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Fona

Industry

Software and SaaS

Product teams that need their software to talk to half a dozen external providers without that eating the roadmap. We bring the integration and infrastructure work so the in-house team can focus on the product.

Let's talkSee case studies
Abstract diagram of a central node connected to several external systems, representing third-party API integrations

The problem

Every third-party integration is a project nobody budgeted for

Payments, billing, CRM, communications, authentication: each external provider brings its own API, its own webhooks and its own silent failures. The product team ends up maintaining integrations instead of building product.

Signs this is you

  • The roadmap stalls to integrate a payments provider, CRM or communications API
  • Every third-party webhook is handled with a different patch
  • Multi-tenant architecture was decided on the fly and is now expensive to change
  • An external provider changes its API without notice and something breaks in production
  • Nobody knows what happens if a webhook fails at midnight
  • No engineering capacity for a specific push without a full-time hire

What we do

What we do in this industry

Third-party API integrations

Payments, billing, CRM, communications and authentication. With proper webhook handling, retries and idempotency, so a provider failure never turns into lost data.

Multi-tenant architecture

Per-customer data isolation, per-instance configuration and a model that scales without a rewrite every time a big new account lands.

Engineering reinforcement

Extra capacity embedded in your team, working to your conventions, for a specific development push — without the friction of a full-time hire.

Point-in-time architecture calls

When it is time to decide how to scale without giving up delivery speed: database, queues, the limits of the current platform, and what to build versus what to buy.

14+ yrs
building software in production
Multi-tenant
architecture proven on real platforms
2-4 wks
to have the integration map

How we do it

How we join a SaaS project

  1. Integration map

    We review which external providers are involved, which webhooks come in, and where the silent failure points sit today.

    DeliverableIntegration and risk map

  2. Pilot integration

    The integration that hurts the most, built end to end with monitoring and retries, to validate the approach before committing to the rest.

    DeliverableFirst integration in production

  3. Reinforcement by sprint

    We join your delivery cycle for the remaining integrations or features, prioritised together with the product team.

    DeliverableDelivery inside your sprint

  4. Handover

    Documentation of every integration and architecture decision, so the in-house team can maintain them without depending on us.

    DeliverableDocumentation and handover

Technologies

  • Node.js
  • Laravel
  • Vue.js
  • Nuxt
  • PostgreSQL
  • REST / Webhooks
  • Payment gateways
  • Docker
  • AWS

FAQ

What people ask us

Can you join our sprint as one more engineer?

Yes, that is the usual way of working in this industry: your conventions, your repository and your board, with whatever reinforcement you need.

Do you work with any payments or CRM provider?

Yes, as long as it exposes an API or webhooks, which is the norm. In the integration map we check what each one actually allows and design around its real limits.

Can you handle just one specific integration, not the whole product?

Yes. It is a common request: come in for an integration that has turned into a problem, fix it properly and leave it documented, without touching the rest of the product.

Next step

Half an hour well spent

Walk us through the problem on a short call. You leave with a first read on how we'd approach it and what it would involve — no commitment, no sales deck.

Let's talkHow we work