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Your website, CRM, accounting software, payment gateway and shipping partner all hold pieces of the same information. We build the connections between them so data moves automatically, errors get reported instead of ignored, and nobody has to copy records by hand.
New Delhi, India | 50+ projects delivered | 10+ industries served
The riskiest connections in a business are the ones that look like they are working. A script was written quickly to move orders between two systems. It was never documented and nobody owns it. When the other side changed a field, the script kept running and started saving incomplete records. The gap showed up weeks later during accounts reconciliation.
The variations repeat everywhere. Passwords sitting inside the code. A partner API blocking requests at month end because the limit was crossed, with nothing retried and nothing logged. And nobody able to say which systems are exchanging data right now, in which direction.
Building new APIs, connecting to third-party services, and rescuing integrations that were never set up properly.
REST APIs exposing your business logic to your website, mobile app or partners, with proper authentication, documentation and rate limits.
Explore custom APIs
Payment gateways, shipping partners, WhatsApp and SMS providers, mapping services, accounting tools and marketing platforms connected and tested properly.
Explore API integration
Login systems using OAuth, JWT, single sign-on, OTP and social logins, with sessions, tokens and permissions handled the way they should be.
Explore secure auth
Two-way synchronisation between your website, ERP, CRM and inventory software, with clear rules on which system wins when the two disagree.
Explore data sync
Linking enquiry forms, orders and customer records to your CRM or ERP so the sales team works from live data instead of exported spreadsheets.
Explore CRM solutions
Connecting to older software that has no modern API, using controlled database access, scheduled file exchange or a small service built in front of it.
Explore ERP modulesThe parts that separate an integration that lasts from a script that quietly fails.
| Included | What it means for you |
|---|---|
| System mapping | A written list of which systems connect, in which direction and who owns each record |
| API documentation | Endpoint reference your team or any future developer can pick up and use |
| Authentication setup | Token-based access with permissions limited to what each consumer needs |
| Field mapping | Exactly how each field converts between systems, including formats and validation |
| Retry handling | Failed requests are retried sensibly and stored if they still fail |
| Rate limit handling | Requests are queued so partner limits are respected instead of breached |
| Error logging | Every request traceable end to end when something needs investigating |
| Alerts | Email notification when failures cross a threshold, so you know before customers do |
| Sandbox testing | Tested against the provider's test environment before touching live data |
| Reconciliation | Record counts checked against the source system during the first live cycles |
| Post-launch support | Free bug fixing for an agreed period after go-live |
Endpoint reference, a runbook explaining what to do when something fails, and a ready-to-import Postman collection so any developer can test the API directly.
Six stages designed so problems appear in testing rather than in production.
We list every system involved, what data each holds, and what limits the provider imposes.
You get: data flow map and system inventoryEndpoints, request and response formats, error codes and authentication are agreed in writing first.
You get: API specification documentWe decide what happens on timeout, rejection, duplicate and partial success before any code is written.
You get: error handling and retry planThe API or integration is built with a sandbox environment your developers can test against throughout.
You get: sandbox access and Postman collectionNormal cases, failure cases and volume are all tested, including deliberately breaking things to check recovery.
You get: test results and failure reportLogging and alerts are switched on, then we watch the first live cycles and reconcile against the source system.
You get: monitoring, reconciliation report and runbookWe use widely supported standards so your integration can be maintained by anyone competent, not only by us. REST covers most requirements cleanly. Where a provider only offers older formats, we work with what exists rather than asking them to change.
Where the data itself needs restructuring first, see database design and management.
Automation tools are genuinely useful. Here is where they stop being the right answer.
| Consideration | Custom integration | Automation tool | Quick script |
|---|---|---|---|
| Setup time | Two to six weeks | A few days | A few hours |
| Cost as volume grows | Fixed | Rises per task or operation | Free until it breaks |
| Complex data conversion | No limits | Only what the tool supports | Possible but undocumented |
| When something fails | Retried, logged and alerted | Generic error, limited detail | Usually silent |
| Who can maintain it later | Any developer, it is documented | Whoever holds the tool account | Only the person who wrote it |
| Suitable for payment or financial data | Yes, built to the requirement | Depends on the tool's terms | No |
| Best suited to | Business-critical or high-volume data flows | Simple, low-volume connections | A temporary stopgap only |
If an automation tool covers your requirement at low volume, use it. We will tell you at what point the cost and the lack of visibility start to work against you.
Knowing a provider's quirks in advance saves weeks of discovery on the project.
Razorpay, UPI, cards, refunds and settlement reconciliation
Rate checks, label generation, tracking and delivery status
Lead capture, deal stages and customer record sync
Order updates, OTPs, reminders and campaign triggers
Invoices, ledgers and payment entries kept in step
Inventory and order sync across sales channels
Address lookup, distance calculation and service area checks
Google login, OTP verification and single sign-on
Integration work is judged long after handover, on the day something upstream changes. We document what we build and plan for that day, so the connection fails safely and recovers instead of corrupting your records.
What businesses ask before starting integration work.
Cost depends on how many systems are involved, how complex the data conversion is, and whether the other systems already offer a usable API. Connecting a single payment gateway is straightforward. Two-way sync between a website and an ERP takes considerably longer. We give a fixed written quote after mapping the systems.
A single well-documented third-party integration usually takes two to four weeks. Two-way sync between business systems generally takes six to ten weeks. Often the biggest delay is waiting for API credentials or approval from the other provider rather than the development itself.
Usually yes. Where no API exists we can work through controlled database access, scheduled file exchange, or by building a small service that sits in front of the old system and exposes what is needed. We choose the approach after seeing how stable the system is and whether it is still supported.
Under a support plan we track provider deprecation notices and test regularly, so breaking changes are caught before they affect you. If a provider changes something without warning, the integration fails into a retry queue rather than writing bad data, and the held records process normally once the connection is updated.
Wherever possible we work in a test or sandbox environment first. If live access is needed we ask for the minimum permissions required, for a limited period, and everything is covered by a confidentiality agreement signed before the work starts.
We reconcile record counts against the source system during the first live cycles and report anything that failed validation as an exception for you to review. Nothing is corrected silently, because a quietly fixed record hides a problem that will repeat.
Yes. We build public-facing APIs with token-based access, permission scopes, rate limits per consumer, versioning so future changes do not break existing users, and documentation your partners can onboard with themselves.
APIs are built with token authentication, encrypted connections, strict input validation, permission checks on every request, and rate limits to prevent abuse. Credentials are stored outside the code so they can be rotated without a redeployment. We also check responses do not expose more data than the requester should see.
Yes, and it usually works well. We agree the API specification early so both teams can build in parallel. Many projects run with us delivering the integration layer while your team handles the application using it.
Yes. Monthly support covers monitoring, investigating failures, responding to provider changes, rotating credentials and adjusting capacity as volume grows. Integrations handling orders or payments should always have someone accountable for them.
List the systems involved and what is currently being done by hand. We will map the data flow, tell you what is realistic, flag anything the other provider will limit, and give you a clear cost.
If a simple automation tool solves it, we will point you there instead.
New Delhi, India
+91 8130428118 info@developerdesk.in nikhil@developerdesk.in Support and FAQCustom websites, eCommerce platforms and web applications built to scale.
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