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Nancy Emmanuel KongoNE

Nancy Emmanuel Kongo

Full Stack Web Developer, Mobile, DevOps

€240/day
Chelles, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Nancy Emmanuel

Fullstack web & mobile developer — I transform your idea into a delivered, live, and used product.

You need a **website**, a **mobile application**, an **e-commerce store**, or a custom business platform? I will guide you from idea to deployment: scoping, design, development, go-live, and maintenance. You will get a product that actually works — not a dormant mockup.



**What I can concretely deliver for you**:


  • Fast and polished websites & landing pages (Next.js, React)
  • iOS & Android mobile applications (Flutter, React Native) published on the stores
  • E-commerce stores & PrestaShop modules (multi-store, payments, CRM)
  • SaaS platforms & business applications (dashboards, client areas, back-offices)
  • Robust APIs & integrations (Payment, WhatsApp, SMS, third-party services)
  • Deployment, servers & containerization (Docker, CI/CD)

What sets me apart**: Co-founder of two tech startups, I approach your project with a true **product mindset**, not just code. I master the entire chain (backend, frontend, mobile, infrastructure): you avoid coordinating multiple providers. And I pay special attention to **qualityand **documentation**, so that your project remains maintainable and truly belongs to you.



**Stack**: TypeScript, Next.js, React, NestJS, Symfony, Node.js, Flutter, React Native, PostgreSQL, Docker.



**Types of missions**: MVP creation, redesign, feature addition, existing project takeover, technical support.


Let's talk about your project — I'll respond quickly with a clear proposal.
  • French

    Native or bilingual

  • English

    Basic

Remote only
Primarily works remotely

Experience

  • Webtinix
    Fullstack Developer — Web, Mobile & DevOps
    TECH
    February 2022 - Today (4 years and 5 months)
    Brazzaville, Republic of the Congo
    Fullstack & DevOps developer at Webtinix, I am involved from design to go-live on various client projects: Healthcare, GED, education, finance, e-commerce, and public sector.

    Multi-app Business Platforms
    Design and deployment of complete systems: SIS, a hospital information system (Symfony backend + several Next.js frontends dedicated by role — doctor, patient, admin, emergencies); Bomba-Doc, a GED in microservices (Symfony · Next.js · Python service for OCR and scanner management); Eduverse (school management).

    Backend, SaaS & Real-time
    SaaS backend in production — Khazad (khazad.fr) and Webard / SMEO (Symfony 5.4). Development of MDM Platform, an Android tablet fleet management platform (kiosk mode, remote commands, real-time screen streaming) with a native Kotlin agent, Fastify backend, and React dashboard.

    Mobile & Web
    Manager of the FakoDrop mobile application (Flutter), deployed in Ivory Coast and published on the Play Store & App Store; WordPress sites with custom plugins; PrestaShop modules (multi-store, Dialogue Insight CRM connector).

    Infrastructure, DevOps & Automation
    Setup and administration of a containerized self-hosted infrastructure (Docker + Traefik): Nextcloud, Vaultwarden, mail server, Dolibarr, OpenProject. Automation hub (Fastify + n8n) for scheduling and content publishing.

    Cross-functional
    Cross-platform Design System (Sodinix, web + mobile); mentoring developers and interns; design and delivery of an internal masterclass on the controlled use of AI in development.
    Next.js Flutter Back-End Development Front-End Development
  • Kongosoft
    Web & Mobile Developer
    June 2021 - July 2021 (1 month)
    Brazzaville, Republic of the Congo
    Development of a prototype for the mobile version of the Kelasi application, a complete school management platform with parent and student accounts.
    Flutter External API Integration
  • MOBEMBO
    Co-founder & Lead Developer
    TRANSPORTATION
    January 2024 - Today (2 years and 6 months)
    Republic of the Congo
    Co-founder & lead developer of Mobembo, a TravelTech platform that digitizes the booking and payment of intercity transport tickets — bus, train, and plane — in Central Africa.

    Role & Vision
    Co-founder: I drive the product vision and technical architecture, from design to go-live and maintenance.

    Architecture
    Monorepo (Turborepo + Bun): NestJS API (PostgreSQL / Prisma), React Native / Expo mobile applications, and Next.js web dashboards, with shared types and API clients across all apps.

    Multi-app Ecosystem
    Passenger application (multi-transport search, booking, payment, digital tickets); boarding agent application (QR scan, ticket validation); partner portals for companies; administration console; showcase website.

    Technical Challenges
    Mobile Money payment integration, journey, schedule, and availability management, verifiable digital tickets, and a smooth experience even with unstable connections.
    React Native Next.js DevOps NestJs Monorepo

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Education

  • Flutter Bloc Riverpod
  • Institute of Professional Sciences and Techniques (ISTP)
    2021

Skill set

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