Senior .NET Developer Job Description and Profile

An experienced Senior .NET Developer is sought to design, build and maintain robust, scalable business applications. Candidates who have strong object oriented design skills, proven delivery experience across the software development lifecycle and a track record of technical leadership should apply.

Senior .NET Developer Job Profile

The Senior .NET Developer will lead development initiatives within a software engineering team, providing technical direction, architectural input and hands-on implementation for backend services and application components. The role focuses on producing maintainable code, defining solution architecture and ensuring systems meet functional and non-functional requirements.

The postholder will work closely with product managers, testers and other engineers to translate requirements into reliable solutions, mentor mid and junior developers and contribute to continuous improvement of development practices and delivery processes.

Senior .NET Developer Job Description

The Senior .NET Developer is responsible for end-to-end delivery of .NET-based features and enhancements. This includes participating in requirement analysis, producing technical designs, implementing code, and ensuring quality through peer review and automated testing. The role requires regular engagement with stakeholders to clarify scope, provide estimations and identify technical risks.

Work is undertaken within an iterative delivery model and requires the ability to balance immediate delivery needs with longer term architecture and maintainability. The senior developer is expected to identify opportunities for optimisation, improve system reliability and drive adoption of best practice across the team.

In addition to individual contribution, the role involves mentoring, knowledge transfer and occasional technical leadership of small project workstreams. The Senior .NET Developer will champion code quality, documentation and observability to support operational readiness and ongoing supportability.

Senior .NET Developer: Duties and Responsibilities

• Design, develop and maintain backend services and application components using the .NET technology stack.
• Create and review technical designs, ensuring alignment with architectural principles and non-functional requirements.
• Write clean, testable, and efficient code following established coding standards and patterns.
• Lead code reviews and provide constructive feedback to improve quality and consistency.
• Implement and support automated unit and integration tests to validate functionality and prevent regressions.
• Collaborate with product owners and business analysts to clarify requirements and scope technical work.
• Identify performance bottlenecks and apply optimisation techniques to improve application responsiveness and scalability.
• Integrate applications with data stores and external services using well-defined APIs.
• Support release planning, build processes and deployment activities within established delivery pipelines.
• Troubleshoot production issues, perform root cause analysis and implement robust fixes.
• Mentor and coach junior developers, promote knowledge sharing and contribute to skill development.
• Maintain comprehensive technical documentation for designs, APIs and operational procedures.
• Ensure security and compliance considerations are addressed in design and implementation.
• Contribute to continuous improvement initiatives for development practices and team workflow.

Senior .NET Developer: Requirements and Qualifications

• Proven experience as a software developer with significant hands-on experience in .NET development.
• Strong proficiency in C# and object oriented design principles.
• Demonstrable experience in designing and consuming APIs and working with RESTful services.
• Good understanding of software architecture patterns, design patterns and system integration approaches.
• Experience with relational databases and competence in writing efficient queries and schema design.
• Familiarity with automated testing practices, test design and test automation strategies.
• Experience with build and deployment pipelines and an understanding of continuous integration and delivery concepts.
• Proven ability to diagnose and resolve production issues and to perform root cause analysis.
• Strong problem solving and analytical skills with attention to detail and quality.
• Excellent verbal and written communication skills and the ability to work effectively with stakeholders at all levels.
• Proven experience mentoring or leading other engineers and contributing to team development.
• Degree in computer science, software engineering or equivalent practical experience, or relevant professional certifications.
• Awareness of security best practice and data protection considerations in application development.