C# .NET Core Architect

At Solution Street, our employees have many opportunities to work on interesting, challenging projects supporting clients one-on-one in various domains primarily in the commercial space. Our company culture thrives on our five core values: Honesty, Respect, Transparency, Dependability, and FUN! They're embedded in everything we do and how we do it!

We are seeking an experienced C# .NET Core Architect for a modernization project. In this role, you’ll work on designing, developing, and delivering critical product features in a fast-paced, agile environment. You'll also serve as a technical leader—guiding junior developers, ensuring best practices, and helping the team overcome obstacles to maintain development velocity.

This position requires deep expertise in full-stack .NET development, modern JavaScript frameworks, secure API design, and cloud deployments. If you enjoy solving complex problems, mentoring others, and building scalable software from the ground up.

What You'll Do

• Design, develop, and unit test robust .NET Core/C# backend and frontend features.

• Lead code reviews and collaborate on architectural decisions.

• Guide and mentor junior developers on coding best practices and design patterns.

• Evaluate third-party libraries, tools, and frameworks for integration.

• Implement and monitor application performance, scalability, and security.

• Collaborate with the other senior members of the team to ensure timely and accurate delivery of features.

• Help to improve engineering processes and application performance through thoughtful enhancements.

• Support releases and deployments, including production troubleshooting and alerting.

What We're Looking For

Required Skills & Experience

• 8+ years of full-stack software development experience.

• Expert-level proficiency with .NET Core, C#, and SQL Server.

• Experience with Entity Framework, Dapper, or similar ORMs.

• Strong frontend experience using Angular or comparable modern JS frameworks.

• Proven ability to design and secure RESTful APIs (JWT, OAuth).

• Solid knowledge of cloud development, preferably AWS.

• Experience integrating with third-party APIs and using message queues.

• Background in application security, performance tuning, and scalability.

• Familiarity with Agile Scrum methodologies.

• Excellent communication, collaboration, and mentorship skills.

Preferred Qualifications

• Prior experience with modernization projects.
• AWS certifications (Developer or Solutions Architect).

Why Join Us?

• Collaborate with a talented, experienced team of developers and technical leaders.

• Enjoy flexibility with a remote-friendly environment.

• Influence architectural decisions and product direction.

About Solution Street

Solution Street, a software engineering firm, was founded by a software developer who envisioned a safe haven for software engineers who wanted to work on interesting, fun projects. Since 2002, we’ve stuck by this principle and as a result, we’ve developed long, lasting relationships with our clients and have a team of great developers who love what they do.

We enjoy working with cutting edge technologies and providing solutions to complex business problems. Our employees are experts in building large, highly scalable and well performing web applications using many technologies. We are Microsoft and AWS partners.

At Solution Street we value all employees and job candidates as unique individuals, and we welcome the variety of experiences they bring to our organization. As such, we have a strict non-discrimination policy. We believe everyone should be treated equally regardless of race, sex, gender identification, sexual orientation, national origin, native language, religion, age, disability, marital status, citizenship, genetic information, pregnancy, or any other characteristic protected by law.

What's In It for You?

Depending on the position and the candidate’s location, not all roles are available for W-2 employment. In some cases, we may consider engagement through a 1099 contractor arrangement. We offer a relaxed, fun, flexible, working environment with competitive salary + bonus + 100% paid health/dental to employee + life insurance + PTO + long-term and short-term disability + 401(k). Solution Street automatically contributes to employees' 401(k) plans. We are passionate about technology and we share our thoughts and discoveries in our monthly newsletters. To subscribe to our latest blog, please visit: . Solution Street is also a sponsor of NOVA SART (Northern Virginia Software Architecture Round Table Group). Please visit or check out our Face page for more information regarding our company culture, the charities we support, and the fun events we do together!