Senior Full Stack Engineer

Ready to be a Titan? As a Senior Full Stack Engineer at ServiceTitan, you will join our core engineering team to help improve our products and build new ones. This is an exciting role for a powerhouse engineer to lead major feature development in a rapidly growing company. We build for perfection, use the most modern tools on the Microsoft .NET platform, have an amazing culture, and love to solve complex problems. We know true "unicorns" who are absolute experts in *both* deep backend architecture and bleeding-edge frontend ecosystems are rare. We are looking for a world-class Backend Engineer who is frontend-capable. You will spend the majority of your time architecting robust backend systems, but you possess a true full-stack mindset. As an engineer who already leverages modern AI development workflows to accelerate your day-to-day coding, you will use those same toolsets to confidently navigate, understand, and contribute to our frontend React codebase. What you'll do: End-to-End Ownership: Architect, design, and implement user-facing features end-to-end, taking full ownership of the lifecycle. Collaborate & Prototype:Work with product managers, designers, and fellow engineers to prototype and implement product features. Balance Delivery & Leadership:Maintain a balance of 70% hands-on development and 30% working on requirements, mentorship, and supervision. Drive AI-Augmented Engineering: Operate our deeply integrated AI ecosystem and autonomous agents at a high level across the entire lifecycle—from backend architecture down to the frontend—continually refining prompts and outputs for peak engineering velocity. Communicate Effectively:Coordinate seamlessly with other engineers, product managers, customers, and partners. What you'll bring: 5+ years of industry experience in software engineering, with a strong emphasis on scalable backend systems. B.S., M.S., or PhD** in Computer Science, Physics, Engineering, or a related technical field. Expert-level knowledge of: The Microsoft .NET Stack: Deep expertise in C# / .NET, ASP.NET MVC, Web APIs, and relational databases (Microsoft SQL Server or similar). Core Engineering Principles:Strong understanding of MVC, Dependency Injection, ORM concepts, asynchronous programming, algorithms, and data structures. Testing & Tooling:Experience with Git, unit testing (server or client-side), debugging, profiling, Visual Studio, and JIRA. Strong foundational knowledge of: Frontend Core: Deep understanding of HTML5, CSS, TypeScript, and modern JavaScript (ES6+). Proficient in browser internals including the event loop, rendering pipeline, and network request lifecycle. Comfortable using browser DevTools for profiling, debugging, and performance analysis. Frontend Architecture:Strong conceptual understanding of modern single page application design, including component-driven UI, state management patterns, client-side routing, and performance optimization techniques such as lazy loading, code splitting, and efficient rendering. React & Ecosystem: Hands-on experience with React and reactive state management libraries such as MobX or Redux. Understanding of microfrontend architecture and cross-team frontend integration. Pragmatic & AI-Forward Workflow: You view advanced generative AI tools and engineering agents as an essential force multiplier. You know how to direct, validate, and leverage them to accelerate backend engineering, while using them as a bridge to seamlessly read, modify, and extend our React applications without friction.   Nice-to-haves: Experience with browser-based web storage APIs (localStorage, IndexedDB). Experience with a data-driven approach to product decisions (A/B testing).   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 condition), genetic information, protected military or veteran status, sexual orientation, or any other characteristic protected by applicable federal, state or local laws.