Web, mobile, backend and QA

Production-ready software, delivered faster

Senior engineers who take products from idea to production, with AI built into how we work.

We design, build, test and ship web platforms and mobile apps, from the first line of code to production and the App Store and Google Play.

Start a ProjectExplore Services
Soulf delivery engineRunning
Product ideaYour roadmap, spec or business problem
Engineering teamSenior engineers own the plan and architecture
Parallel buildEngineers working with AI tooling
  • Web
  • Mobile
  • Backend
  • QA
ProductionLive on the web, the App Store and Google PlayShipped

Services

What We Build

Full-spectrum software delivery: web, mobile, backend and QA, all the way to production.

Frontend

Pixel-perfect, responsive and scalable interfaces built with modern frameworks.

  • React
  • Next.js
  • Astro
  • JavaScript

Backend

Scalable APIs, services and systems built across multiple technology ecosystems.

  • Node.js
  • Bun
  • Java
  • PHP
  • .NET

Mobile

iOS and Android apps delivered end to end, from the first build to release on the App Store and Google Play.

  • React Native
  • Swift
  • Kotlin
  • Flutter

Quality Assurance

Automated and manual testing designed to keep every release stable, reliable and production-ready.

  • Automated testing
  • Manual testing
  • Release validation

How Soulf is different

AI-Powered Delivery

Soulf doesn't use AI tools occasionally. AI agents are integrated directly into our engineering workflow and orchestrated alongside experienced software engineers, increasing development speed without sacrificing engineering quality.

Planning, frontend, backend, testing, code review and documentation agents work in parallel. All of their output goes through senior engineering review before it reaches production.
  • Planning Agent
  • Frontend Agent
  • Backend Agent
  • Testing Agent
  • Code Review Agent
  • Documentation Agent
Human checkpoint

Senior Engineering Review

Production
of AI agents operating at scale
Hundreds
software delivery, without shortcuts
Faster
tools and AI models available in the market
Best-in-class

Clients

Trusted where accuracy matters

We build core products for companies in payments and life sciences, where accuracy matters as much as speed.

Check21

Payments and receivables automation that deposits straight to your own bank.

We built several of Check21's products, including Payology Check Scanning, DocuSplit and its ACH and X9 payment processing, and moved its Core Service to microservices.

“Soulf felt like part of our team from the first week.”
Ido Meros, SVP, Check21.com
Read the case study

Life science company

Client name kept confidential.

“Working with Soulf is easy. They move fast, they deliver on time and the quality is always there. You can tell they care about doing the right thing for us and for the scientists who use our products. They don't just do what we ask. They come back with ideas to make things better, and they are honest when something needs more time. I would recommend them to any team.”

Team Leader, Life science company

How We Work

A clear path from brief to production

Four steps, the same on every engagement. You always know what is happening and who is accountable for it.

  1. Step 01

    Understand

    We understand the product, requirements, architecture and business objectives.

  2. Step 02

    Plan

    Senior engineers define the architecture, the technical approach and the delivery plan.

  3. Step 03

    Build

    Frontend, backend and QA work runs in parallel, in small increments you can review.

  4. Step 04

    Ship

    Everything is reviewed, tested and prepared for production delivery.

Engagement models

Two ways to work with Soulf

Bring us in to own a product end to end, or add senior capacity to the team you already have.

Full Product Team

For companies that need an engineering team capable of taking ownership of a complete product or major initiative.

  • End-to-end ownership, from discovery to launch
  • Web, mobile, backend and QA in a single team
  • Senior engineers accountable for quality
Build with Soulf

Engineering Firepower

For teams that already have engineers but need additional capacity to execute a sprint, feature or important deadline.

  • Works inside your repositories, tools and rituals
  • Extra capacity exactly where the roadmap needs it
  • The same review standards as your own team
Scale Your Team

Let's build something extraordinary.

Whether you need a full product team or additional engineering firepower for your next sprint, Soulf can help you move from idea to production faster.

Start a ProjectGet in Touch

Or email us directly at marcelo.mendes@soulfcompany.com