Job Title: Senior Growth Full-Stack Engineer Company Name: Seamless Job Details: Salary,not,providedReactAWSTypeScriptJavaScriptTableauNode.jsPostgresAmplitudeSegmentOptimizelyDynamoDBSenior,and,Expert,levelRemote,from,USMore,information,about,location Job Url: https://app.welcometothejungle.com/jobs/KDHmE7hE?theme=preferred-sector§or-id=29 Job Description: Role Who you are 5+ years of experience as a full-stack engineer (startup or growth-focused environment preferred) with SaaS product Strong proficiency in modern JavaScript/TypeScript (React.js, Node.js) Proficiency with modern database technologies (PostgreSQL, Vector DBs, OpenSearch, DynamoDB) Proficiency with Cloud architecture and scalability best practices, in particular AWS (Lambda, serverless, cloud-native services) Hands-on experience with A/B testing platforms (GrowthBook, Optimizely, LaunchDarkly, etc.) Familiarity with feature flag systems and controlled experiment rollout strategies Experience with product analytics tools (Amplitude, Segment, Tableau) Ability to translate growth hypotheses into technical experiments quickly and iteratively Strong data-driven mindset with the ability to evaluate experiment outcomes statistically Comfortable working in fast-moving, cross-functional growth teams Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience) Proven experience delivering full-stack features and experiment infrastructure in a fast-paced environment Demonstrated ability to collaborate across engineering, product, and growth teams Strong problem-solving and analytical skills with a data-first approach Desirable Background in PLG, growth engineering, activation, or onboarding-focused roles Experience with event-driven architecture and scalable systems Familiarity with in-app education & onboarding tooling (e.g., Userflow) Familiarity with Pinecone and LLMs Experience building SaaS applications in the B2B or productivity space What the job involves We’re looking for a Senior Growth Full-Stack Engineer to join our Activation team at Seamless.AI This role sits at the intersection of engineering, product, and growth, helping us design, build, and run experiments that accelerate user onboarding, engagement, and activation You’ll partner closely with growth product managers, designers, and analysts to rapidly ship and iterate on experiments that improve how new users discover value in Seamless.AI Collaborate with growth, product, and data teams to design and implement A/B tests and growth experiments focused on user activation Build, deploy, and maintain full-stack features and experiment infrastructure (frontend + backend) Implement and manage feature flagging systems to enable rapid testing and controlled rollouts Work with GrowthBook (or similar experimentation platforms) to set up, track, and analyze experiments Instrument and track user behavior in Amplitude and other analytics platforms to generate insights Write clean, scalable, and maintainable code across the React frontend and Node.js backend Monitor and evaluate experiment outcomes, providing actionable insights and recommendations Balance speed of experimentation with engineering best practices, ensuring quality while moving quickly The #1 goal of this position is to help Seamless.AI increase user activation, feature adoption, and time-to-value. These efforts will maximize customer retention & satisfaction Share this job Report a problem with this job Hide company View 2 more jobs at Seamless Insights -12% employee growth in 12 months Glassdoor (3.3) Company Company benefits Clock In From Home: Don’t worry about commuting to an office building or working in a cramped cubicle all day. Seamless.AI is 100% remote, which means you can work from the comfort of your own home Enjoy Work/Life Balance: We work hard to deliver a world-class product, but we play just as hard. We are committed to giving employees ample time off to recharge and spend time with family. To that end, we offer employees time off through PTO plans with vacation time and paid holidays Invest In Your Health & Wealth: To produce your best work, you need to feel your best. For this reason, we provide comprehensive health benefits (Medical, Dental, Vision, etc.). In thinking ahead to your future, we also offer a 401(k) employer matching program Get Paid For Your Hard Work: We are a merit-based company. This means that we recognize and reward hard work and results, regardless of your tenure. Instead of waiting a year to earn a raise, we offer promotions and any-time raise incentives based on performance, in addition to unlimited sales commission potential A Team That Values You: At Seamless.AI your voice is always heard. Instead of executing orders from the top-down, we encourage feedback from everyone and regularly implement changes driven by our employees’ ideas. This all-inclusive approach is what makes our company and our services world-class Sharpen Your Skills: We promote a culture of constant improvement. To support your professional development, we provide ongoing training and team coaching Funding (2 rounds) May 2021 $75m SERIES A Aug 2017 $0.3m CONVERTIBLE Total funding: $75.3m Our take Seamless.AI is a sales automation solution that allows sales professionals to seamlessly discover and engage potential customers. through harnessing advanced artificial intelligence and machine learning, the platform optimizes lead generation process, enhancing sales efficiency. By aggregating data from various sources, Seamless.AI equips sales teams with actionable insights and pertinent information, facilitating the identification and pursuit of high-value leads. Notably, the platform has garnered widespread acclaim, emerging as one of LinkedIn's fastest-growing startups. Building on this success, Seamless.AI has unveiled three new products - Org Chats, Job Changes, and Buyers Intent - further enriching its suite of offerings. With a commitment to ongoing innovation, the company aims to solidify its position as a pioneer in sales automation, promising continued advancements and features in the pipeline. Steph Company Specialist at Welcome to the Jungle