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Offer summary
(Summary generated by AI based on the full job description)
The project covers full-stack SaaS work in Agile sprints, switching between feature delivery and infrastructure automation. Core stack includes .NET 9, ASP.NET Core, C#, EF Core, MSSQL/Azure SQL, React + TypeScript (microfrontends, Module Federation) and Terraform with Azure DevOps CI/CD (YAML). Responsibilities include designing backend services and APIs with Clean Architecture, building and maintaining microfrontends, managing and tuning SQL schemas and queries, authoring Terraform IaC, implementing CI/CD pipelines, securing APIs (OAuth2/JWT, Azure AD, Key Vault), adding observability (Application Insights, Serilog), writing automated tests, refactoring legacy logic and handling production incidents.
from: 16 September 2026
to: 16 October 2026
24 000 - 28 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:senior
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland
Requirements
Expected technologies
.NET
ASP.NET Core
C#
SQL
Azure SQL
Microsoft SQL Server
Terraform
Azure DevOps
xUnit
Playwright
Jest
Vitest
Optional technologies
React
TypeScript
Azure Data Factory
Databricks
Microsoft Power BI
Bicep
Razor
WinForms
Operating system
Windows
Our requirements
- 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
Optional
- 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
Your responsibilities
- 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
- Note: Detailed project information will be shared during the recruitment process.
About the project
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?
This is how we organize our work
This is how we work
at the client's siteagile
This is how we work on a project
- TDD
- Continuous Deployment
- Continuous Integration
- DevOps
- issue tracking tools
- test automation
- testing environments
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.
What we offer
- Flexible cooperation model
- Hybrid work setup – 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
Benefits
- sharing the costs of sports activities
- private medical care
- sharing the costs of professional training & courses
- life insurance
Mindbox Sp. z o.o.
At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.
Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.
Fullstack Engineer
24k–28k zł / mth. (B2B)
I apply to:
Mindbox Sp. z o.o.
Kraków, Lesser Poland
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