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Mathieu Le Petillon

@mathieulepetillon

Hands-on Technical Lead at 2C2P, where I increased payment throughput by 60% while reducing infrastructure costs by 66%.

Thailand

Message

At 2C2P (ANT Group), I lead the Payment Controller team while staying hands-on with architecture and critical code paths. I increased throughput by 60% and reduced infrastructure costs by 66% at equivalent load.

I designed and delivered a surcharge feature, improving backend response time to the payment page by more than 50%. I also led technical onboarding for Thai Airways and coordinated deployments and go-live readiness for other partners.

Before 2C2P, I designed microservices and an automated order management system for Natixis. At Echosens, I led a team of six engineers and testers through a software redesign for a regulated medical device platform.

Experience

Work history, roles, and key accomplishments

Current

Development Manager – Hands-on Technical Lead

Current

2C2P – ANT Group

Sep 2025 - Present (1 year 2 months)

Scaled system throughput by 60% and reduced infrastructure cost by 66% while leading a backend engineering team. Designed and delivered the surcharge feature end-to-end and led technical onboarding of Thai Airways.

C#.NET Core AWS AWS ECS DynamoDB Redis Performance Optimization Team Leadership Architecture Payment Systems

Technical Leader – Architect

2C2P – ANT Group

Feb 2023 - Sep 2025 (2 years 7 months)

Led architecture decisions for distributed backend systems on AWS and mentored developers. Integrated APMs and new partners, delivered complex features, and improved performance and reliability.

C#.NET Core AWS Lambda DynamoDB AWS ECS Elasticache Elasticsearch MySQL Redis Microservices Event Driven Architecture REST APIs CQRS DDD CI CD Security PCI DSS

Senior Backend Engineer – Freelance

Natixis

Feb 2021 - Feb 2023 (2 years)

Designed and implemented microservices for RFQ and order management on a newly redesigned platform. Built an order management system with trigger-based algorithms and a resilient automation engine.

C#Azure DevOps SQL Server Git Microservices Order Management Automation

Technical Leader – Architect – Scrum Master

Echosens

Sep 2015 - Dec 2020 (5 years 3 months)

Led a team of 6 engineers and testers in a regulated medical device environment. Designed a modular architecture and led a full software redesign, integrating external examination engines and setting up CI/CD.

C#WPF TFS SQL Server Git TeamCity jFrog NUnit xUnit Scrum Architecture CI CD

.NET Developer / Consultant

MULTICAM

Jan 2008 - Dec 2015 (7 years 11 months)

Built backend systems, REST APIs, and enterprise applications across e-commerce, hospitality, video production, and web domains. Delivered marketplace engines, order lifecycle management, SSO authentication systems, and media processing tools.

C#ASP.NET WPF SQL Server WCF REST APIs enterprise applications