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Go Experts in Cologne

in minutes from over 15,000 CVs with the power of AI

Hire experts who build fast APIs, backend services, and cloud-native systems in Go. They work with goroutines, standard library tooling, and the wider Golang ecosystem, then fit into your delivery flow with fast, precise matching and vetted, available freelancers.

Meet FRATCH Experts in Cologne, who have recently used Go

Verified expert

Hassan Amjad

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IT Consultant

Düsseldorf
Hassan Amjad

Last position:

IT Consultant at ALDI South (Albrecht's Discount)

  • Supporting the DevOps team in Terraform-managed, multi-region AWS infrastructure to achieve environment parity.
  • Developed end-to-end CI/CD pipelines using AWS CodePipeline, CodeBuild, and CodeDeploy, automating the build and deployment.
  • Maintained pre- and post-deployment scripts to automate critical tasks such as database schema migrations and environment sanity checks.
  • Implemented CI/CD flow specifically for hotfixes via separate Git branches, managing back-merge activities from feature branches to release branches to ensure code integrity through automated conflict resolution.
  • Deployed a dedicated, lightweight sanity check application hosted cost-effectively on Azure Container Apps to run automated health and basic functional checks as a post-deployment activity triggered via pipeline.
  • Investigated production incidents through code changes and AWS CloudWatch logs.
  • Coordinated integration of Dynatrace APM and its APIs for monitoring purposes.
  • Full stack QA strategist for a high-traffic e-commerce platform built on a layered architecture for the back-end testing of core platform services, especially the order management system in Zed and Glue layers.
  • Managed automation activities, testing process, and refactoring practices.
  • Responsible for framework migrations, setup, and training for new automation frameworks.
  • Promoted a shift-left approach within the QA team and created the test concept.
  • Participated in meetings with IT managers, business owners, product owners, and team members.
Verified expert

Alexander Vasiliev

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Software Architect / Software Engineer / Tech Lead

Cologne
Alexander Vasiliev

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
Verified expert

Jacqueline Haefke

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Düsseldorf
Jacqueline Haefke

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

Verified expert

Stefan Pöter

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Managing Director

Köln
Stefan Pöter

Last position:

Managing Director at ootb automation GmbH

  • Sales of scalable automation applications in the field of machine control

Discover over 15,000 top freelancers

Statistics of experts using Go

Aggregated from the professional profiles of matched freelancers.

Experience

20 years

Position duration

4 years

Positions per freelancer

6

Top business areas

Information Technology, Operations, Quality Assurance

Top industries

Information Technology, Retail, Transportation

Certification focus areas

Information Technology, Product Development, Logistics

Bachelor's degree or higher

100%

Master's degree or higher

50%

Certifications per freelancer

3

Most common languages

German, English, Russian

Speak two or more languages

100%

Based on our profile pool as of 30 Aug 2026.

About the technology

Go basics

Go is used to build backend services that stay simple to run and easy to maintain. It fits APIs, infrastructure tools, event-driven systems, and command-line utilities where clear structure matters.

Where it fits

  • REST and gRPC services
  • Cloud-native microservices
  • Platform tooling and internal services
  • Concurrency-heavy workloads
  • Network and automation tools

Ecosystem

Strong Go work is not only about the language. It also involves modules, testing, profiling, standard packages, and common libraries for HTTP, logging, configuration, and database access. In Cologne, this often comes up in teams that run distributed services and need clean handovers with local or remote specialists.

When to bring in experts

Bring in freelance Go experts when a service needs to be built quickly, hardened, or untangled after growth. They help with service design, performance tuning, code reviews, migrations from older stacks, and shipping features without making the codebase hard to change.

What good professionals do

A strong Go specialist writes code that is easy to read, test, and operate. They understand context handling, concurrency, error design, observability, and deployment concerns, not just syntax. They also know when plain standard library code is better than extra dependencies.

Signals you need Go help

  • Slow services or memory issues
  • Repeated bugs in concurrent code
  • A new backend needs a stable foundation
  • An existing service needs refactoring or cleanup
  • Your team needs Go knowledge for a short delivery window
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Frequently asked questions

Curious about Go? Here are the answers that come up again and again.

Go is mainly used for backend services, APIs, cloud tools, and other systems that need to be fast, clear, and reliable. Many teams also use Go for infrastructure software, workers, and command-line tools because it is straightforward to ship and maintain.

Go and Golang refer to the same language. Golang is a common search term, but the official name is Go, and most professionals use that name in documentation, code reviews, and project discussions.

Go freelancers are a good fit when you need a service built from scratch, an existing codebase cleaned up, or a delivery gap covered quickly. They are also useful when concurrency, deployment, or service design needs specialist attention.

Go is often chosen when teams want simple deployment, strong concurrency support, and code that stays easy to reason about. Compared with Java, it is usually lighter for services and tooling; compared with Python or Node.js, it is often preferred for backend systems that need predictable behavior under load.

A good Go specialist usually knows HTTP, gRPC, SQL, testing, observability, and container-based deployment. For many projects, experience with Docker, Kubernetes, message queues, and cloud services matters just as much as the language itself.

The right Go experience depends on the work. A small utility may only need solid language skills, while a distributed service with concurrency, tracing, and deployment concerns needs someone who has shipped production systems and can make trade-offs clearly.

Yes, Go work is often well suited to remote collaboration because the language and tooling are built around clear code, tests, and repeatable builds. For teams in Cologne, a mix of remote work and on-site sessions can work well when architecture reviews or handover discussions benefit from direct contact.

Look for Go code that is readable, well tested, and focused on maintainability. Good signs include thoughtful error handling, sensible package structure, clean concurrency patterns, and answers that explain why a design was chosen, not just how it works.

Of the freelancers in Cologne, Germany who have used Go in their recent projects, 100% 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 Go in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 4 years.

The most common languages among freelancers in Cologne, Germany who have used Go in their recent projects are German (100%), English (100%), and Russian (17%).

The most common industries among freelancers in Cologne, Germany who have used Go in their recent projects are Information Technology (83%), Retail (50%), and Transportation (33%).

The most common business areas among freelancers in Cologne, Germany who have used Go in their recent projects are Information Technology (83%), Operations (67%), and Quality Assurance (67%).

Main locations of FRATCH Experts, who have recently used Go

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 Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg

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Philipp Thomaschewski

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