UK-registered · Est. 2020
Production AI that survives the demo.
Fixed 2–4 week sprints for RAG, agents, CV, and LLM features — built by founders, not a marketplace gig.
Sprint
2–4 weeks
From
$2.5k
Deposit
50%
Builders
Founders
Our products
Systems we build and own — DocFlow AI, Juris Cortex, and more.
A modern operating system for immigration practice.
Patient reactivation — operated, not software.
Patient-owned medical history — photo a lab report, understand every value.
AI-native legal practice management for UAE & GCC firms.
Self-hosted B2B lead engine — discover, enrich, score, and draft outreach.
List products on Shopify & WooCommerce by sending a WhatsApp photo.
In-app cancellation flows for Stripe SaaS — see churn, then save it.
Why most AI builds fail
Demo without ownership
Looks great in a meeting — then dies on auth, cost, or real users.
Cheap gigs, weak outcomes
Marketplace pricing attracts throwaway work, not production systems.
Agency handoffs
You brief a salesperson. Juniors build. Context disappears.
What we build
All →Retrieval-augmented generation
Corpus design, chunking strategy, metadata filters, hybrid search, citation-first answers, refusal behaviour, and evaluation harnesses so quality does not silently regress.
- Document ingestion pipelines
- Jurisdiction / tenant isolation
- Groundedness evals
Agents and tool-calling systems
Agents that call internal APIs with least privilege, durable state, human approval gates, and observability — not unbounded loops that email your customers by accident.
- Tool schemas & auth boundaries
- Workflow orchestration
- Audit logs
Computer vision & imaging
Detection, segmentation, and domain imaging pipelines — including healthcare-adjacent work where explainability and data handling are part of the product.
- Model selection & fine-tuning
- DICOM / domain I/O
- Saliency / explainability
LLM features inside products
Copilots, extraction, classification, and automation wired into React/Node/Python codebases with product UX, rate limits, and monitoring.
- Prompt + policy design
- Streaming UX
- Guardrails
Packages
Details →Rescue Sprint
$2,500 – $5,000
2 weeks
Most booked
Feature Sprint
$4,000 – $8,000
3–4 weeks
Monthly Engineering Bench
$3,000 – $6,000 / month
Rolling · 14-day notice
How it works
01
Fit call
20–30 minutes. We learn the product, constraints, and success metric. If we are the wrong team, we say so immediately.
02
Written scope
Deliverables, out-of-scope list, timeline, price, and assumptions. No work starts without mutual agreement and deposit.
03
Build in the open
Weekly demos (or more often on short rescues). You see progress in the actual environment — staging URLs, dashboards, eval reports.
04
Handover
Deployed outcome, operational notes, and options: stop cleanly, extend with another sprint, or move to a monthly bench.
Clients
Founders and operators who hired us to ship real product work — then came back or referred peers.
“Zain has been outstanding to work with. He’s professional, responsive, and truly understands how to bring a vision to life. I hired him to help build out key features for my Owner Builder Concepts project, and he delivered high-quality work every step of the way. He communicates clearly, listens carefully, and executes.”
Raymond
Founder, Owner Builder Concepts · United States · Repeat engagement · product features
“I am very satisfied with the final product. He did a great job delivering what we agreed to develop. Very good communication and on time. I am going to order again — recommended.”
Maen
Product client · Jordan · End-to-end delivery
“They understood the project idea right away and worked with me to make it happen. Responsive when needed. Would definitely continue working with them.”
Taha
Client · United States · Collaborative build
“It is a pleasure dealing with Zain. With every project you run into issues that need resolving — that was never a problem. We worked through each one. Great job.”
Client
Repeat client · United States · Multi-project relationship
FAQ
What does Developers Core specialise in?
How much do engagements cost?
Are you a UK company?
Who actually builds the work?
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Have a real product problem?
Tell us the context and what “done” looks like. We reply within a business day.