Fullstack Engineer, C#, .NET, React

CodiLime

Fullstack Engineer focusing on web application development for a large-scale analytics platform. Collaborating in an Agile environment with a distributed team, incorporating AI capabilities.

Posted 8/3/2026contractRemote • 🇵🇱 PolandMid-LevelSenior💰 PLN 16,500 - PLN 25,000 per monthWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in full-stack web development, particularly with React, TypeScript, C#, and ASP.NET Core. Proficient in developing complex user interfaces, REST APIs, and implementing secure multi-tenant application patterns while collaborating effectively with cross-functional teams.

Highest-signal resume keywords

Full-Stack Web DevelopmentReact and TypeScriptC# and ASP.NET CoreREST API DevelopmentEntity Framework

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack Web DevelopmentReactTypeScriptC#ASP.NET CoreREST API DevelopmentEntity FrameworkSQLOAuth 2.0JWT

Tools & Technologies

Azure SQLPostgreSQLMUIAI-Powered Development Tools

Industry Keywords

Data VisualizationMulti-Tenant SaaS SecurityData-Heavy InterfacesInteractive TablesRole-Based Access Control

Tech Stack

Tools & technologies

ASP.NETAzureEntity Framework.NETPostgresReactSQLTypeScript

About the role

Key responsibilities & impact

Develop and maintain web applications using React and TypeScript.
Develop complex user interfaces for data-intensive applications.
Design and implement large interactive tables, filters, and configuration screens.
Integrate data visualization and mapping solutions into business applications.
Develop backend services and REST APIs using C# and ASP.NET Core.
Design and optimize database access layers using Entity Framework.
Work with Azure SQL and PostgreSQL databases.
Integrate authentication and authorization solutions using OAuth, JWT, and Okta.
Implement secure multi-tenant application patterns.
Collaborate closely with product, data, and platform teams.
Participate in architectural discussions and technical decisions.
Use AI-powered development tools to improve productivity and code quality.
Contribute to the future AI capabilities of the platform.

Requirements

What you’ll need

6+ years of professional experience in full-stack web development.
Strong experience with C# and ASP.NET Core.
Strong experience with React and TypeScript.
Experience with component libraries such as MUI or similar design systems.
Experience with data-heavy interfaces, interactive tables, advanced filtering solutions, data visualization libraries, and mapping technologies.
Experience developing and maintaining REST APIs.
Practical knowledge of .NET 8+ ecosystem.
Experience with Entity Framework.
Strong SQL skills and experience with relational databases (Azure SQL, PostgreSQL).
Experience with OAuth 2.0, JWT, and role-based access control.
Understanding of multi-tenant SaaS application security.
Experience using modern AI-assisted development tools.
Good knowledge of English (minimum C1 level).

Benefits

Comp & perks

Flexible working hours and approach to work: fully remotely, in the office or hybrid
Professional growth supported by internal training sessions and a training budget
Solid onboarding with a hands-on approach to give you an easy start
A great atmosphere among professionals who are passionate about their work
The ability to change the project you work on