AI Assistant for Safety-Critical Engineering: Designing Trust in AI

AI Assistant for Safety-Critical Engineering: Designing Trust in AI

How transparency-first design transformed 15,000 scattered documents into conversational intelligence, saving 5,000+ hours

Due to confidentiality, respect of privacy policies, and enterprise compliance, some visuals are recreated or simplified for portfolio purposes. A detailed version is available upon request.

It's 2 AM on an offshore platform. An engineer faces a critical decision that could prevent a catastrophic incident but the answer is somewhere in 15,000 documents spanning multiple time zones and business units.

CONTEXT

Role & Impact

Product Design & Strategy | 8 Months, Oct 2024 - Present | Houston, TX

The Stakes: When 30% of process safety incidents stem from not following proper procedures, missing critical information doesn't just cost time—it risks lives and environmental disasters.

The Transformation:

2,200+ engineers

now access institutional knowledge in seconds instead of hours,

$8M

forecasted time savings and measurably safer decision-making.

forecasted time savings and measurably safer decision-making.

THE PROBLEM

When Critical Safety Data is Buried, Every Second Counts

It's 2 AM on an offshore platform. An engineer faces a decision that could prevent a catastrophic incident—but the answer is buried in 15,000 documents across multiple time zones.

The current reality:

It's 2 AM on an offshore platform. An engineer faces a decision that could prevent a catastrophic incident—but the answer is buried in 15,000 documents across multiple time zones.

The current reality:

start query

Open SharePoint

across 14+ business libraries

Navigate to relevant documents

(if you know where they are)

Ctrl+F through hundreds of PDFs for key terms

hoping you're using the right search terms

Risk:

Missing critical safety information that could prevent incidents

complete query

Average Time:

30+ minutes per query

Average Time:

30+ minutes per query

Risk: Missing critical safety information that could prevent incidents

start query

complete query

Open SharePoint

across 14+ business libraries

Navigate to relevant documents

(if you know where they are)

Ctrl+F through hundreds of PDFs for key terms

hoping you're using the right search terms

Why this matters: 30% of process safety incidents happen because people didn't follow procedures. When engineers can't find the right information fast, people get hurt.

15,000 knowledge assets locked across 14 global businesses. Multiple time zones creating knowledge gaps. Retiring engineers taking decades of knowledge with them.

THE CHALLENGE

The Organization Was Not Ready for This Technology

Cultural: Oil & gas is a traditional industry and cautious to adopt new tech. Seasoned engineers needed to trust AI and integrate it with their established workflow.

Resource: Small team (1 product lead, 1 tech lead, 1 design lead, 2 designers, 7 engineers) solving an enterprise-scale problem.

Data: Each query would have to search through various databases before synthesizing insights across different business contexts and maintaining regulatory compliance. Data wasn't guaranteed to be clean.

Trust: Engineers tested AI with questions they already knew answers to before trusting it. They needed to see the reasoning, not just results, since these answers would inform multimillion-dollar decisions that have large impacts on people, machines, and the environment.

THE SOLUTION

I Led UX Design for Two Features That Changed How Engineers Work

Problem 1: Lost Project Context

The situation: "I can't find my conversation from last week, and now I'm starting over."

Engineers were recreating safety analyses, leading to inconsistent risk assessments.

The solution: Workspaces

  • Project-based organization mirroring how teams actually work

  • Smart filtering by business unit, document type, asset

  • Collaborative workspaces where experts curate knowledge

  • Context preservation so nothing gets lost

Impact: Reduced setup time, eliminated duplicate analysis

Problem 2: Manual Workflows Taking Hours

The situation: "Creating risk reports takes me 6 hours across multiple systems."

Time-intensive reporting meant less frequent safety reviews and delayed responses.

The solution: Agentic Tools

  • Conversational inputs that feel natural but capture precise requirements

  • Chain of thought transparency showing how AI processes requests

  • Automated report generation connecting insights across data sources

  • Preview-first workflow maintaining conversation flow

Impact: 6-hour process → 1-hour workflow, enabling more frequent safety reviews

Preview-first report generation

Chain-of-thought transparency

DESIGN STRATEGY

3 AI-Specific UX Principles That Built Trust

User testing showed engineers interact with AI differently than consumers. They validate before trusting. This shaped my approach:

Trust and Transparency

Uninterrupted Flow

Speed-to-Insight

Visible AI Reasoning

Users don't blindly trust AI, they trust what they understand. Transparency builds confidence, making AI feel less like a black box and more like a trusted partner working in the open.

How I Applied It:

  • Chain of thought interface showing which documents the AI searched and why

  • Source quality indicators helping engineers assess information reliability

  • Editable prompts allowing engineers to refine queries and retry

  • SQL query visibility for structured data requests

Visual Design Decision: Instead of hiding AI processing, I made it the focal point. Engineers could expand reasoning panels to audit every step of the AI's logic.

Trust and Transparency

Uninterrupted Flow

Speed-to-Insight

Visible AI Reasoning

Users don't blindly trust AI, they trust what they understand. Transparency builds confidence, making AI feel less like a black box and more like a trusted partner working in the open.

How I Applied It:

  • Chain of thought interface showing which documents the AI searched and why

  • Source quality indicators helping engineers assess information reliability

  • Editable prompts allowing engineers to refine queries and retry

  • SQL query visibility for structured data requests

Visual Design Decision: Instead of hiding AI processing, I made it the focal point. Engineers could expand reasoning panels to audit every step of the AI's logic.

Trust and Transparency

Uninterrupted Flow

Speed-to-Insight

Visible AI Reasoning

Users don't blindly trust AI, they trust what they understand. Transparency builds confidence, making AI feel less like a black box and more like a trusted partner working in the open.

How I Applied It:

  • Chain of thought interface showing which documents the AI searched and why

  • Source quality indicators helping engineers assess information reliability

  • Editable prompts allowing engineers to refine queries and retry

  • SQL query visibility for structured data requests

Visual Design Decision: Instead of hiding AI processing, I made it the focal point. Engineers could expand reasoning panels to audit every step of the AI's logic.

RESEARCH

Understanding How Engineers Actually Use AI

I ran comprehensive usability testing with oil & gas engineers. Detailed methodology and findings are available in my dedicated research case study, which revealed 3 distinct user types with different needs:

Truth Seekers

Need to see sources and validate reasoning

Design response: Chat

In-text citations, expandable chain of thought

Delegators

Want to hand off tasks but review outputs

Design Response: Agents

Editable previews, structured handoffs between deliverables

Orchestrators

Coordinate team knowledge and context.

Design Response: Workspaces

Collaborative spaces with group filtering

Key insight: Engineers validated AI responses against their expertise before trusting new information. Transparency about limitations actually increased trust.

Competitive research: Studied Perplexity & ChatGPT (conversation organization and history management), Harvey (structured professional workflows), Grok (chain-of-thought transparency), Microsoft Teams & Figma (workspace navigation and collaborative filtering). Adapted patterns for safety-critical engineering needs.

SCALING DESIGN

Built Components and Navigation to Handle Increasing Complexity

Component Library

Moved from Sketch/Zeplin to Figma as strategic product thinking. Built responsive components handling both simple chat and complex workflows.

Impact: Faster iteration from idea to prototype to development. Rapid testing of new AI capabilities. Consistency across complexity.

Information Architecture

Platform risked becoming overwhelming as we added features. Redesigned navigation to handle complexity while keeping the prompt bar central as a stable anchor.

Principle: Deceptive simplicity, complex capabilities through intuitive interfaces.

V1 - simple but difficult to separate workspaces vs. chats

V2 - separated but having 2 "new" buttons disrupts hierarchy

V3 - good hierarchy but with large history, too busy and difficult to navigate

V4 - filterable to sort different activities and large history but adds cognitive load

V5 - filterable and straightforward labeling to reduce cognitive load

IMPACT

Results That Changed Company Strategy

2,200+

users onboarded

1,000+

weekly queries

15 second

average response time

MULTI QUERY WORKLFOWS

supported for complex engineering scenarios

20%

performance improvement for senior staff

$8M

in time-savings forcasted for Year 1

5,000+

hours saved across teams

40%

performance improvement for junior staff

Strategic recognition: Featured at Capital Markets Day 2025 as flagship AI capability. Influenced roadmap to prioritize agentic workflows. Contributed to press releases as one of four apps accelerating energy production.

What Users Said

Engineer:

"This saved me a day's worth of work—and I did it in an hour. I just ran the agent on a document and it cleaned up my contract by spotting inconsistencies I would have missed."

Subject Matter Expert:

"For the first time, junior engineers can access the same institutional knowledge that took me 20 years to accumulate."

2,200+

users onboarded

1,000+

weekly queries

15 second

average response time

MULTI QUERY WORKLFOWS

supported for complex engineering scenarios

20%

performance improvement for senior staff

$8M

in time-savings forcasted for Year 1

5,000+

hours saved across teams

40%

performance improvement for junior staff

LEARNINGS

I Learned That Trust Comes From Visibility & Domain Understanding Shapes Interface Logic

Trust comes from visibility, not perfection

Engineers cared more about verifying how answers were derived than speed. Transparency built confidence.

Making complexity feel effortless

Conversational workflows balanced natural dialogue with technical precision. The goal was clarity—navigating complexity without friction.

Design systems accelerate velocity

Modular components enabled rapid iteration and experimentation, not just consistency.

Domain expertise shapes interface logic

My engineering background helped me speak users' language. I understood their workflows and data relationships, designing interfaces matching how they process information.

Enterprise AI users are unlike typical AI consumers

Designing for a traditional industry required balancing innovation with rigor, safety, and accountability. Success came from earning trust through clarity.

WHAT'S NEXT

Scaling Intelligence Across Engineering Workflows

I'm continuing to collaborate with engineers and experts to translate additional specialized workflows into AI-powered experiences. The goal remains the same: don't lose clarity, trust, or control while making critical knowledge instantly accessible.