Twilio is hiring a Staff Engineer, Security Engineering Partners to bridge security and engineering teams by designing and implementing scalable security solutions, leading security reviews, driving risk reduction, and mentoring engineers. Required: 8+ years in security engineering (application/cloud/product security), threat modeling, experience using LLMs in security solutions, strong software development skills (Python required; Go/Java a plus), CI/CD and IaC familiarity, and working knowledge of containers and AWS. Role is remote for candidates based in Canada (Ontario, British Columbia or Alberta) and may require occasional travel.

Join GitHub's Code Scanning team to design, develop, and operate static-analysis-based Code Scanning and Code Quality products. Responsibilities include API and system design, CI/CD, reliability and on-call rotations, performance and telemetry work, mentoring, and cross-functional collaboration. The role references experience with languages such as C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python; documented qualification options list experience requirements that vary by degree (minimum explicitly listed: 3+ years).

Work on GitLab's Authentication team to design and implement authentication and identity services (token issuance/validation, SSO, provisioning) across the Rails monolith and GATE. Projects include passkeys/passwordless, composite identities, service accounts, OAuth/OIDC/SAML/LDAP/SCIM enhancements, and migration of authentication paths into GATE. Requires experience with Go and/or Ruby, authentication/authorization technologies, token systems, cryptographic signing, and delivering services to production in a remote environment.

Responsible for maturing, maintaining, and building features for Mozilla's Internal Developer Infrastructure Platform, including CI/CD, observability, Kubernetes optimization, environment bootstrapping, and cost optimization. Requires 5+ years software engineering experience, technical leadership, proficiency in Python/JavaScript/Go, and strong experience with cloud-native technologies (GCP preferred, AWS acceptable) and tools such as ArgoCD, Grafana, Terraform, Helm, Backstage.

Work on a remote-first team responsible for scaling Hopper's global hotels and cars ecosystem. Responsibilities include end-to-end technical integrations with external partners, writing clean performant code in Scala or other JVM languages, troubleshooting production incidents in distributed systems, owning feature development from implementation to deployment, and improving system scalability, performance and monitoring. Technologies and topics mentioned include Scala/JVM, microservices, gRPC, Pub/Sub, REST, GDS integrations, low-latency/high-throughput services, and production debugging.

Senior Staff Engineer to lead the AMP initiative at MongoDB: set technical direction across AMP pillars, design and implement orchestration and multi-agent systems for application modernization, ensure security-first deployment, collaborate with product teams for integration with MongoDB, and mentor engineers. Role expects 10+ years of development and operations experience, deep data processing/warehouse experience, GenAI expertise, and experience leading engineering teams. Based on North America's West Coast (PST) with a hybrid model; Canada salary range listed.

Remote-first Senior Software Engineer (Growth) responsible for designing, implementing, and analyzing growth experiments and behavior-based user experiences across Docker Desktop, Hub, and related products. Requires 6+ years experience, strong frontend (React/JS/TS) and backend (Go/Python) skills, familiarity with A/B testing/feature-flag systems, data warehouse tooling (Snowflake/Redshift), and working with analytics/experimentation platforms.

Work on GitLab's Agent Tools within AI Engineering to design, implement, and maintain backend features in the GitLab monolith using Ruby on Rails. Responsibilities include designing/rest APIs (GraphQL/REST), improving automated testing (RSpec), addressing performance and observability, participating in Tier 2 on-call, and collaborating with product, frontend, and AI teams. Required skills include Ruby on Rails, SQL/PostgreSQL, API design, and experience integrating AI-backed features; familiarity with Python and Vue is a plus.

Hopper is hiring a Staff Software Engineer for its HTS Commerce team. The role focuses on backend work (Scala, GCP) while using AI tooling (LLMs, agents) to orchestrate feedback loops and ship end-to-end features. Responsibilities include improving the codebase for humans and AI agents, architecting scalable solutions, owning partner-facing features, and collaborating with PMs and senior engineers in a low-process environment. Location is listed as Montréal / Québec (remote).

Hopper is hiring a Staff Backend Software Engineer to work on its HTS platform (backend in Scala, running on GCP) from Vancouver or Toronto (remote). The role focuses on end-to-end backend feature ownership, architecting scalable solutions for partner integrations, and using AI/LLM tooling and agent orchestration to accelerate development while designing guardrails and feedback loops for reliable AI-assisted workflows.

Lead development and architecture of a cross-platform, high-performance endpoint AI framework for the Falcon sensor, working with data scientists, security researchers, and endpoint engineering. Responsibilities include designing model interfaces, optimizing resource utilization for low agent overhead, defining testing approaches (efficacy, regression, performance), and leveraging hardware acceleration (NPU/GPU). Role is hybrid based in Toronto, Canada; Canadian-based employment with a listed base salary range of CAD 175,000–250,000 per year.

1Password is hiring a Principal Engineer to define architecture and engineering standards across Product Engineering, focusing on scalable, secure, reliable, and maintainable product systems. The role involves driving long-term technical strategy, integrating AI safely into customer experiences, improving operational resilience and observability, and mentoring engineers across the organization. This is a remote role open to candidates in the United States and Canada.

Work on design, build, and operation of core platform services and APIs for training, deploying, and serving ML workloads at scale. Responsible for reliability, scalability, Kubernetes/GKE workloads, Terraform provisioning, observability, on-call incident response, and collaboration with product, infrastructure, security, and data teams.

Intellistack is hiring a Software Engineer to build and maintain identity/authentication, policy/access control, integrations, notifications, and AI services. Responsibilities include designing RESTful APIs and microservices, developing backend services in Java and Python, supporting OAuth 2.0/OpenID Connect/SSO/SCIM, building event-driven services with Kafka, and deploying/monitoring applications in Kubernetes. Requires 3+ years backend engineering experience and familiarity with cloud platforms, CI/CD, testing, and observability.

Quora seeks a Senior Infrastructure Security Software Engineer to join a new Security Engineering Team, working remotely from the US or Canada. The role focuses on securing large-scale cloud environments (especially AWS), building infrastructure-as-code pipelines (Terraform/CloudFormation), integrating security into CI/CD (SAST/DAST/dependency scanning), hardening OS/container environments (eBPF, OSQuery, SECCOMP), threat modeling, and participating in incident response. US- and Canada-specific salary ranges are provided in the posting.

Grafana Labs is hiring a Staff AI Engineer (remote, applicants in Canada only) to develop, prototype, and ship AI- and LLM-powered observability features and agentic workflows. The role emphasizes production software delivery, experimentation, collaboration with cross-functional teams, and experience with cloud-native environments, observability tools, and LLM/GenAI technologies.

Procurify is hiring a Full Stack Engineer II to contribute across backend and frontend systems, implementing RESTful APIs and user-facing React components. The role emphasizes Python/Django, TypeScript/React, scalable backend design, database schema optimization, CI/CD, and collaboration with product and design. Remote work is supported within Canada; the position expects 3+ years of full stack experience.

Work on Firefox's security architecture and cryptography stack (cryptographic protocols, WebPKI, security-sensitive web APIs); design and implement web platform security features; improve browser reliability, performance, and memory efficiency in a multi-threaded, cross-platform codebase. Requires strong software engineering skills with proficiency in C/C++, familiarity or interest in Rust, debugging, and security fundamentals.

Procurify is hiring a Senior Frontend Software Engineer to design, develop, and maintain responsive TypeScript/React frontend components, champion code quality, and provide technical leadership. The role requires 5+ years of frontend experience and familiarity with the listed stack (Python/Django backend, AWS, Kubernetes, Terraform, CircleCI). The position is remote-first within Canada and includes a stated annual salary range in CAD.

Senior engineering role owning the technical evolution of Acquia DAM's AI capabilities: architect and implement stateful, multi-agent (agentic) workflows, lead AI observability and prompt/version management, integrate DAM with Acquia's AI ecosystem, and mentor engineers. Requires 8+ years software engineering experience and 3+ years production experience with AI agents plus hands-on experience with LangGraph, Temporal, Pydantic, LangFuse, and cloud AI deployment.