Architecting High-Performance Mobile & Distributed Systems

I help scale-ups and enterprises solve critical engineering challenges. From complex Flutter architectures to secure distributed systems. Principal Engineer | Ex-Google Developer Expert | Founder @ KLEAK

Kevin Segaud

The Builder's Mindset: Beyond Clean Code.

Building a product is easy. Building a system that handles millions of transactions, secures sensitive financial data, and scales without accumulating technical debt is where I come in.

With 10+ years in software engineering, I don't just act as a developer; I partner with CTOs and Founders to make high-stakes architectural decisions. Whether it is optimizing BLE communication for IoT devices or designing a decentralized finance platform, I bring the rigor of a Principal Engineer and the pragmatism of a SaaS Founder.

10+ Years High-Scale Engineering
Ex-GDE Recognized Expert (Flutter/Dart)
Founder Business-Aligned Strategy

How I Accelerate Your Roadmap

Technical Audit & Strategy

I analyze your codebase and infrastructure to identify bottlenecks, security risks, and scalability gaps. You get a detailed roadmap to fix them before they break production.

Fractional Principal Engineer

I join your team on a retainer basis to lead critical migrations, mentor senior developers, and own the architectural decisions for complex features.

The Builder Squad (KLEAK)

Need a full product built? I deploy with my trusted network of senior engineers to ship your MVP or V2 with "Principal-grade" quality from day one.

Engineering Challenges Solved

FinTech / Blockchain

Regular

The Challenge: Making DeFi yields accessible to everyday users without requiring blockchain knowledge, while meeting AMF regulatory requirements.

The Solution: Architected and built the entire app from the ground up, produced AMF compliance documentation, and delivered a seamless UX that abstracts away blockchain complexity for stablecoin liquidity pool yields.

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Distributed Systems

xfwd.link

The Challenge: Building a high-availability URL shortening service capable of handling concurrent write operations without latency.

The Solution: Designed a distributed system with custom caching layers to reduce database load and ensure 99.9% uptime.

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Media & Scale

Lefty

The Challenge: Building a client-facing dashboard for an influencer marketing platform that needed to handle complex campaign analytics and real-time data reporting at scale.

The Solution: Architected and built the entire client dashboard from scratch, delivering actionable insights for major international brands while maintaining performance under heavy data loads.

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Experience

Lead Front-End Engineer

Lefty

Architected and built the client-facing dashboard from the ground up. Delivered complex campaign analytics and real-time reporting features for major international lifestyle brands.

IoT & Mobile Expert

Lunii

Solved critical hardware-software integration challenges (BLE). Engineered a robust synchronization engine that handles thousands of concurrent device pairings seamlessly.

Senior Flutter Architect

ADEO

Standardized the mobile architecture across distributed teams for a major retail giant. Optimized CI/CD pipelines to cut deployment times and enforce code quality at scale.

Skills & Expertise

Languages & Frameworks

Dart (Expert) Flutter (Expert) Swift Kotlin JavaScript Go AngularDart

Mobile Development

State Management (BLoC, Provider) Performance Optimization Firebase Native Integration (iOS & Android) Bluetooth (BLE)

FinTech & Blockchain

Blockchain Integration WalletConnect DeFi Principles Financial Data Security gRPC

Architecture & Tools

Clean Architecture TDD Agile/Scrum CI/CD Git Android Studio Xcode

Education & Recognition

Master's Degree

Epitech

2016

Master's degree in Computer Science from Epitech, one of France's leading technology schools known for its innovative, project-based learning approach.

Former Google Developer Expert

Dart & Flutter

2018 - 2023

Was recognized by Google for elite expertise and community leadership within the Dart and Flutter ecosystems. Was one of the early Flutter experts globally and active in the French Dart community.

Ready to scale your product without the technical debt?

I have limited availability for new consulting engagements. Let's determine if I am the right technical partner for your next milestone.

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Toulouse, France