We are looking for a highly skilled outsourced development team to support and enhance a large, business-critical application built on .NET Framework 4.8. The system relies on numerous third-party libraries—some of which require updates or replacements to ensure security, stability, and long-term maintainability. The application also uses ServiceStack for API delivery and integrates with a high-volume SQL Server backend.
RequirementsOverview
We are looking for a highly experienced .NET Lead to join our team and provide technical leadership for a large, business-critical platform built on .NET Framework 4.8. Our application relies on numerous third-party libraries and exposes APIs using ServiceStack. We are entering a strategic phase focused on performance optimization, modernization, technical improvements, and ongoing support.
This role requires deep technical expertise, strong architectural thinking, and hands-on experience maintaining and scaling enterprise applications.
Key Responsibilities- Lead maintenance and enhancement of a large, mission-critical .NET application.
- Drive performance optimization efforts across multiple functional areas.
- Refactor, upgrade, or replace outdated or vulnerable third-party libraries to improve security and maintainability.
- Contribute to modernization initiatives, helping steer the long-term technical evolution of the system.
- Support and enhance a large SQL Server backend, including:
- Tables containing billions of rows
- Query optimization
- Ensuring stability and high performance under heavy load
- Collaborate closely with internal technical leadership to:
- Address defects
- Implement incremental improvements
- Ensure architectural alignment and code quality
- Provide mentorship and guidance to developers within the team.
- 7+ years of professional experience with .NET Framework (including 4.8).
- Strong expertise in C#, object-oriented design, and enterprise application development.
- Hands-on experience working with ServiceStack or similar API frameworks.
- Proven track record optimizing SQL Server queries and working with extremely large datasets.
- Experience refactoring legacy code and modernizing existing systems.
- Ability to take ownership of complex technical challenges and drive solutions.
- Strong communication, documentation, and collaboration skills.
- Experience transitioning legacy applications toward modern .NET versions (.NET 6/7/8+).
- Familiarity with CI/CD pipelines, automated testing, and DevOps practices.
- Background leading or mentoring development teams.
Benefits
- Chance to take charge and shape a vital application critical to the business.
- Partnership with a skilled team of technical leaders.
- Long-term involvement in meaningful and challenging engineering projects.
- Remote work flexibility.
Top Skills
What We Do
At BolderApps, we believe in the power of creativity and strategy to transform brands. our vision is to push boundaries, challenge norms, and craft digital experiences that leave a lasting impact.
Our mission is to create meaningful connections between brands and their audiences, ensuring every project inspires, engages, and fuels long-term growth. with a commitment to excellence and a passion for innovation.
