API Gateway Experts in Munich
to connect services securely, matched in minutes with vetted freelance professionalsHire experts who design API gateways, manage service-to-service traffic, and deliver secure routing with tools such as Kong, Amazon API Gateway, and NGINX. Get fast, precise matching with vetted, available freelancers for remote or on-site work.
Meet FRATCH Experts in Munich, who have recently used API Gateway
Alexandru G.
Last position:
Principal Cloud DevOps Architect at BP
In my role as Senior Cloud DevOps Architect for BP, an oil and gas company, I had the mission to migrate the Electric Vehicle Charging platform of the EV Division from on-premises and Azure to AWS cloud, resulting in a hybrid multi-cloud, multi-tenant SaaS solution.
Deployment with Kubernetes for the application layer meant provisioning Kubernetes clusters managed by EKS and AKS, with a focus on integrating them into a multi-tenant environment. This integration was achieved by using Kubernetes namespaces and access controls to ensure data isolation and privacy enforcement.
In the database layer, we chose an RDS instance with PostgreSQL to support the backend infrastructure of our applications. Tenants shared the same RDS instance, but each had a dedicated schema.
To ingest near real-time data from physical charge points (CPOs), as IoT devices, via the OCPI protocol, we ran into significant delays with batch processing. As a result, we built a real-time streaming data pipeline using Apache Kafka, while prioritizing an event-driven architecture.
Led collaboration across multiple internal teams, external vendors, cloud providers, and on-site partners to integrate over five systems into a unified solution.
Achievements:
- Successfully designed and implemented hybrid multi-cloud solutions, integrating multiple cloud platforms (AWS, Azure) with on-premises infrastructure, using Site-to-Site VPNs, Firewalls, and Load Balancing.
- Led the migration of on-premises infrastructure to multi-cloud, multi-tenant infrastructure, resulting in 30% faster processing times.
- Migrated workloads from VMware and Hyper-V environments to cloud-based VMs, leveraging cloud-native services to optimize performance, cost efficiency, and scalability.
- Designed a multi-tenant Kubernetes platform leveraging the Kubernetes ecosystem, using Karpenter for dynamic EC2 node provisioning, KEDA for event-driven pod autoscaling (e.g., Kafka message lag), and Rancher for centralized monitoring of multiple clusters (EKS, AKS, or on-prem K8s), replacing Microsoft-centric Azure Arc management service.
- Designed and implemented Python-based FastAPI microservices as part of the EV core-backend on AWS EKS application layer, powering data ingestion and customer analytics pipelines.
- Developed asynchronous, event-driven APIs (Python-FastAPI) for real-time integration with CPOs, supporting OCPI 2.3 and OICP protocols.
- Designed and implemented a secure, production-grade Azure Databricks platform using Terraform, ensuring scalability and cost efficiency.
- Migrated on-premises ERP to a hybrid Dynamics 365 architecture with ERP hosted locally and CRM running in Azure, integrated via Azure Arc.
- Automated CI/CD pipelines for Databricks notebooks and jobs using GitHub Actions & Databricks CLI, reducing deployment time. Reduced infrastructure provisioning time by 70% by automating cloud resource deployment with GitOps.
- Ensured compliance with internal audit and data governance standards (GDPR) through OAuth2/OIDC-based authentication and fine-grained role-based access controls.
- Developed a Zero Trust security model, enforcing least-privilege access and microsegmentation, enhancing security posture and compliance with GDPR and NIST.
- Built interactive analytics dashboards in Amazon QuickSight, integrating data from S3 and Redshift to deliver real-time business insights and visualizations with embedded access for multi-tenant users.
- Led cloud security assessments and full-lifecycle cybersecurity integration during M&A, covering AWS, Azure, IAM (Entra ID), and data protection, while aligning security posture with NIST, ISO 27001, and GDPR across hybrid and cloud-native environments.
- Reduced cloud costs by 64% for a client's dev environment by implementing automated start/stop schedules for EC2 and RDS instances via AWS CDK with EventBridge Scheduler or AWS Systems Manager.
Tech stack:
- Infrastructure as Code: Terraform, AWS CDK, Ansible.
- Containers: Kubernetes on EKS, AKS, Docker.
- Streaming Data Processing: Kafka to Confluent Cloud, after AWS MSK.
- Frontend: TypeScript, React, NextJS, Hooks, Styled Components.
- Backend: Python with FastAPI, also Node.js with NestJS.
- Database: Aurora on PostgreSQL with TypeORM, RDS on SQL Server, Azure Databricks full setup and administration, ETL Pipelines.
- CI/CD and GitOps: GitHub Actions, Azure DevOps, ArgoCD.
- Monitoring and Observability: Prometheus and Grafana.
- Virtualization: Hyper-V, VMware Cloud on AWS, Azure Migrate.
- ERP Systems: Odoo, Microsoft Dynamics 365 Business Central on Azure, integrated with Azure Arc.
- Networking: Site-to-Site VPNs, AWS Direct Connect, Azure ExpressRoute, Firewalls (AWS Network Firewall, Azure Firewall).
- Security: IAM, NIST Framework, Zero Trust Security, AWS WAF, AWS Shield, GuardDuty.
Thomas H.
Last position:
Senior MLOps, DevOps Engineer at Trianel Energy
- Build and operate an end-to-end MLOps platform on Azure ML and Kubernetes (Kubeflow) for the automated deployment, monitoring, and scaling of forecasting models (including Temporal Fusion Transformer, Informer, Autoformer).
- Implement CI/CD pipelines in Azure DevOps for the full ML lifecycle – from resource provisioning (Terraform), data transformation (Hugging Face Datasets, Pandas, PyTorch, CUDA cluster) through training and evaluation to model registry and endpoint deployment.
- Integrate MLflow for experiment tracking, model versioning, performance monitoring, and automated registration in the Azure Model Registry.
- Develop and containerize PyTorch training jobs (Azure Notebook, Jupyter Notebooks) for price and time series forecasting (PFC models) with automatic rollout via Azure ML Endpoints and REST/gRPC interfaces, Docker containerization, secured with OAuth 2.0.
- Set up monitoring and alerting mechanisms (Prometheus, MLflow Metrics), log centralization, and cost monitoring.
- Automate infrastructure provisioning and model deployment using Terraform, Helm, and Azure CLI; connect to existing market data systems and event pipelines.
- Migrate existing workloads and databases (IONOS → Azure, MongoDB) with integration into central MLOps workflows and internal networks.
- Extend the platform with LLM-based tools (LangChain, LangServe) to integrate GPT-based analysis modules into existing Spring Boot services for market anomaly detection and automated reports.
- Analyze and architect a software solution to process large volumes of data efficiently (>3000 messages/sec.) (market data store).
- Spring Boot / Java 21 container development with RabbitMQ for distributing stock market data via MongoDB (Kubernetes) with fast storage of data in Redis RMaps, deduplication, forwarding messages to Read Model queues, and building Read Models for UI display in MongoDB.
- Integration of RESTHeart to create a REST API for MongoDB.
- Build an Angular frontend to simplify data queries and master data maintenance.
- Agentic coding with remote and local LLMs (Claude Sonnet, Ollama Qwen) and MCP servers.
- Develop Python scripts for transforming and cleaning incoming stock market data (Pandas, scikit-learn).
Srinivasu K.
Last position:
Atruvia
Project: Tax Exemption Order Application
The client has an existing application for creating and maintaining tax exemption orders for end customers; design and implementation of a comparable application for internal employees.
- Design and implementation of microservices and the UI for the business area "tax exemption orders" using Domain Driven Design as well as Spring Boot and Angular.
- Implementation of reactive, non-reactive, and asynchronous APIs (Spring REST, WebFlux, GraphQL).
- Development of the Angular application, including state management using Signals, RxJS Observables, and subscriptions.
- Securing the API and the application using OAuth2, JWT, and OpenID Connect.
- Configuration and setup of CI/CD pipelines with Jenkins.
- Collaboration with cross-functional teams and conducting code reviews.
Environment: Java, Spring Boot, Angular 18 & 19 (standalone, signals), RxJs, Bootstrap CSS, Vitesting, OpenShift, Istio, microservices, Kafka, Dynatrace, Jenkins, GitLab, Graylog, Sonar, Oauth2, OracleDB
Enis S.
Last position:
Software Developer at 50Hertz Transmission GmbH
- Participated in the gradual modernization of components into cloud-native 12-factor applications.
- Worked closely with the business operations team to eliminate manual processes and resolve several performance bottlenecks.
- Designed and implemented a CI/CD pipeline to increase developer productivity, enforce quality and security checks, and automate product delivery.
- Migrated several components into the OpenShift Kubernetes cluster.
- Built a monitoring stack from scratch with Prometheus and Grafana to monitor services running in OpenShift.
- Developed dashboards in both Grafana and Splunk for operational transparency.
- Implemented an OIDC/OAuth2-based single sign-on (SSO) solution with Keycloak to secure multiple applications.
- Technologies: Java, Spring, Quarkus, Kafka, MySQL, Cassandra, Redis, Spring Data, Hibernate, Docker, Kubernetes, OpenShift, Keycloak, OIDC, OAuth2, Helm, Prometheus, Grafana, Splunk, Spark.
Jiri S.
Last position:
Quality Manager/Test Management at Noriba GmbH
- Test concept creation
- Creation of test processes
- Coordination of TC development: stress tests, functional tests, performance tests, high data rate tests, integration tests, etc.
- HW testing: FPGA, RF
- Test automation and regression tests
- Ensuring 24/7 operation of the test system
- Analysis & reporting
- Regular coordination of the test team, meetings with other stakeholders
- Communication and coordination with stakeholders and the project manager
Roxana G.
Last position:
Freelance Senior Frontend Developer at RHI Magnesita
- Designed and developed a high-performance internal resource management platform using React and TypeScript, optimizing dynamic data rendering and state management.
- Built a React Native application to support mobile access to internal tools, enabling on-the-go project tracking for field teams.
- Developed custom 2D canvas-based visualizations using Pixi.js to simulate material flows and refractory layer behaviors.
- Integrated Pixi.js with React components for interactive diagrams and real-time UI updates.
- Developed interactive 3D visualizations using React.js for displaying refractory product layouts and simulations, supporting engineering and sales teams with dynamic product previews.
- Integrated Three.js within the React ecosystem to allow manipulation of 3D models in real-time via browser, enhancing user engagement and field configurability.
- Integrated a headless CMS to enable dynamic content updates by non-technical users, reducing content deployment time by 40%.
- Led AWS CloudFront optimization initiatives, improving portal load speeds by 30% globally.
- Actively collaborated with cross-functional Agile teams and product owners to deliver prioritized features with a fast feedback loop.
- Key Technologies: React.js, React Native, Three.js, TypeScript, Contentful CMS, AWS S3/Lambda/CloudFront, Cypress, Agile Scrum
Sascha J.
Last position:
Agile Coach & Partner at Agisolve GmbH – Pragmatic Agility® | Edler & Stiegler GmbH | CTN Consulting
- Create a product and service portfolio delivering a 360 degree approach to digital corporate sustainability covering KPI management, CSRD reporting and sustainable strategy
- Create vision and business case
- Onboard and align business partners, negotiate contracts
- Set up partner network as self-organized agile team
- Co-develop product and service portfolio
- Coordinate sales and marketing, go-to-market strategy and roadmap
Stephan S.
Last position:
Senior Data/ML Consultant & Technical Lead at Jolin.io
Role: Software Engineer & Applied Mathematician (Mathematical optimization for scheduling; duration: 1 months; team setting: Team of 2, remote; technologies: JuMP, Julia, Pluto, Svelte, JavaScript, TypeScript, JetBrains Space, Terraform, Nomad)
Role: Software & Cloud & Web Engineer (Building scalable data science compute cluster from scratch; duration: 11 months; team setting: Team of 1, on-site; technologies: Terraform, Kubernetes, k8s ingress, k8s services, k8s RBAC, k8s networking, k3s, etcd, S3, DNS, certificates, Julia, Pluto, JavaScript, Tailwind, Astro, npm, Parcel, Preact, MUI, JWT, AWS SQS, AWS RDS, Python, GitLab, GitHub)
Role: AI & Web Engineer (Custom ChatGPT service; duration: 1 months; team setting: Team of 2, remote; technologies: Python, Poetry, LangChain, Tailwind, ChatGPT API, Flask, FastAPI)
Role: Architect & Data Engineer (Central datalake setup and ingestion; duration: 9 months; team setting: Team of 5, remote; technologies: Infrastructure-as-code, AWS CDK, Python, Boto3, PySpark, AWS Glue, IAM, S3, ECS, Fargate, Lambda, Apache Hudi, DeltaLake, Databricks, GitHub, Jira, Miro)
Role: Software Engineer (PoC Julia migration of scikit-decide; duration: 1 months; team setting: Team of 2, remote; technologies: Python, Julia, GitHub)
Rick G.
Last position:
Interim IT Security Analyst at GLS IT Services GmbH
- Risk Management
- Incident Management
- Security Analysis
- Secure Coding
- Information Security Management System (ISMS)
Fabian K.
Last position:
Senior Sales Engineer at apinity - A MunichRE company
- Fully establishing and executing the sales engineering function including discovery, value proposition, demos, RFPs and proof of concepts for a leading SaaS API Marketplace and Management solution
- Achieved the technical wins and closed 11 deals in partnership with 4 AEs, generating an ARR of 1.8 million. Serving large and mid-sized insurance companies, banks, and consultancies. Main focus on DACH with accounts in the whole EMEA region
- Led solution sales for technically complex environments, integrating with API gateways and cloud technologies
- Collaborated closely with strategic partners, like Google Cloud Apigee, and facilitated the transfer of technical requirements to the Product Owner team
- Setup, managed and executed a scalable onboarding program covering both business perspective (KPIs) and technical integration and enablement
- Public speaker at conferences in the DACH region like bettercode, infodays and BATBern
Discover over 15,000 top freelancers
Statistics of experts using API Gateway
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 17 years)
Position duration
3.4 years (Germany: 2.3 years)
Positions per freelancer
8 (Germany: 11)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Retail, Automotive
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
100% (Germany: 96%)
Master's degree or higher
67% (Germany: 62%)
Doctorate
11% (Germany: 9%)
Certifications per freelancer
3
Most common languages
German, English, Romanian
Speak two or more languages
100% (Germany: 99%)
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 Munich 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 Munich using API Gateway
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.
API Gateway 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 (100%)
- Retail (50%)
- Automotive (40%)
- Energy (40%)
- Banking and Finance (40%)
- Professional Services (40%)
- Aerospace and Defense (30%)
- Agriculture (30%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What an API Gateway does
An API Gateway is the controlled entry point for clients calling backend services. It routes requests, applies authentication and authorization, transforms payloads, and collects operational data before traffic reaches internal systems. It is common in microservices, mobile backends, partner APIs, and cloud-native applications.
Core capabilities
Strong gateway implementations combine traffic control with a clear API strategy.
- Route requests to services and versions
- Enforce OAuth 2.0, JWT, API keys, and access policies
- Apply rate limits, quotas, caching, and request validation
- Transform protocols, headers, and payloads
- Centralize logs, metrics, tracing, and error handling
Ecosystem and tooling
The right specialist may work with Kong, Amazon API Gateway, Azure API Management, Google Cloud API Gateway, Apigee, NGINX, or Traefik. Useful adjacent skills include OpenAPI, REST, GraphQL, gRPC, Docker, Kubernetes, service meshes, and CI/CD pipelines. Infrastructure as code with Terraform or CloudFormation helps keep gateway configuration reviewable and repeatable.
When companies need expertise
Companies often bring in freelance specialists during a microservices migration, a cloud move, or the launch of a public partner API. They also need focused support when gateway rules have become difficult to maintain or when security, latency, and observability need improvement.
- Replace scattered proxy rules with a consistent policy model
- Introduce authentication and consumer access controls
- Prepare gateways for changing services and API versions
- Diagnose routing, timeout, and upstream failures
What good delivery includes
A capable professional starts with traffic flows, service boundaries, consumers, and failure scenarios rather than selecting a product first. They document routes and policies, separate environment configuration, automate tests, and define safe rollout and rollback procedures. They also explain how gateway controls affect application teams and operations.
Working with a Munich specialist
Munich companies in automotive, manufacturing, finance, healthcare, and software may rely on gateways to expose internal capabilities safely to applications, suppliers, or customers. Remote collaboration works well when API contracts, infrastructure changes, and incident ownership are documented; on-site workshops can help when many teams must agree on service boundaries. German and English communication may both matter depending on stakeholders.
Frequently asked questions
What clients ask us most about API Gateway — answered in short.
An API Gateway provides a single entry point for requests to multiple backend services. It handles routing, authentication, throttling, caching, protocol transformation, and observability so client applications do not need to manage each service connection directly.
An API Gateway manages traffic entering a system, while a service mesh focuses mainly on communication between internal services. They can work together: the gateway protects and shapes external access, and the mesh adds internal traffic policies, identity, and telemetry.
A strong API Gateway specialist should understand API design, OpenAPI, REST, OAuth 2.0, JWT, networking, and TLS. Experience with Kubernetes, cloud IAM, Terraform, CI/CD, logging, metrics, and distributed tracing is also valuable.
The required depth depends on the scope. A simple route configuration may need focused product knowledge, while a multi-service platform requires experience with security models, versioning, resilience, observability, and infrastructure automation. Ask for examples of comparable gateway environments and decisions.
Yes, API Gateway work is often suitable for remote collaboration because configuration, API contracts, and infrastructure changes can be reviewed online. On-site sessions in Munich can still help when teams need workshops about service ownership, security, or incident procedures.
Amazon API Gateway fits teams that want a managed AWS service closely connected to the AWS ecosystem. Kong may offer more deployment flexibility across cloud, on-premises, or Kubernetes environments. The decision should consider portability, policy needs, operating responsibility, and existing skills.
Look for clear explanations of routing, identity, failure handling, and operational ownership. A credible API Gateway professional can show documented policies, automated configuration changes, useful dashboards, and a testing approach that covers security and upstream failures.
A freelancer should clarify consumers, backend services, environments, authentication flows, traffic expectations, data sensitivity, and release ownership. For API Gateway work, it is also important to agree on incident response, access to cloud accounts, change approval, and how API versions will be supported.
The average hourly rate of freelancers in Munich, Germany who have used API Gateway in their recent projects is 109 €, which corresponds to a daily rate of about 870 € based on an 8-hour working day.
Of the freelancers in Munich, Germany who have used API Gateway in their recent projects, 100% hold at least a Bachelor's degree, 67% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Munich, Germany who have used API Gateway in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 3.4 years.
The most common languages among freelancers in Munich, Germany who have used API Gateway in their recent projects are German (100%), English (100%), and Romanian (30%).
The most common industries among freelancers in Munich, Germany who have used API Gateway in their recent projects are Information Technology (100%), Retail (50%), and Automotive (40%).
The most common business areas among freelancers in Munich, Germany who have used API Gateway in their recent projects are Information Technology (100%), Product Development (90%), and Project Management (80%).
Main locations of FRATCH Experts, who have recently used API Gateway
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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Frankfurt Request a free demo
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Philipp Thomaschewski
FRATCH CEO
