Senior .NET Engineer - Cloud-Native & Legacy App Expert

Spyro Soft; Poland; Hybrid; PLN 90,000 - 130,000; Full time

Job summary

Spyro Soft is seeking a seasoned .NET professional to join a high‑impact team that maintains a legacy platform while simultaneously building a brand‑new, cloud‑native application. The project is a full‑stack, enterprise‑grade solution that processes large volumes of business documents (PDF, Word) and integrates with a variety of internal and external services.

You will collaborate across distributed teams, optimize performance, and translate business needs into robust technical designs while

Qualifications

• Experience in performance, load, and scalability analysis.
• Onboarding into complex applications (reverse engineering).
• Excellent communication with both the business side and the development team.
• Confidence and the ability to make decisions.
• Ability to conduct technical discussions with the client and translate complex topics into simple terms.
• High collaborative culture and a strong team‑oriented mindset.
• Proactivity and taking ownership of the assigned area.
• Ability to work in an international and distributed environment.
• Pragmatic problem‑solving approach – focusing on finding solutions rather than over‑complicating issues.
• Good work organization and the ability to prioritize tasks and problems.
• Openness to feedback and constructive discussion.
• Ability to work in an Agile environment (Scrum, SAFe) with a practical attitude toward frameworks, without dogmatic adherence to processes.
• Sense of urgency – concentrating on the most important business and technical problems.

Responsibilities

• Maintain a legacy platform while building a new cloud‑native application.
• Develop a full‑stack, enterprise‑grade solution that processes large volumes of documents (PDF, Word).
• Integrate with internal and external services.

Skills

Azure

REST APIs

Agile/Scrum

Communication

Teamwork

Proactivity

Client discussions

Reverse engineering

Performance analysis

English fluency

Tools

DevExpress OfficeFileApi

Blazor

Job description

Spyro Soft is seeking a seasoned .NET professional to join a high‑impact team that maintains a legacy platform while simultaneously building a brand‑new, cloud‑native application. The project is a full‑stack, enterprise‑grade solution that processes large volumes of business documents (PDF, Word) and integrates with a variety of internal and external services.

You will collaborate across distributed teams, optimize performance, and translate business needs into robust technical designs while