Himangshu Hazarika
UI/UX Product Designer
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Himangshu
Hazarika

UI/UX + Product Designer — co-running The Design Walas.

I design and build digital products that actually work for the business behind them.

Himangshu Hazarika

SEC/02 CASE STUDIES

Case Studies

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NeerTrack Case Study
◈ UX Case Study · Jorhat, Assam · 2025

When water
runs on silence.

NeerTrack is a civic digital product designed to bridge the communication gap between Jorhat residents and their water utility — turning anxiety into awareness.

RoleUI/UX Designer
PlatformAndroid Mobile
Duration14-Day Sprint
MethodsDouble Diamond · Design Thinking
💧
<20
survey responses from Jorhat residents. Directional, not statistically representative
📣
4
personas built from the survey, each with a different morning routine
⏳
14
days from survey to final screens. A concept, not a deployed product

"We only knew when it was too late — the water was already gone."

— Survey respondent · Jorhat, Assam · 2025

Phase 01 — Discover

The problem wasn't water.
It was the silence around it.

In Jorhat — a Tier 4 city in Assam — the local water utility communicates through phone calls and outdated website notices. Residents wake up not knowing if water will come, how long it will last, or what quality it will be.

⏰
Water Outages Without Warning
Supply disappears without advance notice. Residents discover the outage only when they turn the tap.
💸
Paying More for Less
"Even with low quality service we have to pay higher amounts." Residents report above-normal charges.
⚙️
Faulty Infrastructure, No Updates
Broken filter machines and aging pipes cause quality degradation with no status communication.
📵
No Reporting Channel
Residents who want to report leaks have no clear digital channel. Phone calls go unanswered.
💪
High-Wattage Motor Inequity
Wealthier households use large motors, leaving lower-income areas without adequate supply.
🌊
Deteriorating Source Quality
The river source is degrading over time, with residents having no visibility into quality data.
Phase 01 — Research Methods

What the residents actually said — and what they didn't.

A small online survey (fewer than 20 responses) of Jorhat residents aged 30–70: working professionals, homemakers and wage workers. Findings are directional, not statistically representative.

📋 Survey Goals

  • What is causing the water supply problem in Jorhat specifically?
  • Main pain points and daily frustrations of residents
  • Whether the problem is systemic or zone-specific
  • How the utility currently manages complaints

💡 Key Insights Surfaced

"We missed this time also." — on irregular water windows
"We only knew when it's too late."
  • Monitoring system + alert feature ranked highest in resident wish lists
  • Motor inequity is a socioeconomic equity issue, not just technical
Phase 01 — Synthesis

Affinity mapping: four clusters, four design solutions.

Raw survey responses were grouped into behavioural clusters. Each cluster directly maps to a design intervention.

Cluster 01
No timely distribution
"We missed this time also."
→ Alert feature
Cluster 02
High charges, low quality
"Even with low quality we pay higher amounts."
→ Monitoring + analytics
Cluster 03
Faulty filter machines
"Authority is unable to repair the machines."
→ Status notifications
Cluster 04
Motor inequity problem
"Higher wattage motors consume most of the water."
→ Report feature
Phase 01 — Empathy

Inside the mind of a Jorhat resident on a water outage morning.

Synthesised from open-ended survey responses and lived experience patterns across participant types.

Think / Feel
  • Will water come today? (anxious)
  • Even if water is there, quality is poor.
  • What if there's no water tomorrow?
See
  • Frustrated residents making phone calls
  • Empty buckets waiting at 6am
  • WhatsApp groups flooded with "no water"
Hear
  • "No water today."
  • "Supply period was short again."
  • "Poor quality, don't use it."
Say / Do
  • Buying large water bottles from market
  • Calling utility helpline (rarely answered)
  • Waiting — "a waste of time."
Phase 02 — Define

Four people. Four different ways the problem destroys a morning.

Personas built directly from survey demographic data and behavioral patterns.

👨‍💼
Rituraj Bora
Businessman · Mid-50s

Due to a busy schedule, he cannot manage water storage. Poor water quality means buying bottled water frequently.

Pain: Paying premium for delivered water while still paying full utility bills.
👩‍🍳
Sweta Gogoi
Homemaker · Late 40s

Manages the entire household water routine. Irregular supply leads to frustrated mornings.

Pain: No advance warning means no backup planning for daily chores.
👷
Rupam Das
Wage Worker · Late 40s

Depends on morning water supply to get ready for work. Pipe leakage makes storage difficult.

Pain: Late to work waiting for water. No way to report the local pipe leak.
🎓
Bitupan Ghosh
Student · Around 24

Irregular supply disrupts basic routines. Most tech-savvy persona — fastest to adopt a mobile solution.

Pain: Regularly late to college due to water uncertainty each morning.
Phase 02 — Define

Point of view statements → How might we questions.

Each persona translated into a POV, then into a design-actionable HMW question — the north stars guiding every feature decision.

Rupam Das · Wage Worker

Rupam struggles to get to work on time because unpredictable water supply forces him to wait without knowing how long.

How might we alert Rupam in advance about distribution time so he can plan his commute?
Sweta Gogoi · Homemaker

Sweta is unable to complete household chores because she cannot predict when water will arrive.

How might we help Sweta know in advance about outages so she can prepare storage?
Rituraj Bora · Businessman

Rituraj cannot trust the water quality, leading to significant extra household expense on bottled water.

How might we help Rituraj's family know clearly whether today's water is safe?
Bitupan Ghosh · Student

Bitupan gets late to college because he has no way to check water status before his morning routine.

How might we give Bitupan a reliable, at-a-glance morning water status check?
Core UX Problem

Jorhat residents lack a reliable, real-time communication channel with their water utility — creating daily anxiety, financial waste, and a feeling of complete helplessness.

The goal: design a digital solution that gives residents proactive supply information, a trusted reporting channel, and enough transparency to feel in control — even when the water doesn't come.

Phase 02 — Market Research

What competitors do well — and the gap NeerTrack fills.

Five existing water management platforms compared across six capability dimensions. Assessed from public product descriptions, not hands-on use, so treat it as a desk review.

PlatformMonitoringLeak DetectOfflineMulti-roleReportingAI/AnalyticsTarget
WaterApp✓✓✓✓✓✓Residential
InSemiTech✓✓–✓✓LimitedMunicipal
Wamasys✓✓✓✓✓LimitedRural
Shayp✓✓–✓✓✓Buildings
KarIoT✓✓–✓✓✓Govt.
NeerTrack (Ours)✓✓✓✓✓V2 PlanTier 4 Cities
← swipe to see all columns →
Phase 03 — Develop

From Crazy 8s to feature priority: what we build and why.

Crazy 8s ideation generated 8 distinct screen concepts. Best directions carried into feature prioritisation.

FeaturePriorityWhy / Linked Pain Point
Real-time outage alertMVPSolves the core frustration — residents miss water windows with zero notice
Water quality indicatorMVPReduces uncertainty — directly linked to Rituraj's bottled-water expense
Report issue + trackMVPCreates a trusted channel — replaces unanswered phone calls
Weekly schedule viewMVPSolves unpredictable timing for Rupam and Bitupan
Multi-language supportMVPJorhat is primarily Assamese-speaking
Plumber bookingNTHUseful but not critical for Day 1
GPS zone mappingNTHRequires infrastructure data first
← swipe to see full table →
Phase 03 — Develop

Rupam's morning, mapped from anxiety to relief.

Four core scenarios mapped across the app — each revealing an emotional state and a design opportunity.

StageGoalPain PointEmotionDesign Opportunity
AwarenessKnow water statusNo information at allStressed 😟Real-time alert on home screen
EngagementCheck phone for updateConfusing UI elsewhereFrustrated 😤Clean, focused status home screen
ExplorationDiscover outage detailsUnclear schedule displayUncertain 😕Simple in-time supply schedule
ActionReport a leakage issueTakes too long, no replyAnnoyed 😠3-step report with photo + location
ResolutionPlan morning accordinglyNo confirmation receivedAt ease 😌Ticket ID + status tracking
← swipe to see full table →
Phase 03 — Develop

Information architecture: how the app is structured.

The sitemap defines navigation hierarchy. The flow below maps the most complex interaction — reporting an issue.

Login / OTP
Home
Water Schedule
Daily
Weekly
Monthly
Water Quality
Metrics
Usage graph
Info tooltip
Report Issue
Report form
Confirmation
Check Status
Settings
Language
Notifications
Terms
Log out
Home
→
Tap "Report an issue"
Describe issue
→
Choose category
→
Upload photo (optional)
Tap "Proceed"
→
Confirmation + Ticket ID
separate entry point from Home ↓
Tap "Track an issue"
→
Enter report ID
→
Status shown
Phase 03 — Develop

From pencil to pixel: the wireframing process.

Every screen moved through three stages — low-fidelity sketch, mid-fidelity structure, then high-fidelity UI — refining copy, hierarchy, and interaction at each pass.

1Low-Fidelity — Paper Sketches
Lo-fi login flow sketch
Login → OTP → Water Schedule sketch
Lo-fi wireframe sheet 2
Login + Schedule Today / Weekly / Monthly
Lo-fi wireframe sheet
Water Quality, Report Issue, Settings
2Mid-Fidelity — Structured Layout
Mid-fi wireframe sheet
Home, Settings, Language preference structure
Schedule detail sketch
Schedule table + calendar grid refinement
Quality detail sketch
Water quality fields + usage graph + check status
3High-Fidelity — Final UI
Final home screen
Home — production-ready
Final schedule screen
Water Schedule — production-ready
Final quality screen
Water Quality — production-ready
Phase 04 — Deliver

Six design decisions that shaped the final product.

Each decision driven by research and tested against one constraint: usable equally by a 50-year-old homemaker and a 24-year-old student.

01
Status-first home screen
The single most important morning question is "is there water?" — the home screen answers this first.
02
OTP-based login
Consumer number + OTP avoids password fatigue for a largely non-technical user base while keeping accounts secure.
03
Photo is optional
Users in a hurry can file a complaint in under 60 seconds without needing a camera.
04
Ticket ID + status tracking
Directly addresses the complaint black hole — residents now see a clear reference ID and can check status anytime.
05
Quality readings + plain-language tooltip
Technical readings (pH, turbidity, chlorine, hardness) shown directly, with a tap-to-learn tooltip explaining what's normal.
06
Multi-language settings
English, Assamese, Bengali, and Hindi toggle — accommodating Jorhat's actual linguistic makeup.
Phase 04 — Impact

Before NeerTrack. After NeerTrack, by design.

A comparison of design intent, not of measured results. NeerTrack has not been deployed or tested with residents yet.

Before — Current state (as described by survey respondents)
  • Outages discovered by turning on a dry tap at 6am
  • No advance supply schedule visible
  • Water quality unknown to residents
  • Complaints via phone — unanswered, no ticket
  • Limited language support reported
After — NeerTrack (design intent, untested)
  • Designed to push an alert ahead of a scheduled outage
  • Weekly supply schedule on home screen
  • Water quality readings with a plain-language tooltip
  • 3-step flow with Ticket ID + status tracking
  • Assamese / Hindi / Bengali / English toggle
Phase 04 — Deliver

Final screens.

14 production-ready screens across the full resident journey, built in Figma with Auto Layout components and a consistent design system.

1Authentication
Consumer number login → OTP verification → Home.
Login
Login
→
OTP
OTP Verification
2Home Dashboard
Status-first landing screen with expandable cards.
Home
Home
3Water Schedule
Three views of the same schedule data, switchable via segmented control.
Schedule list
Daily / List
Schedule weekly
Weekly Table
Schedule monthly
Monthly Calendar
4Water Quality
Metrics, usage trends, and plain-language guidance.
Quality main
Metrics + Usage Graph
Quality info
Info Tooltip
5Report an Issue
Describe, categorize, optionally attach a photo, and track resolution.
Report form
Report Form
→
Report confirm
Confirmation + Ticket ID
Check status
Check Status
6Settings
Language, notifications, and support — accessed from Home.
Settings
Settings
Settings language
Language
Settings notification
Notifications
Phase 04 — Hypotheses

Hypothesis matrix: what I expect, and how I'll prove it.

None of these are measured results. Targets come from benchmarks of comparable civic apps (NextDrop India, BWSSB Bangalore, NYC 311) and stay unvalidated until the planned usability test and a one-ward pilot.

IDHypothesisMetricBaseline todayTargetBenchmark basisHow I'll validateStatus
H1If residents get a push alert 2 hours before a scheduled outage, fewer will be caught by surprise.Residents reporting an unannounced outage in the last 30 daysResidents say they learn of outages only after supply stops (survey quotes, n<20)73% reductionNextDrop India4-week one-ward pilot + weekly diary check-inUnvalidated
H2If reporting takes 3 steps with an optional photo, more residents will report issues than by phone.Reports filed per 1,000 households per monthUnmeasured (phone-only, often unanswered)4.2× phone volumeNYC 311Pilot ticket log vs. utility call logUnvalidated
H3If every report gets a Ticket ID and visible status, issues will be resolved faster.Median hours from report to resolutionUnmeasured (no ticketing today)40% fasterBWSSB BangaloreTicket timestamps during pilotUnvalidated
H4If the home screen answers "is there water?" first, residents will keep coming back.Day-30 retention34% (comparable-app benchmark)58%Comparable civic appsPost-pilot analytics, 30-day cohortUnvalidated
H5A resident can find today's supply status and explain what it means.Task completion rateNot tested80%+Usability test protocol5 moderated sessions, one per persona + one cross-typePlanned
H6A resident can file a leak complaint quickly.Time to file a reportNot tested< 90 secUsability test protocolSame 5 sessions, timed taskPlanned
H7Overall, the app feels usable to both a 50-year-old homemaker and a 24-year-old student.System Usability Scale (SUS)Not tested75+SUS industry normSUS questionnaire after the 5 sessionsPlanned
← swipe to see full table →

Read it left to right: assumption → how it is measured → where it starts → where I think it can go → how it gets proven. If a test disproves a hypothesis, the feature is redesigned, not defended.

Validation

Usability testing: what's planned and why it matters.

Formal usability testing was not conducted within this 14-day sprint — this is a documented plan for the next step.

🔬

Planned Usability Test Protocol

A moderated usability test with 5 Jorhat residents — one from each persona type plus one cross-type. Sessions run 20 minutes via Google Meet or in-person.

Three core tasks:

  1. Find today's water supply status and explain what it means
  2. File a complaint about a leaking pipe near your home
  3. Check what time water will come on Thursday this week

Success metrics: Task completion 80%+, complaint filing under 90 seconds, SUS score 75+.

Retrospective

What I'd do differently. What surprised me.

The honest retrospective.

What worked well

Anchoring every feature to a specific persona's pain point kept scope from exploding. Every feature held back from the MVP had a documented reason.

What I'd change

I'd run informal walkthrough tests at wireframe stage, not just at high-fidelity — flow ambiguities would surface far earlier.

What surprised me

The motor inequity finding turned a technical supply problem into a social justice issue — it reshaped how I framed the reporting feature entirely.

NeerTrack · Water Supply Management App · Jorhat, Assam · UI/UX Case Study · 2025

Role: UI/UX Designer  ·  Methods: Double Diamond, Design Thinking, Lean UX  ·  Platform: Android Mobile-First

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SEC/03 WEBSITES

Websites I've Built

Photography Portfolio thumbnail
01
Photography Portfolio
A professional online home for a photographer's work, with a download section so visitors can save his images straight from the site. Built with HTML, CSS & JS in 14 days.
khalidphotography.netlify.app ↗
The Blue Algae thumbnail
02
The Blue Algae — Music Band Portfolio
A site to strengthen the band's online presence and introduce the team as a band, shaped around their identity. Built with HTML, CSS & JS in 20 days.
thebluealgae.netlify.app ↗
LUNE thumbnail
03
LUNE — Music Producer Portfolio
A live, minimal portfolio so anyone searching for LUNE online can learn about his mixing and mastering work and contact him directly from the site. Built with HTML, CSS & JS in 1 week.
lunemusic.netlify.app ↗
Subtl thumbnail
04
Subtl — E-commerce Website
A minimal e-commerce store for Subtl Apparels, a clothing brand. Designed on Wix, covering product listings, browsing and purchase flow, and shipped in 1.5 months. A self-initiated redesign is in the case studies above.
subtlclothing.wixsite.com/subtle ↗

SEC/04 EXPERIENCE

Where I've Worked

May 2026 — Present
Assam, India
Co-Founder & Digital Design Associate
The Design Walas
  • Working on UI/UX and digital product design, conducting research, competitive analysis, user journey mapping, and user flow development to identify user needs and design points of friction.
  • Designing UI screens, wireframes, and interactive prototypes with a focus on usability, accessibility, and intuitive navigation.
  • Supporting broader design work across the studio, including logo design, pitch decks, print collateral, and brand identity design.
Mar — Apr 2026
Remote
Design Apprentice
Wayco
  • Designed 4–5 social media posts a day for a private company, as a mentor-led programme to build my visual design skills.
  • Took daily critique: my mentor picked which posts to publish, improve or rework, so I learned to iterate quickly and handle feedback under deadline.
Jan — Feb 2025
Remote
UI/UX Designer Intern
Zidio Dev
  • Worked on a task management system as part of a collaborative product design project, contributing across research and design stages.
  • Conducted competitive analysis and created user personas to guide design decisions.
  • Designed the landing page for the product. Project files ↗
2020 — 2024
Remote
Freelance UI/UX Designer
Independent
  • Worked directly with clients to turn requirements into live websites, managing timelines, feedback and delivery independently.
  • Delivered four sites: a photographer's portfolio, a music band site, a producer's portfolio and an e-commerce store for a clothing brand (see Websites).

SEC/05 ABOUT

Professional Summary

UI/UX and Product Designer holding a B.Com in Human Resource Management, which lends a commercial lens to everything I craft on screen. Co-Founder of The Design Walas, a studio delivering end-to-end branding, logos, print, websites and interface solutions for entrepreneurs and small ventures. Skilled at turning user research and company goals into functional, thoughtfully made experiences.

I use AI tools throughout my process — from generating quick visual concepts to accelerating research synthesis — while keeping creative judgment and decision-making entirely human-led.

SEC/06 SKILLS & TOOLS

Capabilities

Skills

Problem Framing UX Strategy User Research User Flows Information Architecture Interaction Design Usability Test Planning Iterative Design Design Systems Accessibility (Basic) Front-end Prototyping Responsive Design

Tools

Figma Canva Adobe Premiere Pro Wix HTML / CSS / JS Git / GitHub
NeerTrack Showcase
THE LOSER Showcase
AMTRON Showcase
Subtl Showcase
AMTRON Redesign Case Study
THE LOSER Case Study
Subtl Case Study