The project Our client is an international supplier of communication and information systems for control centers with safety-critical tasks. They specialize in developing and distributing 'Control Centre Solutions' for the Air Traffic Management and Public Safety & Transport sectors. As a Software Developer, you will join a dedicated team of professionals to actively contribute to the development of the next-generation platform for safety-critical domains. This platform is designed to address the highest quality needs in air traffic management, providing reliability, real-time performance, and security as critical success factors. The digital platform facilitates seamless integration of voice and data applications, breaks down operational silos, and prioritizes cyber security throughout the solution lifecycle. By streamlining control center tasks and enabling integrated controller operations on a single screen, the platform empowers organizations to enhance service levels without increasing headcount. Project methodology: SCRUM (SAFe) Location: Poland Technologies used in the project: - Java 17/21, Golang, Python - RedHat 8/10 - Docker - RabbitMQ - Postgresql, CQL (Cassandra) - React, WebSockets - Jenkins, Ansible You will work on a microservices-based framework used across the company to run and integrate multiple products. You will develop reusable services, software packages, and libraries to be used by other teams in the company. The product runs on RedHat, handles the deployment and configuration of the OS and supports the configuration and orchestration of services packaged as Docker images. We are developing for a safety-critical environment, following industry standards, where high availability and redundancy is a basic requirement. You will develop loosely coupled, highly available Java services, with lightweight REST and AMQP, (RabbitMQ) interfaces, that use CQL (Cassandra) to store data. If you like to step out of your comfort zone, we also have components written in Go if you want to learn a new language. Your tasks: - Take part in the daily work of the Scrum Team - Contribute to the design and architecture of the product - Write code according to the company processes and standards - Write unit and component tests - Support for the QA in testing and developing the automated system tests - Writing documentation and requirements - Clean Code / Code Review What we expect from you: - 7+ years of software development experience in Java - Knowledge of object-oriented concepts, design patterns and SOLID principles - Passionate about clean, unit tested and maintainable code - Experience with microservice architecture - Experience with SOA and microservices - Experience with REST, messaging/AMQP, WebSockets - Experience with distributed systems and understanding of concepts (CAP theorem, redundancy, high availability, consensus protocols, etc.) - Know-how on continuous integration and delivery - Good English skills (both written and spoken) Nice to have: - Experience with Go/Python is a plus - Knowledge of Linux and Bash - IP networking know-how - Domain Driven Design experience is a plus - Experience in configuring CI/CD pipelines is a plus - Experience with Github Copilot What we can offer: - flexible working hours - medical insurance - international clients - remote work - annual bonuses - life insurance - non-corporate work atmosphere - integration events - additional days off - training and development budget We look forward to receiving your application! Recruiter responsible for the offer Agata Gradzińska agata.gradzinska@trimetis.com

• Manage large-scale, distributed systems, focusing on minimizing downtime and improving system resilience. • Maintain customer trust and confidence by ensuring stability and functionality of services. • Drive continuous enhancement of processes, tools, and methodologies to support the evolving needs of the service. • Lead the development of code and automation scripts to optimize the scalability, reliability, and performance of services. • Lead and participate in high-priority customer escalations, adopting a customer-first mindset. • Coordinate and execute complex incident response procedures, ensuring timely resolution and thorough postmortems. • Collaborate with cross-functional teams to enhance system robustness. • Document resolutions, root causes, and best practices to enrich the knowledge base and promote self-service solutions. • Mentor and coach team members, fostering a culture of continuous learning, knowledge sharing and collaboration. • Participate in on-call rotation and provide leadership during critical incidents.

• Manage and maintain Azure cloud infrastructure and related platform services. • Implement and manage infrastructure as code using Terraform. • Operate and support Azure Kubernetes Service (AKS) environments. • Create and maintain Kubernetes YAML configurations and manage deployments using Helm or Kustomize. • Troubleshoot Kubernetes environments using tools such as kubectl. • Support CI/CD pipelines using Azure DevOps with YAML pipelines. • Develop and maintain automation scripts, primarily in PowerShell or Bash. • Collaborate with development teams to support application integrations and platform operations. • Manage and support Azure services, including App Services and databases. • Monitor, troubleshoot, and resolve infrastructure and platform issues. • Work within Agile teams using tools such as JIRA and Git.

Overview Expleo is a trusted partner for your innovation journey. As a global engineering, technology and consulting service provider, we are ideally positioned to help you achieve your ambitions and future-proof your business. With a smart blend of bold thinking and reliable execution, we’re able to fast-track innovation through each step of your value chain. We are strategically positioned to build value, with a global footprint across 30 countries.We are as global and local as you need us to be, with strong best-in-class pan-European technological centres and unique best-shoring capabilities. We leverage a network of high value-adding affiliates in consulting and industrial excellence, and leading partners across multiple sectors to provide you with the most comprehensive services and solutions in an ever-changing environment. Responsibilities - Design, implement, and maintain Kubernetes-based platforms and DevOps infrastructure. - Support and operate secure DevSecOps environments and CI/CD pipelines. - Deploy and manage containerized workloads and platform components. - Implement infrastructure as code and GitOps practices for platform provisioning and configuration. - Configure and maintain observability solutions to monitor platform performance and reliability. - Ensure platform and infrastructure security through container security tools, secrets management, and network policies. - Manage supporting platform services such as storage, databases, and ML platform components. - Collaborate with cross-functional engineering teams to support platform and application delivery. - Produce and maintain technical documentation and communicate effectively with internal teams and customers. - Identify issues, troubleshoot platform problems, and proactively improve reliability and security. Essential skills - 7+ years of experience in DevOps or Platform Engineering. - 2+ years of experience in DevSecOps. - Strong expertise in Kubernetes (AKS, upstream, or enterprise Kubernetes). - Experience with on-premises Kubernetes (RKE2, K3s, or OpenShift). - Experience with GPU-accelerated workloads using NVIDIA operators, GPU device plugins, or Run:AI. - Experience with CI/CD tools such as Azure DevOps or GitHub Actions. - Infrastructure as Code experience using Terraform, Helm, Kustomize, YAML, and GitOps practices. - Experience with observability tools such as Prometheus and Grafana. - Expertise in container security tools (e.g., CNI, Trivy, Aqua, Prisma or similar). - Experience with secrets management tools (e.g., Vault or Azure Key Vault). - Strong Linux and networking knowledge (TLS, DNS, Ingress, OAuth/OIDC, VNet, Peering, VPN/Jump Host configuration). - Experience managing MinIO, MLflow, and PostgreSQL (HA and backups). - Strong scripting skills (Python or Bash; Go is optional). - Expertise in Keycloak configuration. - Experience with Kubernetes security practices (CIS hardened Kubernetes, RBAC, NetworkPolicies, PodSecurityAdmission). - Knowledge of Zero Trust networking principles. - Experience with SAST, DAST, and SCA security tooling. - Knowledge of encryption at rest and in transit, certificate management, and firewall configuration. - Fluency in English. Desired skills - Experience supporting ML platforms (Kubeflow, MLflow, KServe). - Knowledge of storage systems such as Ceph or NetApp. - Experience working in regulated industries (automotive, aerospace, medical, energy, railway). What do I need before I apply -The opportunity is remote but the candidate must already be living in PT.