The Arena
How It Works
Weekly engineering design competitions. Real briefs. Real prize money. Blind review, so the best engineering wins — not the best politics. The community votes on the winner. Entry costs less than a round at the pub.
For Engineers
Get the Brief
Every week a new real-world engineering design challenge drops — written by practising engineers, not academics. Tight constraints, real deliverables, a problem worth actually solving. You get the full brief the moment you join. Mark it up, start thinking, get competitive.
Throw Your Hat in the Ring
Entry costs less than your morning coffee run — typically £10. That goes straight into the prize pot. You're not buying a lottery ticket; you're buying a deadline, a reason to finish something, and a shot at the pot. Skin in the game. That's what makes it serious.
Submit Your Pack
Upload a single PDF — your concept, calcs, bill of materials, design rationale, drawings, the lot. Add up to 5 preview images for the gallery. No templates, no word limits, no arbitrary boxes to tick. Just engineering. The deadline is the deadline. No extensions.
Independent Review
Every submission is reviewed and scored against the published rubric. Your name is removed before any reviewer sees your work — no politics, no favouritism, no marks for knowing the right people. Reviewers check the engineering: do the physics work, does it solve the brief, could it actually be built? The best submissions go forward as finalists.
The Community Votes
The top 3 finalists are published and put to a community vote. Every registered engineer gets a say. You're not waiting on a panel of judges to make a call behind closed doors — the engineers who entered decide who wins. Voting is open for a set period shown on the competition page.
Winner Takes the Pot
Prize splits are published on every competition page before you pay a penny — no surprises. The winner and runner-up are paid directly to their bank account via Stripe within 48 hours of voting closing. The full leaderboard stays public — your score is permanent.
The entry fee in perspective
£10
MechCompete entry
Goes 100% into the prize pot. You're competing for it back — with interest.
£9
Two flat whites
Gone in ten minutes. Nothing to show for it.
£12
Pint + bag of crisps
Enjoyable. Forgotten by morning.
Why You Should Enter This Week
There are a hundred reasons to put it off. Here are four better reasons not to.
Actual prize money
Prize pots scale with entries. 40 engineers at £10 each means £240 to the winner — from a weekend's focused work. More entries, bigger pot. Simple.
Portfolio gold
A finished engineering pack — brief, calcs, BOM, rationale — is exactly what technical interviewers want to see. Win or lose, you've built something real to show.
Deliberate practice
Tight brief. Hard deadline. Unknown competition. Every week you enter makes the next one faster. This is how you sharpen tools that actually get used at work.
Bragging rights
The leaderboard is public. Your username and score are permanent. Beat a hundred engineers to the top spot and that follows you around.
What Reviewers Look For
Submissions are scored against these five criteria. The rubric is published before every competition so you know exactly what's being assessed. No surprises, no moving goalposts. Your name is never visible during review.
Does the physics check out? Are the calcs correct and the assumptions stated? Could a competent engineer build this and have it actually work?
Did you solve the stated problem? Elegant solutions to the wrong question score zero here. Read the brief twice. Then read it again.
Is the approach novel, or does it take an existing idea somewhere new? Clever thinking that improves on the obvious is rewarded.
Can it actually be built, with real materials and real processes, at a realistic cost? No fantasy alloys. No BOM, no score.
Is your submission complete as the brief requires? Concise and to the point — no waffle. Reviewers shouldn't have to hunt for your reasoning.
The brief is live. Are you in?
Takes two minutes to register. Less than a coffee to enter. Could win you a lot more.
Frequently Asked Questions
Who can enter?
Any engineer, anywhere in the world. No restrictions on profession, experience level, or country. Graduate or greybeard — if you can do the engineering, you can enter.
What format should my submission be in?
A single PDF containing your drawings, calculations, BOM, and design rationale. You can also upload up to 5 PNG or JPG images for the gallery.
How does the review process work?
Every submission is scored against the published rubric criteria. Your name is removed before review begins — reviewers only see the engineering. The top submissions are selected as finalists and go to community vote.
Who picks the winner?
The community does. The top 3 finalists go to a vote open to all registered engineers. Most votes wins. No panel, no single judge, no black box.
Is it actually fair?
Yes. Names are stripped before review, so reviewers only see the work. Finalists are chosen on scoring criteria that are published in advance. And the final call goes to a community vote — not a single decision-maker.
What if I pay and don't submit?
Your entry fee goes into the prize pool anyway — you're just not eligible to win it. Submissions must be in before the deadline. No refunds after payment. That's the deal.
How do payouts work?
Via Stripe direct bank transfer. Winners are paid within 48 hours of voting closing. You'll connect your bank account when you register — two minutes, done.
Who owns my design IP?
For public competitions: you do. You submitted it, you own it. For sponsored competitions: entering grants the sponsor a licence to use the design — this is stated clearly in the brief before you pay a penny.
For Sponsors
Sponsored competitions put your real engineering problem in front of motivated engineers who have paid to be there. These aren't students looking for a line on their CV — they're engineers with skin in the game who want to win. You get serious work.
We write the brief with your input, run the competition, review every entry, and handle everything from payments to announcements. You review the finalists and take the IP.
What You Get
- —Real engineers solving your actual problem — not students padding a CV
- —Prize pot replaces expensive consultancy for early-stage concept work
- —All IP belongs to you — designs submitted become sponsor property
- —Talent pipeline: identify engineers worth recruiting before you meet them
- —Access to every submission, not just the winner
- —Private, invite-only competitions available on request
Interested in sponsoring?
Tell us your problem. We'll tell you what it costs to run.