Senior Full Stack Engineer

About the Role We’re looking for a Senior Full Stack Engineer to design and build scalable backend services and modern frontend applications for the Fleet Pro team. Fleet Pro powers real-time fleet operations, dispatch workflows, and high-impact operational systems where reliability and performance directly affect customers. In addition to feature development, this role includes ownership of quality standards, maintaining and improving our automated testing setup and contributing to a strong QA culture. What You’ll Do Design and implement scalable backend services with .NET/C# or another OOP language Build modern frontend applications in TypeScript Develop and maintain APIs for real-time operational workflows Participate in system design discussions (scalability, fault tolerance, performance) Improve reliability and performance of distributed systems Own quality for your features, including unit, integration, API, and E2E testing Write clean, maintainable, and well-tested code Be familiar with modern AI-assisted development tools (e.g., Claude Code, Cursor) and reusable agent workflows to improve productivity and code quality What You’ll Need 5+ years of professional software engineering experience Strong proficiency in TypeScript, with experience in C# or another object-oriented programming language highly preferred. Experience building scalable backend systems and REST APIs Solid understanding of distributed systems fundamentals Experience with SQL and CI/CD workflows Strong debugging and troubleshooting skills Comfort using AI-assisted development tools responsibly Nice to Have Experience with load testing or performance optimization Experience with API or E2E testing frameworks (e.g., Cypress) Familiarity with Azure or other cloud platforms Experience in fleet, logistics, or operational systems When you will work: Mon-Fri Flexible (Armenia) Be Human With Us: Being human isn’t about checking every box on a list. It’s about the experiences we have, people we meet, and the perspectives we share. So, if you have the skills but are hesitant to apply because of your background, apply anyway. We need amazing people like you to help us challenge the conventional and think differently about the problems that we’re solving. We’re in this together. Come be human, with us. Use of AI Technology: We use technology, including automated and AI-assisted tools, to support certain aspects of our recruitment process. These tools are designed to improve efficiency and enhance the candidate experience. AI tools are not used to make hiring decisions; all hiring decisions are made by our hiring teams. What We Offer: When you join our team, you’re not just accepting a job. You’re making a career move. Here’s how we’ll support you in doing some of the most impactful work of your career: Flextime, recognition, and support for autonomous work: Flexible time off with ample learning and development opportunities to continue growing your career. We offer a comprehensive onboarding program, leadership training for Titans at all levels, and other programs and events. Great work is rewarded through Bonusly, peer-nominated awards, and more. Holistic health and wellness benefits: Company-paid medical, dental, and vision (available to employees and their dependents day 1), parent and siblings’ insurance, wellness benefit, office massage, etc. Support for Titans at all stages of life: Parental leave and support, financial planning tools, Employee Assistance Program services, and more. At ServiceTitan, we celebrate individuality and uniqueness. We believe that the convergence of fresh perspectives and experiences from all walks of life is what makes our product and culture so great. We strongly encourage people from underrepresented groups to apply. We do not discriminate against employees based on race, color, religion, sex, national origin, gender identity or expression, age, disability, pregnancy (including childbirth, breastfeeding, or related medical condi ... (truncated, view full listing at source)