You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Sèmèvo SalakoSS

Sèmèvo Salako

Backend & Data Engineer | Java, PHP, Power BI

€400/day
Rennes, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Sèmèvo

🚀 Robust architectures serving your data.

Backend Developer with a hybrid profile, I combine technical expertise and Business Intelligence. I don't just code: I build robust architectures and resilient APIs that transform your data into real decision-making levers.

I work across the entire value chain of your applications and data:

  • - Backend & API Architecture: Design and development of secure and scalable REST APIs (Java Spring Boot, Symfony, Laravel).
  • - Data Engineering: Creation and optimization of ETL/ELT flows (Talend, Advanced SQL) to ensure data reliability.
  • - Business Intelligence: Implementation of interactive dashboards (Power BI, SAP BI) for strategic management.
  • - Optimization: Audit of SQL queries and automation of business processes.

My dual expertise allows me to understand the business challenges behind the code. I design my databases (Snowflake, Oracle) and my flows with performance and maintainability in mind from the outset, avoiding future technical debt.

Examples of achievements:
  • -Groupe Avril:Development of connected solutions combining BI and Backend to ensure the reliability of critical reporting.
  • -Architecture:Design of complex Restful APIs and containerization of environments (Docker).
  • -Data Viz:Creation of management dashboards connected to production databases.

I adapt to the demanding environments of large groups (Industry, Services) as well as agile structures.

🛠 Technical Stack:

  • -Backend:Java (Spring Boot), PHP (Symfony, Laravel), Python, C#.

  • -Data & DB:SQL (Oracle, MySQL, Postgres), NoSQL (MongoDB, Neo4j), Snowflake.
  • -BI & ETL:Power BI, SAP BI, Talend, SSIS.
  • -DevOps & Cloud:Docker, Azure, GCP, Git.

📩Have a project in mind?Contact me to discuss it.
  • French

    Native or bilingual

  • English

    Conversational

  • German

    Basic

Remote only
Primarily works remotely

Experience

  • AS PHARM GROUP
    Data & Decision Support Tools Developer
    April 2025 - July 2025 (3 months)
    Paris, France
    • • Design of an HR application integrating performance indicators (KPIs) and partial automation of data processing via SQL.
    • • Consolidation and integration of multi-source data into Power BI for internal management.
    • • Analysis of business needs and presentation of insights to operational managers.
  • AVRIL SERVICES
    BI Analyst & Data Engineering
    April 2024 - July 2024 (3 months)
    Saint-Gérand, France
    • • Maintenance and evolution of data warehouses in a decision support environment.
    • • Development of Power BI dashboards and SAP BO BI4 reports for various business units.
    • • Proof of Concept (PoC) realization, functional support, and ticket monitoring in collaboration with Data teams.
  • TEC-SARL AFRIQUE
    IT Operations Technician
    DIGITAL AND IT
    September 2022 - May 2023 (8 months)
    Cotonou, LI, Benin
    I worked on several projects with Laravel and Vue JS. I integrated a local payment method self-taught.

    I was also in charge of leading a team of 3 people, including myself.
    Laravel Developer Laravel Vue.js Payment Gateway Integration Project Management Scrum Agile Method

Recommendations

Be the first to recommend Sèmèvo

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Bachelor's Degree, Information Technology Methods Applied to Business Management
    University of Rennes
    2023
    Licence, Méthodes Informatique Appliquées à la Gestion des Entreprises
  • Professional Bachelor's Degree, Computer Systems and Software
    Pigier
    2022
    Licence Professionnelle, Système informatique et Logiciel

Certifications

Skill set (19)

Categories