Senior.NET Developer

About the Position

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 are currently seeking a Senior .NET Developer for a REMOTE position in Bulgaria. This role focuses on migrating and modernizing a business-critical enterprise platform for an international company in the rail transportation and asset-leasing sector.

Responsibilities

• 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.

Requirements

• 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.

Tech Stack

• Backend: C#,.NET
• Frontend: React, TypeScript
• Database: PostgreSQL
• Cloud Infrastructure: AWS, Terraform
• Automated Testing: xUnit, Vitest, Playwright

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.

We Offer

• Opportunity to combine modern application development with the challenges of enterprise migration.
• Work 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.

About the Company

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.