Open to freelance & full-time roles

Hippolyte Kengni

Full-Stack Developer

I build web products end to end — Laravel and React applications backed by automated test suites that catch regressions before users do.

Portrait of Hippolyte Kengni
Years in software
8+
Regression time cut
−50%
BI reports delivered
50+
Certifications earned
12

About

Developer and QA engineer — I ship features and the tests that keep them working.

Over the last eight years I have moved between two sides of the same craft: building web applications, and proving they work. Today I develop Laravel and Django back ends, React and Livewire front ends, and the Selenium, Cypress and Pytest suites that run against them in CI.

That mix is deliberate. Leading QA at DTN Software Solution taught me where software breaks; building production platforms at CNRS taught me why. I hold a Master's in Web & Data Engineering, and most of what I use daily came from shipping, reading and certifying along the way.

Location
France · open to remote
Experience
8+ years
Education
MSc Web & Data Engineering
Languages
French (native) · English (B2)
Availability
Freelance & permanent

Skills

Back end

  • PHP
  • Laravel
  • Livewire
  • Python
  • Django & DRF
  • FastAPI
  • REST APIs
  • MySQL
  • PostgreSQL

Front end

  • JavaScript
  • TypeScript
  • React
  • Vite
  • Alpine.js
  • Tailwind CSS
  • HTML & CSS
  • PWA

Test automation

  • Selenium
  • Cypress
  • Playwright
  • Pytest
  • PHPUnit & Pest
  • Jest
  • NUnit & RestSharp
  • Cucumber / Gherkin
  • Postman

Delivery

  • Git & GitHub
  • GitHub Actions
  • Jenkins
  • Docker
  • CI/CD
  • Linux
  • Agile / Scrum
  • Jira

Experience

  1. 2021 — Present · Paris, France

    Research Technician, Full-Stack Developer · CNRS

    • Built secure REST back ends with Django REST Framework and PostgreSQL, documented and covered by Pytest.
    • Shipped custom WordPress and Laravel solutions for 10+ research teams.
    • Set up CI/CD pipelines and automated test gates on every merge.
  2. 2021 · Safran Nacelles

    BI Developer, Purchasing Data Analyst · Safran

    • Delivered 50+ Power BI reports on SAP, SSAS and SSIS data sources.
    • Automated nightly SAP extraction with Python and SSIS, removing manual data pulls.
    • Deployed dashboards with row-level security via Power BI Report Server.
  3. 2020 · IMSIC Lab

    Data Analyst · Port-Cros National Park

    • Categorised 5 000+ external backlinks with Python and NLP anchor-text analysis.
    • Modelled and visualised the link network in Gephi, shipped a Streamlit dashboard.
  4. 2018 — 2021 · DTN Software Solution

    QA Lead & Project Manager · DTN

    • Introduced Selenium regression suites that cut regression testing time by 50%.
    • Wired API and UI tests into Jenkins pipelines with Postman collections.
    • Led a QA team across Agile squads and owned stakeholder reporting.
  5. 2014 — 2018 · Specno

    Python Web Developer · Specno

    • Built and maintained the company site plus 50+ campaign pages in Django, deployed on Heroku.
    • Automated customer engagement with Messenger chatbots, lifting conversions by 20%.
    • Replaced manual reporting with scrapers and Plotly dashboards, saving 5 hours a week.

Education

  1. 2019 — 2021

    MSc Web & Data Engineering · Université de Toulon

    • Web applications combined with data collection, cleaning and visualisation in Python and SQL.
    • Machine learning for web products: regression, classification and clustering on large datasets.
    • Distributed data tooling — BigQuery, AWS, Hadoop, Spark, Hive.
  2. 2020 — 2021

    Intelligent Systems & Multimedia · VNU Hanoi

    • Text mining and sentiment analysis; authored a research paper on automated text classification.
    • Object-oriented Java and C++ projects with unit tests in Agile teams.
  3. Diploma

    Computer Software Engineering · IAI Cameroon

    • System modelling with UML and Merise; compiler construction and web semantics.
    • Desktop and web application development, plus Linux system administration.

Projects

A selection of production platforms and test frameworks. Client work lives in private repositories — happy to walk through the code on a call.

Kenako

2026

Five role-based apps, one design system

Multi-restaurant SaaS where each venue gets its own storefront under a shared brand. Separate customer, restaurateur, superadmin and courier apps, each with its own hash router so every screen is shareable by URL.

  • JavaScript
  • ES modules
  • CSS
  • Design system
  • No build step

LeGuide Informatique

2026

Bilingual storefront, Filament back office

E-commerce for a computer-hardware retailer in Yaoundé: availability per store, guest checkout paid in cash on pickup or ordered over WhatsApp, and an admin covering stock, orders, after-sales and content.

  • Laravel 13
  • Livewire 4
  • Filament 5
  • Tailwind 4
  • Pest
  • Playwright

Croké

2026

Storefront plus a full workshop back office

E-commerce platform for an artisan food brand selling by volume: public responsive site, and an admin that drives orders, production, stock, deliveries and content.

  • Laravel 12
  • PHP 8.3
  • Livewire 3
  • Alpine.js
  • Tailwind CSS
  • MySQL

Stocky

2026

Inventory, POS, storefront and customer portal

Stock, purchasing and sales management with a point of sale, an online shop and a customer portal on top. OAuth2 API authentication, PDF invoices and Excel exports.

  • Laravel 12
  • Vue 3
  • Passport OAuth2
  • MySQL
  • DomPDF

Adeco Restaurant FoodPark

2025 — 2026

430+ commits over two years

Restaurant management platform covering menus, orders, table bookings, coupons and reviews, with real-time notifications and a PHPUnit feature-test suite.

  • Laravel 11
  • Pusher
  • Stripe & PayPal
  • Tailwind CSS
  • PHPUnit

Jose's Cuisine PWA

2026

Installable, offline-capable, zero backend

Mobile-first progressive web app for a home catering business. Content is JSON-driven, every journey ends in a prefilled WhatsApp order, and each push deploys through GitHub Actions.

  • React
  • Vite
  • TypeScript
  • PWA
  • GitHub Actions

Cypress E2E Framework

2025

Tag-filtered suites across four environments

End-to-end automation framework written in TypeScript with Cucumber scenarios, tag-based test selection, per-environment configuration and headless CI execution.

  • Cypress
  • TypeScript
  • Cucumber / Gherkin
  • CI/CD

Java Selenium Framework

2025

Page Object Model, built to reuse

Maven-based Selenium WebDriver framework with a reusable driver factory, page objects and reporting — the foundation behind the regression suites that halved testing time.

  • Java
  • Selenium
  • Maven
  • TestNG

Certifications

Twelve credentials from GitHub, Microsoft, Google, Cisco, IBM and the Linux Foundation.

GitHub

GitHub Foundations

Core Git and GitHub workflows: collaboration, project management and platform administration.

OpenEDG Python Institute

PCEP — Entry-Level Python Programmer

Python syntax, data types, control flow and standard library fundamentals.

Cisco · OpenEDG

Python Essentials 2

Intermediate Python: modules, OOP, exceptions and file processing.

Microsoft

Azure Fundamentals (AZ-900)

Cloud concepts, core Azure services, pricing and governance.

Microsoft

Azure AI Fundamentals (AI-900)

Machine learning and AI workload principles on Azure.

Microsoft

Azure Data Fundamentals (DP-900)

Relational and non-relational data concepts and Azure data services.

Google · Coursera

Google Project Management

Six-course programme covering initiation, planning and delivery of traditional and Agile projects.

IBM · Coursera

Data Science Professional

End-to-end data science in Python: modelling, evaluation and pipeline delivery.

IBM · Coursera

Data Analyst Professional

Data cleaning and analysis with Pandas, NumPy, SQL and Cognos dashboards.

IBM · Coursera

Advanced Data Science

Applied machine learning and analysis on real-world problem sets.

Linux Foundation · Coursera

Open Source, Linux & Git

Open-source development practices, Linux tooling and Git workflows.

Cisco Networking Academy

English for IT 2

Technical English at CEFR B2 level for engineering teams.

Contact

Hiring, freelance work or a technical question — I reply within 48 hours.