Offerta di lavoro Senior .NET e React Software Developer - Polonia, Varsavia

Descrizione dell'annuncio di lavoro

DID S.r.l. is looking for an Advanced-level .NET / React Software Developer to maintain and evolve the document-authentication application used by border guards and return officers of a major EU Agency headquartered in Warsaw. Near-site engagement (within 2 hours by car of Warsaw), 12 months renewable up to 41 months, start as soon as possible.

AT A GLANCE

Position: Software Developer – Advanced level

Domain: Software development – .NET

End client: EU Agency, Digital Services Unit (document-authentication application, plus SharePoint/.NET applications)

Framework: EU framework contract for IT development and consultancy, Time & Means, Lot 1

Delivery mode: Near-site: you must live within 2 hours by car of Warsaw, Poland; the assigned location is the client HQ in Warsaw

Business travel: Not foreseen

Workload: Full time, 220 working days per year (normal working hours), no on-call or extended hours

Duration: 12 months initial contract, renewable for 12, 12 and 5 months (up to 41 months in total)

Application deadline: 24 October 2026 (the proposal goes to the client by 27 October 2026)

Start: As soon as possible (November 2026), replacing an outgoing developer

Security clearance: Not required

Engagement: Through DID S.r.l. as contractor; freelance (B2B) or other arrangement to be agreed

Compensation: EUR 450 per day

THE PROJECT

The Reference Manual is the Agency's document-authentication application: a .NET backend, a React SPA, an offline app, SQL Server and Azure DevOps pipelines. It is being upgraded by an external vendor into a new version, with production deployment in October–November 2026, content migration in November–December 2026 and go-live on 31 January 2027. The vendor's contract ends on 25 November 2026; from then on the Agency takes over third-level support. You will replace the client-side developer and also work on the IRMA 2.0 Access and Content Management module and related SharePoint/.NET applications.

WHAT YOU WILL DO – APPLICATION MAINTENANCE AND EVOLUTION

• Maintain and evolve the code base: change requests, bugs, technical debt and security findings.
• - Maintain the EU Login, SAML, Entra ID and identity integrations, the PDF components and the document-migration interfaces.
• - Review the vendor's deliverables (code, packages, documents) for acceptance.
• - From 25 November 2026, provide third-level support and maintenance of the new version in production.
• - Deliver change requests and fixes for IRMA 2.0 modules and related SharePoint/.NET applications.

WHAT YOU WILL DO – RELEASE, DESIGN AND KNOWLEDGE TRANSFER

• Support deployments to UAT, pre-production and production through the Change Advisory Board.
• - Contribute to technical design and code reviews.
• - Update technical design, deployment and operations manuals and onboarding material.
• - Coach the client's developers and hand over at the end of each period.

Competenze richieste

MANDATORY REQUIREMENTS

Every requirement below is checked against your CV and documents before the interview; missing any one of them means automatic rejection.

• Education: Bachelor's degree or higher (EQF level 6); an ICT degree is not mandatory. Proof: copy of diploma.
• - English: B2 (CEFR), also verified at interview. Proof: official, unexpired certificate (e.g. IELTS, TOEFL, Cambridge, TOEIC, EF SET) or assessment from a certified language centre.
• - IT professional experience: 6 years, non-overlapping periods. Proof: CV with dates (MM/YYYY), employer and role.
• - Experience as Software Developer: 3 years. Proof: CV with project list, dates and role.
• - Certifications: at least 1 advanced-level certificate in a software development technology domain (e.g. Microsoft), or an equivalent accepted by the client. Proof: copy of valid certificate.

NOT MANDATORY, BUT SCORED AT THE INTERVIEW AND STRONGLY VALUED

• .NET 8 / C#, Entity Framework, SQL Server, React/TypeScript, Azure DevOps Pipelines.
• - Windows/IIS deployment, Nutanix/OpenShift, Hangfire, ASP.NET Core Data Protection, certificates.
• - Checkmarx, static analysis and penetration-test remediation.
• - SAML 2.0 / Entra ID integrations, PDF and image-processing libraries.
• - Third-line support, CAB release management, taking over a code base from an external vendor.
• - Scrum, UML, technical leadership; SharePoint; experience with EU Institutions.

DOCUMENTS NEEDED

For the proposal: detailed CV in English (DID will transfer it into the client's Personnel Submission Form, which you sign); copy of your highest degree/diploma; copy of your English certificate or certified assessment; copies of your professional certifications; signed Statement of Intent; signed Statement of Compliancy to the Profile.

Before starting, if selected: criminal record excerpt issued less than 6 months earlier; signed Code of Conduct for Contractors and Consultant's Declaration; signed Acceptable Use Policy, including consent to data processing for monitoring purposes.