Mindbox Sp. z o.o.Active opening

FullStack Engineer

Kraków, PolandOn-siteSeniorFound today
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At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.

You’ll work in Agile sprints, contributing across multiple apps and shared libraries in a hands-on role. Expect to move between feature delivery and infrastructure automation, making this a true full-stack position that touches all layers of the stack.

Sounds like your kind of challenge?

What you get in return

  • Flexible cooperation model

  • Hybrid work setup – remote days available depending on the client’s arrangements - 2 days a week 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

  • Design and implement backend services and APIs in .NET 9, applying Clean Architecture principles

  • Build and maintain React + TypeScript microfrontends using a shared UI library with Module Federation

  • Manage MSSQL / Azure SQL schemas, write/tune T-SQL and EF Core queries

  • Author Terraform IaC templates (modules, state, multi-environment provisioning) for Azure resources

  • Implement and optimize Azure DevOps CI/CD pipelines (YAML-based)

  • Secure APIs using OAuth2/JWT, Azure AD (Entra ID), and Key Vault for secrets management

  • Instrument services for observability (Application Insights, Serilog structured logs), add health checks and alerts

  • Read and refactor legacy .NET and T-SQL logic for incremental migration

  • Write automated tests: unit, integration, API, and end-to-end coverage

  • Troubleshoot and fix production incidents, enhancing operational stability

  • Actively participate in Agile ceremonies, estimate stories, review PRs, and contribute to best practices

  • 5+ years of commercial full-stack experience with .NET (6+/9), ASP.NET Core, and C#

  • Strong EF Core and SQL (Azure SQL / MSSQL) skills (query tuning, indexing, transactions, stored procedures)

  • Hands-on Azure experience – App Service, Azure SQL, Storage Account, Key Vault, Service Bus / Functions

  • Solid Infrastructure-as-Code expertise with Terraform

  • CI/CD pipelines experience in Azure DevOps (YAML build/release, environment promotion)

  • In-depth understanding of REST API design and security (OAuth2, JWT, OIDC)

  • Automated testing (xUnit, Playwright, Jest/Vitest) and TDD practices

  • Observability and logging tools: Application Insights, Serilog

  • Good Git practices, PR reviews, and agile team collaboration

  • Fluent English (B2+) proficiency for technical collaboration

Nice to Have:

  • Production experience with React + TypeScript
  • Knowledge of Azure Data Factory, Databricks, Power BI
  • Familiarity with microfrontends / Module Federation
  • Event-driven integrations (Service Bus, Event Hubs)
  • Docker/Kubernetes (AKS), ARM/Bicep templates
  • Experience modernizing monolithic UIs (e.g., Razor, WinForms)
  • Azure Certifications (AZ-204, AZ-400) or HashiCorp Terraform Associate

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.

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Mindbox Sp. z o.o.FullStack Engineer
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