Senior DevOps & Infrastructure Security Engineer – Payments and Microservices

Unleash the Power of Scale & Innovation --- Shape the Future of Payments TechnologiesKrakow-based opportunity with hybrid work model (up to 3 remote days per week).As a Senior DevOps & Infrastructure Security Engineer -- Payments and Microservices, you will be working for a leading international IT company specializing in high-speed, high-reliability payment solutions. You will play a critical role in supporting complex, regulated payment infrastructures, driving service stability, security, and operational excellence across a variety of cutting-edge technologies. Join us to push the boundaries of fintech innovation and elevate your career to new heights.Your main responsibilities:Own the reliability, change delivery, and continuous improvement of a complex payments technology environment, encompassing IBM WebSphere, IBM MQ, Oracle, SFTP, APIs, and Kubernetes-based microservices.Build, support, and optimize CI/CD pipelines and orchestration solutions to ensure robust, automated deployment processes.Manage incident resolution end-to-end, coordinating cross-functional teams, updating stakeholders, and conducting root-cause analyses for swift recovery.Develop and maintain detailed support documentation, runbooks, and ensure on-call readiness for critical services.Support IBM MQ and WebSphere applications, including security configurations (TLS), performance tuning, and troubleshooting connectivity or message flow issues.Collaborate with DBA teams to optimize database performance, manage high availability and disaster recovery configurations.Lead secure SFTP integrations, managing keys, certificates, automation, and operational controls.Operate and automate microservices on Kubernetes, covering deployment, scaling, secrets management, ingress, and observability.Improve CI/CD and release practices, standardizing operational health checks, SLIs, logging, metrics, and tracing.Automate routine tasks via scripting or Infrastructure as Code, enhancing operational efficiency.Support operational maturity initiatives through high-quality documentation, adherence to standards, and SRE practices.Coordinate changes across teams, balancing delivery speed with stability and regulatory compliance.Communicate effectively with technical and non-technical stakeholders regarding project status, risks, and dependencies.Contribute to ITSO activities, ensuring service health, operational readiness, and sustainability.Contribute to risk and control management, maintaining compliance and supporting risk assessments.Mentor colleagues and promote best engineering and operational practices.You're ideal for this role if you have:At least 5 years of hands-on DevOps and Platform Engineering experience in high-availability environments, preferably within financial services or payments.Proven expertise with Kubernetes (deployment, scaling, configuration, troubleshooting).Strong operational knowledge of Oracle databases, including connectivity, performance, and HA/DR strategies.Extensive experience supporting IBM MQ and IBM WebSphere Application Server in production settings.Proficiency in SQL and Linux system administration.Skilled in CI/CD automation tools and scripting (Git, Bash, Python), with experience in Infrastructure as Code.Deep knowledge of SFTP integrations, including security and automation.Solid capabilities in observability (logs, metrics, traces), performance tuning, and capacity management.Familiarity with Agile and DevOps tools such as Jira, Confluence, and SharePoint.High level of autonomy, organization, and ability to prioritize effectively.It is a strong plus if you have:Experience in payments, particularly SEPA.Knowledge of API gateways, service meshes, container security, vulnerability management.Familiarity with ITIL processes and operational governance.Experience with resilience engineering, chaos testing, and disaster recovery testing.Skills in Java, Puppet/Ansible, or similar configuration management tools.Language Required for the role:Fluent English (verbal and written).Eligibility to work in Europe:Only candidates with an existing legal right to work in the European Union will be considered for this role.#MAKEYourCareerBETTERInterested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.