InventionHill
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Product Design

Design flows teams can validate
and engineers can ship

Move from research and flows into prototypes, reusable systems, and developer-ready handoff instead of isolated screens.

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See Design System Examples
  • Research and product framing first
  • Flows, prototypes, and systemized UI
  • Developer-ready handoff with real constraints

Service overview

Design artifacts your team can validate, ship, and keep extending.

Senior-led product design: UX research, design systems, and high-fidelity UI. Design systems, prototypes, and developer handoff for startups and product teams. We turn product questions into research artifacts, validated flows, reusable interface systems, and developer-ready handoff...

What you get

Product design work organized around artifacts teams can validate and engineers can actually build.

ArtifactsResearch briefs, flows, prototypes, systems
ValidationUsability checks before design debt compounds
HandoffTokens, components, and build-ready specs

We blend product strategy, user research, and high-fidelity design to create products that customers love and teams can build.

This is how product teams reduce ambiguity: clearer flows, reusable systems, and design decisions grounded in actual product constraints.

Design deliverables

What is part of the engagement.

  • Discovery briefs, personas, and journey mapping
  • User flows, wireframes, and clickable prototypes
  • High-fidelity UI and reusable component systems
  • Usability testing, feedback synthesis, and iteration
  • Developer-ready handoff with tokens and annotated specs
Best fit

Where this delivery model works best.

Founders shaping a new product direction

You need structure around flows, priorities, and the first design system before engineering commits too early.

Product teams cleaning up inconsistent UX

You have a live product and need a systemized interface language, clearer workflows, and faster future iterations.

Engineering teams that need build-ready design

You want fewer handoff gaps, clearer states, and artifacts that map directly to implementation constraints.

Design scope

What the design track actually produces

The artifacts product teams usually need before engineering can move with clarity, confidence, and less rework.

DiscoverBrief + flow map

Research framing and product-definition artifacts

We align the team around user jobs, constraints, edge cases, and workflow priorities before the interface system grows in the wrong direction.

Journey mappingProblem framingSuccess criteria
PrototypeWireframes + clickable flow

Prototype-driven interaction design

We test risky navigation, dense states, and key decision points in wireframes and clickable prototypes before polishing visual details.

WireframesUsability checksFlow validation
SystemizeTokens + components

Reusable interface systems built for scale

UI patterns become tokens, components, and reusable rules that keep future product work consistent instead of screen-by-screen.

TokensComponent patternsState logic
ShipSpecs + implementation notes

Developer-ready handoff with real product context

Engineering gets annotated specs, behavior notes, acceptance criteria, and collaboration support so the design survives implementation.

Annotated specsQA notesHandoff support

Design process

How we design products

We reduce ambiguity by moving from problem framing into flows, interface systems, prototypes, and developer-ready delivery.

Problem framing artifacts

Discovery outputs include journeys, priorities, constraints, and the success criteria the team will use to judge the work.

Prototype before polish

We validate flows and interaction assumptions in wireframes and clickable prototypes before expanding the visual system.

Systemized handoff

Design tokens, reusable components, usage notes, and implementation-ready specs reduce guesswork for engineering.

01

Frame the product problem

We align on users, jobs-to-be-done, business constraints, and the workflows that carry the most product risk before drawing polished UI.

  • discovery brief
  • journey map
02

Map flows and prototype the risky parts

We turn requirements into flows, wireframes, and clickable prototypes to validate assumptions around navigation, states, and interaction friction.

  • user flows
  • wireframes
03

Build the interface system

High-fidelity UI is organized into reusable tokens, components, and patterns so the product can keep evolving without visual drift.

  • token system
  • component library
04

Hand off with implementation context

We prepare developer-facing specs, edge-case notes, and collaboration support so the design survives contact with real engineering constraints.

  • annotated specs
  • dev handoff

Design examples

Design-led product examples

Examples where interface systems, flow clarity, and product usability mattered as much as implementation quality.

View all case studies
Vireats case study preview
Food & DrinkPython
Key outcome

Digital Scaling Platform for Virtual Restaurants & Ghost Kitchens

Vireats

Vireats is a digital-first platform empowering virtual restaurants and ghost kitchens to scale in the modern era. It connects independent chef...

  • Architected a scalable food ordering and social feed system using Python and PostgreSQL
  • Digital Scaling Platform for Virtual Restaurants & Ghost Kitchens
PythonPostgreSQLiOS
View Case Study
Ceramic Portal Web case study preview
Web & BackendNext.js
Key outcome

Real-Time Inventory Synchronization

Ceramic Portal Web

Ceramic Portal is a specialized B2B SaaS platform that digitizes the supply chain for ceramic dealers and wholesalers by automating order proc...

  • Full-stack architecture design using Nest.js and Next.js
  • Real-Time Inventory Synchronization
Next.jsNest.jsMariaDB
View Case Study
Apex - Roofing & Restoration case study preview
Business & Field ManagementReact Native
Key outcome

Real-Time Hail Probability & Weather Intelligence

Apex - Roofing & Restoration

The Apex Roofing & Restoration app is an all-in-one field management solution that streamlines lead tracking, appointment scheduling, and real...

  • Full system architecture ownership — mobile app, backend API, and infrastructure
  • Real-Time Hail Probability & Weather Intelligence
React NativeMapAPIAWS Cloud
View Case Study

Design tools and systems

Design tools and methods chosen for product clarity

We keep the toolkit curated around collaboration, validation, reusable systems, and developer-facing handoff rather than chasing the newest design stack.

Selection principle

Core design workspace

Research notes, flows, interface explorations, and handoff live in shared systems so the product team always has one current source of truth.

Figma, FigJam, Figma Prototypes, GitHub

Selection principle

Prototype and validation loop

We prototype the highest-risk paths first, gather feedback, and tighten the flow before expanding the visual system.

Figma Prototypes, Maze, Hotjar, Dovetail

Selection principle

System and handoff layer

Design tokens, component documentation, and implementation notes are treated as deliverables so engineering can move faster with less ambiguity.

Storybook, Tokens Studio, Figma Dev Mode, Zeroheight

Core design workspace

4 tools

The shared place for exploration, flows, UI, and decision history.

Figma
FigJam
GitHub
Storybook

Prototype & validation

4 tools

Used to test the risky parts of the product before UI debt compounds.

Figma Prototypes
Maze
Hotjar
Dovetail

System & handoff

4 tools

Reusable tokens, components, and implementation context for engineering.

Storybook
Tokens Studio
Figma Dev Mode
Zeroheight

Research synthesis

4 tools

Capture feedback, usage patterns, and usability signals in a way the team can revisit.

Dovetail
Hotjar
FullStory
Maze

Pricing and delivery

Clear budget, delivery scope, and next steps.

We scope design work around research depth, workflow complexity, and how much systemization or handoff the product needs.

01Estimate

$2K – $10K

Typical investment (USD)

Pricing reflects senior-led product design, research-driven decisions, and long-term design system value — not hourly output.

Fixed price. We give you a firm quote after discovery.Discovery + MVP kit typically $2K–$10K.
02Timeline

2 – 6 weeks

Typical delivery window

The exact window depends on research scope, flow complexity, and how much systemization or implementation support the design track includes.

  • Fast design cycle.
  • Week 1: Discovery
03What is included

What the design scope is designed to protect.

  • Research-validated design decisions
  • Living design system documentation
  • Developer-ready handoff assets
04Delivery scope

What your team receives as part of delivery.

  • Senior designers embedded in product decisions
  • Design tokens built for scale and consistency
  • Continuous usability testing and iteration
  • Clear milestones with stakeholder communication
Next step

Use a discovery call to turn this into a realistic design scope.

We can clarify the user flows, artifact set, and handoff expectations before we put a firm proposal in front of you.

Request a CallNo obligation. Clear design-scope recommendation.

FAQ

Frequently Asked Questions

Common concerns from product teams before they commit.

You own 100% of the Figma files, design tokens, component libraries, and all documentation from day one. There are no licensing fees and no dependency on us.

Yes. We deliver developer-ready assets with proper specs, design tokens, and component documentation. We also provide Storybook integration where needed.

Research is core to how we work. Every engagement includes discovery, user research, and usability testing. We don't design in a vacuum.

We can audit, extend, or restructure existing design systems. Our goal is to make your system more scalable, documented, and developer-friendly.

Shape the product

Shape the product with research, systems, and build-ready design

Work with senior product designers who can frame the problem, validate the workflow, and hand engineering something clear enough to ship confidently.

A quick review of your current delivery situation, an honest fit check, and a recommendation on the next technical step.

  • Research to handoff
  • Prototype before build
  • Implementation-ready outputs
  • Reply within 1 business day