Senior Staff Software Engineer

Quick Facts

• Role: Senior Staff Software Engineer

• Focus: Core platform architecture and scalable backend systems (cloud and hybrid)

Description

Join as a Senior Staff Software Engineer to help shape core platform architecture and build scalable backend systems across cloud and hybrid environments. You’ll guide key technical decisions, mentor teams through design and code reviews, and contribute to modern, resilient services. The work spans Java/Spring, .NET, Kubernetes, Kafka, workflow orchestration, and multi-tenant data models.

Responsibilities

• Drive technical decisions via technology evaluation, POCs/benchmarks, and recommendations

• Shape platform architecture across Kubernetes (AKS), Kafka, workflow orchestration, and multi-tenant data models

• Lead design/code reviews, RFCs, and scalability and cloud-readiness alignment

• Raise engineering standards through mentoring on GitOps, CI/CD, observability, and supply-chain security

• Evaluate on-prem systems for scalability, performance, resiliency, security, and define SaaS migration paths

• Collaborate cross-functionally using customer and field insights to validate architecture

• Produce architecture artifacts (C4 diagrams, RFCs, design reviews, benchmarks)

• Build and improve microservices using Java (Spring), JDK 21+, and .NET with cloud-native, API-first, resilient patterns

• Create reusable tooling via shared libraries, templates, and platform examples

• Use AI-assisted development and review generated code for correctness, security, and maintainability

Requirements

• 10+ years of senior engineering leadership and strong technical decision-making

• Computer Science/Engineering degree or equivalent practical background

• Hands-on Java/Spring expertise

• C#/.NET architecture skills including code/design reviews and scalability guidance

• Directory services knowledge: Active Directory, Entra ID, LDAP, authentication protocols, directory models

• Windows/on-prem reasoning for agents, domain controllers, customer environments, and dual on-prem/SaaS constraints

• Production Kubernetes experience: service design, Helm, GitOps, autoscaling, multi-tenant SaaS operations

• Distributed data fundamentals: partitioning, consistency trade-offs, ingestion/ETL, query tuning; relational DBs at scale plus NoSQL/analytical exposure

• Event-driven architecture using Kafka/RabbitMQ, API-first design, resilience patterns, and observability

• Strong documentation skills for RFCs and design docs; influence teams without direct authority

Benefits

• Hybrid work model with a modern office located in Kraków

• Competitive health and wellness benefits

• Career growth, technical advancement, and continuous learning opportunities

• Collaborative, innovative, and supportive work environment

• Opportunity to join newly built engineering teams