Senior Software Developer (m/w/d) - C# / .Net

alphacoders
Frankfurt am Main Full-time Software Development Posted May 29, 2026 Expires June 28, 2026
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About This Role

Gemeinsam mit unserem Partner, einem weltweit agierenden Spezialisten für digitale Transformationslösungen im globalen Gesundheitsmarkt, suchen wir einen Senior Software Developer (m/w/d) - C# / .Net im Großraum Frankfurt am Main.

Werde Teil eines Teams, das komplexe Softwarelösungen kontinuierlich weiterentwickelt und gezielt in Richtung moderner, stabiler und skalierbarer Microservice-Architekturen ausbaut. In einem dynamischen Umfeld hast Du die Möglichkeit moderne Architekturansätze voranzutreiben und gemeinsam mit dem Team komplexe Softwarelösungen zu entwickeln.

Als Senior Software Developer übernimmst Du eine zentrale Rolle bei der Konzeption moderner Softwarearchitekturen im .NET-Ökosystem und verantwortest die Umsetzung komplexer Lösungen unter Einhaltung von modernen Code Prinzipien.

Aufgaben

    • Backend- & API-Entwicklung: Du entwickelst moderne Softwarelösungen mit C# und .NET Core / .NET 10 und arbeitest an performanten REST-APIs innerhalb serviceorientierter Architekturen und Microservice-Landschaften.
    • Enterprise-Software & Produktentwicklung: Du arbeitest an langfristig entwickelten Enterprise-Produkten in einer komplexen und hochregulierten Domäne und unterstützt aktiv die Modernisierung bestehender Softwarelandschaften.
    • Codequalität & Engineering Excellence: Du stellst eine hohe Softwarequalität durch Clean Code, SOLID-Prinzipien, Testing und Code Reviews sicher und bringst aktiv neue Ideen, Best Practices und technische Verbesserungen ins Team ein.
    • Technisches Sparring & Zusammenarbeit: Du arbeitest eng mit anderen Senior Engineers zusammen, diskutierst technische Problemstellungen und bringst Dich aktiv bei Architektur- und Designentscheidungen ein.

Qualifikation

    • Erfahrung: Du verfügst über fundierte Praxis in der Softwareentwicklung und hast bereits komplexe, verteilte Systeme im .NET-Umfeld erfolgreich mitgestaltet. Idealerweise konntest du bereits wertvolle Erfahrung mit modernen Deployment-Strukturen wie Containern und CI/CD-Prozessen sammeln.
    • Tech-Stack: Du bringst Tiefgehende Kenntnisse in C#/.NET Core (.NET 10) für REST-APIs und Microservices mit. Sicherer Umgang mit relationalen Datenbanken (MS SQL, Oracle, PostgreSQL) sowie ein starkes Fundament in Clean Code und SOLID-Prinzipien.
    • Methodik: Ein sicherer Umgang mit agilen Methoden wie Scrum, sowie Code Reviews und Testing zur Qualitätssicherung. Ausgeprägte Lernbereitschaft und Freude an technischem Mentoring
    • Persönlichkeit: Du bist ein neugieriger Entwickler mit technischem Tiefgang und echter Coding-Leidenschaft. Eine strukturierte Arbeitsweise, schnelle Auffassungsgabe und ein hoher eigener Qualitätsanspruch zeichnen dich aus. Außerdem vefügst du über fließende Deutsch- und Englischkenntnisse.

Benefits

    • Flexibilität: Ausgeprägte Remote-Kultur und flexible Arbeitszeiten
    • Zeit für Erholung: 30 Tage Urlaub, die sich mit zunehmender Dauer deiner Betriebszugehörigkeit erhöhen.
    • Exklusive Mehrwerte: Attraktive Corporate Benefits und ein firmeneigenes Bonussystem, das dein Engagement direkt belohnt.
    • Gezielte Talentförderung: Persönliches und fachliches Wachstum durch individuell zugeschnittene Weiterbildungsprogramme.
    • Nachhaltige Mobilität: Kostenlose Parkplätzen, E-Ladesäulen direkt vor der Tür und ein attraktives Company Bike Leasing.
    • Gelebter Teamspirit: Regelmäßige Team- und Firmenevents.Ganzheitliches Wohlbefinden: Modernes Work-Café und Inhouse-Yoga für eine optimale Balance zwischen Fokus und Regeneration im Arbeitsalltag.

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Wir freuen uns darauf, Dich kennenzulernen!

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Position Details

    • Job Title: Senior Software Developer (m/w/d) - C# / .Net
    • Company / Organisation: alphacoders
    • Location: Frankfurt am Main
    • Employment Type: Full-time
    • Field / Industry: Software Development
    • Work Arrangement: On-site or hybrid - Frankfurt am Main

About This Opportunity

This full-time opportunity at alphacoders is an excellent opening for experienced professionals in the field of software engineering and technology. The role is structured around an on-site or hybrid environment based in Frankfurt am Main and is designed for candidates who are ready to make a meaningful contribution from the moment they join.

Based in Frankfurt am Main, this role offers the opportunity to collaborate closely with a local team in a structured professional environment. Candidates currently based in the area or open to relocation are strongly encouraged to apply.

Whether you are an established practitioner in software engineering and technology or a highly skilled professional looking for your next challenge, this Senior Software Developer (m/w/d) - C# / .Net role offers the platform to apply your expertise in a real-world, results-oriented environment. alphacoders is looking for a candidate who can hit the ground running and add genuine value to the team.

Who Should Apply

This role is ideal for candidates who have a solid background in software engineering and technology and a demonstrable track record of delivering high-quality results. You should possess analytical thinking, attention to technical detail, and a methodical approach to problem-solving. Experience working with modern development tools, version control systems, and cloud platforms will be an advantage, though a commitment to continuous learning and professional development is equally valued.

Beyond technical or domain expertise, alphacoders is looking for someone who communicates clearly, collaborates effectively with colleagues and stakeholders, and takes ownership of their work from start to finish. If you thrive in a professional environment and are passionate about the opportunity to build reliable, scalable, and high-performing digital products, we encourage you to apply.

Key Competencies for This Role

Successful candidates for the Senior Software Developer (m/w/d) - C# / .Net position at alphacoders will typically demonstrate the following core competencies:

    • Domain expertise - a strong foundation of knowledge and hands-on experience in software engineering and technology
    • Problem-solving ability - the capacity to identify challenges, think critically, and implement practical solutions efficiently
    • Communication skills - clear and professional communication with colleagues, stakeholders, and partners at all levels
    • Self-management - strong time management and the ability to prioritise a varied workload while meeting deadlines
    • Team collaboration - a collaborative and supportive approach to working alongside colleagues across departments or locations
    • Adaptability - the ability to respond positively to change and thrive in a dynamic, evolving work environment

How to Apply

To apply for this Senior Software Developer (m/w/d) - C# / .Net position at alphacoders, click the "Apply Now" button on this page. You will be taken directly to the official application page where you can complete and submit your application.

Before applying, please ensure that your CV or résumé is fully up to date and clearly highlights your experience and accomplishments in software engineering and technology. If a cover letter is included or requested, tailor it specifically to this role and explain how your background, skills, and goals align with what alphacoders is looking for in a Senior Software Developer (m/w/d) - C# / .Net.

All applications for this role are processed directly by alphacoders. Career Nest facilitates the job discovery process and does not pre-screen or forward applications on behalf of employers. There are no fees for job seekers at any stage of the application process.

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