Wavelo is a SaaS business on a mission to make telecoms a breeze. We provide flexible software that modernizes how communication service providers (CSPs) do business, helping them drive more value, focus on customer experience, and scale their operations faster. As part of Tucows (NASDAQ:TCX, TSX:TC)—one of the world’s largest Internet services companies—Wavelo is backed by outstanding resources and talent. We embrace a people-first philosophy that is rooted in respect, trust, and flexibility. We believe that whatever works for our employees is what works best for us. It’s also why the majority of our roles are remote-first, meaning you can work from anywhere you can connect to the Internet! The work we do genuinely changes lives. If this sounds exciting, we’d love to hear from you! About the Opportunity We are looking for a highly skilled Database Reliability Engineer (DBRE) with deep expertise in PostgreSQL at scale. In this role, you will design, operationalize, and optimize the data persistence layer that powers large-scale, mission-critical systems. You’ll work closely with SRE, Platform, and Engineering teams to ensure performance, reliability, automation, and operational excellence across the database environment. This is a hands-on engineering role focused on building resilient data infrastructure—well beyond traditional database administration. This role is a remote position open to applicants based in Canada. What You’ll Do Architecture, Reliability & Performance - Design, implement, and operate highly available PostgreSQL clusters (physical/logical replication, sharding, partitioning, failover automation) - Optimize query performance and indexing strategies - Perform capacity planning, growth forecasting, and workload modeling - Own high-availability strategies, including: - Automatic failover - Multi-region deployments - Disaster recovery Automation & Tooling - Build and maintain automation for: - Provisioning and configuration - Backups and recovery - Failovers - Vacuum tuning - Schema management - Use tools such as Terraform, Ansible/SaltStack, Bash, Python, etc. - Develop monitoring and alerting systems for PostgreSQL clusters Operations & Incident Response - Lead response during database incidents (e.g., performance regressions, replication lag, deadlocks, bloat, storage failures) - Conduct root-cause analysis and implement long-term fixes Cross-Functional Collaboration - Partner with software engineers to: - Review SQL queries - Optimize schemas - Ensure effective use of PostgreSQL features - Provide guidance on: - Database design patterns - Migrations and version upgrades - Best practices Knowledge, Skills & Abilities - Deep understanding of PostgreSQL internals: - MVCC, WAL processing, vacuum behavior, locking, query planning - Experience designing and operating highly available database clusters with automated failover - Strong performance tuning skills (query optimization, indexing, workload tuning) - Ability to diagnose database and system issues: - Query plans, I/O, memory usage, WAL growth, table/index bloat - Experience with backup and recovery strategies: - Point-in-time recovery (PITR), durability planning - Familiarity with observability and monitoring: - Metrics, alerting, and performance dashboards (Grafana) - Understanding of distributed systems concepts: - Service discovery, consensus (e.g., Consul) - Strong Linux systems knowledge (performance tuning, resource management) - Experience with scripting and infrastructure-as-code automation - Strong troubleshooting and problem-solving skills in production environments - Knowledge of: - Security, compliance, encryption, auditing, access control - Ability to work independently in high-availability, production-critical systems - Familiarity with AI-assisted tools (e.g., Claude, Windsurf, GitHub Copilot) Qualifications Required - 7+ years of hands-on PostgreSQL experience in large-scale, high-volume production environments - Strong expertise in PostgreSQL internals: - WAL, MVCC, vacuum tuning, query planner, indexing, logical replication - Advanced SQL and strong schema design and query optimization skills - Solid experience with Linux systems and networking fundamentals - Experience building automation using Go or Python - Experience with monitoring tools such as: - Prometheus, Grafana, Datadog, PMM, pg_stat_statements Preferred (Nice to Have) - Experience with connection pooling and load balancing: - PgBouncer, HAProxy - Experience with high-availability solutions: - Patroni or similar tools - Exposure to event streaming and CDC: - Kafka, Debezium - Experience supporting 24/7 production environments - Experience with PostgreSQL backup tools: - Barman, pgBackRest, WAL-G - Familiarity with Traefik or similar infrastructure components ​​The base salary range for this position is $126,100 to $140,100. Range shown in $CAD for Canadian residents. Other countries will differ. Range may vary on a number of factors including, but not limited to: location, experience and qualifications. Tucows believes in a total rewards offering that includes fair compensation and generous benefits Want to know more about what we stand for? At Wavelo and Tucows we care about protecting the open Internet, narrowing the digital divide, and supporting fairness and equality. We also know that diversity drives innovation. We are committed to inclusion across race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status or disability status. We celebrate multiple approaches and diverse points of view. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request an accommodation. We use AI-enabled tools throughout our recruitment process to help us work more efficiently and consistently. These tools support our hiring teams by organizing and reviewing information, while final hiring decisions are always made by people. Tucows and its subsidiaries participate in the E-verify program for all US employees. Learn more about Tucows, our businesses, culture and employee benefits on our site here.

• Own end-to-end delivery of a product, including architecture, development, performance, and scalability • Drive execution across multiple concurrent initiatives, ensuring timely and high-quality releases • Collaborate closely with Product Management to define roadmaps, prioritize features, and provide accurate estimates • Build, lead, and scale high-performing engineering teams across onshore and offshore locations • Architect, design, and develop scalable, secure, and high-performance applications using modern Java frameworks • Define and enforce best practices for system design, coding standards, and performance optimization • Lead modernization efforts, including microservices architecture, API-first design, and cloud-native development • Ensure adherence to security standards and best practices (e.g., OWASP) • Proactively identify and reduce technical debt, including upgrading frameworks and third-party libraries

• Own the design and delivery of scalable backend services using .NET and Azure • Architect and evolve event-driven, distributed systems that process high volumes of financial transactions • Build API-first services with strong contracts, reliability, and observability • Lead complex technical initiatives from design through production rollout • Make pragmatic architecture decisions that balance speed, scalability, and long-term maintainability • Partner closely with Product and Design to translate ambiguous problems into elegant technical solutions • Improve performance, reliability, and system resilience as we scale • Raise the engineering bar through thoughtful code reviews, design discussions, and mentorship • Inspire and share your engineering passion across the whole engineering org in our regular Lunch & Learn sessions • Contribute to a culture of experimentation, ownership, and continuous improvement • Work cross-functionally in Plooto, distilling the needs of our strategy into actionable engineering output

• Develop, maintain, and support web-based applications for the Department of Social Services • Design, develop, and implement .NET applications using C#, ASP.NET, ASP.NET MVC, Angular, and PrimeNG • Develop and maintain data-driven applications with MS SQL Server 2016 • Participate in unit testing, integration testing, and deployment of software components • Support legacy system modernization and integrate SC Voucher and CACFP processes into CCSS • Collaborate with technical and non-technical stakeholders to gather requirements and provide solutions • Maintain documentation and follow software development best practices, including Agile methodologies • Ensure application performance, security, and scalability • Troubleshoot, modify, and support existing applications as needed