System Integration • 5-Day Direct Sprint

Rock-Solid CRM & API Integrations Built in 5 Days. Zero Data Drops. No Fragile Zapier Chains.

Designed for product and engineering teams tired of leaky data syncs. We build production-ready, bi-directional integrations between Salesforce/HubSpot and your payment gateways, ERPs, or internal Postgres/Java microservices with industrial-grade error handling.

Scope Your Integration (From €2,800) Inspect Scope & Architecture

Sprint Timeline

5 Business Days (Mon–Fri)

Sprint Investment

From €2,800

Output Package

Git PR + Runbook + Postman

Sync Bottlenecks

Why glue code and no-code tools always fail at scale

When critical business events depend on brittle webhooks without retry queues, records slip through unnoticed.

1. Broken Webhooks & Phantom Sync Failures

No-code automations (Zapier, Make) choke on payload volume or fail quietly when third-party APIs return temporary 502/504 errors. There is no dead-letter queue, no replay capability, and no structured error alerting.

2. Divergent Source of Truth (Finance vs CRM)

Sales reps believe an account is active in Salesforce, while Stripe has cancelled the subscription due to payment failures. Operations spends 10+ hours every month reconciling discrepancies by hand.

3. Product Engineers Burning Sprints on Plumbing

Your core engineering team should be shipping product features, not wrestling with OAuth refresh tokens, Salesforce Composite REST API limits, or NetSuite SuiteScript quirks.

Scope Enclosure

What's built & delivered in the 5-day sprint

An enterprise-grade integration pipeline committed directly to your repository with automated tests and clear runbooks.

✔ Complete Sprint Deliverables Checklist

■ Bi-Directional Event Sync: Robust sync pipeline between CRM (Salesforce/HubSpot) and 1 target external system (Stripe, NetSuite, Zendesk, or custom REST API).
■ Idempotent Ingestion Layer: Unique transaction ID deduplication ensuring that re-sent webhooks or network retries never generate duplicate invoices or accounts.
■ Dead-Letter Queue (DLQ) & Exponential Backoff: Automated failure isolation with queue re-drive scripts so transient downtime never causes permanent data drops.
■ Secure Credential Architecture: Production-grade authentication using OAuth 2.0 PKCE, JWT bearer token flow, or Named Credentials. Zero plaintext secrets.
■ Schema Validation & Type Mapping: Strict JSON Schema / TypeScript interface mapping with input sanitization and timezone normalization.
■ Pull Request & Postman Test Collection: Clean Git branch with 85%+ automated test coverage, mock server payloads, and environment variables.
■ 14-Day Post-Launch Warranty: Rapid senior developer triage for any integration edge case within agreed scope.

✖ What is NOT Included (Strict Boundaries)

✕ Connecting more than 2 primary systems in a single 5-day sprint (additional platforms require a subsequent scheduled sprint).
✕ Massive historical database migrations exceeding 50,000 legacy records (available as an add-on migration batch).
✕ Custom frontend application development or web portal design.
✕ Re-architecting unrelated database schemas outside the specified integration payloads.

5-Day Roadmap

Execution timeline from Day 0 to Production PR

PHASE 01 — DAY 0

Field Mapping & Key Handshake

We conduct a 30-minute scoping sync, establish sandbox access tokens, lock the JSON schema mapping specification, and verify mutual NDA.

PHASE 02 — DAYS 1 TO 4

Sprint Construction & Stress Test

We engineer the integration middleware/handlers, build retry queues, write automated unit tests, and simulate simulated 500 error drops to verify recovery.

PHASE 03 — DAY 5

Live Sandbox Demo & PR Handover

We trigger real end-to-end transactions on sandbox with your team, deliver the tested Git pull request, handover Postman suites, and activate the 14-day warranty.

Sprint Pricing

Predictable cost. Guaranteed delivery.

Fixed 5-Day Sprint

CRM & Third-Party API Integration

€2,800

Starting rate • Fixed sprint scope

What You Receive:

✓ Bi-directional sync between 2 systems
✓ Up to 5 core entities/objects synced
✓ Dead-Letter Queue & Retry Automation
✓ Postman Test Suite + OpenAPI Spec

Billing & Guarantee:

✓ 50% upfront to reserve calendar slot
✓ 50% upon sandbox acceptance
✓ 100% Code Ownership in your Git repo
✓ 14-day warranty for rapid bug resolution

Reserve Your 5-Day Sprint Slot (From €2,800)

Technical FAQ

Frequently asked questions

What tech stack do you build the middleware in?

We adapt to your architectural stack. For cloud environments, we write clean TypeScript/Node.js or Java (Spring Boot) deployable to AWS Lambda, ECS, or GCP Cloud Run. For native Salesforce integrations, we develop optimized Apex REST callouts and Platform Events.

How do you handle API rate limits between platforms?

We engineer queue-based backoff and cursor pagination. When external endpoints return HTTP 429 Too Many Requests, our worker delays retries until rate limit refresh headers expire, ensuring zero dropped records.

What access permissions do you need?

We only require sandbox developer access and scoped API sandbox tokens. We never touch production environments during the sprint. All deliverables are handed over as pull requests for your review and deployment.

What happens if our API requires custom HMAC webhook signatures?

We natively implement cryptographic signature validation (SHA-256 HMAC) to reject spoofed webhooks and guarantee zero unauthorized ingress.

Secure Your Sprint

Stop Losing Customer Records to Fragile Glue Code.

Book your 5-day integration sprint. We accept maximum 2 integration sprints per month to ensure dedicated senior engineering focus.

✔ Direct senior engineering by Waleed Rafique.

✔ 100% repository PR handover with test coverage.

✔ 14-day bug warranty included.