Software Developer (.NET)

Altherias; Warszawa; Remote; PLN 120,000 - 180,000; Full time

Job summary

Altherias is seeking a Software Developer (.NET) in Poland. The role is mainly remote with proximity to Warsaw for occasional travel. You will design, develop and optimize enterprise web apps on .NET Core / C#, work with React/TypeScript SPAs, and manage deployments via Azure DevOps Pipelines.

We value 6+ years IT experience (3+ in this role), UML design ability, and strong knowledge of data/business/UI layers. Experience with security, deployments, and third-line support is required.

Qualifications

• Proven development and support of enterprise web applications on .NET Core / 8 with C#.
• Experience with EF and SQL Server, and React/TypeScript SPAs.
• Experience deploying via Azure DevOps Pipelines and maintaining code quality.
• Know-how in Windows/IIS deployment and container platforms (Nutanix/OpenShift).
• Familiar with Hangfire, Data Protection, security tests and remediation.

Responsibilities

• Designs and develops the system end-to-end.
• Optimizes software for performance, security and quality.
• Produces technical documentation and estimates effort.
• Sets software development standards and explores technical solutions.
• Collects metrics and manages configurations and releases.
• Contributes to requirements analysis, testing and deployment.
• Tests solutions and develops testing tools; prototypes new ideas.
• Acts as 2nd/3rd line support and collaborates with external contractors.

Skills

Full lifecycle experience

Enterprise software systems

UML design

Layered architecture (UI/BL/DL) design

Scrum development

Education

Bachelor's degree or 3 years higher ed

Advanced software development certificate

Tools

Azure DevOps Pipelines

Windows/IIS deployment

Nutanix/OpenShift container platforms

Hangfire background jobs

ASP.NET Core Data Protection

Certificate management & security scanning

Job description

We are looking for a Software Developer (.NET) for a key client based in Poland.

This position is mainly remote, but candidates must be based within 2h by car from Warsaw.

• 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
• Propose 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

Knowledge and skills:

• Has gone at least 1 time through the complete lifecycle of the solution.
• Expert in developing enterprise level software systems.
• Knows UML and can design applications in UML.
• Proficient in designing and developing: data layer, business logic layer and UI layer.
• Worked in Scrum developments.

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.
• Minimum 6 years of professional IT experience, of which at least 3 years must be relevant to this role.

Certifications

• At least 1 advanced level certificate in software development (or equivalent).

Education

• Bachelor's degree or 3 years of higher education.