Software Engineer II

Job Description

At Zendesk, we’re on a mission to build the most advanced AI agents in CX.

The Testing team, part of AI Agents Advanced, is focused on ensuring the quality and reliability of our AI agents through synthetic testing, evaluation frameworks, and other validation approaches that help us ship with confidence.

As a Fullstack Engineer on this team, you’ll be instrumental in building the systems and tools that power synthetic testing, evaluation, and quality validation for our AI agents.

While this is a fullstack role, it leans more on backend development; we’re looking for someone who is passionate about APIs, event-driven systems, testing infrastructure, and data workflows, while also being comfortable crafting user-facing tools and owning delivery end-to-end.

You’ll 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.

What You Bring to the Role

• 3+ years of experience building modern web applications using Type Script, React, and Node. js.
• Familiarity with REST APIs, data fetching strategies, and integrating with external services.
• Write clean, modular, and tested code — valuing maintainability as much as speed.
• Experience working with design systems and component libraries, with a strong focus on performance, accessibility, and usability.
• Product‑mindful engineering; caring deeply about the end‑user experience and proactively contributing ideas to improve product outcomes.
• Excellent communication skills and a proactive mindset — collaborating well in cross‑functional teams, asking for help, and enabling others.
• A drive for continuous learning, reflection, and improvement — in both your own growth and your team’s success.
• A big plus if you are familiar with AWS and comfortable with CI/CD pipelines.
• Have a good understanding of microservice architecture, event‑driven systems, and basic database design (relational and No SQL).
• Have experience using AI agentic tools such as Cursor, Claude Code, and similar developer assistants.
• Have working knowledge of Python and experience using it in backend, automation, or data‑related tasks.
• How We Measure Success in This Role
• Consistently deliver well‑scoped, high‑quality features across the stack, with guidance from senior team members when needed.
• Contribute to the reliability, maintainability, and performance of our systems through clean code, thoughtful testing, and attention to detail.
• Collaborate effectively across disciplines (product, design, AI/ML, data) and actively participate in team discussions and planning.
• Demonstrate ownership by following through on tasks, communicating blockers, and proactively seeking feedback to improve your work.
• Show growth over time — deepening your technical skills, increasing your product understanding, and contributing more independently.
• Our Tech Stack
• Frontend: Type Script, React
• Backend: Node. js (ES7+), Type Script, Python, Mongo DB, Snowflake
• Infrastructure: AWS, Kubernetes, Terraform, Argo CD, Sentry, Redis, Datadog, Git Hub Actions

Zendesk believes in offering our people a fulfilling and inclusive experience.

We are an equal‑opportunity employer.

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.

Zendesk is an AA/EEO/Veterans/Disabled employer.

If you are based in the United States and would like more information about your EEO rights under the law, please click here.

Zendesk endeavors to make reasonable accommodations for applicants with disabilities and disabled veterans pursuant to applicable federal and state law.

If you are an individual with a disability and require a reasonable accommodation to submit this application, complete any pre‑employment testing, or otherwise participate in the employee selection process, please send an e‑mail to peopleandplaces@zendesk. com with your specific accommodation request.

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