We Fix the Software That's Already Broken.
AI-built apps that outgrew their prototype — audited, repaired, and hardened for production. EU-based, fully yours.
EndSpec repairs, secures, and maintains production software to European engineering standards — security, QA, and data protection built into every engagement. The work speaks through the named clients below.
Built with Lovable, Bolt, or Cursor? The triage is free: we read your actual code and tell you what is broken, what it would take to fix, and whether it is worth fixing at all. Rescues are quoted fixed-price from there, from $12,000.
What Our Clients Say
“EndSpec has been excellent to work with - fast, professional, and highly collaborative with our engineering team. They deliver quality work quickly and communicate clearly throughout the process. Their technical skills and reliable approach have made them a valuable partner for our data projects.”
“...excellent from start to finish. They are true AI specialists. They know the technology, understand real business constraints, and are able to explain complex topics clearly and pragmatically. In a space where many vendors oversell or stay at a very high level, Endspec stands out for its depth, precision, and honesty.”
“They asked the right questions to make sure that they delivered exactly what we needed. Communication was timely and prompt, would definitely work with EndSpec again.”
What We Do
We build the AI systems, ship the product engineering, and rescue the AI-built apps that your revenue runs on.
AI Systems
"Built Around Your Workflows, Not the Other Way Around"
We design and build production AI systems — process automation, document intelligence, custom assistants — integrated with the stack you already run rather than bolted alongside it. After launch we watch how they behave in real use and keep iterating, on an ongoing retainer if you want one.
- Process automation inside your existing tools
- Intelligent document processing
- Custom AI assistants
- Monitoring and iteration after launch
Product Engineering
"From MVP to Production SaaS"
Full-stack product delivery on a modern stack — React, Node, and the infrastructure around them — with QA, CI, and security review built into the work instead of bolted on at the end. We take products from their first version through to scale, and everything we build is yours.
- Full-stack delivery, front to back
- Automated test coverage (Playwright suites)
- CI pipelines and error monitoring
- You own the code, models, and docs
Rescue & Hardening
"For AI-Built Apps That Have to Grow Up"
Apps built with Lovable, Bolt, or Cursor that now carry real users and real data. We start with a free security and stability triage — we read your actual code and write up what is broken, what it would take to fix, and whether it is worth fixing at all. If there is work to do, the rescue is quoted fixed-price from those findings, from $12,000, and you can keep us on afterwards to keep it running.
- Free security & stability triage
- Fixed-price rescue from $12,000
- Test suite, CI, and monitoring
- Keep-it-running retainer, $2,500/month
Recent Projects & Results
AI-Powered Legal News Automation
Challenge:
- Manual daily curation of legal and tech news
- Time-intensive article summarization
- Inconsistent publishing cadence
- Sourcing high-quality, relevant content
- Limited in-house automation expertise
Solution:
- AI-driven aggregation from trusted sources
- NLP-powered professional-grade summaries
- Fully automated daily publishing workflow
- Seamless website integration
- QA-validated, hands-free delivery
“They combined deep AI expertise with a clear understanding of our business goals. The system now delivers daily insights automatically, with accuracy and consistency we couldn't achieve manually.”
Dynamic Workflow Builder with React Flow
Challenge:
- Needed visual workflow builder for automation platform
- Complex branching logic with collapsible sections
- JSON-driven dynamic node rendering required
Solution:
- Custom React Flow implementation in Next.js
- Dynamic add/edit/delete node functionality
- Vertical sequence layout with branching support
“They asked the right questions to make sure that they delivered exactly what we needed. Communication was timely and prompt, would definitely work with EndSpec again.”
AI-Powered YouTube Creator Platform (Ventress)
Challenge:
- Build an end-to-end YouTube copilot SaaS from scratch
- Help creators ideate, script, and optimize videos faster
- Design scalable multi-tenant architecture for teams & agencies
Solution:
- Fastify backend + Next.js frontend
- AI-driven ideation, script writing, hooks & voice matching
- YouTube API, trend analysis, SEO metadata & analytics integration
“EndSpec understood the creator economy and helped us build a platform that actually improves YouTube growth workflows.”
Trusted by Leading Companies
Automotive • SaaS • Legal • Creator tools • Healthcare marketing • Productivity
Why Choose EndSpec
We're Practitioners, Not Advisors
We're engineers who've built and run AI systems in production. We don't recommend solutions — we build, deploy, and support them.
Results-Based Pricing Available
A portion of our fee is tied to measurable outcomes. If we don't deliver the projected ROI, we don't get paid in full.
You Own Everything
Every line of code, every model, every piece of documentation is yours. No vendor lock-in. No recurring licenses to us.
Boutique Attention
We take on a few engagements at a time. The senior engineers who scope your project are the ones who build and ship it — nothing is handed down.
We Actually Tell You the Truth
Not every business needs AI. When it won't move the needle, we say so and point you at what will — even when that means less work for us.
Our Guarantee
The triage is free. If it doesn't find work worth doing, we tell you that and it has cost you nothing — we'd rather send you away with a straight answer than take money for a project we don't believe in.
The clients below are named because the work is real — every quote has a name and a role behind it, and the projects are documented in the case studies.
Common Questions
How much does an engagement cost?
The triage of an AI-built app is free. Rescues are quoted from that triage at a fixed price, from $12,000, and more when the work is closer to a rebuild. Custom AI and product builds are a separate track, from $5K on the same fixed-price basis. Keep-it-running and hardening retainers are $2,500 per month.
Do you fix apps built with Lovable, Bolt, or Cursor?
Yes. That is the rescue track, and it starts with a free triage: we read your actual code and write up what we find. Then we quote the fix at a fixed price, from $12,000, so you see the full scope before you commit. We never quote a rescue without reading the code first.
What if there's nothing worth fixing?
Then we say so, and it has cost you nothing — the triage is free precisely so that answer stays honest. Same if you ask us to build something and we think the software isn't the problem. We would rather send you away with a straight answer than bill you for work that won't pay off.
Can you work with our in-house team?
Yes, and we prefer it. We pair with your engineers on the hard parts, write down what we change and why, and hand the work back in a state your team can carry on with.
Who owns the code?
You do. Source code, models, infrastructure config, and documentation are yours from day one. No licences payable to us, no components only we can maintain.
What happens after launch?
Every build ships with 60 days of hands-on support. After that you can run it yourself, hand it to another team, or keep us on a monthly retainer for monitoring, fixes, and new work.
Do you work with our existing stack?
Yes. We build into the systems you already run rather than around them, and we say up front when a piece of your stack is the thing holding the project back.
How do I know you can do this?
Look at the work. Every case study on this site names the client, and every testimonial carries a real name and a real role — nothing anonymous, nothing invented. Judge the delivery record directly.
Put Senior Engineers on the Software Your Revenue Runs On.
Two ways to start. Book a 30-minute intro call and tell us what's breaking, and we'll say plainly whether we're the right team for it. Or, if you already have an AI-built app in production, start with the free triage and get a written read on where it actually stands.
Book a 30-Minute Intro CallOr email us directly: contact@endspec.net
Phone: +40-763-222-547