I handle complex backend engineering, custom API integrations, and data pipelines under your agency's brand so you can close high-value client deals without adding technical overhead.
Max Garceau
White-Label Developer for Agencies
Mailchimp & Ecommerce Integrations
Backend Systems & API Specialist
Integration Engineer
White-Label Integration Partner for Marketing Agencies
Core Integration Capabilities
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Marketing & E-commerce Hubs Native-level integrations and automated data syncs across Mailchimp, Shopify, Wix, and custom web platforms.
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Data & Lead Pipelines Custom Lead Ads API integrations (Meta, Google, LinkedIn, Snap, TikTok), CRM/ERP connectors, and automated booking and scheduling engines.
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Enterprise-Grade Reliability Event-driven architectures, fault-tolerant syncs, and large-scale data migrations engineered for high availability and zero data loss.
Key Services
1. White-Label Integration Engineering
Custom API connectors, webhooks, and backend pipelines built strictly behind the scenes. You maintain the client relationship, set the markup, and own the account. I engineer, test, and document the build under your brand.
2. Paid Integration Audit (1-Week Discovery)
A structured 1-week engagement to evaluate your client’s technical requirements, legacy databases, or custom API endpoints. I map data flows, identify sync gaps, and deliver an actionable execution blueprint your agency can present under its own logo.
How I Work With Agencies
- Audit & Scope: We review your client's API requirements and map out the data architecture without risking your team's reputation.
- Build Behind the Scenes: I develop, test, and handle the heavy backend engineering under a white-label setup.
- Deploy & Hand Off: Clean delivery with clear technical documentation so your agency delivers a seamless solution.
Case Studies
Works
New Jersey Policy Perspective
Website
Clare Matrix
Website
Rocky Mountain Communities
Website
CHIRLA
Website
Alabama Arise
Website
Greenlining
Website
About Me
White-Label Integration Partner for Marketing Agencies
Senior Integration Engineer specializing in Mailchimp, Shopify, and custom API pipelines.
I’m a senior fullstack engineer with 8 years of experience building scalable backend systems, microservices, and high-volume data pipelines.
Most recently, I built e-commerce and integration pipelines at Intuit | Mailchimp, where I engineered event-driven architectures, automated lead syncing systems, and cross-platform integrations with partners like Wix and Canva. Prior to that, I led backend engineering at Modern Tribe, architecting high-availability API infrastructure for high-scale enterprise clients.
Today, I offer white-label integration engineering and technical discovery audits to marketing agencies. When your clients need custom data flows, complex platform connections, or reliable webhook architectures, I handle the engineering behind the scenes so your team can deliver high-value technical solutions with confidence.
- Location US (Remote)
- Availability White-Label / Project-Based
- Specialization APIs, Webhooks, Data Pipelines
- Response Time < 24 Hours
Why Agencies Partner With Me
Enterprise Experience
Proven track record building high-availability, fault-tolerant infrastructure used by millions.
White-Label First
Strict behind-the-scenes execution. I respect your client relationship and work entirely under your agency's brand.
Direct Senior Engineering
You work directly with a senior fullstack lead from discovery to deployment. No account managers, middle-men, or unvetted code.
Fault-Tolerant Architecture
Engineered for high reliability, idempotent event processing, automated retry mechanisms, and robust error handling.
Resume
Experience
2026 - Present
Founder & Integration Engineer
Garceau Integration Engineering
Partnering with small-to-mid-sized marketing agencies (5–50 employees) as a white-label technical partner. I engineer, deploy, and maintain custom platform integrations (Mailchimp, Shopify, Wix, CRMs, ERPs, Lead APIs) under your brand so you can close high-value client deals without taking on technical debt or in-house engineering overhead.
2024 - 2026
Senior Fullstack Software Engineer
Intuit | Mailchimp
2021 - 2024
Lead Backend Developer
Modern Tribe
At Modern Tribe, I served as the lead engineer for Café Bon Appétit, a $1M annual account serving a 1,200+ cafeteria management company with a network of 450+ active sites and over 250k daily visits, including clients such as Google, Uber, Oracle, SAP, Adobe, and more. I architected new applications and APIs while optimizing legacy systems, providing technical guidance across teams to ensure scalable, high-performance delivery.
Lead engineer for Café Bon Appétit ($1M annual account); Directed backend architecture and feature development across a 450+ site enterprise platform (250k daily visits), consulting directly with site owners to align technical roadmap with client requirements. Mitigated active DDoS attacks via Cloudflare WAF, aggressive caching, and IP whitelisting; spearheaded a digital signage overhaul to eliminate critical performance bottlenecks; and implemented database sharding to scale high-volume data growth.
Enhanced promotion capabilities by creating Promo Publisher, an internal app that syncs marketing efforts across external services via API, resulting in a significant increase in campaign consistency and quality.
Led modernization of a 12-year-old Multi-Tenant Cafeteria CMS by architecting a Laravel API to modernize a 12-year-old database and coordinated across 3 engineering teams to standardize database access protocols and OpenAPI specifications, achieving 10x+ performance gains while establishing unified team standards.
2018 - 2021
Full Stack Web Developer
Red Earth Design
As a core developer on a nimble, high-growth, 8-person startup team, I owned the end-to-end delivery of custom web platforms—from initial concept to launch—while also building internal tools and libraries that multiplied our efficiency across dozens of client sites.
Architected a programmatic site network with a global admin dashboard, empowering users to easily customize branding and content at both the global and local level. Managed the entire network efficiently using WP Remote.
Created and maintained customized, reusable themes tailored to the specific preferences of our design partners, fostering long-term collaborations with firms like Bixler Creative and ensuring rapid, consistent project delivery.
Developed internal software libraries and established technical best practices, enabling the small team to maintain high-velocity development while mentoring junior members and ensuring long-term retention of key design partners.
Education
2010 - 2013
Berklee College of Music
Boston, MA
- Graduated Magna Cum Laude
Platforms & Integrations
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Mailchimp, Shopify, Wix, Canva, WooCommerce
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Meta Ads, Google Ads, LinkedIn Ads, Snap Ads, TikTok Ads
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CRM and ERP integrations
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Ecommerce and booking systems
Tech Stack
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Kafka, Kotlin, Spring Boot
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TypeScript, Node.js, React
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Python, FastAPI
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Laravel, WordPress, PHP
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AWS, GCP, Docker, Kubernetes
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PostgreSQL, MySQL, MongoDB, BigQuery, OpenSearch, Elasticsearch
Core Capabilities
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Event-driven architecture
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API design and OpenAPI specifications
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Data migration pipelines
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Webhook and real-time sync systems
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Fault-tolerant and idempotent design
Observability & Reliability
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Splunk, Grafana, Datadog, Bugsnag
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CI/CD (GitHub Actions)
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Cloudflare
Quote
Beyond Max's technical excellence, his leadership as the project's lead engineer has been invaluable. He consistently provided insightful consultation to our clients regarding long-term planning and migration strategies, ensuring alignment with business goals and technological advancements. Max possesses a rare blend of technical expertise, strategic vision, and collaborative spirit, making them a tremendous asset at Modern Tribe.
Chris Kindred
Director of Engineering at Modern Tribe
Quote
Instead of saying that something isn’t possible and shutting things down, Max approaches things constructively. He brings a high level of quality to everything he does.
Emma Barker
Owner of Red Earth Design
Get in Touch
Have a client integration coming up or need a 1-week discovery audit? Send me an email or drop me a line on LinkedIn to discuss the project.
- Email: max@maxgarceau.com
- LinkedIn LinkedIn
- Availability Remote (US Timezones)
- Response Time Within 24 Hours