Scenario‑based case studies

A curated set of domain challenges showing how I analyze problems, choose trade‑offs, and ship measurable outcomes. These aren’t client‑specific stories—they’re playbooks I apply across products.

↓ 38%

Time‑to‑Interactive via code splitting & image strategy

↑ 45%

SEO score lift after performance + a11y fixes

99.9%

Uptime with CDN, health checks & rollbacks

↓ 32%

Cart abandonment after UX‑first checkout

E‑commerce · UX

Checkout flow that actually converts

Context: High cart abandonment from multi‑step forms.

Approach: Progressive steps, inline validation, wallet/UPI, guest checkout.

React / Django REST Stripe · PayPal

Details

One‑page visual steps with optimistic UI & skeleton states.
Address autosuggest, saved profiles, and error recovery.
Server‑side risk checks; idempotent payment intents.
Outcome: −32% abandonment, checkout < 60s.

Performance

Web Vitals clinic for content‑heavy sites

Context: Animations & media slow LCP/TTI.

Approach: SSG/ISR, critical CSS, lazy hydration, WebP/AVIF, CDN.

Next.js · Vercel CDN · Caching

Details

Split bundles by route; prefetch above‑the‑fold assets.
Serve images via srcset + priority hints; defer non‑critical JS.
Outcome: LCP ≤ 2.0s, TTI −38%, CLS < 0.1.

Security

Zero‑drama authentication hardening

Context: Login vulnerable to brute force & session theft.

Approach: OAuth2, device‑bound tokens, 2FA, rate‑limits, audit trails.

Django · JWT TOTP · WebAuthn

Details

Progressive security: optional → recommended → enforced tiers.
Refresh‑token rotation & IP/device anomaly flags.
Outcome: −45% password resets; reduced account takeovers.

Forms people actually finish

Context: Users drop mid‑form due to friction & uncertainty.

Approach: Stepper UI, progress save, inline help, microcopy tests.

A/B Testing Analytics

Details

Real‑time validation; clarify error ownership.
Keyboard‑first flow, bigger targets, mobile affordances.
Outcome: +35% completion; −22% error loops.

Infrastructure

Zero‑downtime deploys with guardrails

Context: Risky releases & missed incidents.

Approach: Blue‑green, health checks, canary, observability, autoscaling.

Docker · CI/CD Grafana · Sentry

Details

Feature flags; versioned schema changes; migrations safety nets.
Outcome: 99.9% uptime; sub‑5m MTTR; painless rollbacks.

E‑commerce

Multi‑vendor architecture that scales

Context: Complex roles & inventory across vendors.

Approach: Role‑based access, stock sync, vendor isolation, audit logs.

RBAC Event‑driven

Details

Cart split by vendor; per‑vendor checkout & settlement.
Outcome: Lower ops overhead; predictable scale.

Process & decision‑making

01 • Discover

Clarify goals, constraints, metrics, and risks with stakeholders.

02 • Research

Audit analytics, user journeys, infra posture; benchmark competitors.

03 • Design

Map architecture & UX flows; decide trade‑offs explicitly.

04 • Build

Iterative delivery behind flags; test paths & edge cases.

05 • Validate

Ship canaries; measure KPIs; A/B test; tighten loops.

06 • Operate

Observability, alerts, runbooks, incident drills, retrospectives.

Have a challenge in mind?

I can adapt these playbooks to your product and stack.

Let's talk Browse cases