Senior/Staff Software Engineer (Backend)

Senior/Staff Software Engineer (Backend) Role at a glance As a Senior / Staff Backend Software Engineer, you’ll help our customers run better user research and bring the voice of the user into every product decision. - What: Your work will directly shape how modern product, design, and research teams connect with their users and scale high-quality research. - Impact: You’ll join our Engineering team and partner closely with Product, Design, Research, and Go-To-Market partners. - Team: You’ll be part of a small, senior group of builders who care deeply about craftsmanship, reliability, and creating leverage for product teams. - Work style: Remote-first within the United States, with regular async collaboration and optional in-person team onsites. About Rally UXR Rally is the User Research CRM that helps product, design, and research teams talk to their users quickly, safely, and at scale. Our platform automates the unglamorous parts of research—participant recruitment, outreach, screening, scheduling, consent, and incentives—so teams can spend more time learning from customers and less time wrestling with spreadsheets and manual workflows. We’re trusted by UX, product, and research teams at companies like Google, Adobe, Figma, GitLab, MongoDB, Webflow, and others who use Rally to make research a continuous input into product decisions. User research is still an emerging capability inside many organizations and has historically relied on disjointed tools and manual processes. Rally exists to fix that: we’re building the infrastructure layer that makes high-quality research easier to run, easier to scale, and impossible to ignore. We’re backed by leading investors including Y Combinator, Stage 2 Capital, and Canapi Ventures, and we’re growing quickly as more teams realize that continuous research is a competitive advantage. About the team Rally Engineering is a highly collaborative, user-obsessed group focused on making research smoother for both our customers and their participants. - We work closely with UX Researchers, Research Ops leaders, designers, and product managers at some of the world’s most user-centric companies. - We use Rally to build Rally—talking to our own users frequently, running studies on our platform, and feeding insights straight into the roadmap. - We favor small, empowered teams, high ownership, and a tight feedback loop between customers, product, and engineering. The opportunity Rally is in the middle of a massive shift in how companies run user research: from ad-hoc, one-off projects to continuous learning that informs every product decision. In this role, you’ll help define what that future looks like—for Rally as a product and for the teams who rely on us to run research at scale. You’ll join at a stage where we have a strong product-market fit, a fast-growing customer base, and plenty of hard, interesting problems left to solve. As a Senior Backend Engineer, you’ll be central to scaling Rally’s core systems and services to power hundreds of millions of participant records and billions of events. You’ll own critical infrastructure—like email/SMS delivery, data pipelines, search, and workflow automation—and help lay the foundation for new AI-driven features. What you’ll do - Scale and evolve backend systems that manage large-scale participant and event data, improving performance, reliability, and responsiveness as we grow. - Own and mature critical infrastructure such as email/SMS delivery, data sync pipelines, search APIs, and workflow automation, with a focus on observability and operational excellence. - Drive the evolution of our platform from 1→10: strengthening existing services to handle greater scale, tighter SLAs, and deeper product integration—not just shipping new features. - Design and implement backend services and APIs in TypeScript, working across our stack (AWS, Postgres, Elasticsearch, Kafka, Temporal) to deliver robust, maintainable systems. - Collaborate c ... (truncated, view full listing at source)