Principal .NET Software Engineer - Remote - USA
About FullStack FullStack is one of the fastest-growing software consultancy companies in the Americas. We deliver transformational digital solutions to top global companies and Silicon Valley startups. As an employee-first company, we focus on hiring the most talented software designers and developers by creating a positive, respectful, and supportive work environment where they can achieve their greatest potential. We’re Most Proud Of
- Offering life-changing career opportunities to talented software professionals across the Americas.
- Building highly-skilled software development teams for hundreds of the world’s greatest companies.
- Having delivered hundreds of successful custom software solutions, which have positively impacted the lives and careers of millions of users.
- Our 4.2-star rating on GlassDoor.
- Our client Net Promoter Score of 68, twice the industry average.
The Position We're Looking To Hire a Principal .NET Software Engineer To Join Our Team. You'll Work With Our Incredible Clients In One Of Two Ways
- Team Augmentation: You will integrate directly into our client's team and work alongside their existing designers and engineers daily.
- Design & Build: You will work on a FullStack product team to build and deliver a product to our clients.
What We're Looking For
- 8+ years of professional software engineering experience.
- 3+ years of experience in technical leadership influencing architecture and engineering direction.
- Advanced English is required.
- Successful completion of a four-year college degree is required.
- Expert-level proficiency with C# and .NET framework.
- Hands-on experience with TypeScript/JavaScript.
- Proven experience working with mobile-first or progressive web app frameworks (React, Next.js, or similar).
- Strong experience building and scaling distributed systems in production.
- Proven experience with AWS.
- Solid experience with containerization tools such as Docker or Kubernetes.
- Deep knowledge of Infrastructure as Code (Terraform and Helm), CI/CD, and GitOps practices.
- Experience with SQL and NoSQL databases.
- Experience implementing event streaming solutions using Kafka or Kinesis.
- Strong understanding of microservices architecture and event-driven systems.
- Experience implementing secure authentication and authorization using OAuth/OIDC.
- Experience designing and maintaining APIs and service-to-service integrations.
- Experience implementing observability practices using tools such as Datadog, Prometheus, CloudWatch, or distributed tracing solutions.
- Strong background in testing strategies including Test-Driven Development (TDD), integration testing, and performance testing.
- Ability to work through new and difficult issues and contribute to libraries as needed.
- Ability to create and maintain continuous integration and delivery of applications.
- Forensic attention to detail.
- A positive mindset and a can-do attitude.
- Experience working on Agile/Scrum teams.
- Meaningful experience working on large, complex systems.
- Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon.
- Ability to identify with the goals of FullStack's clients and dedicate yourself to delivering on the commitments you and your team make to them.
- Ability to consistently work 40 hours per week.
Nice To Have We’re Seeking Engineers Who Are AI-enthusiastic In Their Workflow. Professional Experience Or Personal Project Work With The Following Is a Significant Plus
- Cursor, Windsurf, or Google Antigravity.
- Claude Code, Gemini CLI, Codex, or Copilot CLI.
What We Offer
- Competitive Salary.
- Paid Time Off (vacation, sick leave, parental leave, and holidays).
- 100% remote work.
- The ability to work with leading startups and Fortune 500 companies.
- Health, dental, and vision insurance.
- 401(k) w/ 4% match.
- Ample opportunity for career advancement.
- Continuing education opportunities.
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