Senior .NET Developer REMOTE, Bulgaria

Poland and Middle-Eastern Europe
Bulgaria
Remote

Who this role is best for

Best suited to experienced .NET developers with a strong interest in enterprise migration and AI integration, working in the rail transportation and asset-leasing domain.

Best fit for

  • Professionals who enjoy working with AI tools to enhance software delivery
    — “Practical experience using AI-powered assistants to improve productivity, quality, or decision-making in software delivery”
  • Candidates comfortable with international teams and structured agile delivery
    — “international delivery environment using Scrum, two-week sprints”

Things to consider

  • Work permit required for EU-based candidates, despite being a remote role
    — “Work from the European Union region and a work permit are required”
  • The role involves complex system understanding and documentation
    — “Understanding and documenting complex business rules, data, and dependencies”

How to stand out

  • Highlight experience with AI tools like GitHub Copilot and Claude Code in your resume
    — “Practical experience using AI-powered assistants to improve productivity”
  • Emphasize your background in enterprise migration or legacy system modernization
    — “migrating and modernizing a business-critical enterprise platform”
  • Showcase your ability to integrate with enterprise systems and manage data migration
    — “Integrating the new solution with enterprise systems and supporting data migration”
  • Demonstrate your skills in building reusable components and patterns
    — “Building a reusable application platform with shared components and common development patterns”
  • Demonstrate familiarity with React, TypeScript, and PostgreSQL in your portfolio
    — “React and TypeScript for the frontend, and PostgreSQL for data storage”
Pace · SteadyCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Built a reusable application platform
  • Migrated existing business functionality
  • Integrated new solution with enterprise systems
  • Delivered incremental releases with automated testing
Typical background
Experience in .NET developmentStrong background in backend development

Skills & requirements

Required

C#.NETAsp.net CoreRESTTDDDockerAWSTerraformXunitVitestPlaywright

Preferred

Ai-powered AssistantsGenaiAgent-based WorkflowsAutomation PatternsAi-augmented Development

Stack & domain

.NETAsp.net CoreWebapiRESTTDDDockerAzure DevopsC#ReactTypeScriptPostgreSQLAWSTerraformXunitVitestPlaywrightClaude CodeGithub CopilotTeamworkCollaborationCommunicationProblem-solvingLeadershipAICloudDataAutomationDigital Products

About the role

Original posting from Poland and Middle-Eastern Europe via Greenhouse

Xebia is a global AI-first, digital transformation, and engineering partner. With over 25 years of experience and a team of 5,000 professionals across 16 countries, we help organizations design and build scalable products, platforms, and data-driven solutions. 

We specialize in Artificial Intelligence, Data and Cloud, Intelligent Automation, and Digital Products, combining deep technical expertise with a strong focus on engineering excellence and a people-first culture.  

In the CEE region, we’re a team of nearly 1,000 experts delivering modern applications, data platforms, and AI solutions for clients such as Millennium, ING, Play, Edenred, Arabian Drilling, FedEx, Leroy Merlin, Truecaller, Volotea, Schmitz Cargobull, and many, many more. We work with leading technologies including AWS, Azure, GCP, Databricks, and Snowflake, and combine strong engineering culture with a consulting mindset and a continuous focus on growth and knowledge sharing. 

The project focuses on migrating and modernizing a business-critical enterprise platform for an international company in the rail transportation and asset-leasing sector.

The first phase establishes the technical foundation and migrates an initial set of business modules. The priority is to preserve existing functionality and business rules while introducing selected improvements in usability, automation, performance, observability, and security. Delivery follows a phased approach to support operational continuity throughout the transition.

You will be:

Building a reusable application platform with shared components and common development patterns.

Migrating existing business functionality while maintaining functional parity.

Understanding and documenting complex business rules, data, and dependencies.

Integrating the new solution with enterprise systems and supporting data migration.

Delivering incremental releases supported by automated testing, user acceptance testing, and post-release stabilization.

The technology stack includes C# and .NET for backend development, React and TypeScript for the frontend, and PostgreSQL for data storage. Cloud infrastructure uses AWS and Terraform, with xUnit, Vitest, and Playwright supporting automated testing.

The team works in an international delivery environment using Scrum, two-week sprints, and regular refinement, planning, and review sessions. Close collaboration between engineers, business stakeholders, and domain experts is essential to understanding existing processes and translating them into reliable software.

For candidates, the project offers an opportunity to combine modern application development with the challenges of enterprise migration. The work is particularly relevant to professionals who enjoy understanding complex systems, building reusable solutions, and delivering improvements within clearly defined business and technical constraints.

Tech stack:

.NET ASP.NET Core WebAPI REST TDD Docker Azure DevOps GenAI exposure (Claude Code, GitHub Copilot) AWS as nice to have

The technology stack includes C# and .NET for backend development, React and TypeScript for the frontend, and PostgreSQL for data storage.

Cloud infrastructure uses AWS and Terraform, with xUnit, Vitest, and Playwright supporting automated testing.

Your profile:

Practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery.

Work from the European Union region and a work permit are required.

Nice to have:

Experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work.

Interest in and familiarity with emerging AI-driven practices (e.g. agent-based workflows, automation patterns, AI-augmented development), with a willingness to explore and experiment beyond standard approaches.

Source: Poland and Middle-Eastern Europe careers (Greenhouse)

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