Elastic Stack Experts in Hamburg

Enrique G.

Data Security

Last position:

Security Architect at Capgemini

I implemented a Zero-Trust architecture for robust, military-grade maritime container mini data centers based on VMware & Tanzu to support containerized GIS workloads for ground forces. The main focus was on securing communications, workload protection, and data access in contested electronic battle environments affected by jamming, interception, signal manipulation, and constantly changing operational conditions. I designed and architected use cases so that every element of workload, identity, and system could continue to operate independently and securely even in degraded or disrupted scenarios. In parallel, I defined the enterprise and solution security architecture with LeanIX, Bizzdesign, and HOPEX as enterprise architecture, repository, and governance platforms to maintain architecture inventory, relationships, traceability, target pictures, and security governance in complex environments. For the architectural designs, I used Sparx Enterprise Architect to describe formal architecture views, interfaces, trust boundaries, and system architecture in both IT and OT environments. IriusRisk was used for threat modeling of the solution to identify architecture-driven risks, derive security requirements, and detect countermeasures and design gaps directly from the solution models. Risk and compliance management was supported with Archer. Architecture decisions, control gaps, and operational risks were translated into controlled governance and auditable compliance measures. For documentation, collaboration, and visual design, I used Confluence to maintain Architecture Decision Records, Security Blueprints, and workflows. I used Lucidchart and draw.io to create design artifacts tailored to stakeholders. I also defined OT security concepts with support from electrical and mechanical engineers in the areas of oil, vehicle onboard systems, rail, power plants, pharma, gas turbines, and nuclear technology. I created the end-to-end OT security strategy, starting with global policy, developed into standards and procedures, and finally aligned with Bell-LaPadula, Purdue Model, SABSA, TOGAF ADM, CENELEC 50701, IEC 62443, and NIST standards. In addition, I worked with engineering team leads to identify critical KBP assets and place them under protective measures that segmented SCADA, PLC, and HMI assets. I drove collaboration between Security, IT, and OT teams to create standardized workflows and use cases for the OT security solution catalog, while integrating Defense-in-Depth and Zero-Trust principles into operational environments. A key part of my work was integrating multidisciplinary engineering, security, and operations stakeholders into a unified security blueprinting strategy and ensuring that architecture, threat modeling, governance, and documentation were technically strong and operationally practical.

Raphael V.

Tech- / Team Lead / Architect / Engineer

Last position:

Tech- / Team Lead / Architect / Engineer at Freelance IT Consultant

Independent Software Engineer focusing mainly on complex backend architectures.

Semir A.

Engineering Manager

Last position:

Engineering Manager at Grafana Labs

I lead a team of 10 engineers across EMEA split into 2 squads (ingest and query), focused on developing the next generation of logging systems.
Leading the Loki team in Europe, overseeing the logging solutions at Grafana. I manage a diverse team of engineers, ranging from mid-level to principal, ensuring we deliver top-tier results.
One of our key achievements has been the successful development and launch of ExploreLogs and AdaptiveLogs.

Taher S.

DevOps Engineer

Last position:

DevOps Engineer at Confidential

Working with developers, security, and operations teams to align requirements
Supporting product owners and development teams in using logging and monitoring solutions based on the Elastic Stack
Developing and standardizing log schemas as well as defining practical standards for observability
Designing and further developing logging architectures for complex, distributed multi-tenant environments
Connecting application and infrastructure logs as well as security tools and metrics
Optimizing data flows and modeling for analysis and reporting purposes
Building automated infrastructures using Terraform/Terragrunt and Ansible
Maintaining and further developing CI/CD pipelines in GitLab as well as automated development environments in Hetzner Robot
Operating and automating Proxmox clusters including Ceph storage
Setting up and operating Kubernetes (k3s) clusters on Fedora CoreOS including base services such as Vault, OpenLDAP, and HA Proxy
Implementing security-critical infrastructures according to BSI baseline protection and securing existing systems
Supporting the operation of solutions in cloud environments (including AWS)
Working in agile teams using Scrum and Kanban
Technologies/ applications: Elastic Stack (Elasticsearch, Logstash, Beats/Elastic Agent, Kibana), Terraform, Terragrunt, Ansible, GitLab CI/CD, GitOps, Proxmox, Proxmox Ceph, Kubernetes (k3s), OpenShift, Helm, Kustomize, Vault, OpenLDAP, HA Proxy, Hetzner Robot systems, AWS, Prometheus, Grafana, Syslog Linux/Windows, Docker, NGINX, Apache Security & Compliance (BSI baseline protection, SIEM/SOC)

Andreas S.

Lead Developer

Last position:

Lead Developer at Software

Extended the document management system with a standard CMIS (Content Management Interoperability Services) interface
Implemented CMIS core services like navigation, access rights, search, CRUD operations, and versioning in Java
Implemented based on RESTful / OpenAPI services
Delivered as a fat-jar and native container image
Deployed on-premises and serverlessly as an Azure Container Application using Terraform
Improved team autonomy through infrastructure engineering and short feedback loops
Established observability with OpenTelemetry, Azure Monitor, and Azure Logic Apps
Introduced Terraform and trunk-based development processes
Ensured quality with BDD tests in C# using SpecFlow and Testcontainers
Created Azure DevOps pipeline integration tests
Introduced cloud deployment processes
Trained staff in cloud and Terraform

Ashkaben P.

Technical Lead Java

Last position:

Technical Lead Java at Accenture Baltics

Oversee the development process and review code to ensure quality and adherence to technical standards using Java 17, Spring Boot, Graph API, Spring Core, Spring MVC, Spring AOP, Spring Security, JPA, PostgreSQL, REST
Engage with clients to understand technical requirements and translate them into actionable tasks for the development team
Troubleshoot and resolve pre-production and production bugs, conducting analysis, diagnosing issues, and implementing solutions to maintain optimal system performance
Guide and mentor the Agile development team, providing technical expertise, promoting best practices and coding standards, and fostering a collaborative environment where team members can thrive
Contribute to overall project planning and customer relationship management to deliver high-quality software solutions

Frank W.

Fullstack Software Developer