Senior Software Engineer, AI Agents

Nxt Level; New York (NY); On-site; USD 180,000 - 260,000; Full time

Job summary

Nxt Level, a leading AI-native customer research platform, seeks a Senior / Staff Member of Technical Staff to build and scale its software stack. You’ll own features end-to-end, from conversational AI experiences to research insights, and work across frontend, backend and AI systems.

The role emphasizes product-minded software engineering, delivering customer-facing applications, tackling complex problems, and partnering with product and design to shape scalable, high-performance solutions for

Qualifications

• 4+ years of professional software engineering experience.
• Strong full-stack fundamentals and delivery of production software.
• Ability to translate requirements into intuitive user experiences.
• Experience developing backend APIs, services and scalable architecture.
• Familiarity with modern frontend frameworks and backend technologies.

Responsibilities

• Build and ship AI-native product features across the platform.
• Develop conversational AI capabilities for research findings.
• Create analysis and insights tools to understand customer feedback.
• Develop recruitment, incentive management and self-service workflows.
• Scale panels, participant lists and recruitment at scale.
• Improve frontend architecture, UI components and design systems.
• Collaborate with product and design to deliver customer-facing experiences.
• Design and build scalable APIs, backend services and distributed systems.
• Own features end-to-end from design to deployment and iteration.
• Contribute to roadmap expansion as adoption grows.

Skills

Full-stack engineering

Production software

API design

Distributed systems

Frontend frameworks

Backend services

Ownership

Job description

Senior / Staff Member of Technical Staff

Employment Type: Full-time

Experience: 4+ years

Focus: AI Product Engineering, Full-Stack Development, Distributed Systems, APIs, Customer Research Platforms

About Our Client

Our client is building an AI-native customer research platform that transforms how companies understand their customers and make business decisions.

Their AI agents automate the entire research process, from designing studies and recruiting participants to conducting interviews and synthesizing insights.

The platform connects companies with a network of more than 50 million research participants, supports interviews in over 120 languages, and helps organizations gather insights at unprecedented speed and scale.

The company is also developing AI-powered digital twins that simulate real customer behavior, enabling businesses to test products, messaging, and strategic decisions before bringing them to market.

Trusted by major technology companies, including Microsoft and Anthropic, the platform is designed to fundamentally change how customer research is conducted.

About the Role

Our client is hiring a Senior / Staff Member of Technical Staff to build and scale its AI-powered customer research platform.

This is a high-ownership engineering role that combines full-stack product development, AI-powered features, platform engineering, and user experience.

You'll work across the product, from building conversational AI experiences and research insights to developing participant recruitment systems, improving platform design, and scaling backend infrastructure.

The ideal candidate is a product-minded software engineer who enjoys building customer-facing applications, solving complex technical problems, and owning features from concept through production.

What You'll Do

• Build and ship AI-native product features across the customer research platform.
• Develop conversational AI capabilities that allow customers to interact with research findings and insights.
• Build analysis and insights tools that help businesses understand customer feedback and make decisions.
• Develop participant recruitment, incentive management, and self-service research workflows.
• Build systems for managing research panels, participant lists, and recruitment at scale.
• Improve the overall product experience, including frontend architecture, UI components, and design systems.
• Partner closely with product and design teams to develop intuitive, customer-facing experiences.
• Design and build scalable APIs, backend services, and distributed systems.
• Own features end-to-end, from technical design and implementation through deployment and iteration.
• Help expand the product roadmap and improve the platform as customer adoption grows.

What We're Looking For

• 4+ years of professional software engineering experience, with demonstrated senior-level technical ability.
• Strong full-stack software engineering fundamentals.
• Experience building and shipping production software used by real customers.
• Strong product instincts and ability to translate ambiguous requirements into intuitive user experiences.
• Experience developing backend APIs, services, and scalable application architecture.
• Comfortable collaborating with product managers, designers, and engineers.
• Ability to take ownership of complex technical problems from design through deployment.
• Experience working with modern frontend frameworks and backend technologies.
• Strong understanding of system design, software architecture, and engineering best practices.
• Ability to move quickly, solve problems independently, and thrive in a high-performance engineering environment.

Bonus Experience

• Experience building AI-native products or LLM-powered applications.
• Experience with conversational AI, agentic workflows, or AI-driven analytics.
• Experience building data analysis, insights, or business intelligence products.
• Experience developing self-service platforms, marketplaces, or participant recruitment systems.
• Experience with distributed systems and high-scale backend infrastructure.
• Experience building frontend design systems or complex interactive interfaces.
• Previous experience at an early-stage or high-growth startup.

Why This Opportunity

• Build AI agents that automate customer research from start to finish.
• Work on products used by some of the world's most recognized technology companies.
• Join a small, highly technical team building an AI-native platform.
• Own meaningful product features across frontend, backend, and AI systems.
• Help develop new ways for companies to understand customers through AI-powered research.
• Experience startup-style engineering with the potential reach and resources of a global enterprise software company.
• Help shape a platform positioned to serve a significantly larger enterprise customer base.