At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.
Join our client’s team, where you’ll play a key role in shaping a next-generation Software Security platform at one of the world’s leading global financial institutions. Your contribution will help deliver high-impact solutions in cybersecurity – open-source, cloud-native security services built in-house and running at enterprise scale.
You’ll step in as a Software Security Engineer – Backend, working closely with cross-functional agile teams in the Security space to drive technical delivery and best-in-class design and code. Your role will be central to moving away from high-cost vendor platforms toward open-source, cloud-native solutions with a high degree of automation – not just execution.
Sounds like your kind of challenge?
#LI-Hybrid – 6x/month from the office in Kraków
What you’ll be doing
- Designing and implementing scalable, secure backend services using Python (Django) and Node.js (TypeScript/NestJS), with high-performance components written in Go
- Architecting for Google Kubernetes Engine (GKE), optimising PostgreSQL query performance for high-concurrency workloads, and building event-driven architecture with Pub/Sub
- Owning the full lifecycle of your services on GCP, ensuring they are resilient, observable, and cost-efficient
- Designing and managing OAuth2/OpenID Connect flows within GCP; treating security as a feature with Zero Trust models embedded from the start
- Implementing Infrastructure as Code (Terraform) and always considering automation as a default approach – reducing toil and enabling faster, more secure delivery
- Mentoring team members, building engineering communities that raise the bar on quality and efficiency, and constructively challenging existing thinking to develop better paths forward
- Staying ahead of industry shifts (Go, Rust, TypeScript) and guiding the engineering community on evolving trends
Note: Detailed project information will be shared during the recruitment process.
What you get in return
- Flexible cooperation model – choose the form that suits you best
(B2B, employment contract, etc.) - Hybrid work setup – 6x/month from the office in Kraków
- Collaborative team culture – work alongside experienced professionals eager to share knowledge
- Continuous development – access to training platforms and growth opportunities
- Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
- High quality equipment – laptop and essential software provided
Who we’re looking for
- Deep expertise in Python (Django) and/or Node.js (TypeScript/NestJS), with a proven track record of shipping production-grade services
- Hands-on experience with GCP services (Cloud Run, GKE, Filestore) and Infrastructure as Code (Terraform)
- Ability to design and implement scalable, secure backend services with high-performance components in Go
- Experience architecting with GKE, optimising PostgreSQL for high-concurrency, and building event-driven systems (Pub/Sub)
- Knowledge of OAuth2/OpenID Connect; security-first mindset with practical experience of Zero Trust models
- T-shaped engineering profile: broad full-stack understanding with deep backend expertise
- Passion for automation, engineering excellence, and continuous learning; actively delivers code to production
Nice to have:
- Ability to spot a problem or opportunity and independently engineer a solution end-to-end
- Thinks holistically about the impact of their work beyond immediate delivery
- Open-source contributions, GitHub portfolio, or technology blog
- Generalist mindset – comfortable applying engineering thinking across multiple domains, not just one specialisation
Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.
I will handle your recruitment
Anna Rodak-Bucka
