JWT Experts in Berlin
in minutes with vetted freelancers and AI precisionHire experts who design secure login flows, issue and validate JSON Web Tokens, and integrate JWT with OAuth 2.0, OpenID Connect, and API gateways. Get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used JWT
Aruldass Arulanandu
Last position:
Web Module Lead at Mphasis Limited
- Led the end-to-end delivery of enterprise full-stack web applications by driving requirement analysis, solution design, frontend and backend development, database design, API integration, code reviews, team coordination, Agile execution, CI/CD deployments, production support, performance optimization, security implementation, and stakeholder collaboration to deliver scalable, high-quality software solutions.
Imran Ali
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.
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.
Ibrahim Hilali
Last position:
Senior Full Stack / AI Engineer at Punktum Digital GmbH
- Context: Healthcare and laboratory teams required faster document analysis, treatment-planning support, and reliable AI workflows for MR/VR-assisted operations.
- Contribution: Built the AI healthcare platform, model/agent workflows, VR-glasses deployment platform, REST APIs, Next.js/React interfaces, and CI/CD pipelines.
- Impact: Delivered a production-ready AI product foundation that improved clinical document review, supported laboratory automation, and made VR fleet deployment manageable across environments.
Tech: TypeScript, Next.js, Node.js, React, Java, Spring Boot, Python, PyTorch, TensorFlow, Docker, PostgreSQL, OpenAPI, GitLab, GitHub Actions.
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
Julien Look
Last position:
MLOps Engineer at SAMGEN
- Building and scaling cloud infrastructure on GCP to support a SaaS platform for industrial clients
- Designing and implementing a data-driven DevOps pipeline for streamlined deployment and CI/CD workflows
- Collaborating with Data Science team on MLOps workflow to automate integrated retraining
Daniel Stopp
Last position:
Frontend and Web Developer at Datalyze Solutions
- Frontend development and implementation of various designs (landing pages, overview pages)
- Responsible for the content and updates of the Datalyze Solutions company website
- Joint planning and development of an admin application for listing and locating real estate projects (CBRE)
- Joint planning and development of extensive solutions for automatic staff allocation in plants (Bosch)
- Backend development of various small projects with different stacks
- Tech stack: GitLab CI/CD, Elixir, Phoenix Framework, Ecto, PostgreSQL, Docker, Hetzner, Traefik, NGINX, Python, Flask, Next.js/React, Leaflet, GeoServer, TypeScript, MongoDB
Max Degterev
Last position:
Tech Lead, Interim CTO/CPO at MatchDispatch
I worked on automating cold outreach.
- Developed a queue architecture to support the parallel execution of large volumes of background tasks.
- Integrated multiple email delivery providers.
- Implemented an LLM-based data enrichment process.
Technologies: TypeScript, React, Node.js, Next.js, Drizzle ORM, PostgreSQL, Next-Auth, JWT, Docker, Kubernetes, AWS, CloudFlare, Traefik, Groq, Jest, Figma
Christopher Mäuer
Last position:
Mobile & Full-Stack Engineer at Propstack GmbH
- Refactored the mobile app by reimplementing stores, models, API client, screens and components using Typescript
- Added performant on-device storage for stores as preparation for offline mode
- Integrated RNUILib to achieve a minimal and modern UI design quickly
- Implemented native packages to provide additional features such as displaying of caller IDs
- Planned feature development and UX improvements following initial refactoring and redesign
Ines Rahrah
Last position:
Entrepreneur at ZuManAsha
- Built and operated a successful handmade tray business sold via Etsy and Spock, fulfilling 120+ orders and maintaining 5-star customer reviews.
- Managed 100% of the operations including product design, international shipping, and marketing across Instagram, TikTok, and Etsy, growing a global customer base.
Kalpesh Patil
Last position:
Intern Java Developer at Unzer GmbH
- Developed a Proof of Concept for distributed tracing using OpenTelemetry within a microservices architecture, enhancing system observability and reducing mean-time-to-resolution for issues.
- Built and maintained backend services using Java and Spring Boot, ensuring high reliability and performance for payment transaction workflows.
- Implemented comprehensive automated testing with JUnit and Mockito, achieving 95% test coverage to ensure code quality and maintainability.
- Gained insight into payment transaction workflows, validating end-to-end system reliability and gaining domain knowledge in financial processes.
- Tech used: Java, Spring Boot, Microservices, REST API, Kafka, Grafana, Datadog, Docker, MongoDB
Smit Kevadiya
Last position:
Software Engineer (Backend & API Lead) at Surpeats
- Backend & API architecture: Independently architected a scalable Node.js backend and RESTful API to handle a high volume of transactions, ensuring robust data management for users, restaurants, and administrators.
- Microservices & infrastructure: Engineered a sophisticated database architecture using PostgreSQL with geographic query optimization. Designed and deployed a robust infrastructure with three separate microservice servers and a database server.
- Performance & scalability: Implemented Redis caching and performed SQL query optimization to improve application performance and reduce load on the database, enhancing responsiveness for real-time services.
- Security & authentication: Integrated secure payment processing via Razorpay and implemented robust middleware for JWT authentication to ensure secure transactions and data integrity.
- CI/CD & deployment: Established a robust CI/CD pipeline using Docker and GitHub Actions for automated and reliable deployment, showcasing fluency in modern DevOps practices.
Sanju Barla
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 Ahmad
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
Henning Petersen
Last position:
Backend Systems Development at Deutsche Bank/DWS/Morgenfund
- Developed backend systems for the DWS Investment App, a white-label investment solution (robo-advisor), and an investment solution for institutional clients.
- Java 8-17, Kotlin, Spring Boot, Spring MVC, OpenAPI 3.0, JPA, JDBI, Oracle, Hazelcast, JXLS, Apache POI, Apache PDFBox, Apache Kafka & Avro, Active MQ, Elasticsearch, React Native, Spock Test, IntelliJ IDEA, Kubernetes, Helm, Microservices/Netflix-Stack, TeamCity, Splunk.
- Kanban team, continuous integration.
- Migrated existing applications from Deutsche Bank's private cloud environment to Azure as part of a carve-out.
Discover over 15,000 top freelancers
Statistics of experts using JWT
Aggregated from the professional profiles of matched freelancers.
Experience
12 years (Germany: 17 years)
Position duration
1.8 years (Germany: 2.7 years)
Positions per freelancer
8 (Germany: 13)
Top business areas
Product Development, Information Technology, Quality Assurance
Top industries
Information Technology, Banking and Finance, Manufacturing
Certification focus areas
Information Technology, Legal, Marketing
Bachelor's degree or higher
93% (Germany: 86%)
Master's degree or higher
36% (Germany: 51%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
German, English, Arabic
Speak two or more languages
100% (Germany: 98%)
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 JWT
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
Token basics
JWT, short for JSON Web Token, is a compact way to pass claims between systems. It is often used for authentication, session handling, and API access. Strong experts know when JWT is the right fit and when server-side sessions are safer.
Common uses
- Login and single sign-on flows
- API authorization and bearer tokens
- Service-to-service identity checks
- Mobile and web app session claims
Teams in Berlin often use JWT in product platforms, internal tools, and distributed services where clear token exchange matters.
Ecosystem fit
JWT rarely stands alone. It is usually paired with OAuth 2.0, OpenID Connect, and identity providers such as Keycloak, Auth0, or Microsoft Entra ID. Professionals also work with public key signing, refresh tokens, and gateway rules.
What good experts do
A strong JWT specialist can define claim structure, choose signing algorithms, and set token lifetimes without breaking user experience. They also check issuer, audience, and expiry logic, then test rotation and revocation paths. That work keeps auth predictable across apps and services.
When to bring in help
Bring in freelance support when auth flows fail, token handling is inconsistent, or a new API layer needs a secure design. Companies also call in specialists during migrations from sessions to JWT, or when a Berlin product team needs remote help on an existing stack. Clear documentation and careful review are part of the job.
Delivery and quality
Good delivery includes working code, test coverage, and clear notes on how tokens are issued, validated, and refreshed. Ask for experience with your framework, your identity setup, and your deployment model. The best professionals leave security decisions easy to maintain and hard to misuse.
Frequently asked questions
What clients ask us most about JWT — answered in short.
JWT is used to carry claims between a client and a service in a compact signed token. Companies use it for login, API access, and single sign-on flows. It is common in web apps, mobile apps, and microservice setups where stateless auth is useful.
A JSON Web Token keeps identity data in the token itself, while classic sessions keep state on the server. That makes JWT easier to scale across services, but it also raises questions about revocation and token lifetime. Strong specialists know when sessions are the better choice.
A good JWT specialist usually understands OAuth 2.0, OpenID Connect, key rotation, and secure API design. Familiarity with identity providers such as Keycloak or Auth0 also helps. They should be able to work with your framework and gateway setup, not just the token format.
Bring in JWT expertise when login behavior is unstable, tokens are being accepted or rejected incorrectly, or an app is moving to a new auth model. It also helps during security reviews and when multiple services need a shared token strategy. External support is useful if the team needs a clean design fast.
Yes, JWT work is well suited to remote collaboration because the main deliverables are code, config, and clear security rules. Berlin teams often combine on-site product discussions with remote implementation work. The key is good access to your identity flow, staging systems, and review process.
JWT is often compared with server-side sessions, opaque access tokens, and SAML in enterprise identity setups. Each option solves a different problem, so the right choice depends on your architecture and security needs. A strong specialist can explain the trade-offs in plain terms.
Look for someone who can explain signing, validation, expiry, and refresh logic without hand-waving. A strong JWT professional also adds tests, documents claim rules, and avoids storing sensitive data in tokens. Ask for examples that show secure integration, not just basic token creation.
A solid JWT implementation includes clear claim design, safe key management, strict issuer and audience checks, and a refresh strategy. It should also handle logout, rotation, and edge cases across clients and services. Good work is easy to maintain and hard to break.
The average hourly rate of freelancers in Berlin, Germany who have used JWT in their recent projects is 63 €, which corresponds to a daily rate of about 508 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used JWT in their recent projects, 93% hold at least a Bachelor's degree and 36% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used JWT in their recent projects have 12 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Berlin, Germany who have used JWT in their recent projects are German (100%), English (100%), and Arabic (13%).
The most common industries among freelancers in Berlin, Germany who have used JWT in their recent projects are Information Technology (93%), Banking and Finance (60%), and Manufacturing (40%).
The most common business areas among freelancers in Berlin, Germany who have used JWT in their recent projects are Product Development (100%), Information Technology (93%), and Quality Assurance (60%).
Main locations of FRATCH Experts, who have recently used JWT
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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Philipp Thomaschewski
FRATCH CEO
