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//Software Architect · 15+ years

Backend systems,
built to last.

I help engineering teams design, build, and rescue backend systems — fintech ledgers, gov-tech platforms, and enterprise services across Europe and the US. 15+ years architecting systems that stay correct under load, audit, and growth.

~/whoami
$ whoami
simo jaković — software architect

$ stack --core
php      laravel  symfony
node     nestjs   next.js
postgres mysql

$ status
 available · contract via agency
//What I do
// system-design

System & API design

Domain modelling, service boundaries, event flows, and the data layer for high-stakes platforms.

// architecture-review

Architecture review

A senior second opinion on your codebase, scaling plan, and the trade-offs you are about to commit to.

// platform-work

Senior platform work

Hands-on contract delivery in PHP/Laravel/Symfony and the Node/Nest/Next stack — via agency.

//Work

Recent projects

Systems and platforms I've built across fintech, gov-tech, and enterprise.

2022-present

Open Balkan - T4A system

Cross-border electronic toll collection platform for JP Putevi Srbije - a distributed, high-availability system processing millions of transactions, with real-time payment integration and daily data synchronization across Serbia, North Macedonia, Montenegro, Croatia, and Republika Srpska. Also built the supporting ERP for invoicing, billing reconciliation, and reporting.

phplaravelpostgresql
2025-present

Governius

Modern governance platform - full-stack architecture, API layer, and backend services, with AI-driven automation that reduces manual workflow steps for end users.

next.jsnode.jsreact
2025-2026

XM

Backend engineering for one of the world's largest online trading brokers (20M+ users): high-throughput trading systems, API development, and platform reliability.

phplaravelmysql
//Also

I also teach 1000+ developers

Interview-prep courses, certification exam prep, and writing — the same experience I bring to client work.

//Writing

From the articles

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