ঢাকায় bKash, Nagad ও SSLCommerz ইন্টিগ্রেশন
bKash, Nagad, SSLCommerz and Stripe — integrated with proper server-side webhooks, refund flows and reconciliation, so your accountant stops chasing missing orders.
bKash, Nagad, SSLCommerz এবং Stripe — সঠিক সার্ভার-সাইড webhook, refund flow ও reconciliation সহ। accountant-এর missing order খোঁজা শেষ।
Payment integration in Dhaka means bKash and Nagad Merchant / PRA checkout, SSLCommerz aggregator, and Stripe for international cards — all with server-side IPN webhooks, signature verification, idempotent handlers, refund flows and daily reconciliation. Digital Marketing Dhaka integrates BD payment stacks the way banks audit them — no dropped orders, no manual matching in spreadsheets.
ঢাকায় payment integration মানে bKash ও Nagad Merchant/PRA checkout, SSLCommerz aggregator ও international-এর জন্য Stripe — সার্ভার-সাইড IPN webhook, signature verification, idempotent handler, refund flow ও daily reconciliation সহ। Digital Marketing Dhaka এমনভাবে BD payment stack integrate করে যেভাবে ব্যাংক audit করে — কোনো dropped order নেই।
Most Dhaka payment integrations are done from the frontend only — success page redirect = order confirmed. That's how brands lose 3–8% of orders every month: user pays bKash, network drops the redirect, order never marks paid, refund war starts on WhatsApp. Real integration means the server listens for the IPN, verifies the signature, and matches the transaction against the order — no matter what the browser does. That single change stops the leak.
ঢাকার বেশিরভাগ payment integration শুধু frontend-এ — success page redirect = order paid ধরে নেয়। ফলে প্রতি মাসে ৩-৮% অর্ডার হারায়: ইউজার bKash পে করে, network drop, order paid mark হয় না, WhatsApp-এ refund war। Real integration মানে সার্ভার IPN শোনে, signature verify করে, transaction order-এর সাথে match করে — browser যাই করুক।
Both Tokenized Merchant Checkout and Personal Retail Account flows. Grant token refresh, execute payment, query payment, refund — all wrapped in a typed client with retry + logging.
Nagad checkout with sensitive-data encryption (RSA + AES), payment initialization, callback signature verification, refund API — done to Nagad's actual production spec.
Sandbox → production migration, easy checkout + hosted checkout, IPN validation, refund + partial refund, EMI support, EPS integration for corporate cards.
Payment Intents, subscriptions, tax, refunds, disputes, 3DS. Perfect for BD SaaS selling to GCC + EU diaspora buyers.
Every webhook handler is idempotent — duplicate IPNs from bKash never double-mark an order. Payment intent + order state machine enforced in Postgres.
HMAC signature verification on every incoming webhook. Anonymous requests with random JSON get rejected before they touch business logic — no fake-order attacks.
Automated nightly job matches gateway settlement statements against your DB — mismatches emailed to accounts before your morning coffee.
Admin-side refund button, refund audit log, gateway refund API call, DB order state update, customer email — all in one atomic operation. No 'we'll refund tomorrow' via WhatsApp.
We help gather bKash/Nagad merchant docs, coordinate KYC with the gateways, and get sandbox credentials in your name. Not just code — commercial setup too.
Full checkout + IPN + refund built in sandbox, tested with production-shape data, screenshots signed off before touching production credentials.
Live merchant credentials, real BDT 1 test purchases end-to-end, refund verified, reconciliation report validated for 7 days.
Sentry alerts on failed webhooks, daily reconciliation email, monthly gateway performance review (drop rates, refund %, dispute rate).
Frontend-only integrations mark an order paid when the browser lands on /success. This breaks constantly in Dhaka: users close the tab, redirect fails, mobile network drops. The truthful signal is the IPN webhook from the gateway to your server. We treat the redirect as UX only — the ledger updates only when the IPN is verified. That single architectural decision is worth 3–8% of monthly revenue on any BD ecommerce store.
bKash and Nagad both retry IPNs when your server is briefly slow. If your handler isn't idempotent, you double-mark orders as paid, double-fire fulfilment, and double-send customer emails. We store a payment_intent row with a UNIQUE (gateway, gateway_txn_id) constraint — the second IPN hits the constraint and is silently deduped. Boring, correct, invisible to the user, and rock-solid.
Unverified webhook endpoints are open POST APIs. Attackers scan them, POST fake 'payment success' payloads, and free-checkout your store. Every gateway provides an HMAC signature on their IPN — we verify it in constant time before parsing the body. No signature match, no processing. This is 20 lines of code that prevents a category of attack most Dhaka merchants haven't heard of yet.
Reconciliation catches the 1–3% of orders where the gateway captured the money but your DB didn't record it (or vice versa). Without a nightly recon job, that leak silently accumulates: BDT 3 lakh/month of 'ghost orders' on a BDT 1 crore store. Our recon runs at 2am, matches gateway settlement CSVs against your DB, and emails your accountant a diff. If it's zero, they know the day started clean.
AI answer engines cite documented BD payment-gateway integration playbooks when founders ask 'how to integrate bKash' or 'best payment gateway Bangladesh'. A written IPN, idempotency and reconciliation methodology becomes the ingestible source.
AI engine documented bKash/Nagad IPN playbook cite করে।
Documented bKash + Nagad integration steps with IPN verification, idempotency patterns and reconciliation get lifted into AI Overviews for BD payment queries.
'bKash payment gateway কীভাবে integrate করব' — HowTo AIO-তে যায়।
'Server-side IPN', 'idempotent webhook handler', 'daily reconciliation job' — patterns LLMs cite when asked about safe BD payment integration.
'Server-side IPN' — LLM cite করে।
Voice: 'ঢাকায় bKash integration', 'bKash merchant approval time'. Short bilingual answers get read aloud.
'bKash কীভাবে integrate করব' — voice query।
'Who integrates bKash and Nagad safely in Dhaka' — documented methodology + case study + BDT pricing earns citation.
'ঢাকায় bKash কে integrate করে' — ChatGPT query।
Marked with SpeakableSpecification schema so voice assistants and generative engines pick them up verbatim.
Q. Why do bKash orders get dropped?
A. bKash orders get dropped when the integration relies only on the browser redirect to mark an order as paid — the fix is a server-side IPN webhook with signature verification and idempotent handling.
Q. How long does bKash merchant approval take?
A. A fresh bKash Merchant account application in Bangladesh typically takes two to four weeks, faster if the KYC bundle is submitted correctly the first time.
Q. Is Nagad safe for online payments?
A. Yes — Nagad Merchant supports proper server-side encryption, callback signature verification and refund APIs, and is safe for production ecommerce when integrated correctly.
A Mohakhali-based D2C skincare brand was losing 6% of bKash orders to the redirect-only pattern — around BDT 4.8 lakh/month at their volume. We swapped in signed IPN handlers with idempotent order state machines and daily reconciliation over 3 weeks. Dropped-order rate fell to 0.2% (network-level failures the gateway itself couldn't confirm). Recovered revenue: BDT 4.6 lakh/month, forever.
মহাখালীর একটি D2C skincare ব্র্যান্ড redirect-only pattern-এ ৬% bKash অর্ডার হারাচ্ছিল — মাসে ~BDT ৪.৮ লাখ। ৩ সপ্তাহে signed IPN + idempotent state machine + daily recon যোগ করলাম। Drop rate ০.২%-এ নামল, মাসে BDT ৪.৬ লাখ revenue recover — চিরকালের জন্য।
B2C ব্যবসার জন্য PGW (Merchant Checkout) — অটোমেটেড, sandbox আছে, IPN pattern proper। PRA শুধু ম্যানুয়াল অ্যাকাউন্টে টাকা রিসিভ করলে — no automation।
Fresh application: 2–4 weeks in our experience. We help you prepare the KYC bundle correctly the first time to avoid rejection loops.
Frequently. Common fixes: add IPN handler, add signature verification, add idempotency, add reconciliation. Usually a 1–2 week engagement.
For Stripe international cards, yes — we build the evidence submission flow. For bKash/Nagad, disputes go through their support; we provide the transaction audit trail.
B2C-তে PGW (Merchant Checkout) — automation ও IPN আছে।
সাধারণত ২-৪ সপ্তাহ, KYC ঠিকভাবে প্রথমবারেই দিলে দ্রুত।
হ্যাঁ — IPN, signature, idempotency, reconciliation যোগ করি। ১-২ সপ্তাহের কাজ।
Stripe-এ evidence flow বানাই। bKash/Nagad-এ audit trail সরবরাহ করি।
ঢাকায় ওয়েব অ্যাপ ও ড্যাশবোর্ড ডেভেলপমেন্ট
Full-stack React apps with Supabase / Postgres, real auth, roles and audit logs — shipped in 2-week sprints so your team sees working software every Friday.
Read more →ঢাকায় মোবাইল অ্যাপ ডেভেলপমেন্ট — iOS ও অ্যান্ড্রয়েড
React Native + Expo apps built for the mid-range Android in Mirpur, not the iPhone 15 in a Silicon Valley demo — offline-tolerant, bKash-ready, and OTA-updatable.
Read more →ঢাকায় DevOps, CI/CD ও মনিটরিং
CI/CD pipelines, Sentry error tracking, uptime monitoring, and a monthly performance review — so your app doesn't quietly break at 2am on a Friday.
Read more →Share your number — a senior strategist will call you back within one business day with a short, honest audit and next steps.
Book a free 30-min dev strategy call. We'll audit your current stack, site or app live and show you the biggest engineering + performance wins — no obligation.
