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

Laurent S.

Software Engineer | Java•Kafka | Payment Expert

€650/day
Grenoble, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Laurent

Senior software engineer and lead developer with over 15 years of experience in enterprise software development and solution architecture. I have been running my own consulting company since 2012, specializing in payment systems, security solutions, and embedded software development.

🔧 TECHNICAL EXPERTISE
Java • Go (Golang) • Spring Framework • Microservices Architecture • Kubernetes • Apache Kafka • Payment Systems • Security Solutions • Embedded Systems • IoT Development

💼 KEY ACHIEVEMENTS
- Design and development of payment systems using modern technologies
- Creation of IoT solutions for real-time telemetry data collection from vending machines
- Integration of automated payment solutions for major Austrian e-commerce platforms
- Securing and hardening payment infrastructure for e-cotiz (BPCE - second largest cooperative bank worldwide)
- Development of embedded software for car-sharing systems deployed in Canada, Germany, and France
- Creation of "digital DNA" authentication solutions for high-security industries including nuclear waste management and Swiss banking
- Design of social network services integrated into SIM cards, presented at Mobile World Congress SIMagine

🎯 SPECIALIZATIONS
Payment Processing • Financial Technologies • Secure Architecture • Embedded Systems • IoT Solutions • Microservices • DevOps • Technical Leadership

Available for consulting, development projects, and technical leadership roles.
  • German

    Conversational

  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Grenoble (up to 20km)

Experience

  • CCO
    Project manager, architect and developer
    November 2023 - Today (2 years and 7 months)
    I took over the project that I had previously conceived as a Tech Lead/Architect from 2019 with Cards&Systems, which is now bankrupt. My company is now operating the Maintenance, Development (Backend, Frontend) and DevOps side of the project.
    Back-End Development Java DevOps Tech Lead Software Architecture
  • Cards & Systems EDV-Dienstleistungs GmbH
    Embedded Software Engineer
    SOFTWARE PUBLISHING
    March 2022 - January 2023 (10 months)
    Establishment of a Proof Of Concept: IOT device with MDB capabilities to gather live telemetry data out of a vending machine (RaspberryPi, Go, Serial, MDB) sent over MQTT to a Reactive Java microservice.
    Internet of Things IoT MQTT
  • Cards & Systems EDV-Dienstleistungs GmbH
    Tech Lead | Architect | Senior Dev
    SOFTWARE PUBLISHING
    March 2019 - January 2023 (3 years and 10 months)
    Vienne, Austria
    • Designed and implemented the architecture of a large distributed payment system with a focus on Scalability, High-throughput, Low Latency, Fault-Tolerance using the micro-service architecture.
    • Leading a team of 5 members
    Microservices Spring Java Apache Kafka Kubernetes

Recommendations

Be the first to recommend Laurent

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

  • State Engineer Graduate
    Polytech'Nice Sophia
    2006
    Systèmes en temps réel et systèmes embarqués

Certifications

Skill set (24)

Categories