API integrations.
Reliable webhooks and resilient pipelines.
We connect Stripe billing, CRMs, ERPs, and databases with resilient background queues, automated retries, and cryptographic signature checks.
90+ API Projects
Brittle API connections fail silently during network hiccups, drop incoming payment webhooks, and trigger record mismatches across software tools.
FixrWeb builds typed API gateways with Redis-backed message queues, cryptographic HMAC signature verification, and automated retry backoffs.
Zero data loss guarantee, sub-100ms API responses, automated failure alerts, and 100% code ownership.
Performance numbers.
Tested architecture standards built into every backend pipeline.
Zero dropped webhooks
Fast gateway latencies
HMAC signature verification
Durable background workers
What we build.
Payment Gateways
Custom Stripe Checkout sessions, subscription plans, customer portals, and automatic billing alerts without missed payments.
- Idempotent webhook handling stops duplicate charges
- Currency conversions and automatic tax calculations
- Customer portal setup for invoices and card updates
Background Queues
Durable message queues built with Redis and BullMQ so long tasks finish without slowing down your site.
- Automatic retries with exponential backoff delays
- Dead-letter queues for unprocessable messages
- Controlled worker speeds prevent vendor rate limits
Custom API Gateways
Fast API servers built with Node.js and TypeScript with clean input validation and quick database lookups.
- Strict schema validation on every request
- Connection pooling for fast database queries
- Scoped API tokens and key authentication
CRM and ERP Sync
Connect your sales and inventory software with your website database for real-time customer and order updates.
- Two-way data sync between Salesforce and HubSpot
- Conflict resolution rules preserve correct records
- Audit logs capture every payload transfer
Webhook Listeners
Secure webhook receiver endpoints that verify cryptographic signatures and store raw payloads immediately.
- Cryptographic HMAC signature checks
- Fast response codes prevent vendor timeouts
- Append-only event logs for easy auditing
Automated Data Sync
Scheduled background workers that reconcile balances, update inventory counts, and clean old records.
- Nightly reconciliation catches mismatched records
- Batch payload processing saves server memory
- Error alerts post directly into team chat channels
How we compare.
How FixrWeb resilient code webhooks compare against brittle third party connectors and no-code tools.
Feature Pipeline spec | Resilient Code Webhooks Custom TypeScript engine | Brittle Connectors Third party no-code tools |
|---|---|---|
Payload Delivery Durability guarantee | Durable queues store every payload before processing | Silent drops during network hiccups or server restarts |
Retry Policy Error recovery | Automatic exponential retries with dead-letter storage | Halts after few attempts without failure alerts |
Rate Limiting Vendor quota controls | Redis token buckets keep traffic within vendor limits | Exceeds rate limits and triggers 429 server blocks |
Security & Signatures Payload authenticity | Cryptographic HMAC signature check on every request | Exposed webhook endpoints without signature checks |
Monthly Cost Ongoing expenses | Runs on your server with zero per-task charges | Expensive monthly tiers based on webhook volume |
Code Ownership Vendor independence | 100% owned source code in your private Git repository | Locked into third party platforms with zero export |
Before and after.
Real performance comparison from migrating a brittle third party connector to a typed code pipeline.
Webhook Pipeline Audit
Stripe payment events and Salesforce data sync
Site upgrades.
How we rebuild brittle connectors, tune background queues, and secure API endpoints.
Webhook Hardening
Add HMAC signature checks, duplicate event filters, and immediate 200 responses to prevent timeout retries.
Queue Worker Tuning
Migrate sync tasks to Redis BullMQ workers with exponential backoff delays and dead-letter queues.
Token Rate Limiting
Add token bucket rate limiters in Redis to keep API requests within third party vendor boundaries.
Database Sync Repair
Fix mismatched records between payment gateways and internal databases with daily reconciliation scripts.
How we work.
From initial API inspection to live load testing and deployment.
Audit
We review your API docs, inspect current endpoints, and map every data payload across your systems.
Schema Design
We write TypeScript types and Zod schemas to ensure every field matches exact data formats.
Development
We build lightweight webhook receivers, BullMQ background queues, and database connectors.
Load Testing
We run synthetic webhooks, simulate network dropouts, and verify automatic retry recovery.
Deployment
We launch pipelines in Docker containers with structured logging and automated health probes.
Built-in security.
Defense against spoofed webhooks, secret exposure, and denial of service traffic spikes.
HMAC Signatures
Every incoming webhook verifies cryptographic hashes using secret keys to block unauthorized fake calls.
Secret Vaults
API keys and connection tokens stay in encrypted environment vaults instead of hardcoded repository files.
Rate Limiting
Redis rate limiters protect endpoints against denial of service spikes and third party vendor throttling.
Dead-Letter Queues
Unprocessable messages move into dead-letter storage with instant alerts so engineers can inspect and replay.
Tools we use.
Modern backend runtimes, distributed queues, and developer testing tools.
Fast event-driven JavaScript engine handling concurrent network connections with low latency.
End-to-end type safety that validates request bodies before code touches your production database.
In-memory queue manager handling job retries, scheduled delays, and worker concurrency.
Official Stripe SDK handling Checkout sessions, customer portals, metered subscriptions, and invoices.
Automated integration test suites verifying response schemas, status codes, and error responses.
Isolated deployment containers ensuring identical runtime environments between staging and cloud production.
What you receive.
Complete project deliverables with full code ownership, test suites, and support.
100% Code Ownership
Private Git repository with clean source code, Docker configs, and zero third party fees.
OpenAPI Test Suite
Interactive API documentation with Postman collections so your team can test every route easily.
Health Dashboard
Real-time queue metrics and error tracking with instant notifications sent to your team chat.
30-Day Warranty
Direct engineer support after launch with quick answers and bug fixes for 30 days.
Related guides.
Technical articles, hosting infrastructure, and specialized engineering services.
Custom App Development
High-scale web applications built with TypeScript, Node.js, and PostgreSQL.
Internal Dashboards
Admin portals, reporting systems, and operational hubs built for company teams.
Managed Cloud Hosting
Fast managed cloud servers with Redis caching, container isolates, and automatic backups.
Security Hardening
API secret protection, firewalls, and defense against common web vulnerabilities.
Speed Optimization
Database indexing, query tuning, and memory caching for sub-100ms response times.
Website Maintenance
Continuous software updates, database backups, uptime checks, and fast bug fixes.
Simple pricing.
Clear scope and milestones before work begins.
Starter Webhook Setup
Single webhook listener with signature verification, duplicate event checks, and direct database insert.
Fixed scope quote upon inquiry
- HMAC signature verification
- Duplicate event deduplication
- Direct database record insert
- OpenAPI test schema included
Business API Pipeline
Two-way data pipeline connecting payment gateways, CRM software, and external tools with automated retries.
Milestone schedule upon inquiry
- Two-way data synchronization
- Stripe billing and CRM connection
- Redis retry queue for failed jobs
- Slack alerts for pipeline errors
Enterprise Queue Engine
Distributed worker fleet with BullMQ queues, dead-letter storage, rate limiting, and 24/7 health probes.
Detailed roadmap upon inquiry
- Distributed BullMQ worker queues
- Dead-letter queue with manual replay
- Token bucket rate limit controls
- Full Docker deployment manifests
Common questions.
Everything you need to know about our webhook pipelines, queue architecture, and support guarantees.
Speak directly with a senior backend engineer about your data flow, timeline, or API requirements.
Talk to team01 How do you prevent data loss during webhook failures and network outages?
02 What is HMAC signature verification and why is it needed?
03 How do background worker queues handle third party API rate limits?
04 Can you connect Stripe payments with our accounting and CRM software?
05 What happens when a webhook endpoint crashes or goes offline?
06 How do you stop duplicate transactions when webhooks send multiple times?
07 Do you build custom API connections or use tools like Zapier?
08 What tech stack do you use for API gateways and queue workers?
09 Can you sync data both ways between Salesforce and PostgreSQL?
10 Who owns the integration code and API documentation after launch?
11 What warranty and support do you provide after the pipeline goes live?
Ready for reliable API pipelines?
Zero dropped webhooks with durable queue workers.
Schedule a technical review with our backend engineers. We review your API specifications and deliver an architectural integration proposal within 48 hours.