Senior Software Engineer, Custom Software Development

avenit AG

. Clarify technical requirements with customer-side stakeholders .

Posted 11/11/2026full-timeRemote • GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in software development with a strong focus on C#/.NET and TypeScript/Node.js, alongside a solid understanding of software architecture and relational databases. Capable of translating business requirements into effective software designs while communicating technical decisions clearly in both German and English.

Highest-signal resume keywords

C#/.NET DevelopmentTypeScript/Node.js DevelopmentSoftware ArchitectureRelational Database ManagementClean Code Principles

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Applicant Tracking System Keywords

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Hard Skills

C#ASP.NETTypeScriptNode.jsVue.jsReactAngularPostgreSQLMicrosoft SQL ServerOracle

Soft Skills

Confident CommunicationTechnical Decision JustificationStakeholder Clarification

Tools & Technologies

Software Development ToolsCoding Agents

Certifications & Qualifications

Degree in Computer ScienceDegree in Information Technology

Industry Keywords

Software DevelopmentSoftware ArchitectureRelational DatabasesBusiness LogicCode Reviews

Tech Stack

Tools & technologies

AngularJavaJavaScriptMS SQL ServerNode.jsOraclePostgresReactSQLTypeScriptVue.js.NET

About the role

Key responsibilities & impact

Clarify technical requirements with customer-side stakeholders
Translate business rules and exceptional cases into robust software designs
Help shape the software architecture and component structure
Define integrations with existing systems
Implement architectural decisions directly in code
Develop business logic and interfaces using C#/.NET or TypeScript/Node.js
Develop web applications as well as native mobile and desktop applications
Design relational data models
Analyze the causes of slow database queries
Integrate new requirements into established codebases
Share expertise in code reviews and make technical decisions transparent and understandable

Requirements

What you’ll need

At least five years of professional software development experience
Degree in Computer Science, Information Technology, or a comparable qualification
Strong practical experience with C# and .NET or TypeScript and Node.js; experience with the respective other stack
Knowledge of Vue.js, React, or Angular is a plus
Experience with native mobile or desktop applications is a plus
Knowledge of Java is an advantage
Experience with software architecture and Clean Code principles
Ability to explain and justify the use of design patterns
Good knowledge of relational databases
Practical experience with PostgreSQL, Microsoft SQL Server, Oracle, or IBM DB2
Openness to modern development tools and agentic coding
Willingness to use coding agents selectively and critically evaluate their suggestions
Ability to explain technical decisions clearly to the team and customers
Confident communication skills in German and English

Benefits

Comp & perks

Structured onboarding with dedicated points of contact
Work from home within Germany or from our modern office in Offenburg
Licenses for Claude Code, Cursor, Copilot, and similar tools
Opportunities to try out new tools and models
Company pension scheme with a 20% employer contribution
Choice between a Hansefit membership and €50 per month via a Spendit Card
30 days of annual leave, plus Christmas Eve and New Year’s Eve off
Additional vacation days based on length of service
Public transport pass or JobRad bicycle leasing
Quarterly all-hands events, summer party, and Christmas party
Flat hierarchies and fast decision-making