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Case Study

One Designer. Nine Months. An Entire Enterprise Product.

A barebones notes viewer became the research management system that hedge funds are migrating to — displacing tools that have been shipping for a decade. 100+ screens. 9 feature areas. 33K+ notes trusted to the platform by real clients.

Rounak Sengupta · Product Designer · Arcana
9
months
9
feature areas
100+
screens designed
8+
enterprise clients
33K+
notes in production
Role
Solo designer — end-to-end ownership across research, IA, interaction design, prototyping, and engineering handoff
Scope
9 months, 9 feature areas, 100+ screens across a unified product architecture spanning web and iOS
Key challenge
Build an enterprise research operating system from a blank canvas — with no prior design, no design system, and incumbents who had been shipping for a decade
Outcome
Displaced Bipsync, Verity, and EDS at 8+ hedge fund clients; 33K+ notes migrated into production

Context

Product Context

Arcana is a financial analytics platform used by hedge funds and asset managers. The platform handled portfolio analytics, risk decomposition, and factor modeling. But clients kept asking the same question: “Where do we put our research?”

The problem was not a missing feature. It was fragmented workflows across competing platforms. Analysts maintained research in Outlook inboxes, OneNote notebooks, Word docs, Slack threads, and dedicated RMS tools like Bipsync and Verity. None of these systems talked to each other, and none were connected to the portfolio data Arcana already provided. Notes weren’t linked to tickers or positions. Search failed at scale. Emails with critical sell-side research sat untagged and unsearchable. Meeting notes couldn’t be tied to calendar events. There was no pipeline to track ideas from thesis to execution, and no intelligence layer to surface patterns across thousands of documents.

The design challenge was to pull these scattered workflows into one research operating system: notes, templates, search, email ingestion, calendar, collaboration, AI intelligence, and CRM-like workflow tracking for contacts, meetings, and pipeline. The product had to be good enough that firms would migrate tens of thousands of notes away from tools they’d used for a decade.

Why This Mattered

Business Relevance

Hedge funds arrived at Arcana for portfolio analytics. The research workflow question kept surfacing in calls because incumbents — Bipsync, Verity, EDS — were standalone tools with no connection to live portfolio data. Firms were paying for two separate systems and manually bridging them.

The opportunity was to use Arcana’s native portfolio and market data layer as a competitive advantage. Because RMS was being built on the same platform, notes could be linked directly to positions, tickers, and risk data that no standalone competitor could match. The displacement opportunity existed because the connection between research workflows and the broader investment platform had never been solved.

Design Strategy

RMS as an Operating Layer

The chosen direction treated RMS as an operating layer beneath the whole platform rather than a pile of adjacent tools. Each of the 9 feature areas had to stand on its own: a firm could adopt just email ingestion, or just the calendar, or just search. The system design made sure that, used together, they reinforced each other.

The risk of the alternative approach — shipping disconnected modules incrementally — was a product that felt bolted on rather than built in. The design decisions across notes architecture, field taxonomy, sharing model, and search were made with the full system model in mind, because the cost of re-architecting core structures after client migrations would have been prohibitive.

Transformation

Platform Transformation

August 2025

  • Flat list of notes with a basic text viewer
  • No note types, no templates, no metadata
  • No search beyond basic text matching
  • No file management, no collaboration tools
  • No integrations (email, calendar, OneNote, Teams)
  • No AI layer, no pipeline tracking
  • Zero enterprise clients using it for research
→

May 2026

  • Full RMS with typed templates, conditional fields, rule engine
  • Comments, threading, audit trails, pipeline stages
  • Custom field filters with AND/OR compound logic
  • Outlook email sync, Microsoft Teams integration
  • AI intelligence layer: chat, summaries, semantic search
  • Calendar with earnings, macro events, shared calendars
  • 8+ enterprise clients, 33K+ notes, firms migrating in

Execution Timeline

9 Months, 5 Phases

Each phase built on the last. The product got more complex, but the design system and component library established in phase one meant each new feature started further ahead. By month 6, entire feature areas that would have taken a month at the start were shipping in a week.

Aug – Oct 2025 · Foundation
RMS Core — Notes, Templates, and Sharing
The notes system was designed from scratch: typed templates with structured metadata fields, hierarchical Note Type / Sub Note Type taxonomy (modeled after what firms had in Bipsync and Verity), Private / Team / Firm sharing model, admin panel for firm-level configuration, and a file management module. Threaded comments for team collaboration, an audit trail for PM visibility, and pipeline stages for tracking ideas from thesis to execution. The iOS app for mobile note creation shipped in parallel.
Notes System Templates & Fields Comments & Threading Sharing Model Pipeline Stages Admin Panel iOS App
Nov 2025 – Jan 2026 · Scale
Client Migrations & Ingestion Pipeline
Real clients with real data: D1 Capital (40K notes), Eagle (from Verity), Longaeva (from Bipsync). The Note Ingestion Playbook was developed through this phase — a process document covering field mapping, derivative logic, attachment manifests, test-org-first validation, and production rollout. Early migration failures (Excel truncation, S3 permission gaps, incorrect attachment mapping) were the source material; the playbook codified how to prevent them.
Ingestion Playbook D1 Capital Migration Eagle/Verity Migration Attachment Handling
Feb – Mar 2026 · Intelligence
Search, Filters, AI & Teams
33,000+ notes in production exposed every weakness in the search system: naive tokenization, no relevance ranking, no phrase search. Root causes were documented from client complaints and a fix roadmap was defined. In parallel: a compound filter system for 30–40+ custom fields per org with AND/OR logic and type-specific operators. The AI intelligence layer (Arcana Ask) followed — a chat interface querying the entire notes corpus, generating summaries with source citations, and surfacing connections across thousands of research documents. A Microsoft Teams integration for @-mention-triggered note creation from channel threads shipped in the same phase.
Custom Fields Filter AI Intelligence / Ask Search Improvement Teams Integration Rule Engine
Apr 2026 · Integrations
Outlook Email Integration
Email sync was flagged as “super high priority” by the CEO. The design direction established a dedicated Emails tab — a separate entity type from Notes, private by default, with automatic ticker auto-detection (regex on subject lines) and sender domain tagging. Full Microsoft Graph API sync ingesting 200–500 emails/day per user with zero ongoing effort. The privacy model was the central design decision: always private, with per-email sharing opt-in, because the alternative would have made adoption impossible in firms where email confidentiality is a compliance requirement.
Emails Tab OAuth Flow Ticker Auto-Detection Privacy Model
Apr – May 2026 · Convergence
Single Stock View — Research Meets Market Data
A unified per-ticker research hub connecting RMS notes to live financial data. Five views (Charts, News, Transcripts, Financials, Files) share the same ticker context. The key direction: inline editable analyst estimates with delta badges against consensus, turning a reference view into an active thinking tool. 10 years of financial data and 33K+ notes surfaced contextually — every note written in RMS makes every view more useful.
Single Stock View Financials Tab Inline Estimates Transcripts Viewer RMS × Charts
May 2026 · Expansion
Calendar, Transcripts & the Intelligence Hub
Calendar integration aggregating personal calendars (Outlook/Google), Arcana’s earnings calendar, macro economic events, and firm shared calendars — with one-note-per-event, ticker filtering, and conflict detection. 7 interactive prototypes, a 42-note design system, and a production dev handoff package delivered in 7 days. The platform was converging toward an enterprise intelligence layer — every signal in one place.
Calendar (7 prototypes) Earnings Calendar Macro Events Shared Calendars Transcripts Viewer

System Architecture

9 Feature Areas. One Designer.

Each feature area below was covered end-to-end: competitive analysis, information architecture, interaction design, prototyping, and production specs for engineering handoff. The design challenge across each area was not just what to surface, but how it connected to the rest of the system — because decisions made in the notes architecture affected how search, email, AI, and calendar would function downstream.

🗃
Notes & Templates
Typed templates, conditional fields, hierarchical sub-note types, rule engine. The backbone of the entire product.
🔍
Search & Filters
Full-text search at 33K+ scale. Custom field filter with compound AND/OR logic across 40+ fields per org.
🧠
AI Intelligence
Chat interface over the notes corpus. Generative summaries with source citations. Semantic search across thousands of documents.
📧
Email Integration
Outlook full mailbox sync via Graph API. Auto-ticker detection, domain tagging, private-by-default. Zero config.
📅
Calendar
Personal + earnings + macro + shared calendars. 4 views, conflict detection, one-note-per-event. 7 prototypes.
💬
Collaboration
Threaded comments on notes, audit trails, viewership logs. Pipeline stages for tracking ideas from thesis to execution.
🔗
Integrations
Microsoft Teams (@-mention note creation), OneNote sync, SharePoint, OneDrive, Outlook Add-In, SDK/API.
📁
Files & Documents
Document library with firm-wide search, attachment management, and cross-platform file sync.
🔄
Migration Pipeline
Ingestion playbook for Bipsync, Verity, and custom systems. Bulk + automated SFTP paths. 3 successful migrations.

Competitive Context

Where to Be Familiar, Where to Differentiate

Every feature area began with a structured product audit. Bipsync, Verity, EDS, AlphaSense, and FactSet were analyzed across email ingestion, calendar integration, search, templates, AI, mobile, and portfolio connectivity. The analysis served two purposes: identifying gaps where incumbents were weak, and recognizing patterns familiar enough to users that deviating from them would create friction without benefit.

The decision framework was not about matching feature for feature. It was about choosing where familiarity would accelerate adoption (note types, pipeline stages, shared templates) and where differentiation would create durable competitive advantage (native portfolio integration, zero-config email sync, AI over the full research corpus). Each of those choices is traceable in the feature architecture.

Dimension Bipsync Verity EDS Arcana
Email ingestion Outlook plugin + AI Mail Classifier Outlook add-in (manual deposit) Outlook add-in Full mailbox sync, zero config
Custom field filters Admin-defined filter shortcuts Basic type/tag filtering AI-driven classification Rule builder, AND/OR, 6 field types
Calendar Day/Week/Month + Rules Engine Wall Street Horizon + Outlook sync None documented Earnings + macro + shared + personal
Portfolio integration None Limited Quantitative models Native — notes linked to positions
AI intelligence layer None None LinqAlpha partnership (limited) Native chat, summaries, citations
Teams / Slack integration None documented None documented None documented @mention creates note from thread
Migration from competitors — — — Documented playbook, 3 migrations done

Design Considerations

Tradeoffs

Platform-scale product design is a sequence of tradeoffs. These were the recurring tensions across the 9-month build.

Role & Collaboration

Where Led, Where Partnered

The solo designer role meant owning the full design surface — from competitive research and information architecture to interaction design, prototyping, and engineering handoff. There was no design team to delegate to, no design lead to escalate to. Every decision at the design layer was a direct output of this role.

The collaboration model was tightly integrated with the PM. Product direction, PRD development, and competitive analysis were joint outputs. The design thinking was embedded in the product specs before Figma was opened, because the decisions that mattered most were made at the requirements layer, well before the visual one. Engineering handoff went past screens to interaction specs, edge-case matrices, and state documentation.

Stakeholder alignment happened through working prototypes rather than static presentations. Because the product had no prior design precedent, HTML prototypes at key decision points were more effective at building shared understanding than slides. The calendar feature went from concept to production handoff in 7 days using this approach.

Product Strategy & Specifications

7 PRDs Shaped

The design role extended to product specification. Each PRD below incorporates competitive teardowns, user workflows, interaction specs, edge case matrices, and design rationale. These are not design-only documents — they are the full product specs engineering builds from, with product direction and design thinking embedded throughout.

Design Deep Dives

Featured Deep Dives

Each card below is a standalone case study covering a specific design challenge. Each one traces the problem, the decision framework, and the outcome.

Scale
Calendar — Zero to Handoff in 7 Days
7 interactive prototypes, a 42-note design system, and a production dev handoff package. The sprint that proved AI-assisted design can ship in days, not weeks.
✓ Complete
Craft + Scale
Search & Filtering at Scale
33K notes broke naive search. How I diagnosed the problem from client complaints and designed a type-aware rule builder for 40+ custom fields.
○ Coming soon
Craft
Email as Intelligence Layer
Turning 200–500 daily emails from noise into searchable, ticker-tagged research — with zero user effort and a privacy-first model.
○ Coming soon
Craft
Notes & Template Architecture
Designing a flexible metadata system that adapts to each firm’s taxonomy: conditional fields, rule engine, sub-note types, pipeline stages.
○ Coming soon
Craft
Where Research Meets the Market
A single stock research hub connecting 33K+ RMS notes to live financial data. 5 views, inline estimates, and the multiplier effect of structured research.
✓ Complete
Craft + Scale
AI Intelligence Layer
Chat interface over 33K+ notes. Generative summaries with source citations. The feature that made competitors look a generation behind in client demos.
○ Coming soon

Outcome Signals

What the Numbers Say

1
Solo designer, full product
End-to-end design ownership across 9 feature areas: research, competitive analysis, IA, interaction design, prototyping, and handoff
9
Feature areas shipped
Notes, search, email, calendar, AI, collaboration, integrations, files, migration pipeline
33K+
Notes in production
Migrated from Bipsync, Verity, and custom systems. Clients trusted us with their entire research corpus.
8+
Enterprise clients
Hedge funds and asset managers actively using RMS or migrating from incumbent tools
100+
Screens in Figma
20+ feature sections across web and iOS. 7 interactive HTML prototypes for the calendar alone.
4
Competitors displaced
Firms switching from Bipsync, Verity, EDS, and internal tools. Active migrations in progress.

The takeaway

The hard part was never a single screen. It was turning the scattered research habits of eight different desks into one workflow they'd actually adopt — without flattening what made each of them distinct.

Design Rationale & Lessons

What the Work Taught

Nine months. Nine feature areas. One designer embedded in every decision from customer call to engineering handoff. The product is not a set of screens. It is a system of decisions that compounds at enterprise scale.

What I Would Present

In a portfolio presentation, the focus would be on three decisions: how the system model was defined across 9 feature areas, how competitive gaps informed product differentiation rather than just feature parity, and how AI-assisted workflows were integrated without fragmenting the research experience or compromising analyst trust in sourced information.

Deep dive →
Zero to production handoff in 7 days
The calendar sprint, end to end.
Deep dive →
Where research meets the market
The single stock research hub.