Free On-demand masterclass
Watch a simulation built from nothing.
Forty minutes, one factory, no licence fees. Watch a working factory simulation written live in Python with SimPy, from blank file to running model, and see how a real simulation study is scoped, modelled and delivered. Then decide, at your leisure, whether the craft is for you.
Forty minutes · Instant access · Watch whenever suits you
- 01 Why Python over the licence fee
- 02 A factory simulation, built live
- 03 Conceptual modelling, demystified
- 04 How successful studies are run
- 05 Where the skill leads
fig. 1 · forty minutes, recorded; rewind as often as you like
01 The running order
What the forty minutes contain
Five movements, in roughly this order; the factory is the centrepiece.
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Why Python beats the expensive suites
The same modelling power as software costing £50,000 a year, in an open-source library you could adopt this afternoon.
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A factory simulation built before your eyes
Not slides about a model; an actual SimPy model, written step by step from an empty file to a running factory.
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The craft of conceptual modelling
A straightforward way to turn messy real-world problems into clean models that can actually be solved.
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What makes simulation projects succeed
Hard-won lessons from years of studies that informed real decisions, including the mistakes worth skipping.
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Where the skill can take you
A frank look at the career opportunities and earning potential that simulation expertise opens up.
02 The fit
Is it for you?
Probably, if any of the following sounds familiar:
- You are frustrated by software that costs tens of thousands and still cannot do what you need
- You are curious about Python and SimPy but unsure where to begin
- You want a clear path from concept to working simulation
- You are building skills you intend to be valuable for decades
- You want to deliver more impact for clients or employers
If one of those rang true, press play. If all five did, you may be rather glad you found this page.
03 In their words
What colleagues and students say
Harry consistently impressed me with his mastery of both the technical side of simulation modelling and coding as well as the nuanced aspects of simulation project management. He possesses a rare combination of modelling expertise and a keen understanding of how to translate complex business needs into effective simulation models. His leadership, focus on results and exceptional communication skills make him an ideal person to learn from.
Rory Greig Research Engineer at Google DeepMind Harry is the ultimate professional when it comes to simulation. I had the privilege of working alongside him at Anglo American, where he led the creation of a cutting-edge simulation product from scratch. Harry's ability to bridge simulation, software and systems engineering while keeping everything practical and results-focused is unmatched. If you're considering learning simulation from Harry, you couldn't be in better hands.
Chris Samiullah Technical Programme Manager at Pydantic Harry's expertise spans the entire simulation lifecycle; from engaging with stakeholders to gather clear requirements, to modelling, designing and developing SimPy simulations, as well as analysis and communication of results. If you wish to master every aspect of applying simulation to improve business decisions, then Harry is an expert guide.
Dr Peter Malkin Principal Operations Researcher at CloudNC Working with Harry was an incredible learning experience. His technical mastery of simulation is impressive, but what really sets him apart is his ability to align simulation projects with real-world business challenges. He's also a brilliant teacher; patient, enthusiastic and genuinely invested in helping others succeed.
Dr Alastair Heggie Senior Modelling and Simulation Engineer 04 Your host
Hello; I am Harry.
Simulation specialist and Chartered Engineer (CEng MIMechE). I have spent more than a decade building simulations across transport, mining, defence and energy; along the way I have been individual contributor, team lead, tech lead and now business owner and consultant.
That breadth shapes how I teach. I know what it is to be handed a vague brief and expected to deliver something credible; I know which shortcuts hold and which mistakes quietly cost months.
The masterclass shares the foundations I wish someone had handed me at the start. No expensive software required; just Python, SimPy and a willingness to learn.
Press play when you are ready.
The recording is free and yours to watch whenever suits; the only price is an email address. If those forty minutes convince you, the courses will be waiting.
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