API Gateway Expert in Berlin
to secure and scale your services with fast, precise AI matchingHire experts who design API management layers, configure routing and authentication, and connect microservices across cloud and hybrid environments. FRATCH matches you quickly with vetted, available freelancers whose experience fits your project.
Meet FRATCH Experts in Berlin, who have recently used API Gateway
Jorge P.
Last position:
Software Engineer – AWS and Kubernetes Specialist at Citti
- Creation, maintenance and hardening of Kubernetes clusters employing Ansible and ArgoCD
- Keywords: Ansible, AWX, Kubernetes, NetApp, Prometheus, CI/CD ArgoCD, SSO, Fluent-bit, HAProxy, Calico, Keycloak, oauth2-proxy, SealedSecrets, kubeseal, Aqua kube-bench, CIS-Benchmarks, Aqua Trivy operator
Marina K.
Last position:
Independent Software Developer at LILARAUM
- Independently designed, developed, published, and maintained mobile games for iOS and Android.
- Implemented application architecture, gameplay systems, UI, monetization, analytics, and platform integrations.
- Managed the complete release lifecycle, including testing, store publication, production monitoring, and iterative improvements based on analytics.
Unnikuttan V.
Last position:
Managing Director (Co-Founder) at AathmaSignals
- Spearheading investor outreach and partnership development as founding MD, building the business case and technical narrative needed to attract initial funding and strategic collaborators in the digital health space
- Designing multi-agent AI systems for autonomous biosignal analysis, orchestrating LLM-based reasoning pipelines with domain-specific medical context to enable intelligent, clinical decision support
Qaiser A.
Last position:
Freelance Lead DevOps Engineer at Schwarz Gruppe Produktion
Bootstrapping a CloudOps team and building a multi-cloud provider backend for a low-code Internal Developer Platform (IDP) with env zero
Introducing user story mapping, ADRs, milestones, and backlog management
Designing and developing core APIs, setting up CI/CD pipelines, OpenTofu/Terraform scripts
Representing and communicating the team with third-party stakeholders (e.g. env zero)
(Cross-)team coaching on DevOps, software design, Terraform, Golang, and agile practices
Vili D.
Last position:
Technical Lead, Data Engineer at Mercedes-Benz Consulting
- Optimized the data architecture (medallion) to better decouple processing stages and improve transparency and reproducibility
- Ensured technical quality of data processing in Databricks by introducing schema enforcement, data quality checks and a structured data architecture
- Orchestrated pipelines with Azure Data Factory
- Professionalized and automated the development and deployment process by integrating Git and GitHub Actions
- Led the Data Engineering team (3 members) in a functional role
- Conducted workshops to optimize and stabilize the data platform and the development process
- Collected and prioritized new requests, maintained the product backlog
- Technologies: Microsoft Azure (Data Lake, Data Factory), Databricks, Apache Spark (PySpark), Python, SQL, Git, Confluence, Power BI, Power Apps, Dataverse, MS SharePoint, Mural
Fady K.
Last position:
Senior Software Developer / Tech Lead at Specific Objects Technologies GmbH
- Project 1: Multi-Tenant SaaS Platform: Data Integration & Pricing Management
- Objective: New development of ELT pipeline (replacement for Java 6 legacy), integration of heterogeneous source systems (CSV, Excel, Email, external DBs), event-sourcing for complete auditability, multi-tenant architecture for tenant-capable data processing
- Challenge: Processing millions of records daily, audit compliance, data isolation between different tenants
- Solution: Stakeholder workshops for requirements analysis, event-driven architecture with Axon Framework and Apache Kafka, AWS services (EC2, S3, Lambda, SQS, API Gateway) for cloud integration, PostgreSQL with tenant-specific schemas for multi-tenant data isolation, REST API design with Spring Boot for external system integrations, comprehensive testing strategy (JUnit, Spring Test, Postman, PACT, ArchUnit)
- Results: ELT performance improved from 30+ min to 1-5 min; 2-3 hours daily saved through workflow automation; 10-20 hours/week saved through event-sourcing auditability; 100% audit compliance; secure multi-tenant data isolation for 10+ tenants
- Project 2: Multi-tenant CRM System Modernization
- Objective: Migration of CRM system (20+ years PHP/MySQL) to Java microservices, Domain-Driven Design implementation, establishment of Test-Driven Development, multi-tenant-capable SaaS architecture for multiple customer tenants
- Challenge: Remodeling complex business logic, no existing test culture, scalable tenant management with data isolation
- Solution: Comprehensive testing strategy (JUnit, Spring Test, Postman, PACT, ArchUnit), multi-tenant architecture with tenant-specific databases, REST API design with Spring Boot for cross-tenant integration, Kubernetes and Docker for container orchestration
- Results: 2× performance improvement; deployment time reduced from 40+ min to 5-7 min; migration without production outages; scalable multi-tenant solution for 15+ customer tenants
- Technologies: Java, Spring Boot 3.x, Angular, Apache Kafka, AWS (EC2, S3, Lambda, SQS, API Gateway), PostgreSQL, Axon Framework, Kubernetes, Docker, GitLab CI, REST API
Tino T.
Last position:
Director Technology at Forte Digital Germany
- Leading 20+ staff in development, site reliability engineering, and architecture.
- Leading the group-wide agentic AI initiative (Norway, Poland, Germany).
- Hands-on solution architect and AI consultant for over 50% of my working time on client projects in the publishing sector – from local publishers to international corporations.
- Strategic consulting and technical implementation of AI workflow platforms (n8n, Workato).
- Developing prototypes for traditional, AI-based, and agentic AI workflows.
Khaled M.
Last position:
Senior/Staff Backend Engineer at Heycar (Mobility Trader GmbH)
- Heycar is a leading automotive platform redefining the used car market through intelligent data pipelines, multi-tenant services, and dealer-focused tooling. I led initiatives across backend architecture, data ingestion, and identity management to enhance scalability, reliability, and developer productivity.
- Ingestion Platform: Designed a unified ingestion platform with YAML-based configuration, enabling new dealer data pipelines to be onboarded without code changes, cutting setup time from ~2 months to 2-3 days and improving scalability by 40%.
- Keycloak Leadership: Acted as the company's Keycloak expert, scaling it for multi-tenant identity management and extending functionality with custom plugins and delegated admin APIs.
- Back-Office Tooling: Developed a back-office application integrated with Salesforce, enabling dealers to manage inventory, convert leads, and handle support requests in real time.
- Multi-Tenant Migration: Collaborated across backend teams to migrate Heycar's core services into a unified multi-tenant cluster, ensuring high availability.
- Frontend CI Optimization: Optimized monorepo delivery by implementing CircleCI dynamic config with NX, deploying only affected UI projects and drastically cutting build times.
- Observability & Mentorship: Enhanced monitoring and release reliability while mentoring backend engineers and improving code review standards.
Sanju B.
Last position:
Portfolio for Content Management System (Flask, SQLAlchemy, Bootstrap)
- Created a CMS-driven portfolio app for showcasing projects with user authentication, CRUD operations, and Guest Mode.
- Designed and implemented full-stack architecture using Flask, SQLAlchemy, and Bootstrap 5.
- Integrated secure authentication and CSRF protection mechanisms.
- Deployed production-ready web app using Docker and Railway.
- Achieved full project cycle completion: design, development, testing, deployment, and documentation.
- Demonstrated Agile development principles and industry-standard software engineering practices.
Haseeb A.
Last position:
Full Stack Ruby on Rails Developer at FINLINK
- Delivered MVP for strategic enterprise client including core Links banking APIs and interest rate calculations
- Integrated German banking APIs for automated credit checks
- Built lead distribution system that improved sales team efficiency by 40%
- Developed microservices architecture for mortgage offer generation from multiple banks
- Automated document verification process for customer KYC and income validation
- Implemented GDPR-compliant consent management for customer data protection
- Deployed and managed services using Kubernetes with custom YAML configurations
- Wrote comprehensive test coverage using Rspec ensuring code reliability
- Reduced customer onboarding time by 30% through workflow optimization
Discover over 15,000 top freelancers
Statistics of experts using API Gateway
Aggregated from the professional profiles of matched freelancers.
Experience
15 years (Germany: 16 years)
Position duration
2.7 years (Germany: 2.3 years)
Positions per freelancer
8 (Germany: 11)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Automotive, Education
Certification focus areas
Information Technology, Product Development, Quality Assurance
Bachelor's degree or higher
100% (Germany: 96%)
Master's degree or higher
60% (Germany: 61%)
Doctorate
10% (Germany: 8%)
Certifications per freelancer
3
Most common languages
German, English, Hindi
Speak two or more languages
100% (Germany: 99%)
Based on our profile pool as of 19 Sep 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Berlin are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Berlin 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 19 Sep 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%)
- Automotive (50%)
- Education (40%)
- Banking and Finance (40%)
- Media and Entertainment (30%)
- Aerospace and Defense (20%)
- Insurance (20%)
- Transportation (20%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What API Gateways Do
An API Gateway is the controlled entry point between clients and backend services. It routes requests, applies authentication and authorization, transforms payloads, and presents consistent APIs to web, mobile, partner, and internal consumers. It can also centralize rate limits, caching, observability, and error handling.
Where They Fit
API Gateways are common in microservice platforms, mobile backends, partner integrations, and event-driven systems. They help teams expose services without revealing internal topology and give product teams one place to manage cross-cutting API policies.
- Route traffic to services by path, host, method, or version
- Protect endpoints with OAuth 2.0, JWT, API keys, or mTLS
- Apply throttling, quotas, caching, and request validation
- Aggregate responses for mobile and frontend clients
Ecosystem And Tooling
The right specialist may work with managed services such as AWS API Gateway, Azure API Management, or Google Cloud API Gateway. Open-source and self-managed options include Kong, Tyk, and NGINX. Related tooling often covers OpenAPI, Kubernetes Ingress, service meshes, Terraform, CI/CD pipelines, and centralized monitoring.
When Companies Need Help
Companies usually bring in freelance expertise during a microservices migration, a cloud move, or a redesign of their public API. Support is also valuable when gateway rules have become inconsistent, latency is difficult to trace, or security policies must be applied across many teams. In Berlin, specialists may need to align remote delivery with on-site workshops and distributed product teams.
- Replace direct service exposure with a governed entry layer
- Standardize authentication and API lifecycle policies
- Diagnose routing, timeout, latency, and deployment issues
- Create reusable gateway configuration through infrastructure as code
Skills That Matter
Strong professionals understand HTTP, REST, JSON, TLS, DNS, and network behavior as well as the gateway product itself. They can model APIs with OpenAPI, integrate identity providers, and connect gateway policies to Kubernetes or cloud networking. They also understand logging, tracing, metrics, resilience patterns, and safe versioning.
What Good Delivery Looks Like
Quality work produces clear routes, least-privilege access, predictable failure behavior, and documentation that other teams can use. A capable expert tests policy changes, measures the effect on downstream services, and keeps configuration reviewable and reproducible. They explain trade-offs between a managed gateway, Kong, NGINX, and a service mesh instead of treating every request as a gateway problem.
Frequently asked questions
Before you brief your next project: the most common questions about API Gateway.
An API Gateway receives client requests and forwards them to the right backend services. It can handle authentication, rate limiting, TLS termination, request transformation, caching, and observability at a shared boundary.
An API Gateway usually works at a richer application-policy level than a basic load balancer or reverse proxy. It can route by API version, validate tokens, transform messages, enforce quotas, and aggregate responses, while load balancers mainly distribute traffic and reverse proxies focus on forwarding and connection handling.
An API Gateway specialist should understand HTTP, REST, OpenAPI, TLS, DNS, identity providers, and network security. Kubernetes, Terraform, cloud networking, CI/CD, logging, tracing, and service-mesh concepts are also valuable when the gateway sits in a distributed platform.
The right API Gateway experience depends on the scope, not a fixed number of years. A simple route and authentication setup may need focused product knowledge, while a multi-cloud migration or high-risk public API requires proven work with security, resilience, observability, and staged rollout plans.
Yes, API Gateway work is often suitable for remote collaboration because configuration, testing, and documentation are managed in shared repositories and pipelines. Berlin-based companies may still prefer on-site workshops for architecture decisions, incident reviews, or close coordination with security and platform teams.
Ask an API Gateway specialist to explain routing, identity, failure handling, and rollout decisions from a comparable project. Review configuration quality, automated tests, OpenAPI documentation, monitoring coverage, and how clearly they separate gateway responsibilities from application or service-mesh concerns.
Kong suits teams seeking an extensible gateway they can run across environments, while Apigee emphasizes enterprise API management and product governance. AWS API Gateway is a natural fit for services already centered on AWS, but the choice should also consider traffic patterns, portability, team skills, policy needs, and operational ownership.
An API Gateway is useful when clients need a stable entry point or when shared controls must be centralized. It is not a cure for every integration problem: internal service-to-service traffic may be better handled directly or through a service mesh, and an unnecessary gateway can add latency, coupling, and operational complexity.
The average hourly rate of freelancers in Berlin, Germany who have used API Gateway in their recent projects is 86 €, which corresponds to a daily rate of about 684 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used API Gateway in their recent projects, 100% hold at least a Bachelor's degree, 60% hold at least a Master's degree, and 10% hold a doctorate.
On average, freelancers in Berlin, Germany who have used API Gateway in their recent projects have 15 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Berlin, Germany who have used API Gateway in their recent projects are German (100%), English (100%), and Hindi (20%).
The most common industries among freelancers in Berlin, Germany who have used API Gateway in their recent projects are Information Technology (100%), Automotive (50%), and Education (40%).
The most common business areas among freelancers in Berlin, Germany who have used API Gateway in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (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.
Munich 
Cologne 
Frankfurt Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
