Senior Software Engineer – Bare Metal as a Service & Datacenter Networking

Mirantis; Warszawa; On-site; PLN 180,000 - 300,000; Full time

Job summary

Mirantis in Warszawa, Poland, seeks a Senior Software Engineer to drive design and implementation of control planes for high-density AI infrastructure. You will contribute to Rust and Go codebases, build production-grade microservices, and foster robust, scalable cloud-native solutions.

The role emphasizes Datacenter Networking, DPU architectures, and automated bare-metal provisioning with CNCF-aligned observability and testing practices.

Qualifications

• Senior Software Engineer with expertise in Datacenter Networking and DPU architectures.
• Experience designing control planes and production-grade microservices.
• Familiarity with Rust and Go and building with Kubernetes operators.
• Strong ability to define API schemas (gRPC/Protobuf and REST) and FR/NFR.

Responsibilities

• Control Plane Development: design, build, and maintain microservices and operators in Rust and Go.
• Architecture & API Design: write architectural specs and system diagrams for FR/NFR.
• Network Integration: integrate with modern network OS and DPU hardware platforms.
• Observability & Diagnostics: instrument services with OpenTelemetry and analyze root causes.
• Quality & Engineering Excellence: participate in PR workflows with high test coverage.

Skills

Software architecture

Datacenter Networking

DPU architectures

Rust

Go

Kubernetes operators

OpenTelemetry

Tools

Rust

Go

Kubernetes

Protobuf

REST API

SQL

Job description

About the Team

Our engineering team builds next-generation, cloud-native bare-metal orchestration platforms for AI neo-cloud environments. We operate on a T-shaped engineering model: while each engineer brings deep expertise in a primary domain, every team member maintains practical fluency across neighboring systems. This shared foundation enables rigorous design reviews, effective cross-domain code reviews, and dependable on-call coverage. Our development is fundamentally based on open-source projects, and contributing to them is a major part of our work. We develop primary control plane software in Rust and Go, leverage Kubernetes operators, and foster an OpenTelemetry-first operational culture.

Role Overview

We are seeking a Senior Software Engineer who combines strong software architecture principles with deep technical domain expertise in Datacenter Networking and DPU architectures. Fitting into our T-shaped engineering model, you will drive the development of control planes powering high-density, high-throughput infrastructure for AI training and inference workloads. Familiarity with automated bare-metal provisioning and lifecycle management is a strong asset.

Core Responsibilities

• Control Plane Development: Design, build, and maintain production-grade control plane microservices, custom Kubernetes operators, and robust reconciliation engines in Rust and Go.
• Architecture & API Design: Author clear Functional (FR) and Non-Functional Requirements (NFR), architectural specs, system sequence diagrams, and clean gRPC/Protobuf and REST API schemas.
• Network Integration: Develop custom integration modules and integrations for modern network operating systems (SONiC, NVUE, Cumulus) and DPU hardware platforms.
• Observability & Diagnostics: Instrument services end-to-end using OpenTelemetry (OTel) traces and metrics, performing systematic root-cause analysis across polyglot distributed systems.
• Quality & Engineering Excellence: Participate in rigorous, review-gated pull request workflows across Rust, Go, and SQL codebases while ensuring high test coverage via mock-driven testing.