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About the Role
As a Fullstack Engineer on the Testing team, you will be instrumental in building the systems and tools that power synthetic testing, evaluation, and quality validation for our AI agents. You will work closely with product managers, designers, data engineers, data analysts, and fellow developers to create seamless, intuitive experiences, combining rich data, intelligent systems, and responsive UIs. Your work will directly shape how our customers make informed and impactful decisions based on real-time, AI-powered insights.
Responsibilities
- Building systems and tools that power synthetic testing, evaluation, and quality validation for AI agents.
- Crafting user-facing tools and owning delivery end-to-end.
- Collaborating with product managers, designers, data engineers, data analysts, and fellow developers.
- Consistently delivering well-scoped, high-quality features across the stack.
- Contributing to the reliability, maintainability, and performance of systems through clean code, thoughtful testing, and attention to detail.
- Collaborating effectively across disciplines (product, design, AI/ML, data).
- Actively participating in team discussions and planning.
- Demonstrating ownership by following through on tasks, communicating blockers, and proactively seeking feedback.
- Showing growth over time by deepening technical skills, increasing product understanding, and contributing more independently.
Requirements
- 3+ years of experience building modern web applications using TypeScript, React, and Node.js.
- Familiarity with REST APIs, data fetching strategies, and integrating with external services.
- Writing clean, modular, and tested code.
- Valuing maintainability as much as speed.
- Experience working with design systems and component libraries.
- Strong focus on performance, accessibility, and usability.
- Being a product-minded engineer who cares deeply about the end-user experience and proactively contributes ideas.
- Excellent communication skills and a proactive mindset.
- Collaborating well in cross-functional teams.
- Not being afraid to ask for help and enjoying enabling others.
- A drive for continuous learning, reflection, and improvement.
Skills
- TypeScript
- React
- Node.js
- REST APIs
- Data fetching strategies
- Integrating with external services
- Design systems
- Component libraries
- Performance optimization
- Accessibility
- Usability
- AWS
- CI/CD pipelines
- Microservice architecture
- Event-driven systems
- Relational database design
- NoSQL database design
- Python
- AI agentic tools (e.g., Cursor, Claude Code)
Location
- Remote
Work Type
- Hybrid
- Full-time
Experience Level
- 3+ years of experience
About the Company
- Zendesk software was built to bring a sense of calm to the chaotic world of customer service.
- We power billions of conversations with brands you know and love.
- Zendesk believes in offering our people a fulfilling and inclusive experience.
- Our hybrid way of working enables us to purposefully come together in person to connect, collaborate and learn whilst also giving our people the flexibility to work remotely for part of the week.
- Zendesk is on a mission to simplify the complexity of business and make it easy for companies and customers to create connections.
- Our customer experience software unlocks the power of billions of interactions, enabling businesses to build rich, meaningful relationships with their customers.
- Our offices reflect the global cities we call home, and have spaces for collaboration, quiet, and events.
- With our hybrid approach, you’ll experience flexibility and connection, collaboration, and learning with your team.
Equal Opportunity
- Zendesk is an equal opportunity employer, and we’re proud of our ongoing efforts to foster global diversity, equity, & inclusion in the workplace.
- Individuals seeking employment and employees at Zendesk are considered without regard to race, color, religion, national origin, age, sex, gender, gender identity, gender expression, sexual orientation, marital status, medical condition, ancestry, disability, military or veteran status, or any other characteristic protected by applicable law.
- We are an AA/EEO/Veterans/Disabled employer.
- Zendesk endeavors to make reasonable accommodations for applicants with disabilities and disabled veterans pursuant to applicable federal and state law.