Single Sign-On Experts in Berlin
matched in minutes from over 15,000 CVs with the power of AIHire experts who integrate SSO with cloud applications, identity providers and directory services, while securing authentication flows and access policies. Get fast, precise matches with vetted, available freelancers for your project.
Meet FRATCH Experts in Berlin, who have recently used Single Sign-On
Julius H.
Last position:
Freelancer at Freelancer — Pharma Industry
- Led migration to GCP using Terraform, GKE, and GitOps, improving deployment consistency and scalability
- Implemented Datadog observability stack via Terraform and datadog-operator
- Established automated end-to-end tests and on-call processes, improving incident response and service reliability
- Migrated from NGINX Ingress Controller to Kubernetes Gateway API (NGINX Gateway Fabric)
- Migrated stateful services (PostgreSQL and Redis) to GCP, improving scalability and operational reliability
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
Abhiroop B.
Last position:
Software Engineer III at Foundry Digital
- Developed and deployed microservices in Kotlin and Spring Boot, integrated AWS Secrets Manager to secure credentials and decreased network calls using Spring cache.
- Refactored Kafka consumer using Spring Kafka with semaphore-based backpressure to cap records and keep heap memory stable under spikes; switched to batch upserts to cut down on database invocations; added Testcontainers integration tests for Kafka and database to pave the way for future changes.
- Automated the financial reconciliation workflow in Spring Boot (Kotlin) using Spring Scheduler, transactional boundaries, JPA/Hibernate on MySQL, and Flyway migrations, saving the accounts team 16+ hours per week.
- Designed and dockerized payments end-to-end test framework in Robot (Python) with reusable keyword libraries and profiles; integrated with GitLab CI (JaCoCo XML and HTML reports) to accelerate releases and lift code coverage to 80%.
- Implemented end-to-end observability on Datadog by instrumenting services with Datadog APM, correlating metrics and logs, provisioning dashboards, and creating monitors with burn-rate alerts and anomalies to harden reliability and give stakeholders clear visibility.
Raj U.
Last position:
Courier / Operations Support at Closer Go Germany GmbH
- Work within time-critical operating procedures; coordinate issues with customers, partners and central support.
- Maintain reliable handovers and concise incident communication when service, equipment or routing issues occur.
Marcus B.
Last position:
Alpecin.de - Dr. Wolff Group
- Development of a component library based on a design system for several international brands such as Alpecin, Karex, Linola and Plantur 39
- Integration of headless CMS, PIM and commerce solutions
- UI/UX development
- Prototype development
- MVP development
- API design and development
- SaaS development (whitelabel/multi-tenant)
- Headless CMS integration
- Design systems Digital signage
- Internationalization (i18n)
- Javascript
- Component library
- Tailwind CSS
- Storybook
- HTML
- Vue 3
- Storyblok
- Github Actions
- SEO
- i18n Theming
- React
Alois R.
Last position:
Senior Fullstack Developer at brandung GmbH
- Opt-in RAG extension over tenant-owned data sources (SharePoint, Confluence) on existing multi-tenant enterprise AI platform
- Architecture: ADRs, solution evaluations, permission strategy, cost modeling
- End-to-end SharePoint and Confluence connectors: OAuth consent flows, token refresh, metadata sync, search integration
- Permission resolution: ACL indexing at ingestion and query-time verification (document-level security)
- Elasticsearch hybrid search (semantic + keyword) with RRF scoring
- RAG chat with context injection and source citations
- Stack: Elastic Cloud, Elasticsearch, Docker, Northflank, Next.js, React, TypeScript, Prisma, Microsoft Graph API, Atlassian REST API, OAuth 2.0
Ursula R.
Last position:
Sabbatical with Training at Own Sabbatical
Mario J.
Last position:
Architect / Developer at handyhase
- Overhaul of the entire design and implementation of new UI/UX aspects using React
- Planning of the software architecture and structuring of the project for long-term scalability using Git for version control
Chiemela O.
Last position:
AI Enthusiast – Independent Projects at Chiemela Ogu Consulting
Too Good To Throw (AI powered social impact webapp focused on reducing food waste in Nigeria):
Integrated Paystack Split Payments to automatically route payments between the platform and partner vendors.
Configured automated subaccount creation workflows so new businesses get a settlement account instantly.
Setup a scalable cloud backend using Supabase.
Implemented role-based access control (RBAC) for Users, Partners, and Admin.
FaithFlow (AI powered webapp supporting Christian teens on their spiritual journey):
Designed and implemented an AI-driven scripture search engine that interprets natural language questions and maps them to relevant Bible texts, commentary, devotionals, and cross-references.
Designed a spiritual growth dashboard enabling users to track reading progress, prayer streaks, and devotional completion milestones.
Igor K.
Last position:
Freelance Software Developer
Karthikeyan R.
Last position:
Full-Stack Developer — Own Product at Self-employed
Java 21 · Spring Boot 3 · Keycloak · PostgreSQL · Docker · Nginx · GitHub Actions · DigitalOcean · React 18 · TypeScript · Plasmo
- Architected and shipped a production-ready Job Application Tracker end-to-end: REST API with 5-stage workflow, pagination, sorting, and dynamic filtering — full ownership from design to live cloud deployment on DigitalOcean.
- Implemented production-grade identity management: OAuth 2.0 / OpenID Connect / JWT / RBAC via Keycloak, applying Hexagonal Architecture and DDD principles.
- Built automated CI/CD pipeline (GitHub Actions); containerised with Docker; Nginx reverse proxy with path-based routing and SSL termination.
- Developed a Chrome Extension (Plasmo framework, Manifest V3) that auto-fills job applications directly from LinkedIn into the tracker — demonstrates full product thinking across backend API and browser client.
Ottavio B.
Last position:
Semantic Test Framework for LLMs
Tobias J.
Last position:
Design of an AI-Agent-Based ERP System
- Design of an LLM-based agent system to control the ERP software
- Development of agent workflows with LangGraph and PydanticAI
- Planning interfaces between business logic and language models
- Planning agent orchestration
- Prototype development and demonstration
Tools: Python, Pydantic, React, LangChain, LangGraph, Linux
Albrecht N.
Last position:
Senior Project Manager IT at HAYS Technology Solutions GmbH
- Leasing, lifecycle and process management for Apple iPhones, maintenance and expansion of the MDM system, coordination of leasing, device integration into DEP and MDM, followed by a rollout and hardware swap process, plus a BYOD and Android option
- Migration of the IT ticket system from ManageEngine ServiceDesk Plus to Atlassian Jira Service Management: project management, definition of ticket types, seamless execution according to a detailed timeline, user communication, decommissioning of the old system
- Project lead: SAP interface in workforce management to automate reading of working hours
- Sub-project lead for inventory software EZO AssetSonar: demand management, software selection, procurement
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.
Discover over 15,000 top freelancers
Statistics of experts using Single Sign-On
Aggregated from the professional profiles of matched freelancers.
Experience
16 years (Germany: 19 years)
Position duration
2.2 years (Germany: 2.3 years)
Positions per freelancer
10 (Germany: 12)
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Banking and Finance, Education
Certification focus areas
Information Technology, Project Management, Human Resources
Bachelor's degree or higher
89% (Germany: 85%)
Master's degree or higher
42% (Germany: 41%)
Certifications per freelancer
2 (Germany: 4)
Most common languages
German, English, Spanish
Speak two or more languages
96% (Germany: 95%)
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 Single Sign-On
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.
Single Sign-On 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 (96%)
- Banking and Finance (54%)
- Education (46%)
- Retail (42%)
- Media and Entertainment (38%)
- Automotive (33%)
- Healthcare (29%)
- Telecommunication (29%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Single Sign-On does
Single Sign-On, commonly called SSO, lets people access several applications after authenticating once with a trusted identity provider. It centralizes login, reduces repeated password prompts and gives companies a consistent way to manage access across cloud, web and internal systems. Strong implementations balance convenience with clear security controls.
Core protocols
SSO projects commonly use SAML 2.0 for browser-based enterprise access, OpenID Connect for modern applications and OAuth 2.0 for delegated authorization. Experts work with identity providers such as Microsoft Entra ID, Okta, Google Cloud Identity and Keycloak, plus directories based on Active Directory or LDAP. They map claims, groups, roles and session rules between connected services.
Typical deliverables
- Configure an identity provider and connect SaaS applications
- Implement SAML or OpenID Connect login flows
- Map attributes, groups and role-based access rules
- Add single logout, session controls and recovery paths
- Document onboarding, troubleshooting and ownership processes
A complete delivery also covers application registration, certificate handling, redirect settings and carefully tested error states. The result should be repeatable across environments and understandable to the teams that operate it.
When companies need expertise
Companies often bring in freelance specialists during cloud migrations, application rollouts, directory consolidation or security improvements. Signs include duplicated user accounts, manual access requests, inconsistent offboarding or applications that cannot share a reliable identity source. Berlin-based organizations may also value professionals who can work on-site when workshops require it, while remote delivery remains practical for configuration and testing.
Skills beyond login
Effective SSO work connects identity with application security and daily operations. Professionals should understand user provisioning, SCIM, MFA, conditional access, least-privilege design, audit logging and secrets management. Familiarity with REST APIs, browser behavior, certificates, DNS and common SaaS administration helps them diagnose failures that sit outside the identity provider itself.
What quality looks like
A strong professional starts with an inventory of applications, users, roles and trust relationships rather than enabling a generic connector. They define ownership, test claims and access boundaries, plan rollback steps and verify joiner, mover and leaver scenarios. Clear documentation matters as much as a successful login, especially when several teams maintain the connected systems. For Berlin projects, language expectations and collaboration habits should be agreed before workshops begin.
Frequently asked questions
The facts hiring teams ask for most often when it comes to Single Sign-On.
Single Sign-On lets a user authenticate with one trusted identity provider and then access connected applications without logging in separately to each one. Companies use SSO to simplify access, centralize account policies and support faster onboarding and offboarding.
SSO moves authentication to a central identity provider, while a password manager stores or fills credentials for separate accounts. SSO usually gives the company stronger control over access and offboarding, but it also makes identity-provider availability and configuration especially important.
A capable Single Sign-On specialist should also understand SAML, OpenID Connect, OAuth 2.0, SCIM, MFA and role-based access. Experience with Microsoft Entra ID, Okta, Keycloak, Active Directory, LDAP, REST APIs and certificate management is useful when integrations cross several systems.
The right level depends on the application landscape and risk. A straightforward SaaS connection may need focused configuration skills, while a multi-provider migration requires a professional who can design trust relationships, claims, provisioning, recovery and rollback plans.
Single Sign-On projects can usually be delivered remotely through shared configuration sessions, secure documentation and structured testing. For teams in Berlin, on-site workshops can still help when application owners, security teams and business stakeholders need to agree on access rules together.
Before adopting SSO for an application, confirm its supported protocols, user identifier, group or role mapping, logout behavior and provisioning options. Review certificate rotation, admin recovery, audit logs and the effect of an identity-provider outage before approving the design.
Look for a clear integration plan, tested claims and roles, documented ownership and evidence that onboarding, changes, offboarding and failed logins were tested. A strong SSO professional explains trade-offs plainly and avoids granting broad access just to make an integration work.
Freelancers working with Single Sign-On should expect coordination with security, application and directory owners. They need disciplined handling of certificates and secrets, careful separation of environments and clear documentation so the client can operate the integration after handover.
The average hourly rate of freelancers in Berlin, Germany who have used Single Sign-On in their recent projects is 97 €, which corresponds to a daily rate of about 775 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Single Sign-On in their recent projects, 89% hold at least a Bachelor's degree and 42% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used Single Sign-On in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Berlin, Germany who have used Single Sign-On in their recent projects are German (100%), English (96%), and Spanish (13%).
The most common industries among freelancers in Berlin, Germany who have used Single Sign-On in their recent projects are Information Technology (96%), Banking and Finance (54%), and Education (46%).
The most common business areas among freelancers in Berlin, Germany who have used Single Sign-On in their recent projects are Information Technology (100%), Product Development (83%), and Operations (58%).
Main locations of FRATCH Experts, who have recently used Single Sign-On
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.
Hamburg 
Munich 
Cologne 
Frankfurt Request a free demo
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Philipp Thomaschewski
FRATCH CEO
