React Native Experts in Munich

Alexandru G.

Head of Cloud Infrastructure

Last position:

Principal Cloud DevOps Architect at BP

In my role as Senior Cloud DevOps Architect for BP, an oil and gas company, I had the mission to migrate the Electric Vehicle Charging platform of the EV Division from on-premises and Azure to AWS cloud, resulting in a hybrid multi-cloud, multi-tenant SaaS solution.

Deployment with Kubernetes for the application layer meant provisioning Kubernetes clusters managed by EKS and AKS, with a focus on integrating them into a multi-tenant environment. This integration was achieved by using Kubernetes namespaces and access controls to ensure data isolation and privacy enforcement.

In the database layer, we chose an RDS instance with PostgreSQL to support the backend infrastructure of our applications. Tenants shared the same RDS instance, but each had a dedicated schema.

To ingest near real-time data from physical charge points (CPOs), as IoT devices, via the OCPI protocol, we ran into significant delays with batch processing. As a result, we built a real-time streaming data pipeline using Apache Kafka, while prioritizing an event-driven architecture.

Led collaboration across multiple internal teams, external vendors, cloud providers, and on-site partners to integrate over five systems into a unified solution.

Achievements:

Successfully designed and implemented hybrid multi-cloud solutions, integrating multiple cloud platforms (AWS, Azure) with on-premises infrastructure, using Site-to-Site VPNs, Firewalls, and Load Balancing.
Led the migration of on-premises infrastructure to multi-cloud, multi-tenant infrastructure, resulting in 30% faster processing times.
Migrated workloads from VMware and Hyper-V environments to cloud-based VMs, leveraging cloud-native services to optimize performance, cost efficiency, and scalability.
Designed a multi-tenant Kubernetes platform leveraging the Kubernetes ecosystem, using Karpenter for dynamic EC2 node provisioning, KEDA for event-driven pod autoscaling (e.g., Kafka message lag), and Rancher for centralized monitoring of multiple clusters (EKS, AKS, or on-prem K8s), replacing Microsoft-centric Azure Arc management service.
Designed and implemented Python-based FastAPI microservices as part of the EV core-backend on AWS EKS application layer, powering data ingestion and customer analytics pipelines.
Developed asynchronous, event-driven APIs (Python-FastAPI) for real-time integration with CPOs, supporting OCPI 2.3 and OICP protocols.
Designed and implemented a secure, production-grade Azure Databricks platform using Terraform, ensuring scalability and cost efficiency.
Migrated on-premises ERP to a hybrid Dynamics 365 architecture with ERP hosted locally and CRM running in Azure, integrated via Azure Arc.
Automated CI/CD pipelines for Databricks notebooks and jobs using GitHub Actions & Databricks CLI, reducing deployment time. Reduced infrastructure provisioning time by 70% by automating cloud resource deployment with GitOps.
Ensured compliance with internal audit and data governance standards (GDPR) through OAuth2/OIDC-based authentication and fine-grained role-based access controls.
Developed a Zero Trust security model, enforcing least-privilege access and microsegmentation, enhancing security posture and compliance with GDPR and NIST.
Built interactive analytics dashboards in Amazon QuickSight, integrating data from S3 and Redshift to deliver real-time business insights and visualizations with embedded access for multi-tenant users.
Led cloud security assessments and full-lifecycle cybersecurity integration during M&A, covering AWS, Azure, IAM (Entra ID), and data protection, while aligning security posture with NIST, ISO 27001, and GDPR across hybrid and cloud-native environments.
Reduced cloud costs by 64% for a client's dev environment by implementing automated start/stop schedules for EC2 and RDS instances via AWS CDK with EventBridge Scheduler or AWS Systems Manager.

Tech stack:

Infrastructure as Code: Terraform, AWS CDK, Ansible.
Containers: Kubernetes on EKS, AKS, Docker.
Streaming Data Processing: Kafka to Confluent Cloud, after AWS MSK.
Frontend: TypeScript, React, NextJS, Hooks, Styled Components.
Backend: Python with FastAPI, also Node.js with NestJS.
Database: Aurora on PostgreSQL with TypeORM, RDS on SQL Server, Azure Databricks full setup and administration, ETL Pipelines.
CI/CD and GitOps: GitHub Actions, Azure DevOps, ArgoCD.
Monitoring and Observability: Prometheus and Grafana.
Virtualization: Hyper-V, VMware Cloud on AWS, Azure Migrate.
ERP Systems: Odoo, Microsoft Dynamics 365 Business Central on Azure, integrated with Azure Arc.
Networking: Site-to-Site VPNs, AWS Direct Connect, Azure ExpressRoute, Firewalls (AWS Network Firewall, Azure Firewall).
Security: IAM, NIST Framework, Zero Trust Security, AWS WAF, AWS Shield, GuardDuty.

Matthias L.

Freelance Developer & Founder

Last position:

Full Stack & AI Engineer at Elephant Technologies

Loom and Bloom

Python · TypeScript · n8n · Claude Code · Whisper · Gemini · Supabase · Notion · HubSpot · Digital Ocean

Built an end-to-end content pipeline: one Loom video → marketing images, bilingual LinkedIn posts, newsletter and Help Center updates.
n8n webhook → SSH → Claude Code session on a Digital Ocean VPS; three MCP servers (video, Notion, Supabase).
Whisper word-level transcription, ffmpeg screenshots, Gemini UI annotation, PIL device mockups.
Next.js upload UI plus a bilingual newsletter composer with HubSpot push.

Heidi A.

Venture Developer in Product Design

Last position:

Venture Developer in Product Design at TUM Venture Labs

Taught German language and mathematics to children aged 4-16, providing homework assistance and tutoring
Supported startups in UX, MVP development, and Lean Startup methodology
Assisted with branding, communication, and design to strengthen market presence
Maintained website and Venture Lab app; coordinated and ran events
Developed presentations to support internal and external communications

Wolfgang O.

Head of Business Development DSS & Digital Ventures

Eching

Last position:

Head of Business Development DSS & Digital Ventures at Krauss Maffei Technologies GmbH

Group-wide responsibility for developing new business models, strategic support of corporate start-ups and managing equity in start-ups
Direct management of 3 employees
Direct reporting line to executive management
Business Development: designing and building an information platform on the global machine base and customer sales/margins in the aftersales area based on SAP data, supporting sales planning as part of the budget, advising project teams on profitability calculations
Digital Ventures: defining terms, developing processes to generate and develop new business models, operational validation of new business models to expand the group's business areas, strategic support of project teams in implementing new business models, cooperation project with Munich University of Applied Sciences, steering and supporting equity investments in start-ups

Roxana G.

Freelance Senior Frontend Developer

Last position:

Freelance Senior Frontend Developer at RHI Magnesita

Designed and developed a high-performance internal resource management platform using React and TypeScript, optimizing dynamic data rendering and state management.
Built a React Native application to support mobile access to internal tools, enabling on-the-go project tracking for field teams.
Developed custom 2D canvas-based visualizations using Pixi.js to simulate material flows and refractory layer behaviors.
Integrated Pixi.js with React components for interactive diagrams and real-time UI updates.
Developed interactive 3D visualizations using React.js for displaying refractory product layouts and simulations, supporting engineering and sales teams with dynamic product previews.
Integrated Three.js within the React ecosystem to allow manipulation of 3D models in real-time via browser, enhancing user engagement and field configurability.
Integrated a headless CMS to enable dynamic content updates by non-technical users, reducing content deployment time by 40%.
Led AWS CloudFront optimization initiatives, improving portal load speeds by 30% globally.
Actively collaborated with cross-functional Agile teams and product owners to deliver prioritized features with a fast feedback loop.
Key Technologies: React.js, React Native, Three.js, TypeScript, Contentful CMS, AWS S3/Lambda/CloudFront, Cypress, Agile Scrum

Michael B.

Scrum Master, Project Manager

Last position:

Scrum Master, Project Manager at GP Solutions DMCC

Participated in the Riyadh Public Transport (KAPT) project introducing public transportation in Riyadh, supporting multimodal journeys combining bus, metro, car on demand.
Worked via Thiqah and partnered with Andersen to refactor the mobile MaaS application DARB into a new microservices architecture under SCRUM framework, successfully completing Phase 1.
Facilitated a team of 40 developers across Android, iOS, Web, Java, DevOps, architecture, analysis, and QA.
Moderated Scrum events and communicated with the client, proactively reporting on project deadlines, scope, and challenges.
Coordinated cross-team efforts between Thiqah specialists and GPS development teams, managing Jira and Azure DevOps trackers.
Supported and improved Scrum processes throughout the project.
Due to Thiqah’s takeover by Elm, subsequent phases were handled entirely in Saudi Arabia with GPS providing IT consulting.
Tools: Azure DevOps, Jira, Confluence, Draw.IO, ChatGPT

Nabil C.

Director of Product Management

Last position:

Director of Product Management at IZICAP

Product manager/ owner for the data, web and mobile teams (Java, REST API, Angular, React, Flutter)
Close collaboration with the executive team (CPO & CTO) to help them make decisions by representing the product voice
Managed sprints in an agile workflow (SCRUM & Kanban) including sprint planning, reviews, retrospectives and backlog management for two teams, covering requirements and ticket grooming/estimation
Moderation of SCRUM meetings
Wrote epics and user stories in close collaboration with engineering team leads, translating business requirements into technical user stories
Definition and execution on OKRs
Designed, built and hired a product structure of eight individuals, including product managers, a UI/UX designer and a product analyst
Results: increased offer activation rate eightfold.

Kaan K.

Computer Vision Engineer

Last position:

Computer Vision Engineer at Axulus Reply GmbH

Computer vision engineer responsible for development of industrial vision solutions, beginning as a working student and transitioning to a full-time role in May 2025.
Designed and implemented vehicle detection and counting models; integrated the pipeline into a cloud-deployed system (Azure) that delivers live analytics dashboards.
Building an offline print quality assurance system that scans corrugated-board prints on production lines to detect and classify defects such as splashes, impurities and colour deviations, deploying the solution on Jetson edge devices.
Collaborated with cross-functional teams while focusing on computer vision components, containerization, and deployment.

Nicole B.

Product Lead

Last position:

Product Lead at myterial GmbH

Prepared and accompanied the launch of the product with a team of 5 full-stack developers and 1 UX/UI designer
Defined the product roadmap, conducted market research, and analyzed user feedback to drive product discovery and ideation
Managed the product development process in a Scrum framework, ensuring the product met business goals
Oversaw recruitment of an internal PM, a tech lead, and a UX/UI designer by creating user cases and conducting interviews
Collaborated closely with cross-functional teams to ensure product success
Technology: web-app based on Nuxt.js, Strapi, and Nest.js
Team size: 5 full-stack developers, 1 UX/UI designer

Christoph N.

Interim CTO eCommerce

Last position:

Technical Advisor at Leximate

Set up AI-first Legal-Tech platform using latest LLM models and agentic development workflows.
Launched MVP in under 5 days from idea to code.
Setup AI-first development workflows "from call to shipped feature".

Jewgenij S.

Mobile Engineer

Last position:

Mobile Engineer at ginlo.net Gesellschaft für Datenkommunikation mbH

Development of the ginlo Messenger client, emphasizing stringent data protection compliance as mandated by German legislation.

Sarah H.

UI/UX Designer, Frontend Developer

Last position:

UI/UX Designer, Frontend Developer at Freelancer

Provided German services for diverse clients
Executed recent English projects for Sport Bründl, Haigh’s, Chiemsee Media
Delivered services in French and Spanish

Ilian S.

Project Manager

Last position:

Project Manager at AutoScout24 GmbH

Successfully migrated over 150 BI dashboards (Jira, Microstrategy, AWS QuickSight) as project lead of 4 developers, ensuring a smooth transition and maintaining data integrity.

Abdul K.

Software Engineer

Last position:

Software Engineer at EdgeFirm

Designed and developed end-to-end web and mobile products as a full-stack engineer, working across Python/FastAPI backends, databases, and React / React Native frontends.
Built LLM- and agentic-AI systems using LangChain, LangGraph, CrewAI, Langfuse, and vector databases, focusing on reliability, observability, and clean abstractions.
Developed a text-to-SQL assistant for the marketing team that lets non-technical users query a large retail-style dataset in natural language, returning clear analytics and campaign insights.
Helped reduce ad-hoc SQL/reporting requests to engineering by 60% and cut time-to-insight for common marketing queries from hours to minutes.
Created a full-stack mobile app where Apple Health data is processed and fed into an LLM to generate personalised, VO2-max–based health coaching and insights, owning architecture from frontend to backend and auth.

Fabian E.