Assembly HQ is a development agency that turns your projects into working products. Fixed pricing. Milestone delivery. No freelancer chaos.
Tell us what you need built. We ask the right questions, identify gaps, and come back with a clear scope and fixed quote within 48 hours.
We take full ownership of the build. One point of contact, one team, one deadline. You'll never chase anyone or manage anyone — that's our job.
Weekly progress updates, milestone-based billing, and a working product at the end. No surprises, no scope creep, no excuses.
A selection of recent builds. Client details anonymised for confidentiality.
Built a hardware-level iOS automation system that creates and manages Instagram accounts across a fleet of physical iPhones. Includes SMS verification integration, randomised human-behaviour simulation, IP rotation, and a real-time management dashboard.
End-to-end marketplace platform with vendor onboarding, payment splitting, real-time inventory sync, and a customer-facing storefront. Integrated Stripe Connect for automated payouts and built a custom admin dashboard for the operator.
Automated a legal firm's document intake workflow. The system extracts key clauses from contracts using GPT-4, flags risk items, generates summaries, and routes documents for human review — cutting processing time from 4 hours to 12 minutes per document.
Every project gets a fixed quote before we start. Here's where most projects land.
A focused build with a tight scope. Perfect for MVPs, single-feature tools, bots, and automations.
A full product build with multiple components. Web apps, platforms, integrations, and dashboards.
Complex systems, multi-platform builds, or ongoing development partnerships. Enterprise-grade delivery.
These are typical ranges. Every project gets a custom quote based on your exact requirements.
Every project is backed by contracts, milestones, and guarantees — all in writing before we start. Here's exactly what you get.
Full MSA with scope, timeline, deliverables, and acceptance criteria. No ambiguity. You know exactly what you're getting before we start.
You pay as we deliver. 50% upfront to start, then payments tied to tangible milestones. You never pay for work that hasn't been done.
On final payment, you own 100% of everything we built. Code, designs, documentation — all of it. Transferred in writing.
If something breaks within 30 days of delivery that should have worked per the agreed spec, we fix it at no charge. No arguments.
If you need to cancel mid-project, you pay for completed work plus a 50% kill fee on the remainder. We deliver all work-to-date within 7 days.
Every project is covered by mutual NDA. Your idea, your data, your business strategy — none of it leaves our team. Ever.
"We needed an iOS automation system built fast and done right. Assembly HQ scoped it in 48 hours, delivered ahead of schedule, and the system has been rock-solid."
"I'd tried two other agencies before. Both over-promised and under-delivered. Assembly HQ was the opposite — conservative estimate, then delivered more than I asked for."
We maintain a vetted network of specialist developers across Europe. Every project is matched to the right person based on tech stack and domain. You deal with us — we manage the builder.
Every milestone has an acceptance step. You review, approve, or request changes before we move on. If the final delivery doesn't match the agreed spec, we fix it under warranty at no cost.
Your primary contact is always your Assembly HQ project lead. For technical discussions, we can arrange direct dev calls — but project management stays with us so nothing falls through the cracks.
Through written Change Orders. If you want to add something mid-project, we scope it, price it, and get your sign-off before any additional work begins. No surprise invoices.
Both. Our Sprint tier is designed specifically for startups and solo founders who need an MVP built fast and clean. We've worked with pre-revenue founders and established businesses alike.
We're stack-agnostic. Our network covers React, Next.js, Node, Python, Swift, Kotlin, Go, Rust, and more. We match the stack to the project — not the other way around.
Download our free project scoping checklist — the same framework we use internally to estimate every build.
Tell us what you need. We'll get back to you within 24 hours with a scope and quote.