Role Description We are hiring a Senior Database Reliability Engineer to join the Infrastructure DBA cell. This is a hands-on production ownership role, not a narrow ticket-processing DBA position. You will keep critical database services reliable, automate repeated work, support engineering teams, and reduce single-person dependency in our PostgreSQL, ClickHouse, MongoDB, and Redis operations. PostgreSQL is the main requirement. ClickHouse experience is a strong plus, but it is not a day-one blocker. We need a senior engineer with enough database, Linux, automation, and incident-response depth to learn our ClickHouse environment quickly and operate it safely. Your Responsibilities - Own production PostgreSQL reliability: HA design, Patroni, PgBouncer, replication, failover, upgrades, vacuum/bloat control, query tuning, locks, indexes, capacity, backups, PITR, and restore validation. - Improve disaster recovery and operational evidence: tested restores, documented recovery paths, measurable RTO/RPO targets, runbooks, and safe maintenance plans. - Support the wider database estate: ClickHouse, MongoDB, and Redis. Troubleshoot incidents, review access and data-safety changes, improve monitoring, and learn the production ClickHouse patterns already in use. - Automate DBA workflows with Ansible, Terraform/OpenTofu, GitLab CI/CD, scripts, and reproducible runbooks for provisioning, grants, backups, restores, health checks, and ownership metadata. - Help build DBaaS-style self-service capabilities for engineering teams to request databases, access, credentials, and operational checks with less manual DBA intervention. - Improve observability and incident response through Grafana, metrics, logs, SLOs, alert rules, Opsgenie routing, and clear communication during production issues. What Success Looks Like - PostgreSQL clusters have tested backup and restore paths, useful dashboards, clear ownership, and documented failover procedures. - Repeated DBA tickets become automation or self-service workflows. - ClickHouse operational knowledge is no longer a single-person dependency. - Database incidents have owners, runbooks, evidence, and measurable recovery paths. - Product and engineering teams get database help faster without sacrificing safety, auditability, or reliability. What We Expect From You - Deep hands-on PostgreSQL experience in business-critical production environments, typically 5+ years or equivalent depth. - Strong understanding of PostgreSQL internals and operations: MVCC, WAL, transactions, locks, indexes, query planning, replication, autovacuum, bloat, major upgrades, backups, PITR, and restore testing. - Proven experience with highly available databases and the ability to reason about quorum, split-brain risk, failover, rollback, and recovery. - Strong Linux and infrastructure fundamentals: systemd, networking, storage, filesystems, CPU/memory/disk bottlenecks, TLS, DNS, firewalls, and root-cause troubleshooting. - Automation skills with Ansible and scripting. Terraform/OpenTofu, GitLab CI/CD, and merge-request based delivery are strong advantages. - Ability to support more than one database engine. Ready to learn ClickHouse quickly and take responsibility for it. - Practical use of AI engineering assistants such as Claude and Codex to improve speed and quality, while personally verifying generated SQL, commands, scripts, and operational conclusions. - English - upper-intermediate or higher - to ensure clear communication of progress within the teams. Nice to Have - ClickHouse operations: replication, Keeper/ZooKeeper, MergeTree engines, distributed DDL, grants, row policies, backups, query troubleshooting, and cluster recovery. - MongoDB replica sets and Percona Backup for MongoDB. - Redis/Sentinel and broker/cache failure modes. - Database observability, SLOs, golden signals, alert tuning, and executable incident runbooks. - Building internal platforms, self-service portals, or DBaaS workflows for engineering teams. Benefits - A focus on professional development. - Interesting and challenging projects. - Fully remote work with flexible working hours, allowing you to schedule your day and work from any location worldwide. - Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves. - Compensation for private medical insurance. - Co-working and gym/sports reimbursement. - Budget for education. - The opportunity to receive a reward for the most innovative idea that the company can patent.

Role Description Nous sommes à la recherche de deux stagiaires pour une période de 4 mois (2 septembre au 19 décembre 2025) pour effectuer des stages rémunérés dans le département de recherche et de développement. Notre département de Recherche et Développement est présentement au cœur d'une migration vers le cloud et est à la recherche de stagiaires en développement logiciel, talentueux, motivé et créatif pour mettre l'épaule à la roue. Dans cette position, tu auras le plaisir de participer à des projets stimulants ayant des impacts tangibles dans le secteur de la santé: nos systèmes de logistique sont utilisés de l'entrepôt jusque dans la salle d'opération. Tu feras partie d’une équipe Scrum qui met l’accent sur l’amélioration continue des pratiques et du travail d’équipe. Tu développeras dans un écosystème AWS dans lequel nous optimisons le potentiel des nouvelles architectures cloud. Enfin tu auras l'opportunité d'apprendre au près d'architectes et de développeurs d'expérience pour lesquels s'amuser en travaillant n'est pas une option. Vous serez responsable de ce qui suit : - Améliorer les différents outils de déploiement et d’intégration à l’aide de conteneurs (docker) - Participer à la conception et la maintenance de pipelines CI/CD - Employer les techniques de développement piloté par les tests (TDD) - Élaborer des stratégies d’automatisations de tests - Effectuer des revues de code sur le travail de tes pairs - Participer aux rencontres scrum de l'équipe: planification, analyse et rétrospectives - Collaborer avec l'équipe à l'amélioration des techniques et processus d'intégration continue Qualifications - La volonté de travailler dans une équipe DevOps - Bonne connaissance de langage de « scripting » - Connaissance de la méthodologie Scrum/Agile - Doit être une personne logique, organisée, avec de bonnes aptitudes interpersonnelles et doit être capable de bien travailler sous pression - Doit posséder d’excellentes aptitudes de communication (écrite et parlée) - Faisant des études universitaires en science informatique ou en génie informatique - Excellentes compétences en communication verbale et écrite en anglais, nécessaires pour communiquer efficacement avec nos clients, fournisseurs, partenaires d'affaires et collègues en dehors de la province du Québec - La connaissance des technologies suivantes sera un atout - SQL, JDBC - Vscode - Langage de programmation Java - Outils de builds et déploiement (Maven, Docker, Jenkins, Gitlab CI) - Amazon Web Services (ECS, EC2, RDS, etc.) Company Description Tecsys est un innovateur à croissance rapide qui offre des solutions de chaîne d'approvisionnement aux principaux systèmes de soins de santé, aux hôpitaux, aux pharmacies, aux distributeurs, aux détaillants et aux 3PL. Nous travaillons avec les leaders du secteur pour transformer leurs chaînes d'approvisionnement grâce à la technologie. Chez Tecsys, nous nous engageons à favoriser un milieu de travail diversifié et inclusif où tous les employés se sentent valorisés, respectés et autonomes. Nous croyons que la diversité stimule l'innovation et renforce notre capacité à offrir des solutions exceptionnelles. Nous accueillons et encourageons les candidatures de personnes de tous horizons, expériences et perspectives à rejoindre notre équipe. Tecsys est un employeur offrant l'égalité des chances. Des accommodements sont disponibles pour les candidats sélectionnés pour une entrevue. L’usage du masculin dans ce document a pour unique but d’alléger le texte. NB: Si vous postulez, vous devez être citoyen canadien ou résident permanent du Canada, OU avoir un permis de travail canadien valide.

Role Description We are looking for a DevOps / Senior Cloud Infrastructure Engineer to join us on a freelance basis to build the observability and incident management backbone for autonomous kitchen operations. - Timeline: 4-5 month project - FTE: full time - Location: remote Qualifications - Senior-level experience as an AWS Cloud Engineer or Site Reliability Engineer. - Strong, demonstrable focus on metric-driven observability, monitoring, and alerting at scale. - Fluent, hands-on experience in Python for tooling and automation. - Hands-on experience with Terraform for Infrastructure as Code. - A proven track record of designing, architecting, and owning production systems end-to-end. - Ability to work completely independently without a detailed spec sheet or heavy direction. - Experience with Jira Service Management or similar ITSM/incident platforms is a plus. - Experience with Grafana dashboarding pipelines at scale is a plus. - Exposure to AI-assisted ops tooling (AI-Ops, runbook automation) is a plus. - Prior experience in a fast-moving hardware, robotics, or IoT fleet environment is a plus. Requirements - Standardize and own the Tech Ops Incident Management Platform using Jira Service Management across our production fleets. - Automate incident resolution workflows with AI tooling, including runbook generation and assignment. - Design and implement proper documentation for all Tech Ops incident processes to ensure a clean handover. - Build out fleet management and task automation to support global 24/7 remote operations. - Own and customize the data-driven observability layer via Grafana across all internal tech teams. - Work closely with key leadership stakeholders (Head of Infrastructure & Cloud, VP Engineering) to independently drive architecture decisions. Company Description

Role Description - Organize and perform the technical onboarding of TelCo and OSS (Operations support systems) applications onto Kubernetes-based platforms. - Contribute to Automation of operational tasks and creation of enhancements that will improve the performance, scalability, and reliability of the platform and services. - Analyze logs and metrics to identify root causes of issues, resolve bugs, and improve system reliability and maintainability. - Respond to incidents, perform root cause analysis, and implement preventive measures to minimize downtime and service disruption. - Oversee change management processes and system lifecycle activities, ensuring smooth transitions, version control, and minimal disruption during upgrades or deprecations. - Participate in on-call rotation (for stand-by operations). Qualifications - University degree in Computer Science, Telecommunication Engineering, Information Systems, or comparable qualifications. - Fluent in English. - 2+ years of proven experience in cloud technologies. - Experience onboarding complex applications into Kubernetes environments. - Strong Linux system administrator skills and TCP/IP network fundamentals (DNS, IP routing, load balancing). - Strong grasp of Kubernetes and containerization concepts and best practices (deployments, services, ingress, volumes, etc.). - Hands-on experience with GitOps tools and CI/CD workflows. - Proficiency in scripting and automation (Python, Bash, Ansible). - Experience in PostgreSQL, Cassandra, Redis, Kafka, and monitoring tools (Kibana, Grafana, Prometheus). Requirements - Background in TelCo OSS/BSS systems and network orchestration. - Exposure to OpenStack or other private cloud technologies. - Experience with Infrastructure as Code and templating (Terraform, Helm). - Understanding cloud-native security and compliance practices. - Prior experience with onboarding frameworks and E2E system integration. Benefits - Flexible & remote work. - Very competitive annual bonus scheme. - Meal vouchers. - Private insurance. - Cool office spaces in Thessaloniki and Athens. - A new team that will support and challenge you on your path to growth. - Extra days off. - Opportunities to travel and work all around the world. - … and many more.