Chiliz
Aug 2022 — Apr 2026Senior Backend Engineer
// Remote
Chiliz is the blockchain infrastructure behind Socios.com - one of Europe's largest Web3 consumer products, connecting sports fans with their favorite clubs through digital fan tokens. I joined as a senior backend engineer and grew into a lead role across multiple teams.
My work centered on building and owning PHP/Symfony microservices that had to be fast, reliable, and consistent under high concurrency. The biggest technical challenges were around asynchronous blockchain transactions ensuring users always got a consistent experience even when on-chain confirmations were delayed or failed. Event-driven architecture with SQS/SNS was central to how we solved this.
As a lead, I was responsible not just for writing code but for defining service boundaries, reviewing architecture decisions, and making sure the systems we built could be maintained and scaled by the teams that came after us.
My work centered on building and owning PHP/Symfony microservices that had to be fast, reliable, and consistent under high concurrency. The biggest technical challenges were around asynchronous blockchain transactions ensuring users always got a consistent experience even when on-chain confirmations were delayed or failed. Event-driven architecture with SQS/SNS was central to how we solved this.
As a lead, I was responsible not just for writing code but for defining service boundaries, reviewing architecture decisions, and making sure the systems we built could be maintained and scaled by the teams that came after us.
- Architected event-driven data pipelines using AWS SQS/SNS for async blockchain transaction processing
- Led backend development of a high-scale digital asset purchase feature for thousands of concurrent users, launched without incident after extensive stress testing
- Built blockchain-integrated backend services for wallet management, NFT minting, and staking via EVM smart contracts
- Implemented full observability stack: Sentry, Datadog, Grafana, performance tracking, log pipelines
- Managed Kubernetes deployments using Helm, ArgoCD and GitOps workflows across production environments
- Mentored junior developers, ran code reviews and drove cross-service architecture alignment