Hire Freelance
Fintech Rust Developers in France

Builds backend platforms around PHP 8+, Symfony, Laravel, and NestJS, using domain-driven, hexagonal, and event-driven architectures for REST APIs and microservices. Has implemented distributed integrations across AWS messaging services, Kubernetes deployments, relational and document databases, and regulated authentication flows.

• Designed OpenAPI contracts for service integrations
• Implemented OAuth2, OIDC, JWT, and Keycloak security
• Applied TDD with PHPUnit, Jest, and SonarQube
• Built event workflows with AWS SNS and SQS

Architected scalable data processing systems with Scala and FS2 for large-scale analytics. Developed RESTful APIs using Http4s, ensuring high throughput and low latency.

• Led migration to cloud infrastructure using Kubernetes
• Enhanced data serialization with Circe for JSON processing
• Designed event-driven architectures using Kafka

Architected distributed systems with Rust and C++ for high-frequency trading platforms. Spearheaded performance optimization projects reducing latency by over 50% in critical systems. Developed low-latency communication protocols for financial data exchange.

• Enhanced multi-threading capabilities in systems software
• Implemented custom memory management techniques
• Led refactoring of legacy C++ codebases to Rust

Developed decentralized applications on the Solana blockchain, using Rust and Anchor for smart contract development. Designed scalable backend services for financial platforms.

• Implemented TypeScript-based UI for blockchain interactions
• Optimized SQL queries for high-volume data processing
• Integrated Java-based middleware for cross-chain compatibility

Developed back-end services with C++ and Python for high-availability systems. Contributed to Qt-based interfaces for desktop applications.

• Enhanced Rust libraries for better concurrency support
• Integrated JavaScript for responsive UI components
• Optimized C code for embedded systems

Develops Rust systems spanning embedded control software for marine vessels and drones, backend services, and WebAssembly applications. Co-created a real-time collaborative audio workstation using Rust, WASM, and CRDTs, combining low-latency state synchronization with cross-platform interfaces.

• ESP32 and NVIDIA Jetson embedded targets
• CAN, Modbus, and NMEA protocol integration
• Flight-controller software for autonomous drones
• Substrate and Ink! smart-contract development

Built an open-source, multi-tenant distributed key-value and object store in Rust with Raft replication, two-phase commit, write-ahead logging, virtual sharding, and S3/REST/gRPC interfaces. Also develops low-level systems and machine-learning tooling spanning x86-64 assembly, RocksDB, Transformers, Polars, and whisper.cpp.

• Standard-library-only Raft key-value library
• Role-based access control and storage encryption
• Compiler and virtual-machine implementations
• 200-plus automated tests across published projects

Builds native Android and iOS products alongside production Rust backends using Axum, taking systems from application design through deployment and monitoring. Applies retrieval-augmented generation and agent orchestration to shipped software, with additional work in interactive 3D and simulation using Bevy.

• Developed Kotlin applications for Android
• Built Swift applications for iOS
• Operated deployments with Firebase and Supabase
• Prototyped 3D simulations using Bevy

Develops asynchronous concurrent Rust services on Tokio for algorithmic digital-asset trading across more than 140 centralized and decentralized exchanges. Built exchange connectivity for roughly 20 venues using FIX, REST, and WebSocket protocols, with latency-sensitive order and market-data paths below 100 milliseconds.

• Founded an audited on-chain protocol
• Supported more than 12,000 blockchain identities
• Implemented NATS-based service messaging
• Built EVM integrations using The Graph and Multicall

Implemented a C memory allocator and a shell interpreter, applying low-level memory-management and process-control concepts. Built Rust and GTK4 neural-network tooling alongside a C/GTK OCR-based Sudoku solver, combining numerical computation with desktop interfaces.

• x86-64 and 68000 assembly programming
• Ansible API and REST backend development
• Active Directory and GNS3 networking
• OCaml and Haskell programming

Architected embedded systems with a focus on Linux-based platforms using Yocto. Developed real-time applications in Rust for resource-constrained environments.

• Created custom Linux kernel modules
• Implemented C++ solutions for hardware interfacing
• Automated build processes with Bash scripting

Developed high-performance network services using Rust, focusing on low-latency data processing. Contributed to the optimization of a distributed storage system, achieving significant improvements in data retrieval speed.

• Built a custom RPC framework in C++ for microservices.
• Implemented real-time analytics pipelines with Python and TypeScript.
• Enhanced security features in IoT firmware using C.
• Optimized database query performance in a large-scale NestJS application.

Specialized in cybersecurity tools development with Kali Linux and Metasploit to enhance penetration testing capabilities. Conducted network vulnerability assessments using Nmap.

• Developed automated security scripts for Linux environments
• Integrated BurpSuite Pro for web application security testing
• Configured Windows systems for enhanced security protocols

Led development of distributed systems using NodeJs and Rust for real-time data processing. Implemented Kafka for event-driven architectures to handle high-throughput data streams. Utilized Redis for caching and fast data access.

• Integrated GitlabCI for automated testing and deployments
• Developed monitoring solutions with Kibana
• Optimized data flow with advanced queuing techniques