Fabrice Lainard | Freelance software engineer: critical systems, 3D, real-time and agentic AI

Expertise

Native, server, data, interfaces, 3D, AI: I master every layer of a piece of software, and how they fit together.

Agentic AI and LLMs

I design agentic harnesses and integrate LLMs into business software, with the same rigor as a critical system.

AI is nothing new to me: expert systems for fault diagnosis and industrial planning early in my career, machine learning and deep learning at Systel, LLM agents today.

Agentic harnesses: tool loop, context management, error recovery
Agent frameworks (LangChain, LangGraph, Claude Agent SDK) and multi-agent orchestration
MCP servers to connect agents to your systems
RAG and embeddings over your business documents
Interchangeable LLM providers, with no vendor lock-in
Guardrails: human approval, permissions, audit log, cost control

Rust, TypeScript, Python, LangChain, LangGraph, Claude Agent SDK, MCP

Critical and embedded systems

Real-time software, interfaces with existing equipment that is sometimes poorly documented, standard or proprietary communication protocols.

C++23, Qt / QML, Rust, Linux

3D, GIS and scientific visualization

3D globes and mapping, Lidar point clouds, modelers for structural analysis, anatomical landmarks for implant design.

CesiumJS, VTK, OpenSceneGraph, PCL, Three.js, OpenGL

Robotics and industry

Robot control and supervision, sensor and camera acquisition, connected devices, mobile supervision apps.

Embedded C++, Python, MQTT, Android

Web platforms and data

Robust back ends, rich business interfaces, data modeling, server-side real-time, containerized deployment.

Rust, Java / Spring, React / TypeScript, PostgreSQL, Docker

Projects

A selection of recent projects, most of them built from the ground up.

Crisis management

Memnis

A sovereign crisis management platform for multi-agency disaster response: shared 3D situational awareness, risk simulation, real-time coordination and AI agents supervised by the operator. It builds on more than ten years of R&D work in crisis management.

Rust, TypeScript

DefenseThemys

Target designation for surveillance frigates

Modernization of the CIDO system, interfaced with the ship's existing equipment. Validated during sea trials.

C++23, Qt

ResearchNove3D, CNRS

Scaled robot, real-time insect tracking

RFID detection over a 100 m² plot, 4G transmission to AWS. Took over the project and simplified its communication architecture.

Embedded C++, Python, Vue.js

AgricultureFilpack

3D modeling of crop protection structures

Design, development and deployment of every version of the solution, on a 3D globe.

CesiumJS, React, Java / Spring

Other projects

Embedded and marine

Onboard multifunction navigation and weather repeater
Analysis of kite traction for merchant shipping

3D and scientific visualization

3D modeler for structural analysis
Real-time Lidar acquisition
Anatomical landmarks for implant design

Industry and robotics

Supervision of riddling robots
Wine sediment visualization for oenological analysis
Control software for a painting robot
Piping risk analysis, AutoCAD plugin

Working together

I handle the entire software life cycle. You have a single point of contact who designs, writes, deploys and maintains your software.

Scoping

The business, the constraints, the existing systems and the risks come first. Specification, technical choices, documented architecture.

Development

Every layer: embedded, server, database, interfaces, 3D, AI agents. Readable, tested code, delivered in stages.

Deployment

Rollout, integration with your equipment and systems, field testing through to acceptance.

Maintenance

Fixes, enhancements, updates. I remain accountable for what I deliver, over time.

Engagement models

Fixed-price project

A scope, a timeline and a price agreed together. I deliver the complete software, from design to deployment.

Time and materials

Billed on time spent, for a scope that evolves: end-to-end development, or reinforcing your team on part of the project.

Audit and consulting

Architecture or code review, especially of AI-generated code: security, maintainability and consistency before going to production. A technical opinion or a fix for a specific problem, over a few days.

With or without AI agents

I read code fluently. Depending on the project, I write it myself or work with AI coding agents. Either way, I design it, review it and stand behind the result.

I work mostly remotely, and on site when the project requires it.

Background

More than 30 years designing demanding software, in R&D and as a technical director.

I started out in artificial intelligence, in Golden Common Lisp, building expert systems for automatic fault diagnosis and industrial planning (Concept-IA). Then came real-time acquisition and processing of ultrasonic data for non-destructive testing, notably for the French Alternative Energies and Atomic Energy Commission, CEA (NDT System), followed by organizational modeling of hospitals (IQ-Santé).

As R&D Director at Physical Networks Software, I built infrastructure management software used by around a thousand customers, including the French Air Force and DCN. I then launched my own 3D data center management product (NetDCSoftware). At Systel, I was architect and product owner of crisis and major-risk management solutions for government agencies, and team lead of the “major risks” department: real-time risk analysis, big data, 3D immersion on the globe.

Today, I work independently through FL Programming.

Recommendations

“Fabrice managed the project we carried out together from end to end, from the design phase through to the on-time delivery of the product we ordered. I recommend him without reservation.”

Clément Diot, CTO

Fabrice brought us all his expertise and support to complete the development of a robot designed to observe insects for the CNRS.
Read more
He was able to take over a project already under development and propose a programming strategy across several languages, C++ and Python.
By simplifying an initially complex communication architecture, he enabled us to meet the client's needs and complete the project.
We thank him for his commitment alongside us, for his useful advice, and for successfully meeting the many challenges of this project.
We hope to work with him again soon on new systems of the same kind.

Vincent Raquin, R&D engineer, project manager, Nove3D

I worked directly with Fabrice LAINARD, a highly experienced “full-stack” developer, for more than 6 years at SYSTEL.
Read more
When Fabrice was team lead of the “major risks” department, his initiative and technical skills enabled us to deliver the most innovative and complex projects.
I witnessed his great professionalism and strong involvement in development and in research at the cutting edge of high tech. On “critical” and “high-availability” systems, he worked from prototyping through to deployment.
Fabrice demonstrated his ability to tackle problems across many areas of computing (software architecture, big data, artificial intelligence, machine and deep learning…) using a wide range of languages and frameworks (C++, Java, Angular, React, Python, Spark…).
Fabrice has very solid technical foundations, the ability to quickly grasp complex systems, and an aptitude for quickly understanding and learning new emerging technologies.

Philip Hall, operations manager, development engineering office, Systel

Fabrice supported us for several months on the development of software for the modernization of a radar and navigation system.
Read more
As the project was a modernization, the new system had to interface with the existing systems.
Since the existing interfaces were rather poorly documented, we had to iterate flexibly after trials on the test platform and on board.
Fabrice adapted to this complex and uncertain environment, going the extra mile and adjusting his schedule when necessary.
He also integrated standard and non-standard communication protocols to deliver a custom system that met the client's specifications.

Jean Gaboriau, Project Manager

I had the opportunity to work with Fabrice on the development of the graphical interface of a structural analysis software.
We were starting from scratch, and Fabrice gave us very good advice on the tools to use, and brought real added value even in defining the scope.
Read more
After several months of collaboration, we are very satisfied with Fabrice's work, both on the user interface and on scientific visualization (with VTK).
I recommend Fabrice, who will support your project with his know-how and initiative.

Amine Boumnijel, Offshore Structural Engineer

I was lucky to work with Fabrice, who was extremely professional and handled all my requests in record time! Fabrice was committed throughout the project and didn't hesitate to go beyond the scope of the contract to bring software improvements. Proactive, autonomous and great to work with! I recommend him without hesitation!

Fabrice de Maloric, CTO/CEO

We had the opportunity to work with you on a plot development project between two software packages (AutoCAD / BPWORKS), with programming that integrated these applications directly into the AutoCAD interface.
Read more
The methodologies proposed and the tools developed proved perfectly suited to our needs, which shows a good understanding of the requirements and your technical capabilities.
We were able to observe these qualities throughout our exchanges, and I would also like to commend your availability and flexibility in responding to our requests.
Looking forward to working with you again.

Chams-Eddine ARAFA, Civil Engineering Design Engineer

A selection from more than 30 years of collaborations, translated from French. LinkedIn profile

Skills

AI

LangChain, LangGraph, Claude Agent SDK, agents and tool calling, MCP servers, embeddings, machine learning and deep learning (DeepLearning4j, CUDA), expert systems, Prolog

Languages

C, C++ (11 to 26), Rust, Java, C#, TypeScript, JavaScript, Python, Kotlin, Swift, Lisp (Golden Common Lisp), SQL

Native and mobile

Qt / Qt Quick / QML, Boost, MFC, .NET / WPF / WCF / XAML, Android, iOS

Server

Spring / WebFlux, Node.js, Django, Tokio / actix-web, microservices, RabbitMQ, BPMN, Kurento (WebRTC)

Web

React / Redux, Angular, Vue.js, BlueprintJS, Tailwind CSS, Vite, HTML / CSS

3D and GIS

OpenGL, DirectX, shaders, OpenSceneGraph / osgEarth, VTK, PCL, ACIS, CesiumJS, Three.js, Unity, Unreal, Unigine, PostGIS, H3, proj4, Valhalla, OpenStreetMap

Data

PostgreSQL, Oracle (PL/SQL), SQL Server (T-SQL), MySQL, MongoDB, Spark, ontology modeling (RDFS)

Systems and communication

Linux, Windows, embedded, Android, MQTT, Bluetooth, 4G, RFID, VME / VXI industrial buses, Intel RealSense and Allied Vision cameras

DevOps

Git, GitLab CI, Docker / Compose, Kubernetes, Jenkins, Caddy, Keycloak, AWS, Playwright E2E tests

Architecture and methods

Clean Architecture, Clean Code, SOLID principles, Agile (Scrum), V-model

Contact

A demanding project? Let's talk

Let's start with a free, no-obligation 30-minute call. You tell me about your project, and I give you a first opinion on its feasibility, its risks and how to approach it.

Book a 30-minute call or email me

Email: LainardFabriceProgramming@outlook.com
Phone: +33 6 45 01 63 78
Hours: Monday to Friday, 8 am–8 pm (Paris time)
LinkedIn: fabrice-lainard

Fabrice Lainard, Freelance software engineer