Distributed Systems Experts in Hamburg
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Meet FRATCH Experts in Hamburg, who have recently used Distributed Systems
Guido Bäcker
Last position:
Independent Management Consultant and Interim Manager at BCTC Unternehmensberatung Guido Bäcker
Consulting, training, and coaching in the financial sector on strategy, organization, and IT topics
MorgenFund: Advising the operator of a fund platform on software selection for a sub-ledger "Cash Accounts" based on Virtual IBANs (VIBAN)
Structuring requirements, market screening, creating RfIs, communicating with vendors, and conducting the selection process
UniCredit/HypoVereinsbank: Workstream lead "Booking and Customer Reporting" in the payment transformation project "PULS"
Business analysis, creating business requirements and aligning solution items as part of the functional specification with the bank's IT service providers
Business analysis of SEPA CT and SWIFT MX (.camt, .pain, and .pacs formats), change management, team lead for a virtual team of fifteen line experts, and stakeholder management
equensWorldline Germany: Program management for three projects of the SWIFT service bureau (CBPR+, ESMIG, and Euro1Step1 migration) as part of the SWIFT MX migration
Managing individual project managers regarding overarching goals and requirements; reporting to internal and external committees and stakeholders; coordinating with dependent projects and programs
Project management/PMO: interim project management, stand-in for project managers, resource planning, budget and cost management, general PMO tasks
Cornelius Höfig
Last position:
Solution Architect at STIHL
- Remodeling of the system architecture for an Azure-based platform aimed at rapid development of new functionalities
- Modeling of a staging concept for the fulfillment of diverse customer and QA needs
- Creation of requirements for, and oversight of, a proof-of-concept supplier project for a Flutter app with highly advanced BLE functionalities
- Comparison of multiple observability platforms for feasibility and requirements fit within the project environment
- Creation of a mobile app architecture based on domain-driven architecture
- Position of technical advisor and accountable solution architect for two development teams
- Execution of architecture reviews and alignment of changes with architectural expectations
- Skills & Technologies: Microsoft Azure , App Services, NodeJS Mono-repository, microservice architecture, domain driven design, self contained systems, requirements engineering, CI/CD, DevOps, API design, solution architecture
Lutz Hühnken
Last position:
Fractional CTO, Interim Engineering Manager, Architect at independent
Strategic technology leadership and architecture consulting.
- Fractional CTO & interim management for startups, scale-ups, and enterprises – technical strategy, team building, architecture oversight, and delivery.
- Architecture consulting on cloud-native, distributed, and event-driven systems: reviews, design partnerships, and ongoing advisory.
- Event-driven architecture training – a hands-on 2-day course for engineering teams
- Conference speaker on distributed systems
Thorsten Boock
Last position:
Senior Backend Engineer at VTG Rail Europe
traigo is VTG's digital rail logistics and fleet management platform. It processes large volumes of telemetry, mileage, geofence, sensor and wagon-movement events in near real time and provides operational services for rail logistics customers across Europe.
As part of Team Customer Selfcare, I worked on the design, implementation, optimisation and operation of large-scale backend services and event-driven processing pipelines — covering both feature development and operational ownership of business-critical production systems. I also regularly acted as first responder for production incidents, data inconsistencies and performance investigations across multiple distributed services.
- Design and implementation of event-driven backend services.
- Migration and replacement of legacy processing pipelines.
- Development of replay / rebuild mechanisms for large event datasets.
- High-throughput asynchronous event processing on SNS / SQS.
- Database and query optimisation for PostgreSQL and DynamoDB.
- Design of scalable read / write models and aggregation pipelines.
- Production troubleshooting and operational support.
- Performance tuning and infrastructure scaling.
- Design and stabilisation of integration and system tests.
- Technical concepts, architecture documentation, and cross-team collaboration.
- Support the further development of existing GitLab CI/CD pipelines
Geofence & Wagon Stay Processing
- Algorithm to detect vehicles within geofences (entry, exit, dwell time).
- Event sourcing with guaranteed chronological order within the affected time window.
- Refactored geofence event and wagon-stay processing logic for performance.
- Resolved race conditions and event-ordering problems in distributed services; server-side filtering, aggregation and optimised query pipelines.
- Repair and replay tooling for corrupted or inconsistent movement data.
Fleet Metadata & Mileage
- Modernised the service; migrated storage from DynamoDB to PostgreSQL to improve traceability and accelerate new features.
- Scalable mileage aggregation and replay mechanisms.
- Read / write models and optimised queries for high-volume mileage calculations.
Sensor & Telematics Integration
- Integrated telemetry and sensor processing pipelines.
- Snapshot and state-calculation logic for sensor systems.
- APIs and persistence models for wagon sensor data; data-quality improvements.
- Further development of a service using gRPC for intra-service communication.
Movement Segment Processing & Routing
- Migrated services to new movement-segment event streams.
- Built replay and rebuild tooling for segment correction.
- Optimised throughput and reliability for high-volume event processing.
Condition Monitoring & Wagon Analytics
- APIs and backend services for wagon condition monitoring.
- Brake-wear prediction processing and wagon analytics functionality.
- PostgreSQL views and optimised query models for operational dashboards.
Operational Reliability - First Responder
- Investigated production incidents and distributed-system failures; DLQ analysis, replay and operational recovery.
- Tuned database performance and AWS infrastructure under production load.
- Improved observability, monitoring and operational tooling.
- Supported rollout strategies, monitoring and post-deployment stabilisation.
Bogdan Melnychuk
Last position:
Tech Lead at cirplus
- Sole technology owner, leading architecture, development, operations, and infrastructure. Leveraging AI to accelerate work in areas like front-end and design.
- Built full-stack solutions (backend, React front-end) with CI/CD pipelines and observability standards, setting the foundation for an engineering organization.
- Delivered AI-driven features using LLMs, automating supplier–buyer matching, lead generation, email campaigns, and reducing manual effort.
- Reduced cloud costs by 90% by migrating the system to an AWS serverless architecture
Felix Ortmann
Last position:
Cloud Architect at uni-assist e.V.
- Project lead ‘Cloud Migration’ for moving the on-premise production environment to Scaleway.
- Transformed a Docker-Swarm legacy setup to a modern Kubernetes-based cloud environment.
- Architected a GDPR-compliant cloud landscape and deployment setup – 100% European sovereign cloud.
- Hands-on bootstrapped the cloud environment with Terraform, ArgoCD, and GitLab Pipelines CI/CD.
- Replaced the legacy VPN with modern mTLS PKI and deep AD integration.
- Managed an 11-headed agile team using Kanban, moderating team meetings and plannings.
- Successfully finished the migration, moving infrastructure, services, and data, from planning to execution.
Discover over 15,000 top freelancers
Statistics of experts using Distributed Systems
Aggregated from the professional profiles of matched freelancers.
Experience
19 years
Position duration
3 years
Positions per freelancer
8
Top business areas
Information Technology, Operations, Product Development
Top industries
Information Technology, Automotive, Professional Services
Certification focus areas
Information Technology, Strategy
Bachelor's degree or higher
100%
Master's degree or higher
60%
Certifications per freelancer
1
Most common languages
German, English, Spanish
Speak two or more languages
100%
Based on our profile pool as of 30 Aug 2026.
About the technology
Core scope
Distributed systems connect multiple services or nodes so they behave like one system. They power platforms that must stay responsive under load, keep data in sync, and continue working when parts fail. In practice, this means careful work on communication, storage, consistency, and recovery.
Typical work
- Service-to-service communication and APIs
- Messaging, queues, and event-driven flows
- Replication, sharding, and data consistency
- Fault tolerance, retries, and failover
- Performance and latency tuning
Ecosystem
Strong professionals usually work with cloud infrastructure, container platforms, observability tools, and streaming or queue systems. Common patterns include microservices, distributed caching, and event sourcing. They also know how to read traces, logs, and metrics to find where a system breaks down.
When to bring in help
Companies bring in freelance expertise when a product grows beyond a single service or a monolith starts showing limits. That often happens during platform redesigns, reliability work, migration to cloud-native architecture, or when teams need help with hard production issues. In Hamburg, this is common in logistics, commerce, media, and finance systems that rely on stable data exchange.
What good specialists do
- Make failure modes visible and manageable
- Choose clear consistency trade-offs
- Reduce coupling between services
- Improve deployment and recovery paths
- Document the system so teams can operate it
Hamburg collaboration
For Hamburg teams, distributed systems work often blends remote delivery with on-site workshops for architecture reviews or incident follow-up. Good specialists can work in English and, when needed, fit into German-speaking teams without slowing delivery. The best engagements leave your team with a system that is easier to run, change, and trust.
Frequently asked questions
Not sure where to start with Distributed Systems? These answers cover the essentials.
Distributed systems are used when software must run across multiple machines or services and still feel like one product. They appear in payment flows, logistics tracking, search, event processing, and other systems that need scale, resilience, or parallel work. The main goal is to keep the service usable even when traffic rises or parts fail.
Distributed systems is the broader concept. Microservices are one common way to build them, but not every distributed system is microservices-based. A strong specialist can work with service meshes, messaging, shared data models, or a smaller set of services if that fits the product better.
A strong distributed systems specialist should understand networking, consistency, concurrency, and failure handling. They should also be comfortable with queues, streams, caching, observability, and cloud infrastructure. Just as important is the ability to explain trade-offs clearly so product and engineering teams can make good decisions.
Distributed systems work usually needs someone who has already handled real production issues, not just theory. If the task involves migrations, scaling, data synchronization, or incident reduction, look for practical experience with live systems. For a smaller review or design session, a focused specialist can still add a lot of value quickly.
Yes, distributed systems work is often well suited to remote collaboration because the main outputs are architecture, code review, debugging, and operational guidance. On-site time can still help for whiteboard sessions, incident retrospectives, or sensitive stakeholder meetings. For Hamburg teams, a hybrid setup is often the easiest fit.
When people search for distributed systems, they often compare the approach with monolithic architecture, microservices, or event-driven design. They may also talk about distributed computing when they mean the broader runtime and infrastructure pattern. The right choice depends on data flow, team structure, and how much failure isolation the product needs.
Ask for examples that show clear decisions, not just technology names. A strong distributed systems professional can explain why they chose a queue, how they handled retries or idempotency, and what they did after a production incident. Good signs are simple architecture, measurable improvements, and documentation the team can actually use.
For distributed systems work, prepare a short description of the system, the pain points, the main services or data stores, and any recent incidents. If your team is in Hamburg but works partly remote, note which meetings need to be on-site and which can stay online. That makes it easier for the specialist to start with the right context and avoid guesswork.
Of the freelancers in Hamburg, Germany who have used Distributed Systems in their recent projects, 100% hold at least a Bachelor's degree and 60% hold at least a Master's degree.
On average, freelancers in Hamburg, Germany who have used Distributed Systems in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 3 years.
The most common languages among freelancers in Hamburg, Germany who have used Distributed Systems in their recent projects are German (100%), English (100%), and Spanish (17%).
The most common industries among freelancers in Hamburg, Germany who have used Distributed Systems in their recent projects are Information Technology (83%), Automotive (50%), and Professional Services (50%).
The most common business areas among freelancers in Hamburg, Germany who have used Distributed Systems in their recent projects are Information Technology (100%), Operations (83%), and Product Development (83%).
Main locations of FRATCH Experts, who have recently used Distributed Systems
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.
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FRATCH CEO
