Software Security Backend Engineer (Node.js and/or Python)

📍 Location: Kraków (hybrid: 2 days in the office per week)
📄 B2B: 200 - 250 PLN / h
🏦 Industry: Banking

We are currently looking for a Senior Software Security Engineer (Node.js and/or Python) to join a strategic global banking initiative focused on building modern, secure and scalable backend platforms within the cybersecurity domain. The role combines hands-on software engineering, cloud-native architecture and security engineering, with strong ownership of production-grade services and engineering excellence.

You will work within international cross-functional teams responsible for developing next-generation security products and services, contributing to the migration from vendor-based platforms toward open-source and cloud-native solutions deployed at enterprise scale.

 

Key responsibilities:

• Design, develop and maintain secure, scalable backend services using Python, Node.js and cloud-native technologies.
• Build and optimize distributed systems running on Google Cloud Platform and Kubernetes environments.
• Develop high-quality production code with strong focus on reliability, observability and automation.
• Own the lifecycle of backend services on GCP, ensuring resilience, performance and cost efficiency.
• Design and implement OAuth2/OpenID Connect authentication and authorization solutions.
• Contribute to event-driven architectures and highly concurrent backend systems.
• Collaborate closely with engineering and platform teams to deliver secure and scalable solutions.
• Mentor engineers and actively contribute to engineering best practices and technical excellence.
• Drive automation initiatives to improve developer productivity and operational efficiency.
• Stay up to date with modern backend and cloud technologies, sharing knowledge across teams.

Requirements:

• Strong hands-on experience with Python (Django) and/or Node.js (Typescript/NestJS).
• Experience building production-grade backend services and distributed systems.
• Hands-on experience with GCP services.
• Strong understanding of Infrastructure as Code and Terraform.
• Experience designing scalable, secure and observable cloud-native architectures.
• Solid knowledge of Kubernetes and containerized environments.
• Understanding of Zero Trust and modern security engineering practices.
• Experience with PostgreSQL performance optimization and event-driven architectures.
• Strong engineering mindset with focus on automation, quality and operational excellence.
• Ability to work effectively in cross-functional and international engineering teams.

Nice to have:

• Experience with Go or Rust.
• Contributions to open-source projects, technical blogging or public GitHub portfolio.
• Broad full-stack understanding with backend specialization.
• Passion for solving complex engineering and security challenges at scale.

What we offer:

• Opportunity to work on strategic, global cybersecurity and cloud engineering initiatives.
• Collaboration with highly experienced international engineering teams.
• Long-term cooperation within a stable enterprise-scale environment.
• Private healthcare package (LuxMed).
• Multisport card.

Why apply for an Antal job offer?

When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process.

About Antal

Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research.

Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

Discover our latest job openings: https://en.antal.pl/candidates
Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland