Senior Backend Software Engineer (Ruby on Rails)

We’re UserTesting—the leader in human insight. Our mission is to help organizations craft exceptional customer experiences through fast, actionable feedback.

We empower teams to build the best products and experiences by embedding real human perspectives into every stage of the development process—from ideation to launch. With the world’s strongest participant network, AI-powered analysis, expert services, and seamless integrations, we help companies eliminate guesswork, align stakeholders, and bring customer needs into sharp focus.

Trusted by more than 3,000 organizations worldwide—including 75 of the Fortune 100—UserTesting delivers measurable business outcomes, reduces risk, and helps teams deliver with confidence. Joining our team means being part of a passionate group focused on transforming how companies understand and connect with their customers.

Let’s build experiences people love—together.

The Opportunity

We’re looking for a Senior Backend Engineer to join our Engineering team. This role is ideal for someone who thrives in a pragmatic environment—able to reduce scope smartly, mentor others, and design efficient, maintainable solutions that deliver value quickly. You’ll be part of a supportive, inclusive team that values collaboration, transparency, and continuous improvement, guided by agile practices and grounded in our core values of teamwork, accountability, proactivity, and growth.

What You'll Do

• Design and implement scalable, maintainable backend systems and APIs
• Write clean, reliable code with strong testing and documentation practices
• Align with existing architectural patterns while contributing to their evolution
• Communicate and document work to support smooth deployment and knowledge sharing
• Participate in code reviews, demos, and sprint reviews, contributing to a culture of engineering excellence
• Collaborate with product and design to deliver solutions that meet user needs
• Mentor junior engineers, sharing best practices and guiding technical decisions
• Proactively identify opportunities to streamline development while maintaining user value

What We Are Looking For

• Strong expertise in Ruby, Rails, NodeJS, React, REST/GraphQL APIs, Kafka, PostgreSQL
• Deep understanding of distributed systems, microservices, and serverless patterns
• Experience mentoring engineers and setting technical directions
• Ability to make smart trade-offs and simplify complexity without losing quality
• Background in working with and evolving established backend architectures
• Pragmatic mindset focused on performance, maintainability, and readability
• Clear communicator with strong documentation skills
• Collaborative team player with cross-functional experience
• Bonus: familiarity with TypeScript/React and Golang

Our Benefits

• Wellness and home office stipend
• Comprehensive health & dental coverage
• Generous paid time off + parental leave
• Learning & development support
• Remote-first, flexible work culture

UserTesting is an Equal Opportunity Employer and a participant in the U.S. Federal E-Verify program. Women, minorities, individuals with disabilities and protected veterans are encouraged to apply. We welcome people of different backgrounds, experiences, abilities and perspectives. UserTesting will consider qualified applicants with criminal histories in a manner consistent with the San Francisco Fair Chance Ordinance, as applicable.