Cart Back is a software development agency with a modern engineering stack and deep, hands-on expertise across the Meta platform ecosystem. This page details the technologies we use and the Meta APIs we build with every day.
Our engineers build production-ready applications across every part of Meta's developer platform. Below are the specific APIs and platforms we work with — for client projects, custom apps, and ongoing integrations.
End-to-end development of WhatsApp Business solutions — Cloud API and On-Premises API, template message workflows, interactive messages (lists, buttons, flows), media handling, webhooks, and account onboarding.
Conversational experiences built on Facebook Messenger — Send/Receive API, handover protocol, persistent menus, quick replies, generic templates, one-time notification tokens, and customer chat plugin.
Server-side event tracking implementations connecting our clients' web, app, and offline events directly to Meta — improving signal quality, attribution accuracy, and ad optimization beyond pixel-only setups.
Programmatic ad campaign management — campaign creation, ad set targeting, creative management, custom audiences, lookalike audiences, automated rules, and Insights API for performance reporting.
Instagram business account integrations — content publishing, comment moderation, Stories & Reels APIs, Instagram Insights, hashtag search, mentions, and Direct Messaging via the Messenger Platform.
Catalog ingestion, product feed automation, and synchronization with Facebook & Instagram Shops — powering Dynamic Product Ads, Shopping tags, and Commerce experiences for retail clients.
Custom Meta App development end-to-end — app creation in App Dashboard, permissions and feature configuration, Webhooks subscriptions, Login with Facebook, and App Review submissions with documented use cases.
Business Manager and Commerce Manager setup, system user provisioning, asset assignment, partner integrations, and Business Verification documentation support for our clients.
Deep proficiency with the Graph API — paging, batching, field expansion, debugging, rate limit handling — plus webhook subscriptions for real-time event delivery and signature verification.
We pick tools for the job — using established, well-supported technologies that our clients can rely on for years to come.
A repeatable, transparent engineering process refined over hundreds of projects.
We deeply understand goals, constraints, and integration points — then propose a clear architecture, tech stack, and project plan.
Two-week sprints with daily standups, weekly demos, and continuous integration. Clients see progress every step of the way.
Automated testing, manual QA, staging environment validation, and structured deployment with rollback plans and monitoring.
Every project we deliver follows secure development practices and respects the privacy & data-use policies of the platforms we build on.
Encryption at rest (AES-256) and in transit (TLS 1.3), secrets management (Vault/AWS SM), role-based access control, and OWASP Top 10 mitigations on every project.
Strict adherence to Meta Platform Terms, Data Use Policy, Developer Policies, App Review guidelines, WhatsApp Business Messaging Policy, and advertising standards.
Privacy-by-design across architecture decisions. We implement data subject access workflows, right-to-erasure, consent management, and data minimization patterns.
Every commit is peer-reviewed. Automated linting, type checks, unit/integration tests, dependency scanning, and security checks run on every pull request.
Multi-AZ deployments, auto-scaling, infrastructure-as-code (Terraform), disaster recovery planning, and 24/7 monitoring with on-call escalation paths.
All engineers and contractors sign NDAs and IP assignment agreements. Project data is segregated, access-controlled, and securely destroyed at project close.
If you're a developer or a technical buyer, you'll appreciate how we work — clear specs, clean code, real documentation, and engineers who actually understand the platforms.
Typed code, meaningful names, inline documentation where it helps. We deliver READMEs, architecture diagrams, and runbooks alongside the code.
OpenAPI / Swagger documentation for every backend we build — making integration straightforward for your team or downstream consumers.
We don't lock you in. At project close we hand over code, infrastructure access, documentation, and conduct walkthroughs so your team can own what we built.
Whether you have a defined integration requirement or want to explore what's possible — our engineering team is ready to scope your project.