quebi

Founder & Managing Director

Max Schurig

Mathematician in Science and Engineering

Software engineer and entrepreneur building scalable, user-focused web applications and business tools. Experienced in cloud-native architectures, real-time collaboration, and complex planning systems.

Currently leading quebi GmbH, developing modern B2B software with React Router, PostgreSQL, Cloudflare Workers, and collaborative frameworks. Combines hands-on full-stack development, product ownership, and scalable system design to deliver reliable solutions.

Experience

Career Timeline

Oct 2025Present|Bayrischzell

Founder & Managing Director

quebi GmbH

Founder and hands-on software developer building innovative business tools and web applications, with a focus on B2B software products and scalable web services.

Key contributions / focus:

  • Leading the development of web-based software tools, ERPs, and contract development projects, handling both strategic and technical responsibilities
  • Built a scalable, cloud-based WYSIWYG editor for scientific writing (marktex.app) with live collaboration using Lexical, Yjs, WebSockets, and Durable Objects, including cloud-based LaTeX compilation
  • Implemented a modern, fully cloud-native architecture using React Router, PostgreSQL/Drizzle, Auth0, and Cloudflare (Workers/D1/R2/Containers/Queues) with CI/CD pipelines
  • Managing a small founding team, sharing responsibilities across development, client interactions, and business strategy
  • Developing a smart POS software for cellphone stores that recommends plans and hardware based on customer needs while optimizing for shop goals
  • Focused on building user-centric, highly reliable software with scalability on cloud PaaS
React RouterPostgreSQL/DrizzleAuth0Cloudflare Workers/D1/R2/Queues/ContainersYjsWebSocketsCI/CD (GitHub Actions)
Feb 2024Present|Munich

Software Engineer

Sunny Systems GmbH

Full-stack engineer responsible for the development, maintenance, and evolution of multiple mission-critical internal and client-facing applications in a small agile team.

Key contributions:

  • Took full ownership of the rail planning tool (formerly a freelance project), maintaining and extending its complex real-time scheduling system for multi-user operational use
  • Developed and maintained a client/project/order management tool using React, Laravel, and MySQL, transitioning it from legacy PHP to a modern full-stack architecture and improving operational reliability
  • Contributed to the design and ongoing development of a cloud-hosted ERP platform for real estate agencies, including React frontend, Go backend, CI/CD pipelines, and collaboration features for hundreds of expected users
  • Participated actively in architectural and design decisions across all projects, including performance optimization, real-time updates, and automated notifications
  • Coordinated closely with team members in a flat agile setup, ensuring smooth delivery of new features and rapid response to issues
  • Directly liaised with clients and management, presenting features, gathering requirements, and providing accurate development time estimates
  • Maintained long-term business relationships through consistent, reliable delivery and proactive communication
ReactTypeScriptGoPostgreSQL/MySQLWebSocketsDockerCI/CD (GitHub Actions)Cloud & On-Premise Deployment
Oct 2023Present|Munich

Promotion (Dr. rer. nat.)

Technische Universität München

Thesis: High gradient problems in additive manufacturing (ongoing)

Key contributions / focus:

  • Developing novel nonlinear finite element solvers and adaptive time integrators to improve performance, accuracy, and robustness for transient solutions of nonlinear PDEs
  • Implemented custom solver frameworks in MATLAB, Python (NumPy, SciPy), and C++/CUDA, including GPU and multi-threaded optimizations
  • Benchmarked and validated new approaches against established tools (FEniCSx, FreeFEM++, MFEM, MATLAB PDE Toolbox), achieving performance gains of several orders of magnitude on regular grids
  • Created visualization pipelines for volumetric 3D data using MATLAB, Matplotlib, and ParaView
  • Combining rigorous numerical methods with real-world application, bridging method development and additive manufacturing problem-solving
  • Publications in preparation, including “Overcoming the artifact problem of high gradient cooling in additive manufacturing”
MATLABPython (NumPy, SciPy, Matplotlib)C++/CUDAParaViewFinite Element MethodsAdaptive Time Integration
Jun 2021Jan 2024|Munich

Software Engineer (Freelancer)

RailAdventure GmbH

Freelance software engineer responsible for initiating, specifying, and delivering a custom, mission-critical planning system for rail operations.

Key contributions:

  • Initiated and pitched the replacement of a business-critical Excel-based disposition workflow with a custom software solution
  • Led requirements discovery with disposition, maintenance, and sales teams to design a domain-specific planning and resource management system
  • Designed and implemented a complex real-time web application for rail scheduling, resource allocation, and maintenance planning
  • Built a graphical planning interface with advanced drag-and-drop interactions, conflict detection, and constraint enforcement
  • Implemented live multi-user updates via WebSockets, ensuring a single source of truth for 24/7 operational use
  • Introduced role-based access control, SSO, audit logging, and export functionality to meet operational and compliance needs
  • Scaled development by coordinating a small team of developers while retaining architectural and product ownership
  • Deployed and operated the system on-premise
  • Rolled out the application through user training and onboarding, enabling a smooth transition for a critical operational change
ReactTypeScriptPostgreSQLWebSocketsKonva.jsGitHub ActionsOn-Premise Deployment
Aug 2019Aug 2023|Munich

Project Manager & Digital Transformation Officer

Nelhiebel Elektrotechnik GmbH

Started as a Working Student and progressed to Project Manager and Digital Transformation Officer, leading client projects and company-wide process digitization in an electrical engineering firm focused on e-mobility infrastructure.

Key contributions:

  • Led end-to-end execution of e-mobility infrastructure projects, coordinating internal teams, contractors, and external stakeholders
  • Managed parallel short-cycle projects, ensuring on-time delivery under tight execution windows
  • Designed and implemented digital project management workflows, improving transparency, coordination, and execution speed
  • Built a digital product catalog with automated quotation and project cost calculation, reducing manual effort and error rates
  • Developed internal helper tools for standards-compliant electrical design, improving planning quality and consistency
  • Introduced company-wide digital infrastructure (wiki, cloud storage, digital forms, data transfer interfaces) to replace fragmented manual processes
  • Supported management in client acquisition, proposal preparation, and strategic repositioning toward larger-scale B2B projects
PDS (ERP)Caneco (CAD)JavaScript (Google Apps Script)Google Cloud
Oct 2018Oct 2020|Munich

M.Sc. Mathematics in Science and Engineering

Technische Universität München

Thesis: Time simulation of High Thermal Gradient Problems in Additive Manufacturing (1.0)

Oct 2014Jul 2018|Munich

B.Sc. Mathematik, NF: Experimentalphysik

Ludwig-Maximilians-Universität

Thesis: Maße auf topologischen Räumen (2.0)

Projects

Selected Work

KlarTeX

Cloud-based WYSIWYG editor for scientific writing with live collaboration and LaTeX compilation.

Key features:

  • Real-time collaborative editing using Yjs and WebSockets
  • Cloud-based LaTeX compilation for scientific documents
  • Scalable architecture on Cloudflare Workers and Durable Objects
  • Modern, user-centric interface for academic writing
React RouterTypeScriptLexicalYjsWebSocketsCloudflare WorkersDurable Objects

Cellestial

Smart POS Software for cellphone stores, recommending plans/hardware to customers based on their needs while watching out for making deals and reaching goals of the shop owner.

Key features:

  • Global scale using cloudflare workers/DO
  • Highly cost efficient by almost scaling to zero cost during the night / on days off
TypeScriptHonoCloudflare WorkersReactVite

Rail Planning Tool

Mission-critical planning system for rail operations, replacing a business-critical Excel-based disposition workflow.

Key features:

  • Real-time web application for rail scheduling, resource allocation, and maintenance planning
  • Graphical planning interface with drag-and-drop interactions, conflict detection, and constraint enforcement
  • Live multi-user updates via WebSockets
  • Role-based access control, SSO, audit logging, and export functionality
  • On-premise deployment with CI/CD pipelines
ReactTypeScriptPostgreSQLWebSocketsKonva.jsGitHub Actions

Order Management System

Client/project/order management tool for a rail company, providing operational oversight and coordination across departments.

Key features:

  • Full-stack application transitioning from legacy PHP to modern React architecture
  • Interoperability with the Rail Planning Tool for seamless data exchange
  • Order tracking, client management, and project coordination
  • Improved operational reliability and workflow transparency
ReactTypeScriptLaravelMySQLDocker

Skills

Technical Expertise

Languages

TypeScriptGoPythonC#C++SQL

Frontend

ReactReact RouterKonva.jsThree.jsWebSocketsYjsLexical

Backend & Infra

PostgreSQLDrizzle ORMMySQLCloudflare Workers/Containers/QueuesCloudflare D1/R2Auth0

DevOps & Tools

GitGitHub ActionsDockerCI/CDOn-Premise Deployment

Scientific Computing

MATLABNumPy/SciPyCUDAFinite Element MethodsLinear AlgebraIntegrators