Florian Hermouet Joscht

Chief Technology Officer

Salary / Daily rate

Paris, France

Freelance

Can come onsite

Skills

GolangTypescriptBackend DevelopmentAWS LambdaDockerEvent Driven ArchitecturePostgreSQLSQLiteRedisNeo4jGitRESTful APIsMicroservicesFrontend DevelopmentJavascriptReactNodeOVHcloudMongoDBMySQLDynamoDBRabbitMQFirebaseTerraformGraphQLSwagger/OpenAPIXcodeLinuxGitHubAWSElasticsearchMetabaseKubernetes

Languages

French (Native)English

About me

Intro

CTO with 9+ years of expertise in backend development and scalable infrastructure. Led technology migrations from PHP to TypeScript on AWS, developed gRPC-based logistics systems, expert in Node.js, Golang, Python with proven track record in fintech, logistics, and B2B media solutions.

Links

Work experience

Software Engineer

ElectraFreelance

Oct 2025 - Present

1 year 1 month

Paris, France

Chief Technology Officer

Good One

Dec 2022 - Present

3 years 11 months

Paris, France

Recruited and managed a technical team of 5+ members Planned the product and technical roadmap, processing over 300k social network posts per day Led development across frontend, backend, Android, networking, and infrastructure

Backend Developer

Betterway

Mar 2021 - Mar 2023

2 years 1 month

Paris, France

Migrated the PHP codebase to TypeScript and implemented event sourcing using AWS Lambda and Serverless, supporting over 100k end users Developed new features including IBAN (over 80k transactions per month) and Top-up for end users Managed integrations between backend systems and financial partners

Backend Engineer

Bigblue

Jul 2019 - Mar 2021

1 year 9 months

Paris, France

Developed backend services in Golang using gRPC for logistics processes Implemented address validation for order deliveries using multiple sources, verifying over 790k addresses per day Built a notification center for real-time anomaly alerts (in-app and email) Automated manual processes for the operations team (order fulfillment, CSV imports, etc.)

R&D Engineer

Keymetrics

Jan 2017 - Jul 2019

2 years 7 months

Paris, France

Developed Golang and Python agents with OpenCensus tracing integration Built backend Node.js applications for on-premise deployment (Docker, Kubernetes, GKE, Helm, Terraform) Created internal applications for key account billing and contract management Developed Node.js applications for embedded devices with custom OS using Yocto


Education

42 Paris

2015 - 2018

4 years

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