Full Stack Engineer / Developer

On an application project, the difficulties rarely lie inside one technical layer: they appear where layers meet. An interface expecting data in a format the server does not produce, a query that collapses when the table passes a hundred thousand rows, a deployment that breaks what worked locally. The full stack developer is precisely the person who holds these junctions together, because they design the interface knowing the server's constraints, and the database knowing how it will be queried.

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How we work

What we do

This profile works on projects with real business logic: user accounts, access rights, automated processing, connections to external systems. They take charge of the technical architecture and make sure that early choices do not become dead ends as the application grows.

  1. 1

    Architecture design

    Choice of technologies, database modelling and breakdown into modules before any development.

  2. 2

    Building the foundations

    Authentication, access rights and data structure set up: the foundations for everything else.

  3. 3

    Feature development

    Screens and processing built in functional batches, with regular demos.

  4. 4

    Integration and testing

    Connection to external services, edge case testing and performance checks under realistic load.

  5. 5

    Deployment and monitoring

    Automated go-live, backups, logging and alerts if anything goes wrong.

Tools

Tech stack & tools

The technologies and platforms we use for this type of assignment.

  • React
  • Node.js
  • PHP
  • MySQL
  • REST API
  • Docker
  • Git

Methodology

Architecture approved before development, breakdown into independent modules and automated deployment. Structural decisions are made early, while they are still cheap.

Deliverables

What's included

A detailed list of what you receive at the end of the assignment.

  • Documented technical architecture
  • Database modelling
  • Front-end and back-end development
  • Documented REST API
  • Authentication and rights management
  • Edge case and load testing
  • Automated deployment and backups
  • Complete technical documentation

Indicative timeline: 8 to 16 weeks for a complete application, depending on scope

Skills

Training & certifications

The core skills and continuous learning behind this area of expertise.

  • Modern JavaScript practices and the React ecosystem
  • Back-end architecture, REST API design and data modelling
  • Application security best practices following OWASP guidelines
  • Containerisation, continuous integration and deployment automation
  • Constant monitoring of performance and database optimisation
Expertise

Experience & expertise

The kinds of assignments this expertise covers day to day.

  • Complete business applications: case tracking, client portals, dashboards
  • Design of APIs used by websites and mobile apps
  • Takeover of existing projects with architecture upgrades
  • Setup of continuous integration and deployment pipelines
Our commitments

Why choose us

No grey area between specialists

One person responsible for the whole chain: no problem is left without an owner.

Choices that stand the test of time

The architecture is designed for the expected growth, not just for the launch version.

Automated deployment

Releases are repeatable and reversible, with no risky manual steps.

Handover possible at any time

Documentation and well-structured code allow another team to take over the project.

Pricing

Our packages

Indicative prices, adjusted after we discuss your project.

One-off assignment

from €650

Technical reinforcement

  • Targeted intervention
  • Audit or fix
  • Quote per task
  • Technical report
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Ongoing support

from €1,200 / month

Outsourced technical team

  • Monthly hours allowance
  • Continuous improvements
  • Monitoring and maintenance
  • Priority availability
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All our prices are indicative. Contact us for a free personalised quote.

Go further

Related services

The services this expertise is most often involved in.

Web application development

Custom web tools tailored to the specific needs of your business.

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Mobile app development

Your business in your customers' pocket, on iOS and Android.

Learn more

Process automation

Automate your repetitive tasks and focus on what matters.

Learn more
Frequently asked questions

Expertise FAQ

It means having a complete view of the chain. On very large projects, specialists are still needed; on projects for small businesses and SMEs, full stack avoids the cost of coordinating several people.

React and JavaScript for the interface, PHP or Node.js on the server, MySQL for data. The choice depends on your context and hosting constraints, not on personal preference.

Yes, after an audit of the code and architecture. We will tell you honestly whether taking it over is viable or whether a partial rewrite would be more economical.

Through testing at realistic volumes before going live, and an architecture that allows resources to be added without rewriting everything.

Yes, that is planned for: documentation, structured code and knowledge transfer are part of the delivery.

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