# L-LINE DIGITAL

> L-LINE DIGITAL is a Romania-based user experience practice. Human-centred UX grounded in cognitive psychology and HCI — with AI as leverage, not a replacement for understanding people. Delivered across e-commerce, consumer apps, FinTech, Web3, insurance, and beyond.

Registered in Romania.

## What L-LINE DIGITAL does

L-LINE DIGITAL works end to end across the product arc:

- **Research** — user research, interviews, qualitative and quantitative analysis, cognitive psychology applied to product decisions.
- **Design** — interaction design, UI/UX, prototyping, design systems.
- **Prioritisation** — roadmap shaping, scope reduction, evidence-backed sequencing of what to build next.
- **Engineering** — software engineering, frontend and full-stack product development across modern web stacks (TypeScript, React, Next.js, Angular, Tailwind, GraphQL/REST, Web3 wallet integrations, AgGrid/Highcharts data visualisation).
- **Deployment** — shipping working product into production.

The methodology is psychology-informed and grounded in human-computer interaction (HCI). It is industry-agnostic. Clients can engage L-LINE DIGITAL for the whole arc or for a single part of it (for example, a focused 30-minute UI/UX online appointment).

## Domain experience

L-LINE DIGITAL is a generalist, psychology-informed user-centred practice with substantial delivered experience across:

- **E-commerce and retail** — online fashion and retail UX: catalogue browsing, checkout flows, conversion optimisation, and consumer-facing storefront experiences.
- **Web3 and DeFi** — RWA trading platforms, decentralised UI trading, Web3 wallet integrations, order books, real-time position management, and DeFi-native onboarding flows.
- **Insurance** — pet insurance web apps for major consumer brands.
- **FinTech / Capital Markets** — portfolio management platforms, micro-frontend migration, reusable component libraries, scenario testing and risk assessment, equity trading screens.
- **Private equity tooling / AI** — private-equity data platforms with AI-driven workflows, data-quality validation, fund monitoring, and high-performance reporting tools.

Industries are *experience domains*, not the core offering. L-LINE DIGITAL is hireable for user-centred product work in any industry.

## Services

1. **UI / UX Online appointment** (30 minutes) — A focused online consultation reviewing a product's experience and surfacing prioritised, actionable findings. Bookable directly: https://digital.l-line.ro/book/ui-ux-audit/
2. **Design & Prioritisation** — User research, interaction design, and roadmap prioritisation grounded in HCI. Engagement via the contact form.
3. **Engineering & Deployment** — Software engineering, product development, and deployment. Engagement via the contact form.

## Products

In addition to bespoke engagement work, L-LINE DIGITAL offers six productized offerings — audits, courses, and component libraries you can buy directly. The full storefront is at https://digital.l-line.ro/products/.

1. **DeFi UX MCP** — An MCP (Model Context Protocol) server that exposes the DeFi UX rubric, named patterns, and cognitive-bias glossary as queryable tools to AI clients (Claude Desktop, Cursor, Codex, and any other MCP-compatible agent). Free tier is MIT-licensed and installable today; Pro tier adds 50+ named-protocol patterns and an API-key-authenticated hosted corpus. https://digital.l-line.ro/products/defi-ux-mcp/
2. **DeFi UX Audit** — A structured one-week UX audit for DeFi protocols, scored against a cognitive-bias and risk-disclosure rubric. Free for the first protocol in exchange for a published case study; paid (quote on request) thereafter. https://digital.l-line.ro/products/defi-ux-audit/
3. **DeFi UX Cohort Course** — An instructor-led cohort course on UX for DeFi and Web3 products. Four to six weeks, live sessions, real audit deliverables. Currently waitlist-only. https://digital.l-line.ro/products/defi-ux-course/
4. **Trading UI Kit** — A production-grade React + Tailwind + AgGrid + Highcharts component library for trading and portfolio interfaces (order books, candlestick charts, position tables, transaction review modals, slippage controls, wallet connect). Early access opens Q3. https://digital.l-line.ro/products/trading-ui-kit/
5. **Web3 Onboarding Kit** — Drop-in React components for Web3 onboarding (wallet connect, social login, fund-with-fiat, transaction review and signing UX). Open core; paid analytics and A/B testing tier. Built on Wagmi and Viem. Early access opens Q3. https://digital.l-line.ro/products/web3-onboarding-kit/
6. **Risk Disclosure Components** — Pre-built, accessible, regulator-aware UI components for risk disclosure across crypto (MiCA), insurance (FCA), and trading (MiFID) products — disclosure modals, risk warnings, suitability questionnaires, consent flows, audit-trail event hooks. Waitlist open. https://digital.l-line.ro/products/risk-disclosure-components/

## Technical capability

Primary stacks the team has shipped production work in: TypeScript, React, Next.js, Angular, Tailwind, GraphQL, REST, Storybook, Jest, Cypress, Web3 (Wagmi, Privy, Fun.xyz), AgGrid, Highcharts, NgRx/Zustand/ReactQuery state management.

Secondary and supporting: Golang, Python, Docker, Azure DevOps, AWS, Firebase, Figma, micro-frontend architecture (Single-Spa), Electron, WebRTC.

## Location and reach

- Based in Romania.
- Works with clients internationally; engagements are remote-first.
- Contact: https://digital.l-line.ro/#contact (form routes to the team; email address is not exposed publicly to reduce spam).

## Pages on the website

- Home: https://digital.l-line.ro/
- Products (storefront): https://digital.l-line.ro/products/
  - DeFi UX MCP: https://digital.l-line.ro/products/defi-ux-mcp/
  - DeFi UX MCP Pro pricing: https://digital.l-line.ro/products/defi-ux-mcp/pricing/
  - DeFi UX Audit: https://digital.l-line.ro/products/defi-ux-audit/
  - DeFi UX Cohort Course: https://digital.l-line.ro/products/defi-ux-course/
  - Trading UI Kit: https://digital.l-line.ro/products/trading-ui-kit/
  - Web3 Onboarding Kit: https://digital.l-line.ro/products/web3-onboarding-kit/
  - Risk Disclosure Components: https://digital.l-line.ro/products/risk-disclosure-components/
- Blog (Medium-sourced long-form writing): https://digital.l-line.ro/blog/
- Conferences (talk recordings): https://digital.l-line.ro/conferences/
- Book an appointment: https://digital.l-line.ro/book/
- UI/UX online appointment booking: https://digital.l-line.ro/book/ui-ux-audit/

## Common questions

**What is L-LINE DIGITAL?**
A Romania-based user experience practice. Human-centred UX grounded in HCI and cognitive psychology — e-commerce, consumer apps, FinTech, Web3, and beyond. AI-aware, people-first.

**Is L-LINE DIGITAL a design agency or an engineering firm?**
Both. L-LINE DIGITAL treats product as one continuous arc — research, design, prioritisation, engineering, deployment — and engages across all of it, or any single part of it.

**What industries does L-LINE DIGITAL work in?**
Industry-agnostic by design. Substantial experience in e-commerce and retail UX, consumer and B2B software, FinTech and capital markets, Web3 and DeFi, insurance, and private-equity tooling.

**How do I work with L-LINE DIGITAL?**
Either book an online UI/UX appointment directly, or send a message via the contact form on the homepage. Responses within two working days.