ParaPy

What ParaPy does

ParaPy B.V. is a Dutch software company founded in 2016 and headquartered at the YES!Delft tech incubator in Delft, Netherlands. The company develops a Knowledge Based Engineering (KBE) platform built entirely in Python, which enables engineers to compose parametric, rule-based design applications without requiring a computer science background. Its core library uses a declarative, object-oriented architecture with automatic dependency tracking, result caching, and lazy evaluation, allowing engineers to build intelligent product models that regenerate geometry and downstream analysis outputs automatically when inputs change.

The platform is organized into specialized toolboxes covering parametric 3D geometry (150+ classes supporting IGES, STEP, STL, BREP, VRML, X3DOM), construction beam design, BIM interoperability via IFC and a Revit plug-in, automated meshing, solver-agnostic FEM structural analysis (MSC NASTRAN, ANSYS Mechanical, DIANA FEA, Code Aster, RFEM, Strand7), and CFD aerodynamic analysis (ANSYS Fluent and CFX, SU2, OpenFOAM, VSAERO, X-foil, AVL, FlightStream). User interface capabilities span a desktop GUI library and a WebGUI library enabling Python-only web interfaces built on React with Azure/Auth0 authentication. ParaPy Hub, released in June 2020, adds cloud deployment with Kubernetes-based auto-scaling across Azure, Google Cloud, and AWS, alongside packaging, security, and data management libraries.

ParaPy monetizes through commercial and academic software licenses on an annual subscription basis, joint application development services (free hackathons, 1-2 week pilot projects, longer continuous engagements), full-stack training programs covering KBE theory and professional software development, and tiered technical support. Distribution is sales-led and direct, targeting enterprise engineering buyers across aerospace and defense (GKN Fokker Aerostructures, Safran), energy and offshore (Aker Solutions), engineering consulting (Royal HaskoningDHV, TWD), manufacturing technology (MTC), transportation (Elemental airship), solar vehicle racing (Nuon/Vattenfall Solar Team), and academia (TU Delft). The annual KBE Challenge competition with TU Delft functions as a parallel ecosystem investment, training future KBE engineers and seeding enterprise customer relationships.

Name

ParaPy

Legal name

ParaPy B.V.

Website

https://parapy.nl

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

ParaPy is a Delft-based software company offering a Python-based Knowledge Based Engineering platform that enables engineers to build parametric, rule-based applications automating simulation-driven design for aerospace, AEC, energy, and academic customers.

Ownership category

akta.pro rank

Headquarters

HQ city

Delft

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. Software Licensing: Commercial and academic licenses for development and deployment of ParaPy applications. License types include development licenses and deployment licenses.
2. Professional Services - Training: Full-stack application development training including KBE theory, professional software development, and ParaPy platform libraries. Customized training programs for customer teams.
3. Professional Services - Joint Development: Joint application development projects where ParaPy developers work alongside customer teams. Includes hackathons (free 2-day), pilot projects (1-2 weeks), and continuous service agreements (longer-term).
4. Technical Support: Technical support services including product updates, email-based issue handling, web and phone support, online joint coding sessions with ParaPy experts.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

ParaPy provides a 100% Python-based Knowledge Based Engineering (KBE) platform that enables engineers to build parametric, rule-based software applications automating simulation-driven engineering design processes. The platform is delivered as a declarative Core Library with automatic dependency tracking, caching, and lazy evaluation, combined with modular toolboxes for geometry, meshing, FEM/CFD simulation, reporting, and desktop/web user interfaces. Customers consume the platform through commercial or academic licenses, supplemented by joint development services, training, technical support, and ParaPy Hub for cloud deployment on Kubernetes/Docker across Azure, Google Cloud, and AWS.

Product overview

ParaPy is a Knowledge Based Engineering platform that enables engineers to build automated design applications without requiring a computer science degree. The platform comprises a declarative Python-based Core Library providing dependency tracking, caching, and lazy evaluation, combined with specialized toolboxes for parametric 3D geometry (Geometry Package with 150+ operations), Construction modeling, and BIM support. The Simulation Toolbox covers automated meshing, FEM structural analysis (supporting MSC NASTRAN, ANSYS, Code Aster, Strand7, and others), and CFD aerodynamic analysis (supporting ANSYS Fluent, SU2, OpenFOAM, AVL, FlightStream, and others). User interface capabilities include Desktop GUI and WebGUI packages for creating desktop or web-based applications using only Python code. The Deployment Library provides Packaging, Security, and Data Management for cloud deployment. ParaPy Hub enables cloud-based scaling with OAuth authentication across Azure, Google Cloud, and AWS. Services include Joint Application Development, Training Programs, Licensing and Support, and the annual KBE Challenge student competition.

Differentiator

Problem solved

Functional benefit

Products and services

• ParaPy Platform The ParaPy Platform is a 100% Python-based Knowledge Based Engineering development environment sold under commercial and academic licenses to enterprise and academic engineering teams. It includes the declarative Core Library, the Modelling Toolbox (geometry, construction, BIM), the Simulation Toolbox (meshing, FEM, CFD), the Reporting Toolbox, the Desktop GUI and WebGUI packages, plus Productivity, Packaging, Data Management, and Security libraries for full application lifecycle support.
• ParaPy Hub ParaPy Hub is a cloud deployment and operations platform for running ParaPy design applications at scale, intended for enterprise engineering teams that need to serve many end users from a single secured, auto-scaling environment. It supports Kubernetes/Docker orchestration, OAuth-based authentication, workspace management, and deployment on Azure, Google Cloud, and AWS while keeping applications customer-owned and not host-locked to ParaPy servers.
• Joint Application Development Joint Application Development is a professional services offering in which ParaPy engineers collaborate with customer teams to build custom design automation applications on the ParaPy platform. Engagement modalities include free 2-day hackathons as proof-of-concept, 1-2 week pilot projects, and continuous service agreements for ongoing development, targeted at enterprise engineering teams that need a partner-led path to production-grade KBE applications.
• Training Program The Training Program is a customized enablement service covering full-stack application development with ParaPy: Knowledge Based Engineering theory, professional software development (Agile/Scrum, DevOps, Git), and the ParaPy platform libraries. It is targeted at customer engineering teams adopting ParaPy for the first time and is sold directly alongside commercial licenses.
• Licensing and Support Licensing and Support is ParaPy's annual subscription offering split into commercial licenses (for development and deployment of applications) and academic licenses (for research and educational use), bundled with technical support, product updates, web/phone support, and online joint coding sessions with ParaPy experts. Pricing is quote-based for commercial customers; a free trial license is available for evaluation.
• Free Hackathon The Free Hackathon is a two-day intensive joint development workshop that ParaPy runs on the customer's chosen engineering topic, with ParaPy developers working alongside customer engineers and culminating in a demo for the customer's stakeholders. Offered free of charge as a limited-time promotion, it functions both as a proof-of-concept and as the entry point into Joint Application Development.

Quantifiable outcome

• 99% reduction in design time - from weeks to minutes for structural designs
• +7 more outcomes

Named customers11 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration30 records

AI capability5 records

Feature17 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• MTC (Manufacturing Technology Centre)coreStrategic or Co-development Partner · 19 June 2020Joint development project to create parametric building skeleton design application. 5-week timeline with team of one ParaPy developer and three MTC developers. Application enables interactive design of sheet-reinforced concrete building skeletons with FEM analysis using Code Aster.
• GKN Aerospace / Fokker AerostructurescoreStrategic or Co-development Partner · 7 December 2016Long-term strategic partnership announced during Dutch PM Rutte's visit to YES!Delft incubator. First project: joint design and development of aircraft rudder, aiming to reduce design time from one year to several weeks. Partnership enables GKN to automate engineering design processes using ParaPy platform and state-of-the-art simulation software. First long-term partnership with established aerospace player.
• MetLase (Rolls-Royce & Unipart joint venture)minorStrategic or Co-development PartnerMetLase laser cutting tool used by MTC for producing scale models. Application exports STL files fit for MetLase laser cutting tool.
• Elemental (airship startup)coreStrategic or Co-development Partner8-week joint development project to create parametric airship design application. Includes structural analysis with Code Aster, aerodynamic analysis with FlightStream, and solar panel optimization with pvlib.
• TU DelftcoreStrategic or Co-development PartnerAnnual KBE Challenge competition partnership. TU Delft hosts KBE academic course (60-120 students) where ParaPy is used. Top teams compete in annual competition. 10-year partnership with 500+ students, 100+ companies, 250+ apps developed.
• TU Delft (Flying-V Project)coreStrategic or Co-development PartnerDr. Roelof Vos and team at TU Delft used ParaPy platform from day one to establish parametric, rule-based geometry of Flying-V aircraft. ParaPy coupled to structural (Nastran) and aerodynamic (SU2, AVL) analysis tools for design optimization.
• YES!DelftcoreOthersParaPy is based in YES!Delft, Europe's leading tech incubator. Provides energizing atmosphere, visibility, and connection to startup ecosystem.
• Delft EnterprisesminorOthersDelft Enterprises supports startups in Delft ecosystem. Logo shown on About page as supporter.
• Nuon Solar Team (Vattenfall Solar Team)coreStrategic or Co-development PartnerLong-term partnership since 2017. ParaPy software used to design aerodynamic shape for Nuna solar vehicles. Team won World Solar Challenge 7 times including 2017. Thousands of design iterations performed.
• Vattenfall Solar TeamcoreStrategic or Co-development PartnerAerodynamic design app built for NunaX solar car. Optimization considers mechanical, structural, and electrical systems as design constraints. App enables thousands of analysis-ready model evaluations in hours.

Scale indicators11 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• nTopology: Engineering design automation platform that uses parametric, rule-based modeling to let engineers build reusable simulation-driven design workflows. Closest direct competitor to ParaPy in philosophy, though nTopology leans more into generative/topology optimization.
• Synera: German engineering automation platform that enables engineers to build parametric design and simulation workflows in a low-code environment. Targets the same KBE/automation use cases as ParaPy across aerospace and mechanical engineering.

Broad incumbents

• ANSYS: Global CAE incumbent with simulation, parametric design, and optimization tools (Ansys Discovery, SpaceClaim). Overlaps with ParaPy's solver-agnostic simulation toolbox and competes for the same aerospace engineering budgets.
• Dassault Systèmes: Provider of CATIA, 3DEXPERIENCE, and SIMULIA with parametric (Knowledgeware) and simulation capabilities. Addresses the same engineering automation and multidisciplinary optimization use cases ParaPy targets, with a much larger enterprise footprint.
• Siemens Digital Industries Software: Owner of NX, Solid Edge, and Simcenter, including NX Knowledge Fusion for KBE-style parametric engineering. Competes head-to-head with ParaPy for aerospace/AEC design automation budgets.
• Altair Engineering: CAE and simulation platform (HyperWorks, Inspire) with parametric modeling and optimization tools. Competes with ParaPy for simulation-driven design and multidisciplinary optimization engagements.
• COMSOL: Multiphysics simulation platform with parametric sweeps and app-building (Application Builder). Overlaps with ParaPy's automated simulation workflows, especially for engineering teams that want in-app customization without a separate Python stack.
• PTC: Provider of Creo, Onshape, and Windchill with parametric modeling and PLM. Competes with ParaPy in CAD/PLM-led design automation, particularly for AEC/manufacturing customers.
• Hexagon (MSC Software): Owner of MSC Nastran, Marc, and Actran simulation tools plus CAD/CAM assets. Competes with ParaPy's solver-agnostic FEM integration approach and has deep aerospace customer overlap.

Others

• Cadence Design Systems: EDA and system-design automation platform with computational software and simulation tooling. While primarily serving electronic design, Cadence's expansion into system-level engineering and computational automation is thematically adjacent to ParaPy's automation play.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ParaPy