Role Description We are looking for someone who combines deep technical expertise with strong teamwork and communication skills. - Planning, implementation, development and testing of HW/SW components for the company backbone and data center networks (Layer 2&3 networks interconnects company datacenters & cloud instances inside company as well as external partner/client networks). - Preparation of technical feasibility studies, design proposals and execution of POCs for the networks. - Communication with 3rd parties/vendors during tendering process (RFI/RFQ) or during definition of requirements on network design. - Integration of new technologies (HW/SW), definition of upgrade strategies for HW/SW and lifecycle plans for the networks. - Preparation of vendor specific configuration templates. - Define the network monitoring metrics and KPIs and track the performance of systems; apply the collected statistics for network dimensioning and capacity planning. - Develop network automation and network monitoring/telemetry products by using tools, methodologies & technologies such as git, CI/CD, pipeline, network abstraction, Network as Code, etc. - Participate on solving and eliminating of ops issues – perform 2nd level support (rotating on-call duty required). - Preparation of the technical documentation through the lifecycle of networks, e.g., design, updates of the code, etc. - Design, Build and 2nd and 3rd line of operations of IP backbone network and data center undelay networks. - Development and Operations of network functions for provisioning and assurance. - Ensuring Infrastructure availability with all its attributes (performance, cost, capacity, reliability). - Coordination among multiple development groups and close collaboration with infrastructure teams, SOC, NatCos and 3rd party providers. Qualifications - Bachelor / Master Degree in Computer Science, Telecommunication Engineering, Information Systems or related field. - More than five years’ experience in area of network platforms design and testing, competence in carrier grade backbone / datacenter network engineering. - Operational experience in networks’ troubleshooting and root cause analysis. - English language - fluent (verbal and written communication skills). - Knowledge of other EU working languages would be an asset. - Excellent customer service, written and oral communication skills, resourcefulness and initiative. - Ability to multitask in a busy and demanding environment. - Strong analytical and conceptual skills. - Ability to handle confidential and highly sensitive information. - Excellent problem solving ability. - Strategic thinking. - Self-motivated. - Highly collaborative. - Flexibility to travel. Requirements - Advanced layer 2 & 3 networks (e.g., IPv6, BGP, ISIS/OSPF, QoS, multicast, V/VXLAN, EVPN, Routing & Switching, MPLS etc.). - Extensive knowledge of carrier grade / data center network hardware, routing, switching, network security and telecommunication circuits from major vendors, in particular Juniper, Cisco or Huawei (e.g., Juniper QFX experience, Cisco Nexus experience). - Experience on Linux networking, container networking and cloud networking. - Knowledge on model driven network programmability. - Linux Administration / container fundamentals. - Cloud fundamentals (e.g., openstack, SDN). - Data Formats (e.g., JSON, YAML, etc.). - Python and APIs (e.g., REST, NETCONF, etc.). - Source Control (e.g., git, GitLab, etc.). - Configuration Management (e.g., Ansible, etc.). - CCNP/CCIE or equivalent certification preferred. - MS office (Excel, PowerPoint, Word, Outlook, Visio, Project). 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.

Role Description At apeirum, we embed senior engineers into growing European companies — no juniors dressed up as seniors, no agency layers, full accountability from day one. We're now looking for a DevSecOps / Infrastructure Engineer who runs self-hosted, security-first infrastructure end to end: from hardening a Linux server to operating multi-node Kubernetes in production, to keeping an ISO 27001 ISMS audit-ready. This is a hands-on role for someone equally comfortable debugging a failing cluster upgrade in the morning and writing the change-management evidence an auditor reads three months later. If you like owning infrastructure rather than just consuming a managed cloud, you'll fit right in. The setup depends on where you're based: a permanent employment contract for candidates based in Spain, or a freelance/contract engagement for candidates based in Portugal. Fully remote within Spain and Portugal, on CET working hours. Tasks - Infrastructure & DevSecOps (core focus): - Administer and harden self-hosted Linux servers - Design, set up and operate self-managed, multi-node Kubernetes clusters (lifecycle, upgrades, networking, storage, ingress, RBAC, high availability) - Manage the Docker / container lifecycle across environments - Build and maintain Infrastructure-as-Code and configuration management (Helm, Kustomize, Ansible) - Own CI/CD pipelines with integrated security scanning (GitLab CI/CD) - Run the monitoring, logging and observability stack (Elastic) - Design and operate encrypted backups: retention, rollover and restore validation - Deliver controlled, repeatable system updates and upgrades - Automate and script infrastructure (Bash) - Lead incident response and keep operational documentation current - Manage DNS and domains - Microsoft 365 administration: - Administer and secure the tenant: Exchange Online, SharePoint Online, Teams - Own identity and access management (Entra ID), MFA and conditional access - ISO/IEC 27001 / ISMS support: - Maintain and improve ISMS documentation and policies - Operate and evidence ISO 27001 controls (access management, logging, change management) - Run risk assessments and track mitigations - Prepare for and support internal and external / surveillance audits Qualifications - 5+ years of hands-on infrastructure / DevSecOps experience in production, self-hosted environments (not purely managed cloud) - Deep, operational Kubernetes knowledge — you've run clusters, not just deployed to them - Strong Linux administration and hardening background - Solid command of IaC and configuration management (Helm, Kustomize, Ansible) and CI/CD (GitLab) - Experience with observability (Elastic or comparable) and robust backup/restore practices - Working knowledge of Microsoft 365 / Entra ID administration and security - Practical familiarity with ISO 27001 / ISMS — controls, evidence and audits, not just theory - A security-first mindset, strong documentation habits, and the discipline to keep changes controlled and repeatable - Fluent English; German is a plus - Based in Spain or Portugal, able to work CET hours Benefits - Remote-first across Spain and Portugal, on CET — real collaboration, not async lag - Senior-only culture — work alongside experienced engineers, no juniors to manage - AI-leveraged engineering — modern AI tooling so one senior does the work of several - Flexible engagement — permanent employment (Spain) or freelance/contract (Spain or Portugal), your call - End-to-end ownership of the stack, with the autonomy that comes with it - Variety across infrastructure, cloud security and compliance work for interesting European clients

Role Description We are looking for a Junior Mid-Level DevOps Engineer with hands-on experience in cloud infrastructure, CI/CD pipelines, and containerized environments. You will design, implement, and maintain scalable and reliable infrastructure, enabling efficient software delivery and high system availability. Responsibilities - Design, build, and maintain CI/CD pipelines for automated build, test, and deployment workflows - Manage cloud infrastructure on AWS (EC2, Amazon Connect, S3, Lambda, VPC, IAM, etc.) - Deploy and manage containerized applications using Docker and Kubernetes - Implement Infrastructure as Code (IaC) using Terraform or CloudFormation - Monitor system performance and reliability using observability tools (Prometheus, Grafana, CloudWatch, etc.) - Automate repetitive tasks and improve operational efficiency - Ensure system security, compliance, and best practices in cloud environments - Collaborate with development teams to streamline release processes and troubleshoot issues - Manage logging, alerting, and incident response processes Qualifications - 2+ years of experience in DevOps, Cloud Engineering, or related roles - 1+ years of hands-on experience with Amazon Connect - Strong experience with AWS cloud services - Proficiency in scripting/programming (Python, Bash, or similar) - Experience with CI/CD tools (Jenkins, GitHub Actions, GitLab CI, etc.) - Hands-on experience with Docker and Kubernetes - Familiarity with Infrastructure as Code tools (Terraform preferred) - Understanding of networking, security, and system architecture - Experience with monitoring and logging tools Requirements - Experience with multi-cloud environments (Azure or GCP) - Knowledge of service mesh (Istio, Linkerd) - Experience with GitOps tools (ArgoCD, Flux) - Familiarity with security best practices (DevSecOps) - Relevant cloud certifications (AWS Certified DevOps Engineer, etc.) Benefits - Culture of Relentless Performance: join an unstoppable technology development team with a 99% project success rate and more than 30% year-over-year revenue growth. - Competitive Pay and Benefits: enjoy a comprehensive compensation and benefits package, including health insurance, language courses, and a relocation program. - Work From Anywhere Culture: make the most of the flexibility that comes with remote work. - Growth Mindset: reap the benefits of a range of professional development opportunities, including certification programs, mentorship and talent investment programs, internal mobility and internship opportunities. - Global Impact: collaborate on impactful projects for top global clients and shape the future of industries. - Welcoming Multicultural Environment: be a part of a dynamic, global team and thrive in an inclusive and supportive work environment with open communication and regular team-building company social events. - Social Sustainability Values: join our sustainable business practices focused on five pillars, including IT education, community empowerment, fair operating practices, environmental sustainability, and gender equality.

• Build CI/CD Pipelines : GitHub Actions or GitLab CI with reusable workflows; Codemagic or Bitrise; Fastlane for iOS/Android signing and store delivery; MSIX packaging and signing for Windows • Own Release Lifecycle : TestFlight, Play Internal/Closed, Microsoft Store/direct MSIX, staged rollouts, mandatory-update paths, crash-driven rollback • Manage Signing Keys & Secrets : App Store Connect, Play Console, EV code-signing certificates for Windows; secret hygiene via 1Password Secrets Automation, GitHub OIDC, or equivalent • Stand Up Production Observability : Sentry/Crashlytics, OpenTelemetry export, custom metrics for offline behavior, log-redaction discipline for sensitive customer data • Build Sideload/MDM Channel : Air-gapped distribution paths for utility and regulated customers including Intune/Workspace ONE workflows • Manage Supply-Chain Hygiene : SBOM generation (CycloneDX), dependency pinning, license scanning, basic Dart/Flutter security review • Run Infrastructure : CI agents, artifact storage, symbolication services on modest Azure or AWS footprint • Carry the Release Pager : Anchor on-call rotation for release and observability incidents, lead postmortems, turn each into pipeline improvement