Bridge the gap between modern cloud platforms and legacy ERPs/WMS. We build robust, containerized microservices, high-throughput message queues, and automated data synchronization pipelines.
Why Generic No-Code Connectors Break in Enterprise Operations
Enterprises rely on disjointed platforms: corporate clients log issues in ServiceNow, field operations track work in Zoho Desk, identity sits in on-prem Active Directory, and warehouse orders run on legacy ERPs. Patching them with fragile generic tools creates operational paralysis.
Custom Middleware Architecture & Workflow Engineering
Built by senior software engineers and systems architects to deliver unyielding reliability, high throughput, and complete data integrity.
We architect high-performance, containerized backend middleware utilizing Node.js Express and Python Flask/FastAPI. Deployed on hardened Linux environments with Nginx reverse proxies and PM2 process clustering, our microservices handle complex data transformations, rate-limited polling, webhook ingestion, and real-time bidirectional syncing across disparate corporate endpoints.
Connect your enterprise clients' ServiceNow instances with your operational Zoho Desk environment. Our custom middleware intercepts ServiceNow webhooks and email payloads, uses Cheerio DOM parsers to extract data from nested HTML tables, maps caller identities and severity levels, and updates Zoho Desk in real time. Resolution notes, attachments, and status updates flow back into ServiceNow automatically.
Free your IT helpdesk from endless password reset tickets. QueryTel develops custom Python microservices that execute automated account unlocks, password resets, and user provisioning directly in on-premise Active Directory. All transactions communicate over encrypted LDAPS (Port 636) with certificate validation, coupled with out-of-band Multi-Factor Authentication to block social engineering attacks.
When third-party cloud APIs experience outages or rate-limit your requests, standard webhooks lose transactions. QueryTel implements Redis and BullMQ message buffering. Inbound payloads are immediately written to durable queues, processed with automated exponential backoff retries, and diverted to Dead-Letter Queues (DLQs) with instant alerting if an API remains unreachable.
Connect isolated on-premise industrial databases (SQL Server, Oracle, AS400, legacy WMS) with modern cloud platforms without exposing internal networks to the public internet. QueryTel deploys outbound-only hybrid integration agents that poll internal databases securely, batch changes, and transmit encrypted updates over mutual TLS (mTLS) to your cloud APIs.
For complex multi-system business logic, QueryTel deploys self-hosted, enterprise-hardened instances of n8n. Unlike SaaS workflow platforms with strict data transfer limits and US cloud hosting, our n8n deployments reside entirely on sovereign Canadian servers, orchestrating multi-step workflows across HR systems (BambooHR, ADP), finance (QuickBooks, NetSuite), and customer portals.
The 4-Stage Middleware Engineering Framework
A rigorous software engineering lifecycle ensuring high performance, mathematical data integrity, and complete security validation.
We document data models, API endpoints, authentication mechanisms, and webhook schemas across your source (ServiceNow, ERP) and target (Zoho Desk, Active Directory) systems.
We develop custom Node.js and Python microservices with HTML table parsing, idempotency keys, echo-suppression headers, and Redis queue management.
We simulate edge cases, malformed payloads, network disconnects, and burst traffic loads to validate self-healing logic and dead-letter queue behavior.
We deploy the middleware to hardened Linux instances with PM2 process clustering and Nginx SSL termination, integrating health telemetry directly with our Canadian NOC.
Founded in 2013 and headquartered at Exchange Tower, 130 King Street West, Suite 1900, Toronto, Ontario M5X 1E3, QueryTel maintains dedicated software engineering and systems architecture teams specializing in enterprise automation and custom middleware.
Whether you need to bridge corporate ServiceNow instances with outsourced field technicians across the Greater Toronto Area, or synchronize warehouse management databases across Montreal, Calgary, and Vancouver, QueryTel delivers mathematically reliable software integration.
Custom Middleware & Automation: Technical FAQ
Direct answers for Software Engineering Leaders, IT Directors, and Enterprise Operations Executives.
Basic no-code tools like standard Zapier break down when handling complex enterprise ticketing workflows. They cannot parse unformatted HTML email tables or dynamic DOM structures generated by legacy ticketing systems, struggle with cyclic infinite loop prevention (where an update in system A triggers system B, which re-updates system A indefinitely), lack idempotent state tracking, and cannot handle enterprise API rate limits or dead-letter queue buffering during network disconnects. QueryTel engineers custom Node.js and Python microservices deployed on hardened Linux environments with PM2 clustering, Nginx reverse proxies, and cryptographic HMAC webhook verification to guarantee 100% reliable, bidirectional ticket synchronization without data loss.
QueryTel develops custom Node.js Express webhook engines. When an incident is logged or updated in ServiceNow, the webhook payload is ingested by our middleware, parsed, and scrubbed. If the source data contains HTML email tables or nested JSON, our engine uses Cheerio DOM parsing and regex extraction to normalize caller information, priority levels, category codes, and attachment URLs. It then queries the Zoho Desk REST API to locate the corresponding ticket or create a new one, synchronizing comments, status changes, and time entries bidirectionally. We enforce strict loop-detection headers so updates flow smoothly in both directions without duplicate notifications.
Standard automated scripts frequently transmit Active Directory credentials in clear text over unencrypted LDAP (Port 389) or expose administrative service accounts with excessive permissions. QueryTel engineers custom Python Flask microservices that communicate exclusively over encrypted LDAPS (Port 636) utilizing TLS certificates. When a user requests an account unlock or password reset, our system verifies their identity via out-of-band Multi-Factor Authentication (MFA via SMS, authenticator app, or email OTP). Only upon mathematical cryptographic verification does our least-privilege service account execute the change, completely insulating domain controllers from credential eavesdropping.
Our middleware architectures can be deployed within your dedicated cloud environment (AWS Canada Central, Azure Canada Central, or private Linux servers) or hosted in QueryTel's sovereign Canadian colocation facilities in Toronto and Montreal. We build enterprise-grade reliability using hardened Ubuntu/Debian LTS Linux, Nginx reverse proxies with automatic Certbot SSL certificate renewal, PM2 process management with zero-downtime cluster restarts, Redis queue buffering, and automated health check endpoints monitored 24/7/365 by our Mississauga Network Operations Center.
Yes. Many Canadian distribution and manufacturing facilities rely on legacy on-premise databases (AS400, Microsoft SQL Server, Oracle, or legacy ERPs) that lack native REST APIs. QueryTel deploys secure hybrid middleware connectors. Our connector runs behind your corporate firewall, connects to local databases via encrypted read-only views, and safely communicates with cloud APIs (Salesforce, Shopify, Zoho, Microsoft 365) using outbound HTTPS/REST webhooks. This eliminates the dangerous need to open inbound firewall ports into your internal operational network.
Schedule a confidential technical scoping session with QueryTel's senior software architects. We will analyze your API endpoints, design your bidirectional ITSM or LDAPS workflow architecture, and provide a rapid proof-of-concept timeline.
Corporate HQ: Exchange Tower, 130 King Street West, Suite 1900, Toronto, ON M5X 1E3 · Serving Enterprise Clients Across Canada
