Freelancer profile translated to English.
Back to original languageAbout Toni
I support large companies, scale-ups, and IT departments in designing modern and resilient backend architectures.
My approach: Clean Architecture, well-defined microservices, and AWS cloud infrastructure designed for production.
Recent clients: TotalEnergies (2 years — digital energy services), Trusk (real-time order system), WAAT (nationwide charging station supervision),
LegalPlace (billing module, -30% on query times).
Stack: NestJS, TypeScript, AWS (Lambda, DynamoDB, S3, RDS), Kubernetes, PostgreSQL,
CI/CD GitHub Actions. AWS Solutions Architect certified.
Available for 3+ month missions, remote or hybrid Paris. Let's talk about your project.
English
Fluent
French
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- Shine France SASBackend Developer - NodeJSBANKING AND INSURANCEJanuary 2026 - Today (7 months)Paris, FranceFraud Ring Detection ("Connected Users"): end-to-end design and delivery of a feature enabling compliance analysts to identify links between users (shared IBANs, devices, KYC data) - domain modeling, API, GraphQL exposure, and React interface in the back-office, with an operator pilot followed by generalization based on QA feedback.VIP Account Management: migration of storage from Datastore to Cloud Spanner with an append-only audit trail, fine-grained management of operator permissions, and GraphQL exposure.Suspicious Activity Reports (SAR): migration to the compliance microservice and addition of filtering by market (FR/DE) with scoped permissions.Canonical Transaction Ingestion: implementation of a Pub/Sub subscriber on the risk microservice side to feed compliance analysis.
- WAAT
On Malt
IT DevelopmentENERGY AND UTILITIESAugust 2025 - February 2026 (6 months)Malakoff, FranceDesign and development of a real-time supervision platform for a fleet of over 20,000 electric charging stations nationwide.Scalable backend architecture on Kubernetes, capable of handling over 5,000 simultaneous charging points with latency < 200ms.Clean Architecture NestJS application — test coverage > 80%, optimal maintainability.Cloud-native AWS infrastructure with 99.9% availability and automatic failover.Intelligent alerting system reducing maintenance intervention times by 40%. - TRUSK FRANCEBackend DeveloperTRANSPORTATIONDecember 2024 - August 2025 (8 months)Clichy, FranceDesign of a real-time order system to optimize logistics operations — over 10,000 orders processed daily via microservices architecture on GCP.Event-driven NestJS microservices + RabbitMQ — asynchronous communication with processing of over 500 messages/second at peak.Kubernetes (GKE) deployment with auto-scaling — zero downtime during production releases.Complete observability stack (ELK + Grafana) — mean time to incident detection reduced by 60%.Optimization of message throughput by 35% while maintaining transactional consistency.
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Certifications
- AWS Certified Solutions Architect Associate SAA-C03AWS2024