01
Platform build
The product itself — architected so it still holds up at ten times the traffic you have on launch day.
- Web application
- Mobile-first interface
- Cloud infrastructure
- Public API
We build your AI business
Turn ideas into
revenue
We work with founders from first sketch to first paying customer — building the platform, wiring in the AI, and running the launch. One team, one timeline, no handoffs.
- Platform build
- /AI & automation
- /Go-to-market
- Products shipped
- 7
- Countries served
- 6
- Client ARR built
- $2.4M
- Median idea → revenue
- 4.5 mo
01Services
Four things, done properly
Most agencies hand you a build and wish you luck. We stay on through the launch — and, if you need it, take the technical seat you haven't filled.
02
AI & automation
Models put to work on the parts of the business that eat hours — routing, drafting, matching, reconciling.
- LLM integration
- Workflow automation
- Analytics & scoring
- Evaluation harness
03
Product launch
Pricing, positioning and the first acquisition channels — run as an experiment log, not a slide deck.
- Positioning & pricing
- Launch sequencing
- Acquisition channels
- Revenue reporting
04
Fractional CTO
Executive technology leadership without the full-time hire — for founders with the idea and the funding, but nobody accountable for how it gets built.
- Product strategy
- Architecture decisions
- Technical hiring
- AI strategy
- Subscription
- A monthly retainer for the build and the team behind it.
- Revenue share
- A slice of what the product earns, paid only once it earns.
- Fixed scope
- One deliverable, one price, agreed before anything starts.
02About
A small team that ships
Serasi is a Delaware technology company. We work with founders who have an idea and a deadline, and we stay attached until the thing is live and earning.
A good idea is the cheap part. What decides whether it earns anything is the six months after it — the architecture choices you can't undo, the onboarding nobody tested, the channel you picked because it was the one you'd heard of.
We've done that stretch enough times to know where it goes wrong. So we take it on with you: we build the platform, put models to work on the parts of the operation that don't scale by hiring, and run the launch against numbers we agreed up front.
Being a registered Delaware company isn't a detail we mention for decoration. It means the contract, the IP assignment and the invoicing are boring and enforceable, which is exactly what you want when the product isn't.
- Founded
- 2024
- Entity
- Delaware LLC
- Base
- Newark, Delaware
- Working across
- 6 countries
“Hire us the way you'd hire a co-founder who happens to be very good at the technical half.”
How we work
01
We take the whole problem
Strategy, build and launch sit with one team. Nothing falls into the gap between a design file and a deploy.
02
Revenue is the deadline
A milestone that doesn't move you closer to a paying customer isn't a milestone. We plan backwards from the invoice.
03
AI where it pays
We use models on the work that actually costs you hours. Where a plain database query is better, we write the query.
04
Built to be handed over
Documented, tested, and yours. If you hire an in-house team next year, they inherit something they can read.
03Selected work
Five builds, and what they earned
Client names are under NDA, so they're described by sector. The numbers are the ones we reported at handover.
San Francisco, US8 months
Backed byY CombinatorA licensed-clinician marketplace that existed as a spreadsheet and a waiting list.
Patient–clinician matching, automated scheduling against clinician availability, and billing that reconciles itself.
- React
- Node
- Postgres
- Stripe
They turned a waiting list into a product that bills people. Eight months.
Founder, healthcare
- ARRby month 18
- $1.3M
- patientsseen per month
- 15,400
- growthyear on year
- 3.4×
Jakarta, Indonesia6 months
Inventory and customer service both running on manual work that scaled by hiring.
Demand forecasting on their own sales history, a support agent handling first-line tickets, and reorder workflows that fire on their own.
- Python
- OpenAI API
- AWS
- Shopify
The support queue stopped being the thing we talked about every Monday.
Founder, retail commerce
- fewermanual hours
- 83%
- CSATpost-automation
- 94.6%
- savedannual opex
- $1.8M
Toronto, CA12 months
A payments product that needed to clear compliance before it could clear a transaction.
Ledger, fraud scoring trained on their own chargeback history, and the audit trail their regulator asked for.
- Next.js
- Postgres
- Stripe
- Terraform
Compliance was the part we dreaded. It became the part we stopped thinking about.
Founder, fintech
- usersfirst year
- 51,200
- processedtransaction volume
- $12M
- uptimerolling 12 months
- 99.94%
Kuala Lumpur, Malaysia9 months
A marketplace for aircraft parts, replacing the WhatsApp groups and spreadsheets MRO buyers were sourcing from.
Supplier inventories indexed under one part number — alternates and superseded numbers matched automatically — with an RFQ flow, side-by-side quotes, and airworthiness certificates read straight off the PDF.
- React
- Postgres
- Elasticsearch
- Python
Sourcing a part meant six WhatsApp groups and a lot of hope. Now it's one search.
Founder, aviation
- partsindexed across suppliers
- 214,000
- medianAOG quote turnaround
- 6.4h
Undisclosed14 months
Adaptive control for a signalised corridor still running fixed timing plans set once a year.
Roadside sensing feeds a model of what the corridor is about to do, and the signals retime themselves each cycle against it.
- 01Sense
Cameras read speed, position and vehicle class along the approach — not just whether something is sitting on the stopbar.
- 02Predict
Arrivals at the next junction are forecast minutes ahead from the flow the sensors just measured.
- 03Control
Green splits and offsets are rewritten every cycle across the corridor, then held to the safety envelope.
- Python
- PyTorch
- Edge inference
- Postgres
The plans used to be retimed once a year. Now the corridor retimes itself every cycle.
Programme lead, transport authority
- lessdelay per vehicle
- 22%
- junctionsunder live control
- 14
- minsaved per peak trip
- 4.6
Yours would be the sixth. Tell us what you're building and we'll tell you what it takes.
04Process
Concept to revenue in five moves
Median time from first call to first paying customer is 4.5 months. Here's where those months go.
- 011–2 weeks
Discovery
We pull apart the idea until we can say who pays, why now, and what would have to be true.
- Market read
- Technical feasibility
- Roadmap
- Budget
- 022–3 weeks
Design & architecture
Interface and system get designed together, so the thing that looks right is also the thing that scales.
- Product design
- System architecture
- Stack decision
- Threat model
- 036–12 weeks
Build
Two-week increments against a live staging environment. You use it while we're building it.
- Platform build
- Model integration
- Public API
- Test suite
- 042–4 weeks
Launch
Pricing goes live, the first channels get switched on, and we watch what real users actually do.
- Release
- Lifecycle email
- Instrumentation
- Onboarding
- 05Ongoing
Compound
Weekly numbers, a running experiment log, and infrastructure that grows on the schedule the traffic sets.
- Revenue reporting
- Experiments
- Scaling
- Support
What you get in writing
- One team
- The people who scoped it are the people who build it.
- Two-week cadence
- Something usable ships every fortnight, without exception.
- Open repo
- You have commit access and CI visibility from day one.
05Contact
Tell us what you're building
One working day for a reply, wherever you are. The first consultation costs nothing and usually saves you a month.
Or skip the form
- EmailBest for anything with a document attached.
- 15-minute callEnough to work out whether we're a fit.
- Strategy sessionAn hour on scope, budget and sequencing. No charge.
What happens next
- 01We read it properly and reply within one working day.
- 02A 30-minute call to pressure-test scope and budget.
- 03A written proposal with a timeline, a price and what we'd need from you.