Multi-Tenancy Expert in Berlin

Deepak M.

Lead ML Platform Engineer

Last position:

Lead ML Platform Engineer at Billie GmbH

Mentor team of 6 ML platform engineers through weekly 1:1s, technical design reviews, and best practices, improving team velocity by 35% through structured sprint planning and skill development programs
Define 2025–2026 ML platform roadmap in collaboration with Data Science, Cloud Engineering, and Product teams, prioritizing automated model governance, cost attribution systems, and multi-environment deployment strategies
Partner with Data Science, SRE, and Product stakeholders to align ML platform capabilities with business objectives, reducing data scientist deployment friction by 60% through self-service platforms
Architect and deliver production-grade MLOps platform supporting 50+ models in production with automated promotion pipelines, versioning, and rollback capabilities, achieving 99.5% platform uptime SLA
Design distributed ML pipeline architecture using Metaflow and Argo Workflows (Vertex Pipelines-compatible), reducing model training time by 30% and deployment cycles from 2 weeks to 3 days through full CI/CD automation
Build containerized ML services on Kubernetes with auto-scaling policies, resource quotas, and multi-tenancy isolation, optimizing infrastructure costs by $180K annually (25% reduction)
Implement monitoring, alerting, and performance tracking using Prometheus, Grafana, and custom instrumentation, reducing model debugging time by 50% and establishing model performance SLOs
Lead development of RAG-based document intelligence platform using LangChain, LangGraph, and vector databases, implementing agentic AI workflows for automated financial document processing
Implement Infrastructure-as-Code using Terraform for reproducible environment provisioning and GitOps workflows, reducing infrastructure drift incidents by 80%
Design role-based access control for ML platform, implement model lineage tracking, and establish audit trails for regulatory compliance aligned with enterprise IAM best practices

Benjamin F.

Freelance Product Manager, Product Owner, Scrum Master & Agile Coach

Last position:

Freelance Product Manager, Product Owner, Scrum Master & Agile Coach at Freelance

Freelance product owner, scrum master and agile coach in various projects spanning from local agencies to multinational corporations in diverse industries.
Last projects:
Adevinta: Technical Project Manager responsible for coordination of several sub-workstreams building the world’s largest classifieds multi-tenant platform.
Aroundhome (a ProSiebenSat.1 company): Product Manager implementing and verifying on the business side a concept for digital qualification of user requests for matching service providers.
Peek & Cloppenburg Düsseldorf: Product Manager Mobile advising on and guiding the rebuild of Android and iOS apps.
Visual Meta GmbH (an Axel Springer company), Berlin: Director Product co-leading the Product & Engineering department together with the Director Engineering.
Responsibilities at Visual Meta GmbH:
Define and deliver a 3–5 year horizon product strategy including a product vision & mission connecting to existing company strategy and strategies from adjacent departments.
Refine an existing OKR process together with OKR master and directors of other departments to increase focus and outcome.
Support the Director Engineering in creating a platform transformation strategy to transform a monolithic on-premise tech stack into a service-oriented, cloud-based architecture and establish a domain-based organizational setup.
Accountability for a motivated and talented team of 5 head-level colleagues and 17 operational team members from product management, data and UX/UI design.
Key achievements at Visual Meta GmbH:
Defined and delivered a 3–5 year horizon product strategy including a product vision & mission.
Increased focus within OKR process by moving from 10 company-level objectives to 2 and from several hundred team-level key results to a few dozen.
Created a career path framework for the product team defining roles and responsibilities from junior to head level positions.

Murad H.

Senior Software Engineer · Tech Lead · AI Engineer

Last position:

Founder & Technical Lead at Hubpoint.Ai

Founded an AI-powered scheduling and business-management SaaS for SMBs, owning technology strategy, architecture, product development, UX, billing and go-to-market execution.
Architected and shipped a multi-tenant platform with REST APIs, RBAC, CRM, billing and notifications, powering the manager dashboard, admin console, booking experience and iOS/Android applications.
Led and mentored 7 software engineers, 1 DevOps engineer, 1 QA engineer and 1 UX/UI designer, while remaining hands-on across backend, frontend and product delivery.
Built AI voice and chat agents using Python/FastAPI, OpenAI and Anthropic APIs, RAG, pgvector and tool calling; integrated Twilio, Google Calendar/Meet, Stripe and Firebase.
Owned production infrastructure and automated delivery across separate environments using Docker, Nginx, GitHub Actions and Grafana; represented the company at accelerators and international startup events.

Selected stack: Python, FastAPI, Node.js, Vue 3, React/Next.js, React Native, PostgreSQL, Redis, Docker

Ersin K.

Founder & Lead Architect

Schönefeld

Last position:

Founder & Lead Architect at ORBYNT / 7Style

Full automation of the software development process: ticket analysis → AI coding agents → pull request → automated code review → deployment
Multi-tenant architecture with 82 database models and real-time WebSocket monitoring
Integration of 40+ AI tools with Claude & GPT
Tech stack: React, TypeScript, Express.js, PostgreSQL, Redis, BullMQ
Platform in productive use with paying customers

Marcus B.

Vue / Nuxt / React / Typescript

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.

Senior Backend & Fullstack Developer

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

Sebastian S.

Group Product Manager – Digital Platform Discovery

Last position:

Group Product Manager – Digital Platform Discovery at SPREAD.AI

Developed and implemented organization-wide discovery framework based on Ulwick’s Outcome-Driven Innovation; enabled 7 Product Owners to systematically identify and quantify unrealized value through shared outcome language and opportunity scoring methodology
Transformed Product Owner role from backlog clerks to strategic experimenters; established dedicated time budget for autonomous hypothesis testing and discovery activities
Rebuilt customer journey maps to start at actual user need (tool selection phase) instead of platform entry point; eliminated manual data aggregation work previously done by project teams
Implemented OKR framework across 4 product teams; defined quarterly objectives with measurable key results (e.g., 40% reduction in manual integration effort, self-service adoption increase)
Unified 3 separate platform roadmaps through cross-team dependency mapping and shared service agreements
Supported enterprise sales cycle with ROI modeling and technical due diligence for automotive and defense customers

Ayodeji E.

Product Lead, Strategy and Operations

Last position:

Product Lead, Strategy and Operations at Skilladder AI

Engineered and delivered a full-stack assessment platform from prototype to production, now the company’s primary product, using AI tools to build a multi-tenant dashboard.
Cut assessment deployment time by 85% (from weeks to 24 hours) by building a template-based system with built-in scoring, proctoring, and participant management.
Grew platform adoption to 6 recurring enterprise clients by owning the full product lifecycle: research, requirements, design, and hands-on development.

Fady K.

Senior Software Developer / Tech Lead

Last position:

Senior Software Developer / Tech Lead at Specific Objects Technologies GmbH

Project 1: Multi-Tenant SaaS Platform: Data Integration & Pricing Management
Objective: New development of ELT pipeline (replacement for Java 6 legacy), integration of heterogeneous source systems (CSV, Excel, Email, external DBs), event-sourcing for complete auditability, multi-tenant architecture for tenant-capable data processing
Challenge: Processing millions of records daily, audit compliance, data isolation between different tenants
Solution: Stakeholder workshops for requirements analysis, event-driven architecture with Axon Framework and Apache Kafka, AWS services (EC2, S3, Lambda, SQS, API Gateway) for cloud integration, PostgreSQL with tenant-specific schemas for multi-tenant data isolation, REST API design with Spring Boot for external system integrations, comprehensive testing strategy (JUnit, Spring Test, Postman, PACT, ArchUnit)
Results: ELT performance improved from 30+ min to 1-5 min; 2-3 hours daily saved through workflow automation; 10-20 hours/week saved through event-sourcing auditability; 100% audit compliance; secure multi-tenant data isolation for 10+ tenants
Project 2: Multi-tenant CRM System Modernization
Objective: Migration of CRM system (20+ years PHP/MySQL) to Java microservices, Domain-Driven Design implementation, establishment of Test-Driven Development, multi-tenant-capable SaaS architecture for multiple customer tenants
Challenge: Remodeling complex business logic, no existing test culture, scalable tenant management with data isolation
Solution: Comprehensive testing strategy (JUnit, Spring Test, Postman, PACT, ArchUnit), multi-tenant architecture with tenant-specific databases, REST API design with Spring Boot for cross-tenant integration, Kubernetes and Docker for container orchestration
Results: 2× performance improvement; deployment time reduced from 40+ min to 5-7 min; migration without production outages; scalable multi-tenant solution for 15+ customer tenants
Technologies: Java, Spring Boot 3.x, Angular, Apache Kafka, AWS (EC2, S3, Lambda, SQS, API Gateway), PostgreSQL, Axon Framework, Kubernetes, Docker, GitLab CI, REST API

Matthias S.

Senior Security Consultant (freelance)

Panketal

Last position:

Senior Security Consultant (freelance) at DVZ M-V

ISMS and security concept for the Fabasoft e-file according to BSI 200-1/2, among others
Structural analysis (A.1), modeling (A.3), and baseline protection checks (A.4)
Preparation for OWASP penetration test, incident response plan, risk analysis
DevOps Bitbucket, ARC42, IAM with Keycloak/AD, multi-tenant setup, DMS, SOC
Emergency preparedness concept (BSI 200-4), operations and service concept (BSK), ITSM

Amogha S.

Senior Product Manager - OS, platform, IAM

Last position:

Senior Product Manager - OS, platform, IAM at Aleph Alpha GmbH

Leading the product lifecycle for sovereign AI platform and operating system teams for enterprise & government clients and internal stakeholders (infra, solution delivery, support, revenue)
Built and scaled the platform from a 200-user beta to a full rollout of 70K+ members at the Bundesagentur für Arbeit (BA), secured with ISO 42001 and EU AI Act compliance
Architected the shift to a multi-tenant shared inference, increasing GPU cluster utilization from 20% to 85% and reducing infrastructure cost-to-serve by 40% for SaaS clients
Shipped model quantization, allowing clients to run advanced LLMs on legacy hardware (A100s GPUs) instead of the H100s, saving upwards of 70% cost per enquiry
Abstracted complex Helm configurations into a dynamic model manager, reducing the time to install or swap models by ~80%
Killed an expensive move to build own dashboard service, pivoting to an API-first data strategy that clients can consume directly and saving €100Ks in opex and capex
Built a safety-first agent marketplace and control plane lighthouse project for a Tier-1 bank, allowing internal teams to deploy autonomous agents within strict regulatory guardrails

Michael F.

IT Consultant for Oracle Databases

Last position:

IT Consultant for Oracle Databases at Public Sector

Supporting the client in maintaining a custom monitoring solution for Oracle databases.

Khaled M.

Senior/Staff Backend Engineer

Last position:

Senior/Staff Backend Engineer at Heycar (Mobility Trader GmbH)

Heycar is a leading automotive platform redefining the used car market through intelligent data pipelines, multi-tenant services, and dealer-focused tooling. I led initiatives across backend architecture, data ingestion, and identity management to enhance scalability, reliability, and developer productivity.
Ingestion Platform: Designed a unified ingestion platform with YAML-based configuration, enabling new dealer data pipelines to be onboarded without code changes, cutting setup time from ~2 months to 2-3 days and improving scalability by 40%.
Keycloak Leadership: Acted as the company's Keycloak expert, scaling it for multi-tenant identity management and extending functionality with custom plugins and delegated admin APIs.
Back-Office Tooling: Developed a back-office application integrated with Salesforce, enabling dealers to manage inventory, convert leads, and handle support requests in real time.
Multi-Tenant Migration: Collaborated across backend teams to migrate Heycar's core services into a unified multi-tenant cluster, ensuring high availability.
Frontend CI Optimization: Optimized monorepo delivery by implementing CircleCI dynamic config with NX, deploying only affected UI projects and drastically cutting build times.
Observability & Mentorship: Enhanced monitoring and release reliability while mentoring backend engineers and improving code review standards.

Neil P.

Software Engineer

Last position:

Software Engineer at AKDB

Maintenance, enhancement, modernization, and testing of the OK.VERKEHR specialized application, a monolithic Enterprise Java solution (approx. 3.5 million LOC) for vehicle registration and driving license authorities
Design, development, testing and maintenance of end-to-end workflows (dialogs, backend services and persistence layer, test suite) for new driver's license applications, modifications/extensions of licenses, management of parking permits and truck driver cards
Development and maintenance of web services for communication between local road traffic authorities and the Federal Motor Transport Authority (Kraftfahrt-Bundesamt), FAER register, TÜV inspection centers and driving schools
Performance optimization and targeted refactoring for the future migration to a cloud architecture and addition of a new web client (Vaadin)
3rd-level support for customers in production

Valentin E.

B2B SaaS GTM & Growth Expert