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Houssem GharsalliHG

Houssem Gharsalli

Senior full stack & Data Platform Engineer

€700/day
Zurich, CH
8-15 years

Average response time: 1 hour

About Houssem

I build scalable data‑driven SaaS and B2B products using Python (FastAPI, Django), React/Next.js and Azure. With 8+ years’ experience at Nestlé, Credit Suisse and start‑ups, I’ve delivered high‑performance platforms and dashboards that drive growth and efficiency.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Spanish

    Conversational

Can work on-site
Zurich (up to 50km)

Experience

  • Nestlé,
    Software Developer (Data & Cloud Solutions)
    DIGITAL AND IT
    March 2025 - Today (1 year and 3 months)
    Lausanne, VD, Switzerland
    and accomplishments:
    • Designed and deployed applications on Azure Cloud, ensuring scalability, reliability, and performance.
    • Implemented Cosmos DB as the main database solution, setting up collections, partitioning strategies, and optimizing queries for large-scale data processing.
    • Built secure connections and services using Azure networking and identity management features.
    • Collaborated with cross-functional teams to integrate cloud applications with existing Nestlé infrastructure.
    • Developed custom components with Plotly Dash and Python, enhancing internal dashboards with interactive visualizations.
    • Ensured clean code architecture, separating concerns through service-oriented modules (database services, API services, UI components).
    • Actively contributed to team communication and documentation, facilitating smooth knowledge transfer across international teams.
    Tech stack: Python, Plotly Dash, Cosmos DB, Azure (App Services, Networking, Storage), JavaScript
    Python Microsoft Azure CosmosDB Plotly dash React.js
  • Aseda Science,
    fullstack developer
    DIGITAL AND IT
    April 2023 - March 2025 (1 year and 11 months)
    Zürich, Switzerland
    • Implement new component using react.tsx (typescript)
    • Refactor the existing Frontend and Backend code
    • Create and deliver a stable and reliable GUI that meets the design goals and delivers on customer expectations for functionality, reliability and performance
    • Develop new API with FastApi
    • Develop script to run in one command all the backend by checking the packages installed for R and python
    • Work as a team with the QA SW engineer to ensure the Quality Assurance process for code review, testing and release is effectively implemented
    • Offer mentorship sessions to junior developers, guiding them on best practices in Python programming and development methodologies.
    • Use best practices and software design from conception to implementation.
    • Data Upload:
    ◦ Developed functionality to upload data into the analytics platform.
    ◦ Implemented processes to handle various data formats and structures.
    ◦ Ensured seamless integration with the MongoDB database for efficient data storage.
    • Data Matching:
    ◦ Implemented a data matching system to handle variations in column names within MongoDB.
    ◦ Utilized matching algorithms to identify and align similar columns across datasets.
    ◦ Ensured data consistency and integrity for downstream analytics processes.
    • Platform Analysis Features:
    ◦ Created a platform for data analysis with user-friendly features.
    ◦ Implemented functionalities for data display, allowing users to visualize datasets.
    ◦ Developed data filtering capabilities to refine datasets based on user-defined criteria.
    ◦ Implemented data grouping functionalities to organize and aggregate data for analysis.
    ◦ Integrated data visualization tools for generating insightful charts and graphs.
    • Favorites and User Journey:
    ◦ Designed and implemented a feature to save user preferences and workflows.
    ◦ Developed a mechanism to store and retrieve user journeys for seamless navigation.
    React.ts MongoDB Redis AWS Python fastapi
  • Eturnity,
    Backend developer
    August 2023 - June 2024 (11 months)
    Saint Gallen, Switzerland
    Responsibilities and accomplishments:
    • Backend Development with Django:
    ◦ Developed robust backend APIs using Django framework.
    ◦ Implemented new filtering logic to save and retrieve user filters.
    ◦ Created comprehensive backend logic for filtering, including classes, serializers, views, and models.
    • User Modification Handling:
    ◦ Implemented user modification tracking using Django signal API.
    • Testing and Documentation:
    ◦ Conducted thorough testing with pytest, including unit, integration, and end-to-end tests.
    ◦ Documented backend code, APIs, and system architecture for clear guidelines.
    • Infrastructure Setup and Code Optimization:
    ◦ Configured Celery and Redis for PDF creation and CSV export functionalities.
    ◦ Collaborated with cross-functional teams for efficient development processes.
    ◦ Conduct performance analysis
    ◦ Implement Butterstack for logging, enhancing system monitoring and troubleshooting capabilities.
    • Collaboration:
    ◦ I collaborate with cross-functional teams, including frontend developers, designers, and project managers, to ensure a cohesive and efficient development process.
    ◦ I actively participate in code reviews, providing constructive feedback to peers and incorporating valuable insights to maintain code quality and adherence to coding standards.
    ◦ Document best practices, coding standards, and architectural guidelines for Python development.
    Tech stack: Django, Celery, Redis PostgreSQL, Pytest, Gitlab, CI/CD
    Django CI/CD Python Celery and redis API

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Education

  • Engineer generalist
    ESTIA
    2016
    Engineer generalist
  • Double degree
    University of Bilbao
    2016
    Double degree

Skill set

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