# M.K. Abishek> Software Engineer · Massclick · TiruchirappalliI build the **app**, the **API**, and the **server** it runs on.![commits](1,557) ![s3](33,096/33,096) ![cutover](~90s)- Flutter · Node.js · MongoDB · React · AWS- Syuap → Digihope → Massclick, plus VandiZone- open to work: full-time or freelance

// VandiZone · my own client · Flutter + Firebase// (a sketch of the idea, not production code)final trip = FirebaseFirestore.instance    .collection('bookings').doc(bookingId);// the customer app and the captain app share one live doctrip.snapshots().listen((t) {  map.animateCamera(t.captainLocation); // live tracking  notify(t.status);                     // FCM on every change});

// Massclick app · v2.1.1 · Android + iOS · EN + தfinal leads = ref.watch(leadsProvider);        // Riverpodsocket.on('lead:analytics:update', (_) {  ref.invalidate(leadsProvider);               // live lead alerts});// OTP auto-fill · App Links · FCM lead channel

// Search & Geo · Massclick APIconst category = resolveCategoryIntent(term); // intent firstconst results = await Business.aggregate([  { $match: { $text: { $search: term }, ...near(city) } },  { $sort: { distance: 1, score: -1 } },]);// too few results? widen to nearby pincodes, then the district

# The Database Move · production cutovernode db-backups/backup.js --label pre-cutover --prod# stop both app replicas together, final sync, repoint the URLdocker compose up -d --no-deps# nightly dumps on the new box, pulled off-box at 03:30# verified byte-for-byte with sha256sum

// 36,187 files, zero lost · AWS S3await plan();                  // every object mapped to an ownerawait copy({ commit: true });  // 33,096 / 33,096 · failed = 0await verifyS3();              // sizes match, old keys still there// lintS3Paths.js: 51 call sites migrated, 0 hardcoded URLs left

// Fast on a budget phone · React + Express SSRconst AddBusinessModal = lazy(() => import('./AddBusinessModal'));const ShareSheet       = lazy(() => import('./ShareSheet'));// the server paints the hero before React bootsres.send(businessRouteShell(business));  // LCP before JS

// The crawl trap · Express SSR middlewareif (isJunkPath(req.path)) {  return res.status(410).end();   // Gone, for good}// emitted links now pass through slugify, every $regex is escaped// alert rule rewritten so 410s no longer page anyone

// SMS pumping · Massclick sign-in// 1. stop the bleeding at the edge (backup first, rollback ready)// 2. know who is really callingconst ip = clientIp(req);          // proxy-aware, right to left// 3. caps per number and per day, plus a verify lockoutif (await abuseGuard.blocks(ip, mobile)) {  return decoy(res);               // looks sent. nothing sent.}await sendOtp(mobile);             // real people only

* (HEAD -> massclick) Software Engineer · 2026 – now* (freelance/vandizone) my own client · ongoing* (digihope) Head of Mobile · 2025 – 2026|   shipped: Veezzo* (syuap) Intern, Flutter then React · 2024|   shipped: Vmark* (msc) M.Sc, Bishop Heber College · 2023 – 2025* (bsc) B.Sc, National College · 2020 – 2023    shipped: COS OD

{  "mobile":  ["Flutter", "Dart", "Riverpod"],  "web":     ["React", "Next.js"],  "backend": ["Node.js", "Express", "MongoDB", "Redis", "Socket.IO"],  "cloud":   ["Firebase", "AWS", "Docker", "nginx", "GitHub Actions"],  "watch":   ["Grafana", "Prometheus"],  "also":    ["Laravel", "Python"]}

name: how-i-shipon: [your-idea]jobs:  brief:  { run: "what it does, who uses it, what done means" }  build:  { needs: brief, run: "small commits you can see daily" }  test:   { needs: build, run: "real devices, real data" }  ship:   { needs: test,  run: "stores or servers, rollback ready" }  watch:  { needs: ship,  run: "alerts, crash reports, fixes" }

#!/usr/bin/env bash# say hello · I reply within a day./contact.sh \  --to    "abishek.mk.01@gmail.com" \  --type  "mobile app" \  --about "what you're building"