Status: #резюме #CV #ищуработу #opentowork
Specialization: #java #spring #fintech #highload #backend
Level: #senior #lead
Languages: English (C1), Russian (Native)
Experience: 6+ years
CV: Link to CV

Hello,

My name is Maksim. I am a Senior Java Backend Developer with 6+ years of experience building and scaling revenue-critical payment systems in banking and fintech 💳.

In my current role, I acted as a technical lead for a team of three engineers while building a QR payment platform from scratch. The system processes 18M+ transactions annually and directly contributes to multi-million annual revenue. I was responsible for core architectural decisions — enforcing idempotent execution, designing rate-limited REST integrations, and implementing end-to-end observability to guarantee financial traceability and production stability under high load. Alongside development, I drove technical direction, reviewed critical changes, and ensured production-grade quality across the project.

I also redesigned and scaled a high-load transfer service generating ~$4.56M in annual commission revenue. By introducing asynchronous AML execution, batched job processing, and multi-instance-safe orchestration, I ensured predictable scaling to ~500 RPS peak. I increased payment conversion from 64% to 89% through service-level redesign based on deep production analysis and eliminated a double-payment race condition that had been causing ~$146K in monthly financial losses 📈.

My focus is ownership of complex financial flows: building resilient architectures, preventing revenue leakage, and ensuring stability under stress. I am motivated to join a company where backend engineering directly influences business performance and where strong technical execution translates into measurable impact 🚀.

I would welcome the opportunity to contribute as a senior engineer who can both deliver individually and take responsibility for critical initiatives when needed.

#fulltime #parttime #remote #relocation