Senior .NET Software Engineer

Arhs Group; Warszawa; Hybrid; PLN 240,000 - 320,000; Full time

Job summary

Arηs Group in Warsaw, Poland, is seeking an experienced software professional to design, develop and optimize enterprise solutions. You will work across the full stack, contribute to architecture, and lead technical initiatives in a collaborative agile environment.

You will document solutions, estimate effort, set coding standards, and support deployments. The role requires English at B2 level, a bachelor’s degree, and at least six years in IT with strong UML, Scrum, and leadership skills.

Qualifications

• Bachelor's degree and 6+ years IT experience.
• English language at least B2 level.
• Minimum 3 years of project experience relevant to the profile.

Responsibilities

• Designs and develops the system.
• Optimizes software for performance, security and quality.
• Produces technical documentation.
• Estimates effort and time for development.
• Sets software development standards.
• Proposes technical solutions for business needs.
• Collects and interprets software metrics.
• Manages configuration and releases.
• Contributes to requirements analysis, testing and deployment.
• Tests solutions and develops testing tools.
• Prototypes solutions.
• Acts as 2nd and 3rd line support.

Skills

Enterprise software development

UML design

Scrum

Team leadership

Documentation

Problem solving

Requirements analysis

Education

Bachelor's degree

Tools

C#

Entity Framework

SQL Server

React/TypeScript

Azure DevOps Pipelines

ASP.NET Core

OpenShift / container platforms

Nutanix

Hangfire

Checkmarx / security testing

Job description

Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development. Arηs Group was acquired by Accenture in July 2024.

Job Description

• Designs and develops the system
• Optimizes software from performance, security and quality points of view
• Produces technical documentation
• Estimates effort and time for development
• Sets software development standards
• Proposes technical solutions for business needs and technical problems
• Collects and interprets software metrics
• Manages configuration and releases
• Contributes to requirements analysis, testing, quality assurance, change management, deployment
• Tests solutions and develops testing tools
• Prototypes solutions
• Acts as 2nd and 3rd line support

Qualifications

Mandatory:

• Bachelor's degree plus 6years of IT relevant professional experience
• Minimum English language skills at the Level B2
• Minimum 3years project experience relevant to the profile or at similar position

Required Certificates (At least 1 certification among:

• Advanced level certificate in software development technology domain
• or an equivalent certification recognized internationally (subject to acceptance as a valid credential by the Contracting Authority)

Knowledge and Skills

• Has gone at least 1 time through the complete lifecycle of the solution
• Expert in developing enterprise level software systems in specified technology domain
• Knows UML and can design applications in UML
• Proficient in designing and developing: data layer, business logic layer and UI layer
• Worked in Scrum development
• Is capable for leading technical teams
• Holds ability to document effectively technical solutions
• Presents problem solving skills

Specific Requirements

• Proven development and support of enterprise web applications on .NET (Core / 8) with C#, Entity Framework and SQL Server, and of React/Typescript single-page applications, including build and deployment through Azure DevOps Pipelines
• Hands-on experience with deployment and operation of applications on Windows/IIS and container or virtualised platforms (Nutanix / OpenShift), background-job frameworks (e.g. Hangfire), ASP.NET Core Data Protection and certificate management, and with security-scan (Checkmarx) and penetration-test remediation
• Experience integrating applications with SAML 2.0 / Entra ID, PDF and image-processing libraries and document-management interfaces, and with taking over a code base delivered by an external contractor (code review, technical-debt management, third-line support)
• Experience supporting production systems in a large organization context (release management through a Change Advisory Board, UAT support, incident analysis) and readiness to work alongside a 3rd party development contractor during its third-level-support period