Buildr[dot]Fun
Secure. Decentralized. Stylish.
Seasoned freelance backend & DevOps engineer crafting secure infrastructure, decentralized systems, and stylish products that scale.
$ cat about.md
const engineer = {
role: "Backend & DevOps",
philosophy: "Secure. Decentralized. Stylish.",
experience: "6+ years",
focus: [
"Infrastructure as Code",
"Self-hosted Solutions",
"Privacy-first Architecture",
"Open Source Advocate"
],
available: true
};
$
Building the infrastructure behind great products
I'm a freelance backend and DevOps engineer with a passion for building systems that are secure by design, decentralized by architecture, and stylish in execution.
From self-hosted infrastructure to zero-trust networks, I help teams and organizations take back control of their data and their destiny. No vendor lock-in. No compromises on privacy.
Every project I touch gets the same treatment: clean architecture, battle-tested security, and a developer experience that doesn't make you want to tear your hair out.
6+
Years Experience
50+
Projects Delivered
99.9%
Uptime SLA
What I bring to the table
Full-spectrum backend and infrastructure engineering, from code to production.
Backend Engineering
APIs, microservices, and distributed systems built for reliability and performance. Event-driven architectures that scale horizontally.
DevOps & CI/CD
Automated pipelines, container orchestration, and infrastructure as code. Ship faster with confidence and zero-downtime deployments.
Security Engineering
Zero-trust architectures, hardening, audits, and encryption-at-rest. Security baked in from day one, not bolted on after the breach.
Self-Hosted Infrastructure
Mail servers, XMPP, object storage, password managers — all running on your hardware, under your control. No cloud dependencies.
Decentralized Systems
Federated protocols, peer-to-peer networks, and distributed storage. Building systems where no single point of failure exists.
Monitoring & Observability
Metrics, logging, alerting, and dashboards that give you real visibility into your systems. Know before your users do.
Things I've built and shipped
A selection of projects showcasing backend, infrastructure, and security work.
Mail.buildr.fun
Complete self-hosted communication stack: Stalwart Mail (SMTP/IMAP/JMAP), ejabberd XMPP, Garage S3 storage, Caddy reverse proxy, WireGuard VPN, and Vaultwarden password manager — all on bare metal.
Zero-Downtime CI/CD Pipeline
Designed and implemented a blue-green deployment pipeline with automated rollback, health checks, and canary releases. Reduced deployment time from hours to minutes with zero customer impact.
Zero-Trust Network Architecture
Implemented a zero-trust security model for a distributed team using WireGuard mesh VPN, mutual TLS, and role-based access control. Eliminated VPN concentrator bottlenecks entirely.
Kalao NFT Marketplace
NFT marketplace on Avalanche scaled from launch to thousands of concurrent users. C-Chain and X-Chain integration, staking mechanics, NFT escrow and auction smart contracts, and a real-time NFT indexer built in Go handling high-throughput event ingestion. Deployed on GKS.
Rematch.tv
Backend platform scaled from zero to thousands of requests per second. Go Lambda functions on AWS via Serverless Framework, PostgreSQL database administration, Terraform IaC maintenance and upgrades, and Slack ChatOps integrated with GitLab CI/CD pipelines.
MEV Capital
PnL position tracking and Telegram alerting system with detailed report generation for MEV strategies. Real-time monitoring of on-chain positions with automated performance reporting and actionable analytics.
Mazars — Junior Audit Assistant
Financial audit intern supporting middle-market engagements. Conducted sampling tests, substantive testing, and analytical review procedures. Drafted audit reports and working papers in compliance with NEP (Normes d'Exercice Professionnel), contributing to the issuance of financial statements.
Academic background
A dual track in computer science and business administration.
EPITECH — European Institute of Technology
2016 – 2021Master's Degree — Titre d'Expert en Technologies de l'Information
Five-year program focused on software engineering, systems architecture, and project management. Hands-on learning through collaborative projects, competitive programming, and real-world industry deliverables.
KEDGE Business School
2012 – 2016Bachelor's Degree — Business Administration and Management, General
Core curriculum in corporate finance, financial auditing, management control, and business strategy. Strong foundation in analytical reasoning and cross-functional communication.
Things I tinker with
Personal projects ranked by feature density — open source, actively maintained.
Lafifi
Crypto / Cross-PlatformMulti-chain, multi-wallet crypto portfolio tracker built with Flutter. Aggregates self-custody wallets across 24+ blockchains, DeFi positions, CeFi holdings, bank accounts, and NFT galleries with historical price charts, allocation breakdowns, and automatic value snapshots.
Polify
Music / Cross-PlatformCross-platform music manager built with Flutter. Aggregates tracks from local storage, S3, BitTorrent, and Soulseek P2P into a unified library with playback, metadata enrichment via MusicBrainz, audio fingerprinting via AcoustID, and full ID3 tag editing.
BuildHut
DevOps / Self-HostedSelf-hosted binary distribution platform for Android, Linux, and Windows apps. Features secure S3-backed uploads, version management, build retention policies, organization support, telemetry API, developer portal, and public app discovery pages.
Chromaprint
Audio / Flutter PackageDart FFI bindings for the Chromaprint audio fingerprinting library (AcoustID). Generates compact fingerprints from raw PCM audio for music identification. Supports Android, iOS, Linux, and macOS with encoding/decoding and hash computation.
Domainager
DevOps / CLI ToolCLI tool for managing domain names across multiple registrars (Namecheap, Njalla, Cloudflare). Features multi-account support, unified commands that auto-detect domain ownership, secure credential storage via OS keyrings, JSON output, and stdin piping for scripting.
Let's build something great together
Whether you need a secure infrastructure overhaul, a self-hosted stack, or help designing a distributed system — I'm here to help.