Julián Bagilet
    Services

    API Integration Services That Never Silently Break

    500+ integrations shipped. We connect your CRM, ERP, payment gateway, email, Slack, databases, custom APIs, and legacy systems — all talking to each other reliably, with retries, monitoring, and alerts baked in.

    Investment

    USD $5k – $100k+

    Timeline

    1–16 weeks

    Team

    6 seniors

    Projects

    350+

    The problem

    Manual processes are a hidden tax on your business

    Every modern business runs on 50+ SaaS tools and internal systems that should talk to each other — but usually do not. The cost of not integrating them: duplicate data entry, stale reports, broken customer journeys, compliance gaps, lost deals. Most companies estimate they lose 10–20% of team productivity to tool switching and manual data shuffling.

    We do API integration the right way. Not "drag-and-drop on Zapier and hope it works" — real integrations with proper authentication, rate-limit handling, idempotency, retries, dead-letter queues, monitoring, and documentation. 500+ production integrations. Zero silent failures.

    What you get

    Everything built to production standards

    Every major protocol

    REST, GraphQL, SOAP, webhooks, WebSockets, EDI, SFTP. We handle whatever your vendors ship.

    Production-grade reliability

    Retries, idempotency, rate limiting, dead-letter queues, circuit breakers. Battle-tested patterns.

    Data transformation

    Mapping, normalization, enrichment, validation — whatever shape your systems need.

    Custom middleware when needed

    When off-the-shelf iPaaS hits limits, we build tailored middleware in Node.js or Python.

    Versioning and migrations

    API v1 → v2 migrations without downtime. Backward-compatible rollouts.

    Observability built-in

    Every call logged. Latency and error metrics. Alerts to Slack when SLAs break.

    Our process

    From audit to production in 4 steps

    01

    Discovery audit

    60–90 min structured session. We map every step of your current process and quantify hidden costs.

    02

    Architecture design

    We pick the right stack (n8n, Make, custom) and document the full automation blueprint. You approve before we build.

    03

    Build & test

    Weekly demos. 50+ real-world test cases. Error handling, retries, and monitoring baked in from day one.

    04

    Deploy & optimize

    Live monitoring, team training, 30 days of post-launch support. Retainer optional for ongoing optimization.

    Real use cases

    Proven automations with real numbers

    01

    Stripe ↔ QuickBooks Sync

    Automatic transaction sync from Stripe to QuickBooks with proper tax coding, refund handling, and multi-currency support. Eliminates 15 hours/week of manual reconciliation.

    02

    Shopify ↔ ERP Multi-Channel

    Real-time order and inventory sync between Shopify, Amazon, MercadoLibre, and SAP/Odoo ERP. Handles split orders, returns, and price updates.

    03

    HubSpot ↔ Salesforce Migration

    Bi-directional CRM sync with conflict resolution, custom field mapping, and historical data migration. Used during M&A platform consolidations.

    04

    Twilio SMS/Voice Orchestration

    Custom middleware orchestrating SMS, voice, and WhatsApp across Twilio, MessageBird, and Retell AI for multi-channel customer engagement.

    05

    Bank API Integrations

    Direct integrations with Plaid, Mercury, Mercadopago, and MODO APIs for financial reconciliation, automated payments, and fraud detection.

    06

    Legacy ERP Bridge

    REST wrapper around SOAP-based SAP/AS400 systems so modern tools (Slack bots, mobile apps, analytics) can consume legacy data safely.

    Tech stack

    The right tool for every job

    We are tool-agnostic. Open source when possible, commercial when it makes sense. You own the code and the credentials, always.

    n8nMakeZapierPythonNode.jsSupabasePostgreSQLAWSOpenAIClaudeReactPlaywright
    Full scope

    Everything included in your engagement

    No hidden costs, no surprise invoices, no change orders for things already promised. Everything below ships in every project.

    Fixed scope, fixed price
    30 days post-launch support
    Full IP transfer on delivery
    • Integration audit and architecture doc
    • Authentication setup (OAuth 2.0, JWT, API keys, SAML)
    • Data mapping and transformation logic
    • Webhook receivers with idempotency
    • Rate limit handling and adaptive throttling
    • Retry logic with exponential backoff
    • Dead-letter queue for failed messages
    • Monitoring dashboard (latency, errors, throughput)
    • Slack/email alerting on failures
    • Complete technical documentation
    • Load testing with realistic volumes
    • 30 days post-launch support

    Book a free 60-minute automation audit

    We review one of your processes, identify hidden costs, and give concrete recommendations — no commitment, no sales pitch.

    Social proof

    What clients say

    "Julián's team automated our entire client onboarding. We went from 3 days of manual work to 2 hours. ROI in 4 months, and we sleep better at night."
    SK

    Sarah K.

    COO, B2B SaaS

    "I hired 4 different agencies before finding Julián. They shipped in 6 weeks what the others had been selling us for 9 months. No juniors, no BS."
    MT

    Michael T.

    CEO, Fintech

    "We replaced Salesforce with a custom automation platform for 1/10th the cost. Their team knows what they're doing and it shows."
    LM

    Laura M.

    Head of Ops, E-commerce

    FAQ

    Frequently asked questions

    Something else on your mind? Book a 60-min audit and we'll answer anything.

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    Ready to stop paying for tools you don’t need?

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