.NET Core Backend Engineer

Location: Fully Remote Department: Engineering Reports to: VP Development and Infrastructure About Us We are a fast-growing cybersecurity startup helping MSPs and mid-market organizations secure endpoints, enforce configuration compliance, and mitigate modern cyber threats at scale. Senteon is focused on delivering innovative solutions to secure critical business infrastructure. We prioritize a proactive security culture, operational excellence, and continuous innovation. The Role We’re looking for a .NET Core Developer with 3+ years of experience in controller-based API design, data management using an ORM, reactive web development, cross platform development on Windows, macOS and Fedora/CentOS/RHEL/Ubuntu who can hit the ground running and take ownership of core parts of our platform. You’ll work across the stack (primarily backend-focused), helping to plan, design, develop, ship and maintain infrastructure, platform features and client facing applications. This is a hands‑on role where you will be involved from beginning to end. What You’ll Do • Work in C# and .NET Core >=8 • Design and develop controller-based APIs using Fluent Builder workflows and Entity Framework ORM • Integrate API features with client facing web applications using Blazor WASM and Blazor Hybrid • Steward features from concept to production • Work with architects and designers to update, migrate, create and ship features • Improve performance, reliability, and scalability as we grow • Contribute to technical decisions and help shape our engineering practices • Move fast, iterate quickly, and continuously improve the codebase What We’re Looking For • 3+ years of experience with C# and .NET Core demonstrated by work history and a technical assessment and/or public code repositories with personal projects • Understanding of controller based, RESTful API patterns and efficient database interactions using Entity Framework • Working knowledge of identity providers and token-based session management • Comfortable working in a fast‑paced, ambiguous startup environment • Strong problem‑solving mindset and attention to detail Nice to Have • Experience in cross platform development • Experience with component based, reactive web development frameworks like Blazor, or ReactJS • Familiarity with Apache Kafka, SignalR and other distributed communication systems. • Experience with AWS, Azure or other cloud platforms • Experience with Docker or containerized workloads. How We Work • Fully remote, async-friendly team • High trust, low bureaucracy — you own your work • Small team, big impact — your contributions matter immediately • Iterate quickly, fail fast and learn as you go. Fast iteration cycles with real user feedback Physical Requirements This position classifies the physical exertion requirements as light physical effort in sedentary to light work, but which may involve some lifting, carrying, pushing and/or pulling of objects and materials of light weight (5-10 pounds). Tasks may involve extended periods of time at a keyboard or workstation. Some tasks require the ability to perceive and discriminate visual cues or signals. Some tasks require that ability to communicate orally. Essential functions are regularly performed without exposure to adverse environmental conditions. Compensation This position has a salary of: $100,000 to $130,000 annually Additional incentives may apply Benefits May include medical, dental, vision, 401(k), paid time off, and other programs. Equal Opportunity Employer Senteon is an Equal Opportunity Employer. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, age, genetic information, or pregnancy, or any other characteristic protected by law. Our policy of equal employment opportunity applies to all aspects of employment, including recruitment, hiring, promotions, transfers, discipline, terminations, wage and salary administration, benefits, and training. We are committed to fostering a fair and merit-based workplace where every employee feels valued and respected. Additional Information We do not consider salary history in hiring decisions. Applicants may request additional compensation details during the hiring process. We are required by law to provide equal employment opportunity to qualified people with disabilities. We also measure our progress toward having at least 7% of our workforce be individuals with disabilities. To do this, we must ask applicants and employees if they have a disability or have ever had a disability. Because a person may become disabled at any time, we ask all employees to update their information at least every five years. Identifying yourself as a person with a disability is voluntary, and we hope that you will choose to do so. Your answer will be kept confidential and not be viewed by anyone involved in personnel decisions. Completing the form will not negatively impact you in any way. For more information about these obligations, the U.S. Department of Labor’s Office of Federal Contract Compliance Programs is referenced.