Helm Expert in Cologne
to ship reliable Kubernetes releases with vetted, available freelancersHire experts who package Kubernetes applications, manage chart repositories and automate repeatable releases across development and production. Get fast, precise access to vetted, available freelancers who match your technical and delivery needs.
Meet FRATCH Experts in Cologne, who have recently used Helm
Jens R.
Last position:
Platform Architect & Senior Developer at Direct client, industrial measurement technology, medium-sized company
- Technical leadership across hardware, firmware, and software teams; scope: hardware/firmware team (4 people) and leadership group (5 people)
- Consolidated and documented a product family that had grown over more than 15 years and aligned it with CRA compliance — from the bare-metal I/O module to the cloud interface.
- Provided the most important customer product with the essential requirements and architecture documentation within two months — for a firmware landscape that had grown over more than 15 years. It now supports the customer’s modernization strategy.
- Established a monthly reporting line to the supervisory board and executive board within three months: nine meetings since 12/2025. The report itself is versioned and built from the CI pipeline; it is based on automatically collected activity and release data instead of assessments.
- Built a container-based CI/CD infrastructure from scratch: cross-compilation, host tests, and documentation builds in one continuous pipeline.
- Introduced declarative QA gates for DevOps and development artifacts — from the start using lefthook instead of pre-commit, executed in a dedicated container image.
Technologies used: arc42, req42, tpo42, docToolchain, PlantUML, ArchiMate, C4 model, ADR, C, C++ (GTest), CMake, Bare Metal (ARM Cortex-M3/M7), OCI containers, Jenkins, lefthook, Prometheus, Grafana, SBOM, CRA, OPC, SCADA, PLC integration, IPv6 migration, Zero Trust, Sociocracy 3.0, Cynefin
Patrick D.
Last position:
Fullstack Developer
- SPA for automated communication of medical findings with role-based access (Sanctum)
- Server-side LLM integration (OpenRouter) with structured processing
- Automated sending via SMS/voice call (Twilio, ElevenLabs) with queue + status retry
- Full test coverage with 80+ documented test cases
Technologies: PHP, Laravel, LLM API (OpenRouter), Twilio, ElevenLabs, Laravel Sanctum, PHPUnit, Playwright, Docker, REST
Andreas B.
Last position:
Senior Software Developer at ELIONOVA AG
- Created an application to control measurement hardware with a Tauri application using React.JS and TypeScript on Raspberry Pi
- Developed a cloud application for storing and analyzing measurement results using Spring Boot and React.JS
- Built a Tauri application for printing ZPL labels on Windows
- Technologies: Java, JavaScript, Tauri, Rust, React.JS, AWS, Kubernetes, Docker, GitLab CI/CD, REST API (JSON), Maven, CI/CD, PostgreSQL
Andreas K.
Last position:
Backend Developer at Univention GmbH
- Developed a SCIM-compliant Python interface to connect external systems
- Expanded and enhanced UCS modules in Python
- Extended and newly developed Helm charts for container orchestration in Kubernetes
- Maintained and further developed CI/CD pipelines in GitLab
- Implemented automated tests with Pytest and Playwright
'Nubus' is based on a microservice architecture, relies on open source technologies, and runs in Docker containers.
UCS is an IAM complete solution based on Debian, used as an alternative to Microsoft's Active Directory. The work was characterized by the close integration of infrastructure and application logic.
Allal K.
Last position:
Java Senior Full Stack Developer at Insurance ÖRAG
- Further development of a policy administration system (contract/claims) for the legal expenses insurer ÖRAG.
- My role: Senior Software Developer.
- The team consists of 12 developers.
- Technologies used: Java 8/21, Java EE, Quarkus, WebLogic, JPA, RabbitMQ, JTA, CI, CD, Jenkins, DB2, Maven, Jenkins, GIT (bitbucket) later GitLab, Junit, Elasticsearch, Mockito, Jira, SonarQube, Scrum, React, Workflow
- Migration and modernization of legacy systems: rewrote C and C++ code in Java to improve maintainability, scalability, and performance. Refactored Python into Java, including optimization and integration into modern architectures.
- Study on the use of AI (Codex) for implementing a Java feature. The goal is to compare the time spent and productivity of AI-supported development with a classic implementation by a developer. The results should show how strongly the use of AI affects development time and efficiency.
- Development of the following tariff calculators for the years 2024/2026: private, companies, doctors, farmers, owner-occupied G + H, landlords, traffic, club, top managers, sales representatives, special criminal law, savings bank, municipal, BayGT, doctors, Dehoga
Markus G.
Last position:
Full Stack Developer at REWE Digital
- A warehouse valuation system was reimplemented using Java, Spring Boot, and Camunda. The backend solution focuses on integration and batch calculations, the frontend on managing formulas and reviewing results.
- Java 21
- Spring Boot
- JPA
- Maven
- REST
- Kafka
- PostgreSQL
- DB2
- Liquibase
- Google Cloud Storage
- Keycloak
- GitLab CI/CD
- Helm
- Terragrunt
- SonarQube
- Angular
- IntelliJ
- JUnit 5
- Mockito
- Open API
Alexander V.
Last position:
Senior DevOps / Platform Engineer at Kaufland e-commerce / real.digital (ex hitmeister.de)
- Evolved the platform from bare-metal infrastructure with a monolithic PHP application to a hybrid Google Cloud architecture with Go microservices on Kubernetes
- Managed and scaled a production infrastructure with 300+ VMs and dozens of clusters, including MySQL, PostgreSQL, MongoDB, RabbitMQ, Redis and Elasticsearch clusters
- Designed architecture, deployment, monitoring, performance analysis, and upgrades for all platform services using Terraform and Ansible
- Migrated observability systems from ELK and Prometheus to Datadog, managed with Terraform
- Introduced Jenkins CI/CD with SonarQube integration and automated tests to speed up feedback cycles
- Containerized the testing environment and implemented GitLab CI pipelines for Docker image builds, static code analysis, and infrastructure tests
- Performed zero-downtime migrations of MySQL and MongoDB clusters to Google Cloud
- Developed reusable Ansible roles for database clusters and automated data obfuscation for staging environments
- Decomposed monolithic databases and migrated to microservice architectures
- Built tools to detect and optimize slow queries in MySQL and MongoDB
- Conducted online schema migrations with pt-online-schema-change without downtime windows
- Developed internal Go applications for batch queries, GitLab-Jira integration, and MongoDB backup recovery
- Technologies: Debian, Ubuntu, Alpine, Go, Bash, Python, PHP, SQL, GitLab CI, Jenkins, Drone CI, MySQL, MongoDB, PostgreSQL, Redis, Elasticsearch, RabbitMQ, Kafka, Docker, Kubernetes, Nomad, Ansible, Terraform, Grafana, ELK, Prometheus, Datadog, Nagios, Zabbix, Nginx, HAProxy, Vault, Helm, SonarQube, Filebeat, Auditbeat, Google Cloud, AWS
Jacqueline H.
Last position:
Kitchen Appliance Manufacturer
Setting up and enhancing an international subscription management system
Migrating and decommissioning a Hybris-SAP system and integrating Zuora
Implementing numerous interfaces to various systems (external and internal)
Setting up and improving monitoring with Grafana, Prometheus, and Databricks
Introducing logging with Loki
Implementing business requirements using jQuery, Thymeleaf, Spring Boot, Java, Go, and Python
Adjusting and extending the GitLab CI pipelines
Setting up and extending infrastructure as code with Terraform and ArgoCD on AWS
Setting up and running E2E and performance tests
Expanding the Databricks business intelligence solution to provide various KPIs
Responsibilities: Architecture, DevOps, development, unit tests, coaching employees and apprentices, E2E, smoke, and integration tests, agile methods consulting (Kanban, Scrum)
Technologies and methods: Java, Go, Kotlin, Node.js, Spring Boot, SOAP/REST, Quarkus, Thymeleaf, Vaadin, Slack, Jira, Confluence, IntelliJ, GitLab, SQS, Kafka, AWS, Kubernetes, Terraform, Maven, Gradle, GitLab CI, Databricks
Discover over 15,000 top freelancers
Statistics of experts using Helm
Aggregated from the professional profiles of matched freelancers.
Experience
19 years (Germany: 18 years)
Position duration
2.1 years (Germany: 1.8 years)
Positions per freelancer
11 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Product Development, Business Intelligence
Bachelor's degree or higher
67% (Germany: 90%)
Master's degree or higher
50% (Germany: 55%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 96%)
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Cologne are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Cologne using Helm
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Helm experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (88%)
- Automotive (63%)
- Banking and Finance (63%)
- Retail (63%)
- Healthcare (50%)
- Government and Administration (50%)
- Telecommunication (50%)
- Insurance (38%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Kubernetes packaging
Helm is the package manager for Kubernetes. It bundles application manifests, configuration values and release logic into reusable charts, so teams can install and update complex workloads consistently. Companies use it for web applications, APIs, data services, internal tools and platform components running across clusters.
Charts and releases
A Helm chart defines templates, default values, dependencies and metadata for an application. Specialists create clear chart structures, manage environment-specific overrides and control releases with upgrades, rollbacks and versioned packages. They also establish conventions that make charts easier to review, test and reuse across teams.
Ecosystem and tooling
Helm works closely with Kubernetes resources and the wider cloud-native toolchain. Strong professionals commonly bring experience with:
- Kubernetes deployments, services, ingress and secrets
- Helm templating, values files, hooks and chart dependencies
- OCI registries and chart distribution workflows
- Git-based delivery with Argo CD, Flux or CI pipelines
- Policy, security and observability checks for releases
When expertise matters
Freelance expertise is useful when a team is standardising charts, moving workloads into Kubernetes or replacing manual release steps. It can also help when templating has become difficult to maintain, upgrades are risky or several teams need a shared chart library. In Cologne, specialists may support local delivery teams on site, remotely or through a hybrid setup.
Delivery and automation
Helm specialists connect packaging with reliable delivery processes. They can design promotion flows between environments, validate rendered manifests, manage secrets safely and integrate chart checks into continuous integration. They distinguish configuration changes from application changes and document the release path for operations and product teams.
What strong specialists bring
Quality is visible in predictable charts, readable templates and controlled configuration. Experienced professionals test rendered output, handle Kubernetes API changes and make failure recovery practical rather than theoretical. They also ask about ownership, access, rollback expectations and language needs before changing a team’s delivery process.
Frequently asked questions
Not sure where to start with Helm? These answers cover the essentials.
Helm packages Kubernetes applications as charts that combine templates, configuration and dependencies. Teams use it to install, upgrade, share and roll back releases consistently across environments.
Helm uses reusable charts and templating to package applications for distribution. Kustomize works by composing and modifying Kubernetes manifests without a separate templating language, so the better choice depends on reuse, configuration complexity and team practices.
A strong Helm specialist should understand Kubernetes resources, container images, YAML and cluster security. Experience with Git, CI/CD, OCI registries, Argo CD or Flux is also valuable when charts are part of an automated delivery process.
The right Helm experience depends on the work. Creating a focused chart may require less context than redesigning a shared chart library, migrating releases or introducing automated promotion across several Kubernetes environments. Ask for examples close to your cluster setup and delivery risks.
Helm work is often well suited to remote collaboration because charts, rendered manifests and delivery pipelines can be reviewed in version control. On-site work in Cologne can still help when access controls, workshop sessions or coordination with an existing platform team are important.
Review whether Helm charts have clear values, sensible defaults and predictable rendered manifests. Strong work includes validation, dependency control, safe secret handling, upgrade and rollback testing, along with documentation that another team can follow.
Helm manages packaged Kubernetes releases, but it does not replace every configuration or infrastructure tool. Teams may combine it with Kustomize, GitOps controllers, Terraform or policy tools, depending on how they provision clusters and govern application changes.
Before using Helm, clarify the Kubernetes distributions, release ownership, repository model and target environments. Also confirm the team’s expectations for chart compatibility, secrets, rollback procedures, review language and collaboration between remote and on-site contributors.
The average hourly rate of freelancers in Cologne, Germany who have used Helm in their recent projects is 93 €, which corresponds to a daily rate of about 740 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Helm in their recent projects, 67% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used Helm in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 2.1 years.
The most common languages among freelancers in Cologne, Germany who have used Helm in their recent projects are German (100%), English (100%), and French (38%).
The most common industries among freelancers in Cologne, Germany who have used Helm in their recent projects are Information Technology (88%), Automotive (63%), and Banking and Finance (63%).
The most common business areas among freelancers in Cologne, Germany who have used Helm in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (63%).
Main locations of FRATCH Experts, who have recently used Helm
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin 
Hamburg 
Munich 
Frankfurt 
Stuttgart 
Dusseldorf Countries:
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Philipp Thomaschewski
FRATCH CEO
