Staff Software Engineer: Cloud Backend Architect & Tech Leader

Vonage; Kraków; On-site; PLN 300,000 - 540,000; Full time

Benefits offered by this job

Medical Insurance (Allianz)

Life Insurance (Uniqa)

Glasses Reimbursement

Cafeteria (My Benefit)

Discretionary Time Off (DTO)

Volunteer Time (VTO)

Ericsson Care Line

Job summary

Vonage is seeking a Staff Engineer to anchor the RNE group within Foundation Engineering in Kraków. You will shape the cloud-native platform architecture, drive critical architectural decisions, and mentor engineers across teams.

You will own design strategies for highly concurrent backend systems, collaborate with product leadership, and contribute to on-call duties. Strong Go/JVM, distributed systems, and cloud skills are essential.

Qualifications

• Extensive programming experience in Go or JVM with Go adoption.
• Experience building and maintaining enterprise-grade systems at scale.
• Deep expertise in highly concurrent, distributed architectures and systems.
• Experience leading architectural decisions at team or cross-team level.
• Prior Team Lead/Tech Lead experience with mentoring/coaching engineers.
• Experience with containerised apps and cloud-native infrastructure.
• Strong performance profiling and optimisation skills.
• Experience with relational and non-relational databases (PostgreSQL, Redis).
• Excellent communication and stakeholder management skills.

Responsibilities

• Provide technical leadership for design and development of highly concurrent, distributed backend systems.
• Drive and own architectural decisions ensuring scalability, reliability and maintainability.
• Lead performance optimisation initiatives and resolve complex system-level challenges.
• Set standards for testing practices and automation for production-ready code.
• Define and enforce coding standards and engineering best practices.
• Mentor and grow engineers across levels.
• Collaborate with product and engineering leadership to align tech strategy with business goals.
• Provide out-of-hours on-call support as part of rota.

Skills

Go (Golang)

Java/Spring Boot

Distributed systems

Leadership / Team Lead

Mentoring

Cloud-native / Kubernetes

Performance profiling

PostgreSQL/Redis

Communication skills

Tools

Docker

Kubernetes

Terraform

AWS

CI/CD

Job description

Vonage is seeking a Staff Engineer to anchor the RNE group within Foundation Engineering in Kraków. You will shape the cloud-native platform architecture, drive critical architectural decisions, and mentor engineers across teams.

You will own design strategies for highly concurrent backend systems, collaborate with product leadership, and contribute to on-call duties. Strong Go/JVM, distributed systems, and cloud skills are essential.