Staff Software Engineer

About Lumen Dynamics Lumen Dynamics is the leading provider of AI-powered IT management and cybersecurity software, serving Managed Service Providers (MSPs) and internal IT organizations worldwide. Our comprehensive platform helps organizations efficiently manage, secure, and automate their IT environments, driving operational efficiency and long-term business success. Backed by Insight Partners , a leading global software investor, Lumen Dynamics has experienced sustained double-digit growth and continues to expand its global footprint. Today, Lumen Dynamics supports customers in more than 20 countries and manages over 15 million endpoints worldwide. Founded in 2000, Lumen Dynamics has built a culture centered around innovation, accountability, and results. We are a high-growth, high-performance organization that values individuals who are driven, adaptable, and committed to delivering exceptional outcomes for our customers and teammates alike. At Lumen Dynamics, success comes from embracing challenges, moving with urgency, and continuously raising the bar. Job Title: Senior Software Engineer, Platform Engineering (Backend, Data & AI) Location: Toronto, ON Work Model: Toronto-based; candidates must be local to Toronto or willing to relocate Why Lumen Dynamics? Join a fast-growing company that’s transforming the IT industry. At Lumen Dynamics, you’ll have the opportunity to work with cutting-edge technology, collaborate with a dynamic team, and develop your career in a high impact role. Join the Lumen Dynamics growth rocket ship and see how we are #ChangingLives! Job Summary We’re hiring a Senior Software Engineer to help build the core platform services that support Lumen Dynamics’s next generation of SaaS products. This is a backend platform role focused on distributed systems, event-driven architecture, cloud-native services, and production reliability. You’ll work closely with Platform, Data, AI, and Product Engineering teams to build services that support multiple products, customers, and engineering teams at scale. Roles & Responsibilities Design, build, test, deploy, and operate backend platform services used across multiple SaaS products Build scalable APIs, microservices, event-driven systems, and internal platform capabilities Develop systems that handle retries, idempotency, ordering, backpressure, failure recovery, and replay Improve multi-tenant SaaS capabilities, including tenant isolation, RBAC, auditability, and security Own production systems, including monitoring, alerting, debugging, incident response, and post-incident improvements Partner with Data and AI teams to support reliable data flows, workflow orchestration, RAG systems, and production AI workflows Work with cloud-native infrastructure, including AWS, Azure, or GCP, Kubernetes, Docker, Terraform, and CI/CD pipelines Participate in design reviews, code reviews, technical planning, and mentorship across the engineering team Required Qualifications 6+ years of backend software engineering experience building production systems using Java, Go, Python, Kotlin, C#, TypeScript, or similar technologies Experience designing and operating distributed systems or multi-tenant SaaS platform services Experience building APIs, microservices, and event-driven systems using messaging or streaming technologies such as Kafka, RabbitMQ, SQS/SNS, Pub/Sub, or similar Experience working with cloud platforms such as AWS, Azure, or GCP and containerized deployments using Docker or Kubernetes Experience owning production services, including monitoring, incident response, debugging, and root-cause analysis Preferred Qualifications Experience with multi-tenant SaaS capabilities such as RBAC, authorization, tenant isolation, auditability, or access control Experience with relational or NoSQL databases such as PostgreSQL, MySQL, DynamoDB, Cassandra, MongoDB, Redis, Elasticsearch, ClickHouse, or Snowflake Experience with observability tools such as Datadog, Prometheus, Grafana, OpenTelemetry, Splunk, CloudWatch, or similar Experience with workflow orchestration tools such as Temporal, Airflow, Step Functions, or similar Experience with CQRS, event sourcing, saga patterns, distributed transactions, retries, DLQs, or data consistency trade-offs Experience building data platforms, event ingestion systems, analytics platforms, or internal platforms used by multiple engineering teams Experience supporting production AI, RAG, LLM orchestration, evaluation, guardrails, observability, or reliability workflows Compensation Range The base salary range for this job is CAD $140,000 - $220,000 year. An individual’s base pay depends on various factors including geographical location and review of experience, knowledge, skills, and abilities of the applicant. At Lumen Dynamics, certain roles are eligible for benefits and additional rewards. These rewards are allocated based on individual impact in role. In addition, certain roles also have the opportunity to earn sales incentives based on revenue or utilization, depending on the terms of the plan and the employee’s role. Additional information Lumen Dynamics provides equal employment opportunity to all employees and applicants without regard to race, religion, age, ancestry, gender, sex, sexual orientation, national origin, citizenship status, physical or mental disability, veteran status, marital status, or any other characteristic protected by applicable law.