Career page
( Consult this page very often to check our latest openings )
Work Environment
SL3J SYSTEMS hosts new talents in a friendly engineering environment rich from scientific and technical points of view.
We care of each individual to build a robust experience in Electronics and be able to face new technology challenges knowing it continuously changes and gets more sophisticated. Our engineers benefits from our technology learning program covering multiple aspects of the Electronics, Micro-electronics, Software and Firmware.
Our ambition is to hire the best talents and lead them through the best career path.
N.B. We do not hire through any
Head hunter
New positions
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JOB18FY26 Electronics Product Development & Industrialization Engineer
To support its expansion in the heart of the Semiconductor Valley of Rousset (Southern France), SL3J SYSTEMS is looking for a passionate Electronics Product Lifecycle Engineer to join its R&D team.
This position offers a unique opportunity to contribute to the complete lifecycle of innovative electronic products—from concept and PCB design to prototyping, in-house manufacturing, qualification, certification and production support. You will work alongside hardware, firmware, software and AI engineers on next-generation embedded systems, electronic instruments and IoT solutions.
Outstanding graduates are welcome. Preference will be given to candidates with 3+ years of industrial experience.
What You'll Do
- Contribute to the complete lifecycle of professional electronic products.
- Design, prototype, assemble, debug and validate embedded electronic hardware.
- Participate in our in-house manufacturing activities, including SMT pick-and-place assembly, wiring, product integration and automated testing.
- Prepare manufacturing documentation and support product industrialization.
- Coordinate enclosure development, mechanical integration and product qualification (EMC, Safety, IP67/IP68).
- Work with multidisciplinary teams to deliver reliable, production-ready products and continuously improve existing designs.
What You'll Work With
- EDA/CAD: Altium Designer, KiCad, SPICE, Rhino 3D
- Programming: Python, C, Git
- Embedded systems and RTOS
- Hardware/Firmware test automation
- AI-assisted engineering tools
- In-house prototyping, SMT assembly and manufacturing equipment
Your Profile
Degree: Electronics Engineering, Embedded Systems or equivalent.
Skills
- Electronic product development from concept to production.
- Analog and digital circuit design.
- PCB development, debugging and prototyping.
- Strong analytical skills with a practical, hands-on mindset.
Languages
French is the primary working language within the team and with many customers.
Professional English is essential for technical documentation and communication with international customers, suppliers and technology partners.
We value curiosity, autonomy, rigor and a genuine passion for engineering. Previous industrial experience is appreciated, but motivated graduates are encouraged to apply.
Compensation & Location
Location: On-site – Rousset (Aix-en-Provence), France
Experience: Open to exceptional graduates, with preference given to candidates with 3+ years of industrial experience.
Salary: Competitive and commensurate with qualifications and experience.
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JOB17FY25_HW_Design_Engineer Hardware Design Engineer (Full-Time, On-Site – Rousset, France)
Job Ref: JOB17FY25_HW_Design_Engineer
To support its business expansion in the heart of the semiconductor valley of Rousset, South France, SL3J is looking for a talented Hardware Design Engineer to join our team and contribute to the development of our next-generation IoT devices — powered by our proprietary Real-Time Operating System and enhanced with AI-assisted capabilities.
This role offers a unique opportunity to work on cutting-edge electronics — from analog and digital design to high-speed chip-to-chip communication and RF front ends — while collaborating with firmware, software, and AI specialists on complete end-to-end solutions.
We welcome outstanding fresh graduates, and give priority to candidates with 3+ years of proven industry experience.
What You’ll Do
- Design and validate embedded hardware and analog/mixed-signal circuits
- Integrate AI inference layers with real-time control electronics
- Develop secure deployment flows from backend servers to edge devices
- Collaborate across the stack: IT, firmware, hardware, and mobile applications
- Participate in all phases of development: simulation, prototyping, testing, hardware production, firmware rollout, mobile integration, and final qualification
- Apply test-driven design principles across FW, SW, and HW unit test using our SLT3G1™ all-in-one Electronic Tester
- Take full ownership of the hardware manufacturing pipeline, including:
- Preparing Gerber files for tapeout and PCB fabrication
- Managing BOM creation, sourcing, and purchasing
- Generating and validating pick-and-place files
- Leading prototyping runs using our in-house SMT pick-and-place machine and PCB fabrication process
- Coach and mentor lab technicians, ensuring smooth prototyping, testing, and assembly workflows
What You’ll Work With
- Programming: Python, C, Perl
- Databases: SQL
- Electronic Design Tools:
- Must-have: Altium Designer (discrete hardware design)
- Nice-to-have: Cadence / Synopsys (ASIC, analog & mixed-signal)
- Embedded Systems: Private RTOS, RTOS stack integration, wireless protocols, mesh networks
- Testing & Simulation: Spectre, SPICE, unit testing, automation tools
- AI Integration: AI model training and inference layer integration
- Prototyping & Manufacturing: SMT pick-and-place machines, PCB fabrication, lab technician workflows
Your Profile
Degree: MSEE or Engineering diploma in Microelectronics (or related field)
Knowledge & Skills:
- Full-cycle electronic product development — from simulation to field deployment
- Analog and mixed-signal circuit design
- Discrete board-level hardware design
- Real-time embedded systems and HW-SW co-design
- Practical experience in BOM management, sourcing, and prototyping
- Exposure to PCB fabrication and assembly processes is a plus
Mindset & Values:
- Strong commitment to IP protection and internal knowledge ownership
- Rigor in documentation, system traceability, and maintainability
- Clear communication and ability to work across multidisciplinary teams (French and English)
- Willingness to coach and support technicians
Compensation & Location
Location: On-site in Rousset, France
Experience Level: Open to exceptional fresh graduates, with priority given to candidates with 3+ years of professional experience
Salary: Based on profile and experience
Note: Applications must be made directly by candidates. Recruiters, agencies, and headhunters: please keep away.
Internship new opennings
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INTERN1FY25: IoT / AI training model
Reference: INTRN1FY25
Type: Internship
Duration: 5–6 months
Internship – MSEE / Embedded Systems & Artificial Intelligence
As part of an ambitious R&D initiative at the intersection of industrial IoT and Artificial Intelligence, we are offering a graduate-level internship opportunity for an MSEE or final-year engineering student.
The internship focuses on the implementation of an AI engine designed to interpret data from a proprietary embedded system. The AI model will be deployed and executed on a secure private cloud server (e.g., AWS), using a customized Foundation Model (FM) pipeline.
The intern will contribute to:
- Modeling and interfacing with a real-world electronic system
- Structuring and processing data collected from the system for training purposes
- Training and integrating a Foundation Model on a cloud-based environment
- Creating a feedback loop between AI-driven interpretation and the physical connected object
- Evaluating the relevance and accuracy of AI responses in the context of real system behavior
This project offers a unique opportunity to explore the full implementation stack of an embedded AI engine—from data acquisition and RTOS-based firmware to server-side AI analysis and real-time system feedback.
Why We Insist on a Strong Electronics Background
As a company specialized in the design and testing of advanced electronic systems, we place strong emphasis on recruiting interns with solid electronics fundamentals. While this project includes high-level AI, cloud, and software aspects, its success depends on a solid grasp of how real circuits behave, how they are modeled, and how they interact with embedded intelligence.
We value candidates who demonstrate a firm understanding of:
- Transistor fundamentals (MOSFETs, BJTs, diodes)
- Circuit theory (Ohm’s law, impedance, filtering, etc.)
- Basics of RTL design and FPGA logic
- Use of laboratory instruments (oscilloscopes, multimeters, signal generators)
- Exposure to electronic simulation tools (e.g., Spectre, ADS, LTSpice, or equivalent)
- A strong academic track record (high GPA) in electronics and programming disciplines
Candidate Profile
- MSEE/Engineering school post-graduate student (final year). Undergraduate students may be considered with a limited scope
- Good programming skills (Python, C/C++, etc.)
- Experience with microcontrollers and solid knowledge of MCU architecture, memory management, operating systems, and communication protocols
- Mastery of basic electronic circuits
- Experience with electrical circuit simulation tools
- Comfortable with physical modeling using CAD tools
- Very good English communication skills (spoken and written)
- A strong will to learn and push boundaries
- Ability to work in structured, project-based environments
- Familiarity with version control systems (Git) is a plus
- PCB design experience is a plus
Miscellaneous
Location: 39 AVE Gaston Imbert, BAT II, 13790 Rousset (France)
Our Lab/offices:
13790 ROUSSET, France