend services and RESTful APIs for a credit card and payments platform. Work across the full stack with MySQL and third-party integrations, debug production systems, collaborate on feature design, and learn the payments domain while shipping production code.

Lead architecture and development of scalable, secure full‑stack services for card and payments systems using PHP and Python. Design REST APIs and microservices, optimize MySQL performance, drive CI/CD and testing standards, champion security and compliance, influence AI tooling strategy, and mentor mid and junior engineers.

Work directly with clients to scope, prototype, and deploy AI-powered workflows. Build scalable systems using LLMs, embedding and retrieval systems, and backend infrastructure. Translate messy data and operational constraints into production-ready solutions, iterate with stakeholders, and maintain deployed systems (including on-call support).

Design and build scalable full-stack web applications and APIs, drive architecture across frontend and backend, partner with product and design, mentor engineers, improve developer productivity with tooling and AI-assisted workflows, and migrate legacy systems into modern platforms.

Design, build, and operate MaintainX's end-to-end search and retrieval platform, including indexing, ranking, relevance tuning, integrations, and AI-enhanced semantic/vector search. Optimize distributed systems for reliability and performance, iterate quickly with product teams, and participate in business-hours on-call duties.

Lead architecture and core runtime foundations for a distributed scanner platform, driving reliability, observability, performance, and engineering rigor while collaborating with hardware and ML teams and mentoring engineers.

The Solution Test Engineer tests and validates cloud solutions, leads testing strategy creation, mentors engineers, and collaborates with teams to deliver quality solutions.

The Embedded Software Engineer will develop, test, and deliver high-quality designs and code, focusing on embedded Linux software. Responsibilities include creating automated tests, resolving issues during verification, and participating in an agile development process.

Design, implement, and integrate embedded C/C++ software for Linux and RTOS on SoC platforms interfacing with ASIC/FPGA hardware. Own full lifecycle from requirements to delivery, mentor junior engineers, support field deployments, and apply coherent optics and networking protocol expertise to optimize system performance.

Design and build scalable full-stack web applications and APIs, drive architecture across frontend and backend, partner with product and design, mentor engineers, improve developer productivity via tooling and AI-assisted workflows, and migrate legacy systems to modern platforms.

As a Senior Software Engineer, you'll design and build scalable market data systems, improve API architecture, and enhance overall system performance, contributing to Alpaca's infrastructure for trading financial assets.

Lead the development of software solutions for a logistics platform, overseeing technical strategy, mentoring teams, and ensuring high-quality software delivery.

As a Senior Software Engineer, you'll lead the design and development of web applications, mentor peers, and ensure high-quality, secure code using Ruby on Rails, GraphQL, and React.

Develop software and systems for embedded platforms at Aquabyte, focusing on sensor interfaces, network reliability, and hardware diagnostics while collaborating with research teams on machine learning models.

Design, develop, and optimize Acumatica ERP customizations, workflows, integrations, and reporting for financial services. Lead integrations with payment gateways and third-party financial tools, enforce Acumatica best practices, support UI/UX enhancements, and ensure upgrade-safe customizations while collaborating with cross-functional teams.

As a Sr. Software Engineer, you'll design and develop features for a SaaS platform, collaborate with teams, tackle technical problems, and ensure high-quality solutions with an ownership mindset.

Seeking a Senior Software Engineer to design and build a microservices-based SaaS platform, focusing on Java and AWS technologies while ensuring robust deployment and customer satisfaction.

As a Staff Software Engineer at Juniper Square, you'll lead architectural decisions and develop AI-powered systems, mentoring engineers and ensuring high-quality technical standards while collaborating with cross-functional teams.

Design and build scalable, shared platform systems and libraries used across product teams. Partner with product teams to define clean APIs, drive architecture and engineering standards, participate in code reviews and design discussions, document systems, and improve developer experience and platform reliability.

Seeking Data Platform Engineers to design, build, and manage scalable data pipelines and analytic query engines while ensuring data integrity and performance optimization.