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Principal Backend Software Engineer

Bucharest💼 Full-time🗓 2025-09-25 → 2026-09-25

Core

Architecting and building new systems and improving existing ones for a high-throughput distributed backend infrastructure supporting millions of users globally.

Role type

Principal Backend Software Engineer (Infrastructure)

Builds

Developer platform, APIs, and services

Domain

Blockchain, Cloud Native

Deliverable

production ML models | product features | infrastructure

Required skills

System design, Scalability engineering, Performance optimization, Debugging, Cloud architecture, API development, Distributed systems, High-throughput system design, Low-latency system design, Production experience with Java, Golang, or C++

Preferred skills

AWS EKS, API platforms, Crypto, AI

Technologies

Java, Golang, C++, AWS, Kubernetes, EKS

Responsibilities

Define vision for backend infrastructure, Design and maintain scalable infrastructure and services, Lead system design discussions and code reviews, Develop best practices for backend infrastructure, Debug production issues across the stack

Seniority

Principal, hands-on IC with strategy & mentorship

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