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API Engineering

API Engineering
Service PostgreSQL • Laravel • GraphQL

API Engineering

High-performance REST & GraphQL APIs, solid database design, and secure third-party payment & telemetry integrations (Stripe, Twilio, OpenAI).

  • REST
  • GraphQL
  • OAuth2
  • PostgreSQL

APIs are the product surface for every client you will ever ship. I design them for clarity, speed, and safe evolution — not just “it returns JSON.”

Problem

Fragile backends show up as:

  • Undocumented endpoints that only one engineer understands
  • N+1 queries and slow list views under real traffic
  • Payment or SMS integrations bolted on without idempotency
  • Auth that is either too open or impossible to extend

Solution

I deliver API layers that stay maintainable:

  • REST or GraphQL — pick the shape that fits your clients
  • Auth & RBAC — OAuth2 / Sanctum-style tokens with clear roles
  • Integrations — Stripe, Twilio, OpenAI, and custom webhooks with retries
  • Data design — indexes, migrations, and query patterns that scale

What you get

OpenAPI or GraphQL schema docs, predictable error shapes, and an architecture your next hire can extend without rewriting the first release.

Services Include:

  • High-Throughput REST & GraphQL Gateways
  • Sub-Second Telemetry & Billing Integration
  • OAuth2 & Role-Based Access Security

Explore more

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Ready when you are

Got a Dream Project? Let's Create It Together!

Share the goal, timeline, and stack — I reply within 24 hours. Prefer a call first? Book a short discovery session.

Build an API Let's Talk

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You have different questions? Ask Yassine!

Reach Me
What types of companies do you work with?

B2B SaaS, e-commerce, and startups building custom web apps, MVPs, and internal tools.

How long does it take to build a custom application?

An MVP is typically 4 to 8 weeks. Larger products can take 3 to 6 months of continuous development.

Can you integrate with our existing tools?

Yes. CRMs, payment gateways, marketing platforms, and internal databases — via custom APIs.

Do you offer consultations or ongoing support?

Both. One-time reviews, and retainers for maintenance, performance, and new features.

What does onboarding look like?

A discovery call, then technical planning and scope — before the first line of code.