Senior .NET Developer

SUMMARY OF RESPONSIBILITIES

FirstKey Homes is hiring a Senior .NET Developer to help lead the development of new and existing custom applications that support critical internal operations. This is a hands-on role using modern Microsoft technologies hosted in Azure. You’ll work closely with the Director of Engineering and global development teams to architect, build, and maintain scalable applications in a collaborative and fast-moving environment.

This role is ideal for a senior developer who enjoys technical ownership, clean code, and contributing to a growing engineering practice.

ESSENTIAL DUTIES

· Design and Build Applications: Lead backend development for custom internal applications using .NET, C#, and SQL Server.

· Own Application Codebases: Collaborate with the Director of Engineering to manage and improve the code quality, scalability, and performance of core systems.

· Implement APIs and Integrations: Develop and maintain APIs, services, and data layers (REST/gRPC, EF Core).

· Lead by Example: Contribute high-quality code, perform code reviews, and help enforce clean architecture and SOLID principles.

· Collaborate Across Functions: Work closely with Product Managers and QA to understand requirements, estimate effort, and deliver features.

· Coordinate Globally: Align with offshore teams, support collaboration across time zones, and ensure delivery consistency.

· Support Deployment and Testing: Participate in CI/CD workflows, write unit/integration tests, and support release processes.

· Drive Improvement: Identify technical debt, propose solutions, and help advance our engineering standards and toolsets.

· To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

REQUIRED EDUCATION AND EXPERIENCE

· Bachelor’s degree in Computer Science or related field preferred

· High School Diploma or equivalence required

· 5-8+ years of backend development experience with .NET technologies

· Strong C# skills and experience with .NET Core / .NET 6+

· Expertise with SQL Server, T-SQL, stored procedures, and query optimization

· Hands-on experience with Entity Framework / EF Core, LINQ

· Experience designing and consuming RESTful APIs (gRPC or GraphQL is a plus)

· Understanding of microservices architecture, message brokers (e.g., RabbitMQ, Kafka)

· Experience with unit testing, integration testing (e.g., xUnit, NUnit, Moq)

· Experience with cloud platforms (Azure)

· Solid understanding of object-oriented design, design patterns, and SOLID principles

· Prior experience designing, building, and maintaining large-scale distributed systems

· Familiarity with CI/CD pipelines, Git, DevOps practices

· Good grasp of asynchronous programming and multithreading

NICE TO HAVE

· Experience working with distributed/offshore development teams

· Familiarity with NoSQL databases (e.g., MongoDB, Redis, Cosmos DB)

· Exposure to frontend integration and full-stack workflows (optional, but helpful)

WORKING CONDITIONS

· Fully remote (U.S.-based only)

· Collaboration with global (offshore) engineering teams

· Occasional meetings across time zones

· Primarily indoor/computer-based work

REQUIRED KNOWLEDGE

· Computers— Knowledge of computer hardware and software, including applications and programming.

REQUIRED SKILLS

· Programming — Writing computer programs for various purposes.

· Systems Analysis — Determining how a system should work and how changes in conditions, operations, and the environment will affect outcomes.

· Systems Evaluation — Identifying measures or indicators of system performance and the actions needed to improve or correct performance, relative to the goals of the system.

· Complex Problem Solving — Identifying complex problems and reviewing related information to develop and evaluate options and implement solutions.

· Critical Thinking — Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems.

· Active Listening — Giving full attention to what other people are saying, taking time to understand the points being made, asking questions as appropriate, and not interrupting at inappropriate times.

· Monitoring — Monitoring/Assessing performance of yourself, other individuals, or organizations to make improvements or take corrective action.

· Speaking — Talking to others to convey information effectively.

· Writing — Communicating effectively in writing as appropriate for the needs of the audience

WORK STYLES & BEHAVIORS

· Analytical Thinking — Job requires analyzing information and using logic to address work-related issues and problems.

· Attention to Detail — Job requires being careful about detail and thorough in completing work tasks.

· Innovation — Job requires creativity and alternative thinking to develop new ideas for and answers to work-related problems.

· Achievement/Effort — Job requires establishing and maintaining personally challenging achievement goals and exerting effort toward mastering tasks.

· Persistence — Job requires persistence in the face of obstacles.

· Cooperation — Job requires being pleasant with others on the job and displaying a good-natured, cooperative attitude.

· Adaptability/Flexibility — Job requires being open to change (positive or negative) and to considerable variety in the workplace.

FirstKey Homes is an equal opportunity employer and will not tolerate discrimination in employment on the basis of race, color, age, sex, sexual orientation, gender identity or expression, religion, disability, ethnicity, national origin, marital status, veteran status, genetic information or any other legally protected classification or status.

By applying to this position you are consenting to receive follow-up communication.