OpenID Connect Expert in Berlin
for secure identity flows, matched in minutes with vetted and available freelancersHire experts who design identity architectures, integrate OIDC with OAuth 2.0 providers and secure web, mobile and API access. FRATCH matches you quickly and precisely with vetted freelancers who are available for your project.
Meet FRATCH Experts in Berlin, who have recently used OpenID Connect
Imran A.
Last position:
Software Engineer II at LivePerson Germany GmbH
- Led development of 15+ microservices (Java 17, Spring Boot) driving customer interactions; migrated from on-prem to GCP Kubernetes, improving scalability and reducing infra cost by 20%.
- Optimized user services with CouchDB caching and API refactoring, cutting response times by 35% and enhancing customer experience.
- Implemented canary deployments, FluxCD GitOps, and CI/CD optimizations in GitLab, reducing release lead time by 25% and enabling zero-downtime rollouts.
- Set up Grafana health checks and Anodot alerts for latency, error, and throughput monitoring, reducing MTTR by 40%.
- Built secure APIs using OAuth2, DPoP, and Gatekeeper, integrated REST and GraphQL, and achieved 90%+ test coverage with unit and E2E tests.
- Mentored junior developers, promoted Agile best practices, and collaborated cross-functionally to deliver high-impact, reliable customer-facing features.
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
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.
Ola V.
Last position:
IT Lecturer
- IT training in theory and practice for IT specialists in application development and system integration
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
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
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.
Olaf N.
Last position:
Frontend Engineer at Danaher/Hach Lange GmbH
- Developed a SolidJS frontend UI for a spectrometric water analysis system on an ARM-based embedded Linux platform
- Prototyped UI in TypeScript React/Nx with LitElements and MQTT integration
- Built production UI using SolidJS, SUID, i18next, Ajv, MQTT.js, C3.js
- Refined requirements with UX team and water analysis system engineers
- Defined and documented system architecture, MQTT message formats, frontend architecture, and development setup
- Set up frontend system from scratch, implemented domain-oriented type system, UI components, and application state
- Managed MQTT pub/sub services and schema-based message validation in frontend
- Coached two junior frontend developers
- Worked in an agile remote team using JIRA, Git, and Bitbucket
Aadityavelava V.
Last position:
Senior Product Manager – Checkout & Cloud Identity at SCAYLE (ABOUT YOU Group)
- Defined the headless Checkout product strategy (APIs, contracts, extensibility) and roadmap; partnered with Engineering/SecOps to refactor and harden the platform for externalization.
- Aligned MDs/C-level on a multi-quarter roadmap, business cases, and success metrics (conversion, time-to-launch for partners, incident rate, SLA adherence).
- Chaired cross-functional planning (multiple PMs and squads); ran RICE prioritization and capacity planning for the unit; sequenced dependencies across Frontend, Payments, Platform, and Security.
- Rolled out a multi-tenant OIDC Identity Provider (SSO, RBAC, tenant isolation, data reuse) and integrated it with Checkout and partner apps; reduced login friction and support escalations.
- Established a governed Rules Engine (eligibility, promotions, shipping and payment rules, compliance guards) with versioning, safe rollouts, and clear ownership across teams.
Robert H.
Last position:
Senior Software Engineer at Zalando SE
Discover over 15,000 top freelancers
Statistics of experts using OpenID Connect
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 20 years)
Position duration
1.7 years (Germany: 1.9 years)
Positions per freelancer
13 (Germany: 14)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Manufacturing, Banking and Finance
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
89% (Germany: 86%)
Master's degree or higher
56% (Germany: 50%)
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, French
Speak two or more languages
100% (Germany: 94%)
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 Berlin 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 Berlin using OpenID Connect
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.
OpenID Connect 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%)
- Manufacturing (54%)
- Banking and Finance (46%)
- Retail (46%)
- Education (38%)
- Automotive (31%)
- Healthcare (31%)
- Media and Entertainment (31%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
Identity layer
OpenID Connect, commonly called OIDC, is an identity layer built on top of OAuth 2.0. It lets an application verify who a user is and receive standardized identity claims through an ID token, while OAuth access tokens control access to APIs. Companies use it for reliable sign-in across web apps, mobile apps and service portals.
Core flows
OIDC specialists choose flows based on the client type, threat model and user journey. Authorization Code with PKCE is common for browser and mobile clients, while backend services may use confidential clients and token exchange patterns. Strong implementations validate issuer, audience, signature, nonce, state and token expiry rather than trusting received claims blindly.
Ecosystem and tooling
The technology connects applications to identity providers and enterprise directories through well-defined discovery and endpoint conventions.
- Configure authorization, token, user info and logout endpoints
- Integrate providers such as Keycloak, Auth0, Microsoft Entra ID and Okta
- Map scopes and claims to application roles and permissions
- Test redirects, consent, refresh tokens and signing-key rotation
Typical delivery
Freelance specialists often deliver an OIDC integration, a provider migration or a shared single sign-on layer for several products. Their work can include client registration, callback handling, session design, claims mapping, API gateway integration and documentation. In Berlin, this expertise is relevant to companies operating SaaS products, digital services and distributed enterprise systems.
When to bring expertise
External support helps when authentication touches several products, identity providers or compliance-sensitive workflows. Look for specialist help when login failures are difficult to trace, tokens contain inconsistent claims, a legacy OpenID implementation needs replacement or teams are moving from custom sessions to standards-based identity.
- Multiple applications need one controlled sign-in experience
- A provider change could disrupt users or partner access
- Security reviews uncover weak token or redirect handling
- Product teams need a repeatable identity integration pattern
Quality signals
Strong professionals understand both protocol details and the application context around them. They can explain the difference between authentication and authorization, keep tokens out of unsafe storage, enforce exact redirect URI policies and design useful failure handling. They also test key rotation, logout behavior, clock differences, consent changes and claims from every connected provider. Clear diagrams and runbooks make the result maintainable for remote or on-site teams.
Frequently asked questions
What clients ask us most about OpenID Connect — answered in short.
OpenID Connect is used to add standardized user authentication to applications through an identity provider. It supports single sign-on, account creation, profile claims and controlled access to APIs when combined with OAuth 2.0.
OIDC adds an identity layer to OAuth 2.0. OAuth defines delegated access to resources, while OIDC defines how an application verifies the user and receives identity information, usually through an ID token.
OpenID Connect uses OAuth 2.0 and JSON-based tokens, making it a natural fit for modern web, mobile and API applications. SAML remains common in enterprise single sign-on, so the right choice depends on existing providers, application types and integration constraints.
A strong OpenID Connect specialist should also understand OAuth 2.0, JWT validation, TLS, browser sessions, API gateways and identity providers such as Keycloak or Microsoft Entra ID. Knowledge of directory services, role mapping and application security helps connect protocol decisions to business access rules.
The needed depth depends on the scope. A single provider integration may need focused protocol and application knowledge, while a multi-tenant migration, federated identity setup or shared sign-on service requires experience with threat modeling, provider differences, rollout planning and production troubleshooting.
OpenID Connect projects can be handled remotely when teams document redirect URIs, environments, claims and ownership of identity-provider settings clearly. For Berlin-based companies, on-site workshops may still help with architecture and security reviews, while implementation and testing can remain distributed.
Ask the OIDC professional to explain authorization code flow with PKCE, token validation and the difference between an ID token and an access token. Review how they handle key rotation, redirect attacks, logout, failed consent and provider-specific claims, not only whether a login screen works.
An OpenID Connect freelancer should typically provide the integration, configuration notes, test coverage and a clear security rationale. Useful handover material includes sequence diagrams, claim mappings, environment settings, incident guidance and instructions for rotating keys or changing providers.
The average hourly rate of freelancers in Berlin, Germany who have used OpenID Connect in their recent projects is 90 €, which corresponds to a daily rate of about 724 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used OpenID Connect in their recent projects, 89% hold at least a Bachelor's degree and 56% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used OpenID Connect in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Berlin, Germany who have used OpenID Connect in their recent projects are German (100%), English (100%), and French (15%).
The most common industries among freelancers in Berlin, Germany who have used OpenID Connect in their recent projects are Information Technology (100%), Manufacturing (54%), and Banking and Finance (46%).
The most common business areas among freelancers in Berlin, Germany who have used OpenID Connect in their recent projects are Information Technology (100%), Product Development (92%), and Project Management (69%).
Main locations of FRATCH Experts, who have recently used OpenID Connect
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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Munich 
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Philipp Thomaschewski
FRATCH CEO
