Engineeringthatscaleswithyourambition.
We are a product engineering team helping startups launch faster with strategy, custom web platforms, CRM solutions, and AI-powered workflows.
01 Problem
Sound familiar?
Your backend can't handle the load you're about to get.
Unoptimised queries and missing caching don't matter at 100 users. At 10,000, they're your outage.
Your AI feature is a demo. Not a product.
Prompt-chaining in a Jupyter notebook is not a RAG pipeline. Production needs chunking, retrieval, error handling, and cost control.
Your team is shipping fast. The codebase is paying for it.
Speed without structure is debt you'll spend the next six months unwinding. Usually at the worst possible time.
02 Services
Your API still works when the load doubles.
End-to-end systems built for real traffic. Node.js APIs, React frontends, and PostgreSQL data layers — architected to grow without rewrites.
AI that runs in production. Not just in the demo.
RAG pipelines, agent orchestration, and fine-tuned models wired into your existing product. Built to be reliable, not impressive.
Multi-tenant from day one. No rewrites later.
Subscription billing, role-based access, and tenant isolation — baked in from the first commit, not bolted on later.
Your infra is boring. That's the goal.
CI/CD pipelines, containerised workloads, auto-scaling, and zero-downtime deploys. Infrastructure that disappears into the background.
One codebase. Both stores. No compromises.
React Native applications sharing logic with your web platform. Offline-first, performance-tuned, shipped to both App Store and Play Store.
03 Proof
By the numbers
Years in production
Not years of experience — years of systems still running
Latency Reduction
AdvertMate · Redis caching · measured in prod
Users Served
Across platforms built in the last 4 years
Avg. time to first deploy
Discovery call to production
04 Case Study
Featured work
Real problems. Real systems. Real outcomes.
AdvertMate
Ad copy for 40 clients — automated. What took 2 hours now takes 8 minutes.
05 Products
Products
We don't just build for clients. We build for scale.
Some problems we've solved for clients, we've turned into products that any team can use — owned, maintained, and shipped by Crestlane.
06 Process
How it works
No ambiguity. Just a clear path to shipped.
Discovery call
We listen, diagnose, and tell you honestly if we can help — and what getting there actually looks like.
Scoped proposal
Fixed scope, fixed price, no ambiguity. You know exactly what you're getting before a single line of code is written.
Build & ship
Weekly updates, one production deploy, and you own the code outright. No lock-in, no hand-holding required after.
07 Next Step
Tell us what you're building.
We'll tell you honestly if we can help — and how.