Lead Growth Engineer

Location: United States

Department: Product

Lead Growth Engineer

The Opportunity

Seamless is hiring a Lead Growth Engineer to help make the product itself the primary driver of adoption, expansion, and revenue.

This is a senior, high-ownership role at the intersection of engineering, product, and growth. In this role, you will identify opportunities to improve the customer experience, design experiments, ship product improvements, and measure the results.

Your work will directly influence activation, retention, and monetization by improving onboarding, simplifying workflows, and creating natural upgrade opportunities within the product experience.

This is a founding role within growth engineering at Seamless. You will help establish how experimentation, product instrumentation, and growth-driven product development operate across the platform. The Lead Growth Engineer will lead and manage a team of engineers, providing technical direction, coaching, and accountability as the function grows.

You will report to the Head of Product Led Growth and work closely with engineering, product, and data teams to turn growth ideas into shipped product improvements.

Responsibilities

• Design and implement onboarding experiences that help new users reach meaningful product value quickly
• Build and optimize core product workflows that increase repeat usage and habit formation
• Identify opportunities to improve activation, engagement, and retention using product data and user behavior insights
• Generate and execute product experiments to test improvements to the customer journey
• Ship experiments frequently and iterate quickly based on real user behavior and data insights
• Own growth initiatives end-to-end, from hypothesis creation through deployment and measurement
• Implement and maintain experimentation infrastructure including feature flags and product instrumentation
• Use product analytics to evaluate experiment outcomes and identify new opportunities for improvement
• Simplify complex workflows through automation, guided interactions, and thoughtful defaults
• Help establish scalable engineering patterns and experimentation practices that support long-term product-led growth

Skillset

• Senior full-stack engineering experience, ideally with a frontend focus on user-facing systems
• Strong experience building production applications using React, Node.js, and PostgreSQL
• Proven ability to improve onboarding, activation, retention, or other self-serve product experiences
• Experience designing and running product experiments including A/B testing and feature flag implementations
• Familiarity with analytics and experimentation platforms such as Amplitude and GrowthBook (or similar tools)
• Strong product instincts and ability to reason about user behavior, growth loops, and product usage patterns
• Ability to translate product hypotheses into technical experiments quickly and iteratively
• Strong data-driven mindset with the ability to evaluate experiment outcomes and guide product decisions
• Comfortable operating in a fast-moving environment where experimentation and rapid iteration are core to product development

Our Tech Stack

Broadly, we use a modern JavaScript and cloud-based stack designed for rapid product iteration, experimentation, and data-driven development. It’s not a requirement to have worked with every tool in this stack, but the more the better.

• Node.js backend services
• React frontend using styled-components
• PostgreSQL as our primary application database
• AWS infrastructure including EC2 and Lambda
• GrowthBook for feature flagging and product experimentation
• Amplitude for frontend and backend product analytics
• Rollbar for error monitoring
• AWS CloudWatch for system logging and operational monitoring
• GitHub Actions for CI/CD and automated deployments

Education & Requirements

• Bachelor’s degree in Computer Science, Software Engineering, or a related technical field, or equivalent professional experience
• 5+ years of experience in software engineering or full-stack development
• Experience building user-facing B2B SaaS applications
• Experience working with product experimentation or product analytics platforms preferred
• Strong problem-solving and analytical skills with a data-first approach

About Seamless:

Since 2015, Seamless.AI has helped sales teams maximize revenue with the world’s first real-time B2B search engine. As one of Ohio’s fastest-growing companies, we’ve earned top industry accolades, including G2’s 2025 Best Software Products (#1 Highest Satisfaction Product), Purpose Jobs’ 2024 Best Places to Work, and LinkedIn’s Top 50 Tech Startups (2020, 2022, 2023).

We are committed to a diverse, inclusive workplace and do not discriminate based on race, religion, gender, sexual orientation, age, or other protected statuses. Visa sponsorship is not available; applicants must be authorized to work in the U.S.