Senior Backend Engineer- Agentic Pentest

Team8; Polska; On-site; PLN 180,000 - 300,000; Full time

Job summary

Ox Security secures the AI-driven SDLC from prompt to production, eliminating real-time risks in AI code generation through cloud runtime. We are building the future of cybersecurity for the AI era, and you will join a fast-growing team to design and implement secure, high-performance backend systems at scale.

As a Senior Backend Engineer, you’ll lead architecture, collaborate with product and frontend teams, mentor junior engineers, and drive reliability and scalability across our platform.

Qualifications

• Senior Backend Engineer role requiring design and implementation of backend systems.
• Ability to collaborate with cross-functional teams on architecture and requirements.
• Focus on performance, scalability and security of applications.
• Experience in troubleshooting production issues with minimal downtime.
• Strong emphasis on code reviews and engineering best practices.

Responsibilities

• Design and implement scalable backend systems and APIs.
• Collaborate with Product, Frontend, and other engineering teams on system architecture and requirements.
• Optimize performance, scalability, and security of applications.
• Troubleshoot and resolve production issues with minimal downtime.
• Lead code reviews and promote best engineering practices.
• Mentor and support junior engineers.
• Continuously improve system design, reliability, and development processes.

Skills

Backend development

API design

System architecture

Production troubleshooting

Mentoring

Job description

Description

About the Position

Ox Security secures the AI-driven SDLC from prompt to production. We eliminate critical, real-time risks from AI code generation through cloud runtime by doing what conventional tools can't: unifying development and cloud context to stop vulnerabilities right at the source. At OX, we're building the future of cyber security for the AI era. If you're looking to work on disruptive technology with an amazing team, you belong here.

We're growing fast and looking for a Senior Backend Engineer to join our Engineering team and help build the infrastructure that powers our platform at scale.

This is a high-impact role where you'll work alongside top-tier engineers, designing and building secure, high-performance systems in a fast-paced environment. If you enjoy solving complex technical challenges and want your work to have real impact - we'd love to meet you.

Requirements:

What You'll Be Doing

• Design and implement scalable backend systems and APIs
• Collaborate with Product, Frontend, and other engineering teams on system architecture and requirements
• Optimize performance, scalability, and security of applications
• Troubleshoot and resolve production issues with minimal downtime
• Lead code reviews and promote best engineering practices
• Mentor and support junior engineers
• Continuously improve system design, reliability, and development processes