W3Global
Software Security Engineer Backend
Skills
19 days ago
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Important information
Contract type:
Freelance / Contract
Location:
Kraków, Poland
Work mode:
Onsite
Published on:
1 October 2026
What they need
**Role Software Security Engineer Backend
Location: Krakow, Poland(hybrid, 3 days in a week)
Mode: Contract** Skills: Python, Django, Node.js, TypeScript, GCP, Kubernetes (GKE), Terraform, PostgreSQL, OAuth2/OpenID Connect, Backend Development Responsibilities
- Design develop and maintain secure backend services and cloudnative applications
- Drive Engineering Excellence initiatives across Software Security platforms
- Deliver productionready code and contribute directly to software development activities
- Build scalable backend services using Python Nodejs and modern cloudnative technologies
- Architect solutions on GKE and optimize PostgreSQL performance for highconcurrency environments
- Build and support eventdriven architectures using PubSub
- Own the full lifecycle of services on GCP ensuring resilience observability security and cost efficiency
- Design and manage OAuth2 and OpenID Connect authentication flows
- Translate business requirements into scalable technical solutions
- Promote engineering standards quality automation and operational excellence
- Mentor engineers and contribute to technical leadership across teams
- Drive adoption of secure coding automation and cloud engineering best practices
- Continuously evaluate and adopt emerging technologies and engineering trends
To Be Successful In This Role You Should Have
- Deep expertise in Python Django andor Nodejs TypeScriptNestJS
- Experience delivering productiongrade backend services
- Knowledge of Go and modern backend development practices
- Handson experience with Google Cloud Platform GCP
- Experience with Cloud Run GKE and Filestore
- Strong Infrastructure as Code IaC experience using Terraform
- Experience building scalable secure backend applications
- Strong understanding of Zero Trust security models
- Knowledge of OAuth2 and OpenID Connect authentication frameworks
- Experience with PostgreSQL performance optimization
- Experience with EventDriven Architectures using PubSub
- Strong software architecture and engineering design skills
- Fullstack awareness with deep backend specialization
- Strong problemsolving and innovation mindset
- Experience mentoring engineers and driving engineering excellence
- Strong understanding of automation observability resiliency and cloudnative operations
- Ability to work effectively in Agile engineering environments
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