Single Sign-On Experts in Berlin
in minutes from over 15,000 CVs with the power of AI.Hire experts who design SSO flows, connect SAML and OpenID Connect, and integrate identity providers like Keycloak, Okta, or Microsoft Entra ID. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used Single Sign-On
Maarten Van Der Most
Last position:
Managing Director at House of Code
- Led the end-to-end transformation of a 125+-person development organization, driving full operational integration into the Aviv Group within nine months
- Overhauled finance, HR, IT, and facilities by establishing scalable frameworks and modern governance models
- Introduced structured budgeting and cashflow processes, job leveling, and compensation frameworks to build transparency, accountability, and sustainable growth
- Implemented complete financial restructuring with a strategic budgeting process aligned to group objectives
- Re-engineered and operationalized HR functions, establishing modern talent management and organizational development processes
- Formalized nearshore vendor management by fully integrating partners and processes into Aviv Group’s operational framework
- Scaled IT infrastructure and support capabilities, significantly extending helpdesk services
- Instituted clear on-call and overtime regulations for nearshore partners to enhance service reliability and cost predictability
- Directed facilities and real estate management to ensure productive and efficient work environments
- Achieved a cohesive and accountable subsidiary fully aligned with Aviv’s strategy
Julius Herrera Glomm
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
Abhiroop Basu
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.
Marcus Brose
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 Rietzler
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 Raab
Last position:
Sabbatical with Training at Own Sabbatical
Mario Jelinski
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 Ogu
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 Kazarnovskiy
Last position:
Freelance Software Developer
Ottavio Braun
Last position:
Semantic Test Framework for LLMs
Tobias Jaeuthe
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
Jorge Pérez Suárez
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
Tino Truppel
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.
Marcus Kühl
Last position:
Senior Software Developer (APEX) at Various
- Further development and tuning of a medium-sized application for managing events and participants
- Identification of bottlenecks
- Adding missing foreign keys and indexes
- Reprogramming views and SQL queries in APEX
- Report development with Jasper Reports
- Mentoring other APEX developers
Gyan Prakash
Last position:
Senior DevOps and Cloud Architect at Bosch
- Architected and operated cloud-based data and ML platforms for autonomous driving and parking systems, supporting large-scale (multi PB scale) simulation and vehicle data ingestion.
- Implemented security, compliance, and governance standards across Azure subscriptions and cloud resources.
- Managed GitHub organizations and CI/CD pipelines to improve deployment reliability and developer productivity.
- Contributed to hiring and technical interviews as part of the recruitment panel.
Discover over 15,000 top freelancers
Statistics of experts using Single Sign-On
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 19 years)
Position duration
2.2 years (Germany: 2.3 years)
Positions per freelancer
11 (Germany: 13)
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
88% (Germany: 85%)
Master's degree or higher
47% (Germany: 40%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Spanish
Speak two or more languages
95%
Based on our profile pool as of 30 Aug 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 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
SSO basics
Single Sign-On lets one login cover many tools, apps, and portals. It cuts repeated sign-ins and gives users one secure entry point across internal systems, customer portals, and partner access. It is common in SaaS, finance, healthcare, and enterprise IT.
Common setups
- SAML for enterprise login flows
- OpenID Connect for modern web and mobile apps
- OAuth 2.0 for delegated access
- Identity provider integration with Okta, Microsoft Entra ID, or Keycloak
- Role-based access and session handling
What experts deliver
A strong SSO specialist maps identity flow, claims, and session rules to the real application landscape. They set up login, logout, token exchange, and account linking so users move between systems without friction. They also work on audit trails, access policies, and edge cases such as first login or account recovery.
When to bring one in
Companies usually bring in freelance expertise when an old login flow needs to be replaced, a new app must join the identity stack, or user access has become hard to manage. In Berlin, this often comes up in product teams, B2B SaaS, and larger internal IT environments that need clean handover across remote and on-site work. SSO changes touch security, UX, and operations at once.
Skills that matter
Strong professionals understand identity standards, app security, and how the surrounding stack behaves.
- SAML assertions, metadata, and certificates
- OpenID Connect, JWTs, and refresh tokens
- Directory sync and user provisioning
- Session management and logout behavior
- Troubleshooting across browsers, apps, and gateways
Signs of quality
Good SSO experts do more than connect a button to a login page. They can explain why a flow works, document the trust setup, and spot risks around token lifetime, redirect handling, and misaligned claims. They also keep the implementation simple enough for support teams to maintain after launch.
Frequently asked questions
The facts hiring teams ask for most often when it comes to Single Sign-On.
Single Sign-On is used to let a person log in once and reach several apps without repeating credentials. Companies use it for staff portals, customer-facing products, partner access, and internal tools that need a shared identity layer. It is most useful when many systems must feel like one secure environment.
SSO is the user experience goal, while SAML, OpenID Connect, and OAuth 2.0 are the protocols that often make it work. In many projects, OpenID Connect is chosen for modern apps and SAML for enterprise integrations. A good specialist knows when each option fits the application and identity provider setup.
A strong Single Sign-On setup often involves Keycloak, Okta, Microsoft Entra ID, or other identity providers. The work usually also touches SAML metadata, OpenID Connect client settings, directory services, and user provisioning. The right mix depends on how the company already manages accounts and access.
A good SSO specialist should also understand app security, session handling, and basic infrastructure around reverse proxies, load balancers, and certificates. They need to read logs, trace redirects, and spot broken claims or mismatched identifiers. Clear documentation is also important, because identity setups are hard to support when the flow is unclear.
Single Sign-On work can be small, but it is rarely trivial. Even a simple integration needs someone who has handled identity provider configuration, certificate trust, and logout behavior before. Larger migrations or multi-app rollouts benefit from a specialist who has already dealt with edge cases and support handover.
Single Sign-On projects are often done remotely because most work happens in configuration, testing, and documentation. On-site time in Berlin can help when the team needs fast decisions across security, product, and operations, but it is not always required. Many specialists can collaborate well through shared test environments and screen reviews.
Look for a Single Sign-On expert who can explain the trust model in plain words and show how login, token, and logout flows fit together. Good signs are clean documentation, careful handling of certificates and claims, and a clear plan for testing failure cases. Ask how they have handled broken redirects, account linking, or migration from an older login setup.
SSO reduces password fatigue and makes access easier across many systems. It also gives companies a better way to centralize user access, remove access when someone leaves, and apply one identity policy across different apps. That is why it is often chosen when teams outgrow separate logins for every service.
The average hourly rate of freelancers in Berlin, Germany who have used Single Sign-On in their recent projects is 100 €, which corresponds to a daily rate of about 800 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Single Sign-On in their recent projects, 88% hold at least a Bachelor's degree and 47% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used Single Sign-On in their recent projects have 18 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 (95%), and Spanish (14%).
The most common industries among freelancers in Berlin, Germany who have used Single Sign-On in their recent projects are Information Technology (95%), Banking and Finance (50%), and Education (45%).
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 (91%), and Operations (55%).
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
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
