Senior Software Developer – C#, .NET

alphacoders

Senior Software Developer creating modern software solutions with C# and .NET, working in a hybrid environment. Collaborating with other engineers to drive architecture and code quality best practices.

Posted 6/12/2026full-timeFrankfurt am Main • 🇩🇪 GermanySenior💰 €70,000 - €90,000 per yearWebsite

Tech Stack

Tools & technologies

Microservices.NETOraclePostgresSQL

About the role

Key responsibilities & impact

Develop modern software solutions using C# and .NET Core / .NET 10
Work on high-performance REST APIs within service-oriented architectures and microservice landscapes
Support the modernization of existing software ecosystems
Ensure high software quality through Clean Code, SOLID principles, testing, and code reviews
Collaborate closely with other senior engineers on architecture and design decisions

Requirements

What you’ll need

Proven practical experience in software development and experience with complex, distributed systems in the .NET ecosystem
Deep knowledge of C#/.NET Core (.NET 10) for building REST APIs and microservices
Confident experience with relational databases (MS SQL, Oracle, PostgreSQL)
Comfortable with agile methodologies such as Scrum, as well as code reviews and testing
Strong willingness to learn and enthusiasm for technical mentoring
Fluent in German and English

Benefits

Comp & perks

Strong remote-first culture and flexible working hours
30 days of vacation, increasing with length of service
Attractive corporate benefits and a company-wide bonus system that directly rewards your commitment
Personal and professional growth through tailored training programs
Free parking, EV charging stations directly on site, and an attractive company bike leasing scheme
Modern work café and in-house yoga for an optimal balance between focus and recovery during the workday

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

C#.NET Core.NET 10REST APIsmicroservicesClean CodeSOLID principlestestingcode reviewsrelational databases

Soft Skills

technical mentoringwillingness to learncollaboration