Software Engineer (Backend / System-Level — Microsoft Stack)

от 1000 до 5000 €

Требования

Системный инженер
Senior
C#
.NET
ASP.NET
Microsoft SQL Server
Windows Azure

Условия

Можно удалённо

Компания

Regional leader in providing turnkey in-house public safety and national security solutions

Описание вакансии

You will design, develop, and maintain backend and system-level components aligned with approved enterprise architecture, security standards, and governance frameworks. You'll deliver features that meet functional and non-functional requirements, follow secure coding practices, and integrate cleanly across our ecosystem: Azure, APIs, databases, and CI/CD pipelines.

You will operate within defined architectural boundaries and collaborate with Architects, Product Owners, QA, DevSecOps, and business stakeholders to ship high-quality, scalable, secure solutions.

Role Purpose

Design, build, and maintain backend/system-level components aligned with architectural standards.

About the project (stealth, but clear)

We're taking ownership of a large, mission-critical enterprise platform currently operated by an external vendor. The system is live and security-sensitive, and we're modernizing it over time:

  • Primary backend stack:  C# / .NET (6+) , with most new work on  .NET 8 (LTS)
  • Legacy areas exist:  ASP.NET Framework 4.8  and some  WCF
  • Cloud:  Microsoft Azure
  • Data:  SQL Server  primarily, some  MySQL
  • Frontend exists (React/Angular), but this role is  backend/system-level
  • Documentation is mixed due to the transition; part of the work is improving clarity as you go.

     

Core Responsibilities

1) Software Development & Implementation

  • Develop backend services, APIs, and system components based on approved backlog items and technical designs.
  • Translate user stories and functional requirements into scalable solutions.
  • Implement business logic following clean architecture and principles.
  • Follow coding standards, architectural guidelines, and agreed design patterns.

2) Code Quality & Maintainability

  • Write clean, maintainable, testable, well-documented code.
  • Perform peer reviews and address review feedback.
  • Refactor legacy code where needed to improve performance and maintainability.
  • Maintain strong version control discipline: branching strategy, pull requests, merges.

3) Testing & Quality Assurance

  • Develop and maintain unit tests using approved frameworks ( xUnit / NUnit / MSTest ).
  • Use mocking frameworks appropriately (eg, Moq/NSubstitute equivalents).
  • Participate in integration testing and support QA during testing cycles.
  • Meet quality gates (coverage/standards) before release.
  • Support debugging, root-cause analysis, and defect resolution.

4) Security & Compliance

  • Apply secure coding practices aligned with  OWASP Top 10 .
  • Identify and mitigate vulnerabilities; follow DevSecOps quality controls.
  • Correctly handle authentication, authorization, encryption, and data protection.
  • Implement RBAC and identity-based access patterns (JWT/OAuth2;  Entra ID  integration where applicable).
  • Comply with mandatory SAST scanning gates prior to release.

5) Performance & Reliability

  • Optimize database queries and system performance (SQL Server/MySQL).
  • Build scalable, resilient services and APIs.
  • Implement logging/monitoring/exception handling best practices (eg,  Application Insights, Serilog ).
  • Use performance profiling techniques when needed to diagnose bottlenecks.

6) DevOps & Deployment Support

  • Support CI/CD pipeline integration and delivery workflows ( Azure DevOps ).
  • Assist in staging and production deployments under governance checkpoints.
  • Participate in troubleshooting production incidents when required.

7) Cross-Functional Collaboration

  • Work closely with Solution Architects, Product Owners, QA, DevSecOps, and UI/UX teams.
  • Escalate technical risks and architectural concerns early and clearly.

Authority

  • Own implementation decisions  within  approved architectural boundaries.
  • Cannot  redefine scope or bypass architecture/security standards.
  • Must escalate technical risks, architectural concerns, or scope-impacting issues to the Architect and Product Owner.
  • Cannot  approve production deployment outside defined governance checkpoints.

Required Qualifications

Education

  • Bachelor's degree in Computer Science / Software Engineering / Information Systems (or similar).
  • A master's degree is a plus.

Experience

  • 5+ years  backend development experience.
  • Proven experience delivering  enterprise-grade applications .
  • Experience working in  Agile/Scrum  environments.
  • Experience with production-grade  Azure-hosted  applications.

Required Technical Stack

Core Technologies

  • C# / .NET Core / .NET 6+  (most new work on  .NET 8 LTS )
  • ASP.NET Core Web API
  • Entity Framework  and/or other ORM tools
  • SQL Server  (advanced querying and performance tuning mindset)

API & Integration

  • RESTful APIs
  • Data exchange:  JSON / XML
  • API auth:  JWT, OAuth2 , identity integration ( Entra ID )

Cloud & DevOps

  • Microsoft Azure  (App Services, Storage, Functions)
  • Azure DevOps  (CI/CD pipelines)
  • Git

Security

  • OWASP Top 10 awareness
  • Secure coding best practices
  • RBAC implementation patterns

Testing

  • xUnit / NUnit / MSTest
  • Mocking frameworks
  • Unit + integration testing practices

Technical Awareness

  • Microservices architecture basics
  • Logging/monitoring tools (Application Insights, Serilog, etc.)
  • Docker Basics (preferred)
  • CI/CD best practices
  • Performance profiling techniques

Core Competencies

Technical

  • Strong problem solving and analytical skills
  • Code optimization and debugging expertise
  • Understanding of system design principles
  • Secure development mindset

Behavioral

  • Accountability and ownership
  • Structured thinking
  • Attention to detail
  • Ability to work under pressure
  • Clear communication with technical and non-technical stakeholders
  • Continuous learning mindset

Maturity / Level Expectations

  • Lead technical modules and drive them to completion.
  • Mentor less experienced engineers when needed.
  • Participate in design discussions and contribute improvements.
  • Review critical code changes and uphold engineering standards.

Recommended Certifications (Nice-to-have)

  • AZ-204  (Azure Developer Associate)
  • AZ-900  (Azure Fundamentals)
  • Secure coding / OWASP training
  • Microsoft security certifications (optional)

Interview Process

  1. 20–30 min intro call
  2. Technical interview (system design + deep .NET/API/SQL + security mindset)
  3. Final discussion + proposal