09/10/2026 updated
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100 % available
Senior Distributed Systems Engineer | Web3 & Cloud Expert | Rust & Go
Lisle sur Tarn, France
Only remote
Master in Computer ScienceAbout me
I'm Arnaud Mimart, passionate about distributed systems, cloud-native technologies, and the Web3 ecosystem. I enjoy understanding how things work under the hood, whether it's a storage engine, a networking protocol, or a blockchain.
DDDDevOpsPostgreSQLMongoDBRabbitMQRedisBlockchainSmart ContractsRust (Programming Language)KubernetesSolidityApache KafkaGraphQLApi DesignRestful Api
Blockchain & Web3 Development
Expertise in designing and developing blockchain protocols using Cosmos-SDK, CometBFT, CosmWasm, IBC and Solidity/EVM. Proven experience in building layer 1 blockchains, designing Prolog VMs as Cosmos-SDK modules, integrating CosmWasm VM modules, and leading bridges integrations with EVMs and Solana.
Cloud Infrastructure & DevOps
Strong background in managing Kubernetes cloud infrastructure, setting up observability pipelines for monitoring and alerting, and establishing CI/CD practices using GitHub Actions, ArgoCD, GitOps and Jenkins. Experience with Docker, Kustomize, Helm, Prometheus and Grafana.
Back-end Development
Solid experience in back-end development using Rust, Go, Java, Scala and C on microservice architectures. Proficiency in API design with GraphQL, gRPC and REST, applying DDD, CQRS and microservices patterns, as well as working with databases and messaging systems such as MongoDB, PostgreSQL, Redis, Kafka and RabbitMQ.
Protocol Architecture Design
Extensive experience in redesigning and designing protocol architectures, including time-based scheduling core modules and consensus internal state investigation on CometBFT.
Smart Contract Development
Development of CosmWasm smart contracts, including semantic database implementations, demonstrating hands-on expertise in decentralized application logic.
API & Microservices Design
Proficiency in designing APIs using GraphQL, gRPC and REST, applying domain-driven design (DDD), CQRS and microservices (uServices) architectural patterns.
Database & Messaging Systems
Practical knowledge of relational and non-relational databases including MongoDB, PostgreSQL and Redis, as well as messaging platforms such as Kafka and RabbitMQ.
Site Reliability Engineering
Experience as a Site Reliability Engineer, covering disaster recovery procedures, observability pipeline setup, and maintaining CI/CD stacks for production environments.
Experience
Professional experience10+ years
Freelancer since2023
Languages
EnglishFluentFrenchNative speaker
Project history
Redesign of protocol architecture based on Cosmos-SDK, design of a time-based scheduling core module, investigation of consensus internal state inconsistency on CometBFT, instrumentation and monitoring of critical protocol components, and leading bridges integrations with EVMs and Solana (LayerZero, IBC Eureka).
Design of protocol architecture, leading the back-end team, development of a layer 1 blockchain based on Cosmos-SDK, design of a Prolog VM as a Cosmos-SDK module, integration of the CosmWasm VM module, development of CosmWasm smart contracts (e.g. semantic database), definition and setup of CI/CD practices and DevOps culture, and technical contact with node operators.
In charge of the Kubernetes cloud infrastructure, setup of observability pipeline for monitoring and alerting, description of disaster recovery and main procedures, setup and maintenance of CI/CD stack, and leading back-end development in Java/Golang.