Joy Chatterjee

DCMN

Specialize in developing end-to-end ML infrastructures and solutions to tackle complex marketing challenges.

Work with and integrate advanced platforms such as Codeium, Cursor AI, ChatGPT, replicate.ai, fal.ai and many more to streamline research and accelerate development. Off and on designing scalable pipelines on native and cloud platforms, to activate real-time predictive models, time series forecasting, customer segmentation, ROI optimization and more.

Lead AI Engineer

- Led the project for multivariate time series forecasting of client campaigns, resulting in significant insights in ROI for TV campaigns.
- Implemented LLM-based chatbots for internal teams, using RAG architectures and context
tuning models.

Senior Data Scientist

The Joy of Data

Product Ops & Data Consultant, with over 10 years of experience in data science and three years in product led growth (PLG). Founder of The Joy of Data, based in Berlin.

For data, collaborative ventures with Mercedes, FedEx, Just Mad as well as AI startups such as brighter AI, DCMN focussing primarily into leveraging data for strategic product led growth.

For product, over the past three years, been a data partner for product teams. Responsible for boosting Product Led Growth (PLG) strategies through the application of data science methodologies and data analytics. Expertise domain includes proficiency in product operations, OKRs, KPI driver trees, cohort analysis, user segmentation and much more.

Founder

ShowHeroes Group

Data Scientist (In House Consulting)

brighter AI

Data Scientist

Data Engineer

Mercedes-Benz Research & Development North America, Inc.

Mavrx Inc.

Working on specific project oriented machine vision tasks to aid the system of smart farming techniques developed and monitored by Mavrx Inc.

Machine Learning Engineer

MARKABLE

Rochester Institute of Technology

Work at the lab mainly revolves around projects in the genre of algorithm development. The algorithms are aimed at solving various problems from the image processing and computer vision communities.

Graduate Research Assistant

Peer Advisor Leader

CESC Ltd.

Worked with a team of four to establish and implement control algorithms to modulate the outlet steam efficiency of the central boiler system in a thermal power plant.

Technical Intern

🌱 Founder, The Joy of Data 🎯 Helping Product Teams Grow With Data Science 🚀 Ex-Mercedes | Lead Data Scientist 🎙️ Speaker, Podcasts, YouTube

🚀 Lead AI Research Engineer | Data Science Expert | Product Coach 🚀

With over 11 years in Data Science and AI, I specialize in developing innovative, Data-Driven and AI solutions that elevate Product performance and drive Business Growth. I bring a unique blend of hands-on technical skills and strategic Product insight, supporting teams to leverage Data for informed decision-making and robust growth strategies.

🔹 Key Highlights:
	•	LLMs & Chatbots: Implemented advanced LLM-based chatbots with RAG architectures, boosting team efficiency and workflow.
	•	Predictive Analytics: Achieved a significant ROI increase on client TV campaigns through multivariate time series forecasting.
	•	MLOps & Automation: Created scalable pipelines with Docker & Kubernetes, ensuring seamless deployment and monitoring.
	•	Patented Innovations: Primary author on two patented ML technologies, focusing on object tracking and anonymization.
	•	Cross-functional Leadership: Successfully lead teams and mentor junior Data Scientists, ensuring collaborative, data-driven decision-making.

🔹 Technical Arsenal:
Python 🐍 | SQL 🗃️ | Big Data Ecosystems | Statistical Modelling 📊 | A/B Testing | Cloud Environments (AWS, Azure)

🎙️ Speaking Engagements :
An avid speaker at prestigious Data Science and AI conferences over the past two years, where he shares his insights and experiences to foster a collaborative and informed Data Science community.

Lead Data Scientist

Pavle Lucic

Senior UI/UX Designer @ Toptal | Prototyping, Branding, UI Development

I am a Senior UI/UX Designer at Toptal, a network of the world's top 3% of software engineering, design, and finance talent. With over 10 years of experience in the design industry, I have a proven track record of creating visually engaging and user-friendly interfaces for in-car navigation systems, SaaS apps, and marketing websites.

My background in business and economics gives me a unique perspective on how to design UX and UI that are not only aesthetically pleasing, but also functional, efficient, and user-friendly. I am passionate about solving complex problems, collaborating with diverse teams, and learning new skills. I am also Adwords Search Certified, which demonstrates my ability to optimize the online presence and performance of my clients. My goal is to help tech companies increase their revenue by improving the user experience of their products.

Senior UI/UX Desiger

This is how I work now:

1. Think
2. Write
3. Plan
4. Ask
5. Wait
6. Then design

It’s slower. But it works.

Because UX isn’t just what you make.
It’s what you understand first.

(Repost ♻️)

P.S. What is your process?

Senior UI/UX Product Designer | UX Strategy | Figma

No alternative text description for this image

Most designers aren't designers.

(they're technicians who happen to use design tools)

Yesterday I lost 2 hours on a shelf.

Just me obsessing over form and function.
And here's the thing...

That "is" design.

Not the logo you send on Friday.
Not the mockup in your portfolio.
Not the deliverable in your inbox.

Design is how you "think."

- How you can't ignore a bad detail.
- How you see a room and want to fix it.
- How you solve problems no one asked you to solve.

Just think about this:

1. The Bauhaus school understood this.
↳ They didn't teach "tools." They taught living.

2. Japanese carpenters understood this.
↳ No nails. No shortcuts. Every cut is intentional.

Design is form.
Design is function.
Design is creation.

It doesn't "clock in and out."

If you only design when you open your laptop...
And stop when you close it...

You're not a designer.
You're a technician who uses design tools.

Nothing wrong with that.

Just don't confuse the two.

P.S. Agree or disagree? 👇

This might be a controversial post but it's true.

I don't have a formal design degree.

I'm pretty sure a lot of self-taught designers experience this too.

Examples:

Every time I share my work online, someone asks "where did you study?"
I can feel the judgment coming.

Every time I'm in a room with "formally trained" designers.
I hear the whispers: "They probably just watch YouTube tutorials."

Every portfolio review, every job interview, someone implies "you're not a real designer without the credentials."

But then...They see just ONE of my projects and:

That skepticism closes immediately
I get genuine compliments in my DMs
I get referrals + new client inquiries

So...

Why do we judge credentials before we judge the work?
Especially with creative fields? 😊

Fear that talent and hustle might matter more than a piece of paper. 
Which, honestly, they often do.

To my fellow self-taught designers who've "made it work" I love you. 

Keep building. Keep proving that skills speak louder than diplomas.

Keep letting your work change people's minds. It's worth it.

Pavle ❤️

Loading states matter.

Blank screen = user thinks it's broken.

Progress bar = user knows how long.
Spinner = user knows something's happening.
Skeleton screen = user sees structure forming.
Instant feedback = user doesn't notice the wait.
Steps = user knows where they are ("Step 2 of 4").
Active waiting = user is entertained while waiting (tips, facts).

Never leave users guessing.

Show them the system is working.
Even if it takes time, show progress.

(Repost further ♻️)

17 genuine tips for using illustrations to improve UX

(I wish someone told me number 8 sooner)

1. Empty states feel less scary
2. Error messages feel friendlier
3. Users remember visuals 6x better
4. Onboarding completes 40% more
5. They reduce mental effort instantly
6. They help users know where they are
7. You will add illustrations way too soon
8. They reduce support tickets by 30-40%
9. Permission requests make more sense
10. Complex steps feel simpler with visuals
11. They answer questions before users ask
12. Visual metaphors beat long explanations
13. Users understand faster than reading text
14. They build trust during frustrating moments
15. Empty spaces feel intentional instead of broken
16. They guide without overwhelming with instructions
17. Strategic placement turns confusion into confidence

Repost this free value for others ♻️ Thank you!

P.S. Hey, which one (1-17) do you like most?

If there's one thing I'd eliminate in UX design...

It's birthday pickers like this. You know the ones:

1. Scroll wheels flicking through 40+ years to find 1986
2. Calendar grids tapping "previous month" 480 times
3. Three separate dropdowns, praying the order is right

There's a much better way.

It's called "TIF = Text Input First". 
Rooted in real behavior.
Backed by research. 

TIF is simple:

1. Let users type their birthday
2. Auto-format date as they go
3. Offer a picker as backup only

Why it works:

People know their birthday by heart.
Typing takes 2 seconds.

Scrolling through a picker takes 15+ seconds of frustration.

Hope this helps! (Repost if so ♻️)

P.S. Anything worse than a scroll-wheel date picker?

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I was in a meeting last week.

One designer talked for 60 of them.

References to everything. 
"What if we..." on repeat.

Opinions on everything.

Loud. 
Confident. 
Influential.

Everyone nodded along.

Then someone asked:
"So who's going to build this?"

Silence.

The loud one? 
"I'm more of a strategy person."

The quiet one in the corner?

She opened Figma.
Had 3 options ready.
Built while they debated.

That's when I realized:

The best designer in the room?
Often the one who says the least.

Repost this ♻️ if you've seen this happen too.

A client came to me with a "broken" product. 

Here's what happened:

They spent 8 months building an app.

It worked perfectly. But nobody used it.

Refund requests? Daily. 
App store reviews? 2.1 stars.
Support tickets? 200+ per week. 

They thought the product was broken.

It wasn't.
The design was.

I changed 5 things:

1. Moved the main CTA
2. Simplified the onboarding
3. Fixed the mobile navigation
4. Added visual feedback on buttons
5. Reduced the menu from 15 items to 4

4 weeks later?

Retention doubled.
Reviews jumped to 4.4 stars. 
Support tickets dropped 73%. 

Same code. Same product. Same features. 

I didn't "make it pretty."
I made it usable.

That's what designers actually do.

Repost ♻️ if this changed how you see design.

P.S. Have you ever blamed your product when design was the problem? 😊

Good UX is boring.

Users complete tasks without thinking.

They don't notice the design. They just finish.

Bad UX is memorable.
Users remember frustration. Confusion. Friction.

Stop trying to impress users.

The best interfaces are simple.

P.S. When was the last time you noticed good UX?

My first client ever:

"Make the logo bigger."

Quoted Steve Jobs.
I argued for 20 minutes. 
Sent 5 articles about white space. 

They made it bigger themselves in PowerPoint.

My latest client:
"Make the logo bigger."

I said: "Let's test it. I'll send you 2 versions. You pick."
They picked the smaller one.

What changed?

I stopped convincing. 
I started collaborating.

People don't resist ideas. They resist being told what to do.

Give them ownership. 
Watch them choose wisely.

♻️ Repost if you wish you knew this earlier.

Entry-level means no experience.

It's for juniors to begin their careers, learn, and grow.

Yet job posts say:

"Entry-level position"
"Requirements: 3-5 years experience"

That's not entry-level. That's mid-level.

Stop lying in job descriptions.
You're not finding candidates because you're asking for the impossible.

Entry-level = zero experience required.

If you need experience, it's not entry-level.

(Repost for job seekers ♻️)

P.S. Have you seen this contradiction in job posts?

Mini-masterclass on receiving design feedback:

(save this for your next critique)

Well-delivered feedback = great insight
Well-received feedback = great growth

That being said... Let's dive into 5 levels of receiving feedback:

Level 1: Defensive 
↳ "But here's why I did it this way..." 
↳ You're protecting ego, not improving work

Level 2: Silent 
↳ You nod. You take notes. You change nothing. 
↳ Feedback theater. Everyone sees through it.

Level 3: Selective 
↳ You only hear what confirms your choices 
↳ Cherry-picking isn't growth

Level 4: Receptive 
↳ You listen. You ask questions. You implement. 
↳ This is where most good designers live.

Level 5: Hungry 
↳ You seek feedback before anyone offers it 
↳ "What's not working? Where did you struggle?" 
↳ This is where great designers live.

Getting feedback is a skill. Just like giving it.

And most of us never practiced receiving.
We just practiced defending.

Time to switch.

Repost this ♻️ for your design team.

P.S. What level are you at right now (1-5)? No judgment 👇

7 prototyping rules I wish someone told me earlier.

(would've saved me months)

1. Ugly is fine
↳ You're testing the idea, not the aesthetics.

2. Speed beats polish
↳ A prototype in 3 hours > a mockup in 3 weeks.

3. Real users, not teammates
↳ Your team already knows too much.

4. One question per prototype
↳ "Does this solve the problem?" That's it.

5. Kill bad ideas early
↳ A failed prototype costs you a day. A failed product costs you a year.

6. Don't fall in love with version 1
↳ The first prototype is a conversation starter. Not the final answer.

7. Prototype the riskiest part first
↳ Start where you're least certain.

Prototyping isn't a step you "skip."

It's the step that saves everything after it.

Happy building ✌️

P.S. Which rule above hits hardest for you? (1-7)

Old design workflow:

1. Sketch idea
2. Open Figma
3. Design for hours
4. Export and code
5. Test and iterate

New workflow with Claude:

1. Describe idea to Claude
2. Claude codes it fast
3. See design instantly
4. Iterate with prompts
5. Ship faster

I made glass icon effects this way.

No design tools. 
Just conversation.

The bottleneck shifted from execution to clarity of thought.

Can you describe what you want clearly?

That's the new design skill.

(Repost this shift ♻️)

P.S. How has your workflow changed with AI?

I just found out the best color generator for designers.

uicolors. app/generate

Save it for later or repost ♻️

Three reasons Inter dominates:

It's variable

One font file. 
It's optimized.
Multiple widths. 
Multiple weights. 
Smaller load times.

Letter spacing, x-height, character distinction all tuned for screens.

It's free
No legal.
No licensing. 
No procurement. 
Just download and use.

Hard to compete with that combination.

P.S. What font makes your product memorable?

Here's the biggest lesson my son taught me:

Yesterday, I cut my finger.

He saw blood. He didn't freeze. He didn't cry.

He ran to get a napkin. 
Wrapped it around my finger. 
Taped it with whatever he found.

Then he grabbed a pen.

And drew a little stick figure on the bandage.
A tiny man.

"That's you, daddy. So you're not alone."

I looked at this ridiculous napkin-bandage. 
Tape peeling off. 
Little man with "hair".

This is what support actually looks like.

Show up. With what you have. 
And make sure they know they're not alone.

That little stick figure?

Best medicine I ever got.

Repost this ♻️ to spread a good message today.

Feedback feels personal.

It's not.

They're critiquing your design. Not you.

Hard to separate:

"This button is unclear" = design feedback
"You made this unclear" = feels like attack
Same words. Different interpretation.

Train yourself to hear:

"The layout is confusing" not "You're confused"
"This needs work" not "You're not good enough"
"Try another approach" not "You failed"

Your design is separate from your worth.

(Repost if this resonates ♻️)

P.S. Does feedback feel personal to you?

taplio

The Battle

Joy Chatterjee

Pavle Lucic

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taplio

The Battle

Joy Chatterjee

Pavle Lucic

Followers

Posts

Engagements

Likes

Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Pavle Lucic's LinkedIn Performance

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