Hi, I'm Gautier.

I am a Staff Software Engineer and Functional Programming specialist currently building secure communication at Wire.

My career is driven by a simple belief: Software should be built to last. I don't just write code; I design systems that are maintainable, provable, and aligned with business goals. Whether I'm working as a freelancer, a mentor, or a lead developer, I focus on bridging the gap between high-level architectural theory and pragmatic, day-to-day delivery.

What I Bring to a Team

• Technical Rigor: I specialize in the Haskell ecosystem (Polysemy, Servant) and NixOS, using advanced type systems to eliminate entire classes of bugs before they reach production.
• Trusted Leadership: With a proven track record in remote-first environments, I lead by example—fostering collaboration, performing deep-dive architectural reviews, and mentoring the next generation of engineers.
• A "Craftsman" Mindset: I am an active contributor to the FOSS community and a frequent speaker. For me, engineering is a continuous journey of learning and sharing.

Current Focus & Technologies

I am currently deepening my expertise in Observability, Product Management, and Rust, ensuring that the systems I build aren't just technically sound, but also product-aware and highly visible.

My Daily Toolkit:

• Languages: Haskell (Expert), Nix, Java (Legacy/Architecture), Rust (Learning)
• Infrastructure: AWS, Kubernetes, Terraform, GitHub Actions
• Data: PostgreSQL, Cassandra, ElasticSearch

Let’s Connect

I am always open to discussing functional programming, backend architecture, or how to build better engineering cultures.

• Email: gautier [at] difolco [dot] dev
• Professional: LinkedIn / Passeport.dev
• Open Source: GitHub

⚡ Fun fact: I am an unbeatable pasta eater and a firm believer that the best engineering problems are solved over a good meal.

Technologies currently used

• Haskell (Servant, Polysemy), Nix(OS)
• Github Actions
• Terraform
• Cassandra
• ElasticSearch
• PostGreSQL
• AWS
• Kubernetes

Executive Summary

Staff Software Engineer & Functional Programming Specialist with over 12 years of experience building resilient, high-performance distributed systems. I specialize in bridging the gap between complex mathematical theory (Haskell, Category Theory) and pragmatic business value. I am a strong advocate for Software Craftsmanship, frequent open-source contribution, and fostering engineering cultures that prioritize maintainability and rigor.

Core Competencies