Infrastructure Developer

Infrastructure Developer (DevOps / SRE) For the development of a digital B2B product in our headquarters in Essen, we are looking for a DevOps / Site Reliability Engineer. The purpose of the product is to enable our customers to make faster and better decisions by making energy intelligent and simple through our digital products. Having the first two versions of the product released, we are currently working on high value use cases for our customers that require the development and integration of machine learning modules and integration with IoT platforms. How our engineering team works: * We use a modern stack: React and Angular with Typescript in the frontend, Scala in the backend, Influx, PostgreSQL and MongoDB as databases, dockerized deployments on a private Kubernetes Cluster, hosted on Azure; * We work in a fast paced environment: We rely on a LESS / SCRUM based workflow, push to release every 2 weeks, deploy with high automated test coverage, and monitor constantly. * We are an international team and communicate in English only * We believe in face to face communication and require at least 3 days onsite presence each week Must have: * Experience setting up CI + CD for multiple projects with various tools covering build, package, test, deploy, verify, rollback * Understanding of pipeline as-code, both greenfield (from scratch) and improving existing pipelines for CI/ CD * Skills must include: Git, Linux, AWS, Azure, Docker, Kubernetes, JVM (deploy / tune / monitor / manage), Maven, SBT * Can differentiate IaaS vs PaaS vs SaaS from development, performance and operational perspectives (also able to factor in projected costs of infrastructure where relevant to decisions) Should Have: Understanding of: * SSL/ TLS/ Certificates for securing browser communications / inter application communication / user authentication. Experience of: * SRE (Site Reliability Engineering) * HA (High Availability) * Resilience * DR (Disaster Recovery) * Load Testing + Optimisation * Capacity Planning * Scaling at various levels (horizontal vs vertical and levels e.g. containers / services / nodes/ data centres) * Auto Scaling Hands on implementation of: Monitoring * Including log forwarding / processing / extracting / dashboards * Splunk / ELK * Working with developers to ensure they output appropriate logs in consistent format(s) Metrics * And collection / aggregation thereof via e.g. Prometheus Alerting * Based on metrics / log patterns / other criteria * Able to identify what is worthy of an alert and also ensure that no excess alerts are raised * Appreciates the benefits of a managed or self patching OS versus the operational overhead of "traditional" Operating Systems * Can proactively help teams achieve 12 factor apps * A background which ideally includes some SysOps or Linux System Administration in productive environments Nice to have: * Skills ideally include some understanding of modern Java + Scala development, but we are not looking for a developer * Ability to provide concise, technically correct answers/solutions Understanding of * VPN * SSH Jump Nodes * Cloud based virtual network security (e.g. NSG rules) * Proxies (Reverse + Forward, also for injection of credentials and for simplified routing and/or SSL offload) * Can clearly educate others on how best to develop + operate any solution * Acknowledges the important of real security (Note: Likely impossible to verify from a CV unless they have a high calibre qualification such as CEH or CISSP) * Appreciates the advantages of pure / real Scrum versus general agile approaches plus an understanding of Kanban