SENIOR FULL-STACK & AUTONOMOUS AI SYSTEMS ENGINEERING

Engineering High-Throughput Software &
Autonomous AI Systems That Scale Enterprises.

StackandCode partners with growing businesses and digital agencies to build custom full-stack web platforms, private vector RAG pipelines, and multi-CRM synchronization engines. Direct senior engineering. Zero agency bloat. 100% code ownership.

✓ 100% Code & IP Ownership ✓ Direct CTO & Architect Access ✓ 30-Day Post-Launch Warranty
500+ Automated Workflows & Routines Deployed
15+ hrs Executive Bandwidth Recovered Weekly
< 45s Autonomous Lead & Deal Response SLA
100% Client Code Ownership & IP Transfer
Scroll to explore technical practices
Enterprise Integrations • Production Architecture Stack
GoHighLevel API v2 ServiceM8 REST API Zoho CRM PostgreSQL & pgvector FastAPI & Python 3 Node.js & TypeScript Claude 3.5 & OpenAI BullMQ & Redis Queues Fathom Intelligence Slack & WhatsApp APIs Stripe Billing Docker & Cloudflare
🛡️ CORE ENGINEERING PRACTICES

Specialized Technical Capabilities

We design, build, and deploy production software systems across four specialized disciplines—engineered with resilient rate limits, idempotent queues, and strict data integrity.

01 • FULL-STACK SOFTWARE

Custom Web Platforms & Client Portals

Scalable MERN/PERN web applications, authenticated multi-tenant customer portals, and internal operational dashboards with granular role-based permissions.

02 • ENTERPRISE AI & RAG

Autonomous AI Agents & Vector RAG

Private semantic knowledge engines powered by PostgreSQL/pgvector, hybrid BM25 retrieval, and tool-calling agents that execute API actions with zero hallucinations.

03 • SYSTEM INTEGRATIONS

ServiceM8 & CRM Real-Time Sync Engines

Event-driven two-way webhook bridges connecting ServiceM8 with GoHighLevel, Zoho, and QuickBooks—preserving multi-tiered relational hierarchy and job history.

04 • WORKFLOW AUTOMATION

Automated & Managed Operations Pipelines

Hybrid operational pipelines automating 80% with custom code and scheduled tasks, backed by a dedicated operations team for zero-error document formatting and triage.

⚡ VERIFIED PRODUCTION CASE STUDIES

Proven Systems Running in Production

Explore real architectural solutions engineered from our operational portfolio. Tested under real traffic with zero simulated results.

View All 12 Blueprints with Flowcharts →
SCHEDULED INTELLIGENCE • CRM Live in Prod

Client Project Updates Engine (Fathom to GHL & Slack)

Automated weekday engine that digests Fathom client recordings, generates HTML scope notes on GHL contacts, assigns team tasks with due dates, and posts a consolidated Slack digest.

⚡ Outcome: 10+ hrs/wk saved • Zero Duplicate Notes
Python 3 Fathom API GHL API v2 Slack Webhooks
See architecture diagram →
INTEGRITY WATCHDOG • RETAIL Live in Prod

Omnichannel Hospitality Live Order Monitor & Mutation Watchdog

Scheduled task checking live back-office order pages every two hours, diffing order hashes to detect new, altered, or deleted orders with zero risk of silent platform order loss.

⚡ Outcome: 0 Silently Lost Orders • 100% Data Integrity
Python Stdlib Regex Tokenizer JSON Snapshot Audit CSV
See architecture diagram →
ETL MIGRATION • RELATIONAL ARCH ⚡ Prod Tested

ServiceM8 to GoHighLevel Resumable Migration Engine

High-performance Node.js ETL engine mapping ServiceM8 multi-tier hierarchies into GHL native Custom Objects with 3 two-way associations, handling 1,200+ jobs per company safely.

⚡ Outcome: 100% Relationships Preserved • 24 Mo Data Migrated
Node.js ServiceM8 API GHL Custom Objects Rate-Limiter
See architecture diagram →
⚖️ STRATEGIC COMPARISON

Legacy Operations vs. Engineered Architecture

Why modern businesses replace fragile manual processes with deterministic software and autonomous systems.

Legacy Manual Operations

  • × 2+ hours daily wasted: Copying records between spreadsheets, emails, and CRM leads.
  • × 4+ hour lead response latency: Inbound prospects abandon due to lack of after-hours follow-ups.
  • × Disconnected data silos: ServiceM8, GHL, and accounting tools operate out of sync with lost job histories.
  • × Bloated agency contracts: $30k+ quotes, offshore contractor handoffs, and 6-month timelines.

Engineered Autonomous Systems

  • ✓ Instant event-driven execution: Systems trigger, parse, and synchronize in <5 seconds.
  • ✓ 24/7 <45s response SLA: Inquiries qualified and meetings booked into calendars autonomously.
  • ✓ Relational data integrity: Two-way webhook synchronization with zero data loss or dropped records.
  • ✓ Direct senior engineering: 1-on-1 CTO access, rapid 2-week sprints, and 100% code ownership.
📐 DELIVERY METHODOLOGY

The 4-Stage Engineering Sprint

A proven, transparent engineering lifecycle designed to eliminate technical debt, ensure zero downtime, and deliver measurable ROI.

01

Architecture Audit & Technical Blueprint

We inspect your current workflows, API quotas, and data models to draft a definitive technical specification before writing a single line of code.

02

High-Velocity Engineering Sprint

Senior-only development implementing clean, typed, modular code with automated retries, rate limiters, and resilient database schemas.

03

Integration Testing & Edge-Case Verification

Dry-run rehearsals against live edge cases, webhook concurrency stress tests, and automated failure-path recovery validation.

04

Production Handoff & 30-Day Warranty

Zero-downtime cutover, complete intellectual property and source code repository transfer, backed by our 30-day post-launch warranty.

StackandCode Systems Engineering Practice
📍 Salem, India

StackandCode Engineering Practice

Senior Systems Architecture & Direct Delivery

"When you partner with StackandCode, you engage directly with senior engineering leadership. We don't employ account executives, commission salespeople, or junior subcontractors. Our lead systems engineers architect your infrastructure, write and review production code, and ensure your operational systems scale without technical debt. Headquartered in Salem, India, delivering mission-critical software for clients across Australia, the US, the UK, and India."

< 24h Direct Technical Response
100% Source Code Ownership
Zero Subcontractor Bloat
❓ ENTERPRISE FAQ

Frequently Asked Questions

Key operational, legal, and technical questions answered with executive clarity.

Who owns the code, pipelines, and data once deployed?
You own 100% of all intellectual property, source code, database schemas, and documentation. Everything is committed to your private GitHub or GitLab repositories, with complete IP transfer upon milestone completion. We charge zero recurring vendor-lock software license fees.
How do you handle API rate limits and data loss prevention?
All external API connections (ServiceM8, GoHighLevel, Zoho, Stripe) are protected by asynchronous queue pools (e.g. BullMQ / Redis governed at strict request thresholds), automated exponential backoff retry algorithms, and immutable deduplication ledgers to guarantee zero dropped payloads or silent mutations.
What is the typical sprint timeline for a custom automation project?
Focused automation pipelines and two-way CRM sync engines typically deploy within 1 to 2 weeks. Custom full-stack web applications, authenticated portals, and enterprise RAG systems take 2 to 4 weeks. We work in disciplined, sprint-based cycles with continuous deployment previews.
What post-launch support and warranty do you provide?
Every custom build is backed by a 30-day comprehensive post-launch warranty covering any edge-case bug fixes and schema adjustments. Following launch, we offer dedicated monthly SLA maintenance retainers for continuous optimization and feature extension.
🛡️ EXECUTIVE ARCHITECTURE GUIDE • 2026 EDITION

The 2026 Business Automation & AI Blueprint

Eliminate manual spreadsheet bottlenecks and unintegrated software stacks. Download our battle-tested technical blueprint featuring 25 production-proven automation recipes.

✓ 25 Production-Tested Recipes: Inbound lead validation, deal sync, and invoice automation
✓ ServiceM8, GHL & Zoho Sync: Resumable webhook architecture blueprints
✓ Private Vector RAG Infrastructure: Setup guide with zero hallucinations
📄 Executive PDF • ⚡ Instant Access • 🔒 100% Free • No Spam

Download Blueprint

Free technical PDF delivered instantly

🔒 Strictly confidential. Instant access immediately.

🛡️ READY TO SCALE YOUR OPERATIONS?

Ready to Modernize Your Technical Operations?

Schedule a technical discovery session directly with our senior systems engineering team. We'll evaluate your workflow architecture and provide a concrete engineering roadmap with zero commitment.