nodeandmass
node and mass
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AI made building cheap. Startups still need the expensive part: taste.

We help early-stage founders build less, and build it better.

Tell us what you're building
Taking on December projects
Previously built at
FinderOpenAIGoogleCanvaPayPalCrypto.comHolos TechCBAOracleAccentureFinderOpenAIGoogleCanvaPayPalCrypto.comHolos TechCBAOracleAccenture

From sketch to shipped, one week at a time.

Wk 1 · SketchWk 2 · FlowsWk 6 · Live
Week 1 · clickable sketch
Ledgerly · sketch 03
Overview
Accounts
Matches
nav — 3 tabs?
title
export?
chart goes here
tap → row detail
Week 2 · real flows
Overview
Accounts
Matches
Settings
v0.2
Reconciliation
This monthExport
Unmatched
INV-2841matched
INV-2842matched
INV-2843review
INV-2844matched
Week 6 · in production
live
Overview
Accounts
Matches
Settings
40 users
Reconciliation
This monthExport
Unmatched
12
INV-2841$4,120
INV-2842$980
INV-2843review
INV-2844$2,305
real users · real data
Not more output. Fewer wrong turns.

Building isn’t the hard part. Choosing is. Every week you get a real version, and we cut what doesn’t work.

A studio for startups deciding what's worth building.

How we work
Judgement is the whole product
Senior people making the calls: what to build first, what to cut.
Senior only
How we use AI
AI is the cheap part now
Prototypes land in days. Your budget goes on deciding which deserve to exist.
Days, not months
What you get
You leave with the reasoning
The product, plus a record of every call behind it. Your next hires inherit the thinking.
Built · Cut · Written
MVP builds
The smallest version that proves the business, built in four to six weeks.
Scoped MVPBuilt & testedHandover
Product design
Flows, screens and the system behind them, shaped by your users first.
UX researchUI designPrototypingDesign system
Product direction
Scope, sequence and the one metric your next round is judged on.
BriefRoadmapLaunch plan
Product engineering
Web, mobile, SaaS and AI, built by the same senior team.
WebsitesAppsSaaSAI features
Most founders arrive with twelve things to build. They leave knowing the one.
Book a call
Taking on December projects

Built with founders

Arktern anonymous profile card showing target visa 189 and 85% progress
Pre-seed · Migration tech · MVP
Arktern — a clear path through migration
We built Arktern’s MVP: AI that shows which professions are in demand and where your points stand, plus the tools and community to act on it.
Cava Mendoza winery page for Catena Zapata
Cava Mendoza — wine e-commerce / architecture & SEO
Deal Goblins homepage: Melbourne's best deals with suburb search
Deal Goblins — Australia’s food deal site / 0→1

Why Node and Mass?

You ask for a feature
We’ll tell you if it’s the wrong one.
The team disagrees
A prototype by Friday settles it.
Who does the work
Leads who’ve shipped at scale, hands on.
When it ends
Code, docs and decision log — all yours.
Big-tech judgement, sized for pre-seed to Series B.
Taking on December projects
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The human behind Node and Mass

Soujanya Datta
Soujanya Datta
Founder · Head of Product
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👋Say hi

Ten years in product taught me one thing: great teams rarely fail from building badly. They fail from building the wrong thing.

So I started Node and Mass to do it differently.

Method

A clickable prototype in front of real users within days. Evidence decides what gets built, not opinions. Then we build it fast.

People

Designers and engineers from some of the best product teams in the world. The people you meet are the people who build it.

Side note

I angel invest in FemTech, DeepTech and FinTech. Building something cool? Hit me up.

Previously at
FinderPayPalMacquarie UniversityMonash UniversityKepler AnalyticsCipher Sports Technology GroupAirtreeFinderPayPalMacquarie UniversityMonash UniversityKepler AnalyticsCipher Sports Technology GroupAirtree

What people we’ve worked with say

SJ leads teams from discovery through to delivery, building products that are high value generators.

01 / 03
Shayan AfsharProduct Manager · DroneShield

Tell us what you're about to build.

A 30-minute call. No deck. We'll tell you what we'd build first, and if we're not the right fit.

Book a call
Taking on December projects