
Real job — pulled straight from NIX’s careers page · Verified October 8, 2026 · No reposts.
Job description
NIX is hiring a Full Stack Engineer — a full-time, based in Bulgaria role. Apply directly on NIX's careers page below.
Middle .NET Full Stack Engineer
Location: Bulgaria
Department: MITA team
We are looking for an experienced Software Engineer to join a dedicated team working on high-impact, enterprise-scale software solutions for public sector funding and financial management systems.
The candidate will work within a large-scale ecosystem comprising core transactional systems, reporting tools, and public application portals. You will play a key role in developing new features, integrating modern microservices, refactoring legacy components, and migrating services to modern technologies (.NET 6/8, modern web frameworks).
Key Responsibilities
- Systems Analysis & Architecture: Analyze requirements, extract business logic from legacy systems, and create modeling/visualization artifacts using UML standards.
- Full-Stack Development: Design, maintain, and expand back-end services and front-end portals using C#/.NET, REST APIs, and modern UI tools.
- Legacy Refactoring & Decoupling: Write anti-corruption layers and seams to safely isolate legacy code from new, modern application components.
- Data Access & Databases: Design and optimize database access structures using MSSQL, Entity Framework Core (Code-First), and the repository pattern.
- Testing & Quality Assurance: Create decoupled unit tests, write feature documentation, and conduct end-to-end (E2E) testing on newly built features.
- Agile Collaboration: Participate in daily stand-ups and Agile/Scrum ceremonies, managing code, documentation, and tasks via Azure DevOps.
Requirements
Education & Experience:
- Bachelor’s Degree in IT, Computer Science, or a related field (MQF Level 6 or equivalent).
- 3+ years of professional experience in software development and systems analysis.
- Practical experience working in Agile/Scrum environments using tools like Azure DevOps.
Technical Skills:
- Back-End & Frameworks: Strong proficiency in C#, .NET Framework 4.8, .NET 6/8, ASP.NET MVC, REST APIs, and Entity Framework Core.
- Front-End Development: Experience with HTML5, CSS, Bootstrap, AJAX, JavaScript, jQuery, JSON, OpenXML, and modern web frameworks (Angular, React, or Blazor).
- Databases: Strong knowledge and practical experience with MSSQL, Entity Framework (Code-First), and repository patterns.
- Architecture & Clean Code: Solid understanding of Object-Oriented Design (OOD), writing decoupled unit tests, and designing anti-corruption layers.
- Version Control & DevTools: Hands-on experience with Git/Azure Repositories and Browser Development Tools (DevTools).
We offer*:
- Flexible working format - remote, office-based or flexible
- A competitive salary and good compensation package
- Personalized career growth
- Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
- Active tech communities with regular knowledge sharing
- Education reimbursement
- Memorable anniversary presents
- Corporate events and team buildings
- Other location-specific benefits
*not applicable for freelancers
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Frequently asked questions
What skills are required for Full Stack Engineer at NIX?
The required skills for Full Stack Engineer at NIX include: C#, .NET, REST, HTML, CSS, Bootstrap, AJAX, JavaScript, jQuery, JSON, Angular, React, SQL Server, Git, Azure DevOps.
What is the seniority level for Full Stack Engineer at NIX?
Full Stack Engineer at NIX is a Mid Level level position.
How do I apply for Full Stack Engineer at NIX?
You can view the full description and apply for Full Stack Engineer at NIX on EchoJobs: https://echojobs.io/job/nix-middle-net-full-stack-engineer-g88uf.