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Hi, I’m Tognon Guidi, a software engineer with 13+ years of experience designing and scaling complex, high-performance systems. I specialize in PHP/Symfony, Domain-Driven Design, and Hexagonal Architecture, and I’ve led architectural transformations that reduce debt and improve maintainability across large fintech platforms. I’ve also spearheaded AI-driven productivity initiatives, integrating tools like Claude AI and Copilot into the engineering lifecycle to speed delivery while preserving code quality and security. Beyond coding, I’m a hands-on leader who mentors engineers, champions robust engineering standards, and bridges gaps between business requirements and technical execution to deliver reliable, scalable solutions.…Hi, I’m Tognon Guidi, a software engineer with 13+ years of experience designing and scaling complex, high-performance systems. I specialize in PHP/Symfony, Domain-Driven Design, and Hexagonal Architecture, and I’ve led architectural transformations that reduce debt and improve maintainability across large fintech platforms. I’ve also spearheaded AI-driven productivity initiatives, integrating tools like Claude AI and Copilot into the engineering lifecycle to speed delivery while preserving code quality and security. Beyond coding, I’m a hands-on leader who mentors engineers, champions robust engineering standards, and bridges gaps between business requirements and technical execution to deliver reliable, scalable solutions.

Tognon Guidi

Back-End Developer, Full Stack Developer, Web Developer, +2

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Hi, I’m Tognon Guidi, a software engineer with 13+ years of experience designing and scaling complex, high-performance systems. I specialize in PHP/Symfony, Domain-Driven Design, and Hexagonal Architecture, and I’ve led architectural transformations that reduce debt and improve maintainability across large fintech platforms. I’ve also spearheaded AI-driven productivity initiatives, integrating tools like Claude AI and Copilot into the engineering lifecycle to speed delivery while preserving code quality and security. Beyond coding, I’m a hands-on leader who mentors engineers, champions robust engineering standards, and bridges gaps between business requirements and technical execution to deliver reliable, scalable solutions.…Hi, I’m Tognon Guidi, a software engineer with 13+ years of experience designing and scaling complex, high-performance systems. I specialize in PHP/Symfony, Domain-Driven Design, and Hexagonal Architecture, and I’ve led architectural transformations that reduce debt and improve maintainability across large fintech platforms. I’ve also spearheaded AI-driven productivity initiatives, integrating tools like Claude AI and Copilot into the engineering lifecycle to speed delivery while preserving code quality and security. Beyond coding, I’m a hands-on leader who mentors engineers, champions robust engineering standards, and bridges gaps between business requirements and technical execution to deliver reliable, scalable solutions.

Available to hire

Hi, I’m Tognon Guidi, a software engineer with 13+ years of experience designing and scaling complex, high-performance systems. I specialize in PHP/Symfony, Domain-Driven Design, and Hexagonal Architecture, and I’ve led architectural transformations that reduce debt and improve maintainability across large fintech platforms. I’ve also spearheaded AI-driven productivity initiatives, integrating tools like Claude AI and Copilot into the engineering lifecycle to speed delivery while preserving code quality and security.

Beyond coding, I’m a hands-on leader who mentors engineers, champions robust engineering standards, and bridges gaps between business requirements and technical execution to deliver reliable, scalable solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

French

Fluent

English

Advanced

Work Experience

Engineering Lead (Agile / SCRUM) at Extrac Adabra

December 1, 2023 - June 1, 2024

Architectural Transformation: Orchestrated the platform migration to Hexagonal Architecture and Domain-Driven Design (DDD). Decoupled core business logic from frameworks, resulting in a 30% improvement in system maintainability and a significant reduction in technical debt. AI-Driven Productivity: Spearheaded the integration of AI-assisted development tools (Claude AI, Copilot) within the engineering lifecycle, optimizing coding workflows and increasing team delivery velocity by 25%. High-Scale FinTech Engineering: Led end-to-end development of complex payment systems using Stripe API, engineered secure transaction state management, automated tax integrations, and subscription workflows, achieving 99.9% auditability and regulatory compliance.

Back End Developer & Technical Mentor at Extrac Adabra

January 1, 2022 - June 1, 2024

Primary contributor to the core backend services (PHP / Symfony / CQRS pattern) and backend microservices (AngularJS); engineered secure transaction workflows via Stripe API and implemented stateless authentication using JWT across the platform. Established engineering standards with a handbook, promoted cross-functional collaboration, and designed data models and API design practices to ensure long-term maintainability.

Backend Developer at CompTalib / Clementine

September 1, 2021 - December 1, 2021

Architected and scaled backend microservices for an AI-powered accounting automation platform using TypeScript, Node.js, and NestJS. Implemented containerization and DevOps practices, automated release processes, and aligned technical execution with evolving business requirements.

Full-Stack Web Developer at D-AIM (SPLIO)

March 1, 2017 - May 1, 2021

Big Data Engineering: designed and engineered a dynamic SQL query generation engine for massive data exploration; served as Technical Lead for ColumnStore database support and significantly improved data retrieval performance. Architecture modernization: led migration from legacy monoliths to microservices and front-end integration, adopting TypeScript/Node.js with scalable backend services.

Backend Developer at E-Merchant

September 1, 2011 - September 1, 2015

Database engineering: optimized complex business logic using Oracle 10g to handle high-concurrency transactions during peak shopping periods. Data integration & ETL: built robust ETL pipelines and XML data flows. Core application features: PHP (4/5) with CodeIgniter; contributed to architecture and data pipelines.