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Grischka G.GG

Grischka G.

Application Developer

€500/day
Bordeaux, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Grischka

👉 Looking for a reliable, passionate developer who can adapt to your world, your product… as well as your users?

Your passions shape your character, your strengths, your skills.

My passion? Sled dogs 🐺... Traversing snowy forests, guiding a team of 6 to 12 dogs eager for speed, in -20°C.

What I learn from it? Coordination. Listening. Instinct. Resilience. And the importance of trust – in oneself and in the team 💪.

On a daily basis, I thrive in React, NestJS, or AWS environments. But the spirit remains the same: moving forward together, facing obstacles, achieving the goal!

🛠️ What I do today:
– Fluid and accessible interfaces (React, Tailwind, Shadcn)
– Secure authentication (Keycloak), subscriptions (Stripe), storage (MinIO)
– Robust APIs (NestJS, PostgreSQL, GraphQL)
– Deployment and management of cloud services with AWS (S3, Lambda, Amplify…)

📚 What I did before (and what makes me strong):
– Functional writing, scoping, testing (Business Analysis – Crédit Agricole)
– Customer relations in an international context (ASOS, Bell, SITA)
– Communication, document management, ERP (Savéol)

🎯 What sets me apart:
– A true product culture: I think about usage, not just technology
– Field resilience, acquired far beyond coding
– A love for a job well done, fueled by curiosity… and a bit of canicross 🐾

💬 An ambitious project? A concrete need? Let's discuss it together and build something great together!
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Amiltone Bordeaux
    Full-stack Developer
    DIGITAL AND IT
    October 2023 - Today (2 years and 10 months)
    Bordeaux, France
    October 2024 - Present
    Full-Stack Developer for the relaunch of cliquezpostez.com, a remote mail sending service.

    💻 Front-end:
    ✔️ Graphic Redesign: Using React, TypeScript, Tailwind.

    🗄️ Back-end:
    ✔️ La Poste API Integration: Sending LREL-AR letters.
    ✔️ SMS: Sending reception confirmation SMS.
    ✔️ Creation of testing environments and Amplify applications.
    ✔️ Creation of APIs and webhooks.
    ✔️ Migration and connection to the new printing center.
    ✔️ Use of serverless Lambda.

    📦 DevOps:
    ✔️ Amplify deployment build, automated environment variables.
    ✔️ Deployment and debugging via CloudFormation and CloudFormation template files.

    ----------

    October 2025 - October 2024
    Full-Stack Developer on the Flotto project, an automotive fleet management application 🚗 for SMEs.

    💻 Front-end:
    ✔️ Accessibility Improvement: Using React, Tailwind, and ShadCn to enhance user interface accessibility.

    🗄️ Back-end:
    ✔️ Document Management: Implementing a user document management solution with Minio.
    ✔️ Registration Flow: Keycloak for sending registration confirmation emails, password resets... Custom theme and template creation. Deployment on the dedicated server.
    ✔️ Paywall and Subscriptions: Integrating Stripe, managing subscriptions with trial periods and payments.
    ✔️ REST API: CRUD operations and ticket resolution on Nest.js, bug fixes, performance optimizations, functional improvements.

    📦 DevOps:
    ✔️ Dockerization: Updating and maintaining Docker containers.
    ✔️ API Gateway POC: Migrating Kong ➡️ Apisix, configuring Docker containers.

    🧪 Testing:
    ✅ Writing and executing unit tests with Jest.js.

    🔬 Other:
    ✅ Code Review: Code quality and adherence to best practices (DOD, Commit trailer...).
    ✅ Hackathon & Pentesting: Preparing for a pentesting hackathon.
    AWS Front-End Development Back-End Development Typescript Docker
  • Consoneo
    Web Developer
    ENERGY AND UTILITIES
    September 2022 - October 2023 (1 year and 1 month)
    Bordeaux, France
    Redesign of the Design System, UX/UI improvements, and deployment of Fullstack POCs.

    💻 Front-end:
    ✔️ Design System Redesign: Redefining and improving the Design System with React, JavaScript, and Storybook to ensure visual consistency across different components.
    ✔️ UX/UI Redesign: Improving an internal application, integrating new design system components.

    🧪 Testing:
    ✔️ Testing: Writing and executing unit tests using Jest.js.

    📦 DevOps:
    ✔️ Dockerization: Implementing containerization solutions with Docker to simplify POC deployment.

    🔬 Other:
    ✔️ POC Nest.js / Next.js / PHP / Symfony / MySQL / PostgreSQL: Developing fullstack POCs using various technologies.
    Front-End Development DevOps TDD Testing Test Automation
  • Wild Code School
    Full-stack Developer
    EDUCATION AND E-LEARNING
    October 2022 - September 2023 (11 months)
    Bordeaux, France
    Full-Stack Developer on the Mapado project, a web and mobile application for discovering points of interest in the city 🗺️.

    💻 Front-end (Web & Mobile):
    ✔️ Development of responsive and interactive interfaces with React, React Native (Expo), and TypeScript.
    ✔️ Use of Apollo Client and GraphQL for client-side data management.
    ✔️ Implementation of navigation with React Router (web) and React Navigation (mobile).
    ✔️ Creation of mockups and interactive prototypes with Figma.
    ✔️ Integration of UI libraries (Material UI, Framer Motion, Leaflet for interactive maps).

    🗄️ Back-end:
    ✔️ Design of a GraphQL API with Node.js, Express, Apollo Server, and TypeGraphQL.
    ✔️ Management of complex entities and relationships with TypeORM and PostgreSQL.
    ✔️ API security (via @Authorized, password hashing with Argon2).
    ✔️ Integration of external APIs (geolocation, city photos) to enrich data.

    📦 DevOps & Deployment:
    ✔️ Complete Dockerization of services (front, back, tests, database) and orchestration with Docker Compose.
    ✔️ Implementation of a Continuous Integration (CI) pipeline with GitHub Actions.
    ✔️ Automated deployment on VPS with Nginx (reverse proxy), Caddy (SSL certificates), deployment scripts, and DockerHub webhooks for continuous deployment (staging/production).

    🧪 Testing & Quality:
    ✔️ Writing and executing unit tests (Jest), integration, and end-to-end tests (Playwright).
    ✔️ Use of mocks and isolated environments for robust testing.

    🔒 Security:
    ✔️ Securing server access (SSH, fail2ban, custom ports).
    ✔️ Protection against XSS, CSRF, SQL injection attacks (parameterized queries, CORS, SameSite cookies).

    🔄 Methodology & Collaboration:
    ✔️ Team project management (Agile Scrum method, backlog, sprints...).
    Front-End Development Back-End Development User Experience Design React Native GraphQL

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Education

  • Application Developer
    WCS
    2022
  • Web & Mobile Web Developer
    WCS
    2021

Skill set

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