Senior Full Stack Product Engineer

ActiveProspect, Inc.; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

ActiveProspect, Inc. is seeking a Senior Product Engineer to own customer and business outcomes across the stack. You will ship end-to-end features on the frontend with React and on the backend with Node.js and Python services hosted on AWS, prioritizing impact and quality.

You’ll move between projects, interacting with customers, and delivering fast, reliable results while maintaining strong UX and security. You’ll mentor teammates and help shape product direction.

Qualifications

• Shipping end-to-end with ownership of the outcome.
• Strong product judgment and ability to de-scope and deflect scope.
• Able to onboard quickly into unfamiliar teams and codebases.
• Deep full-stack expertise: React, JS/TS, CSS on the frontend; Node.js and Python on the backend; RESTful APIs.

Responsibilities

• Own outcomes end-to-end, frame the problem, design it, ship it, own the metric.
• Stay close to customers; shadow sales and support; let customer reality drive decisions.
• Own interfaces, reliability, performance, and security; handle on-call for your systems.
• Build and scale both product surface and platform with React frontend and Node.js/Python backends on AWS.
• Architect AI-driven leverage; enable AI-assisted workflows and tooling.
• Mentor teams; write decision memos and ADRs; help design to self-serve.

Skills

End-to-end ownership

Product judgment

Fast onboarding

Full-stack proficiency

AWS cloud

Tools

React

Node.js

Python

REST APIs

AWS

Job description

Senior Product Engineer

Company Overview

ActiveProspect is on a mission to make consent-based marketing the best channel for online customer acquisition. We provide marketers the products they need to acquire qualified customers at scale. Our platform is trusted by thousands of companies engaged in direct-to-consumer marketing, helping them save wasted spend, comply with ever-changing regulations, and manage a constantly evolving partner landscape. Our flagship product, TrustedForm, is used to certify over 1 billion opt‑in digital customer leads every year and is the gold standard for documenting prior express written consent for TCPA compliance.

Job Summary

You own customer and business outcomes, not tickets. You work like a forward‑deployed engineer: your home base is a core team, and you deploy into projects, initiatives, and pods where the problem is, ship the outcome across the full stack (React on the frontend, Node.js and Python services on AWS), then carry what you learned back so the next team moves faster.. The technical bar is high, but coding ability is the floor here, not the ceiling. What sets this role apart is judgment: knowing the smallest thing worth shipping, when to kill your own idea, and when AI output is good enough versus when to override it.

You’ll move between your home team and the initiatives you deploy into, shipping early, talking to customers, and deciding fast.

Responsibilities

• Own outcomes end-to‑end, wherever you’re deployed. Frame the problem, design it, ship it, own the metric. Descope to the cheapest version that works. Prototype in days.
• Stay close to customers. Shadow sales and support, join advisory conversations, and let customer reality drive technical decisions. Propose what to build, defer, and kill.
• Own your domain and share it. Its interfaces, reliability, performance, and security, including on‑call for the systems you own. Consent and PII handling are central to customer trust. Bring patterns, tooling, and hard‑won context back to the wider org rather than hoarding them.
• Build and scale both the product surface and the platform beneath it. Ship responsive, accessible React interfaces with a strong UI/UX eye, back them with Node.js and Python services and APIs, and keep the cloud batch platform and data pipelines that deliver multi‑tenant products reliable as they scale.
• Architect AI-driven leverage. Build AI-assisted workflows that hold up, evolve the team’s practices as tooling changes (Cursor, Claude Code, and whatever comes next), and look for product wins AI unlocks (smarter routing, anomaly detection, and more).
• Multiply the teams you touch. Mentor on judgment and product sense, not just syntax. Write decision memos and ADRs. Enable Product and Design to self‑serve.

Qualifications and Skills

• A track record of shipping something end‑to‑end that you cared about and owning the outcome, not just the code.
• Product judgment: pushing back on a bad spec, proposing the cheapest experiment, descoping well, and collaborating with Product to suggest solutions rather than waiting for a fully specced ticket.
• Comfort embedding with unfamiliar teams and codebases, getting productive fast, and leaving them better than you found them.
• Deep full‑stack expertise: React (component lifecycle, state management, rendering optimization), JavaScript/TypeScript, and modern CSS on the frontend; Node.js and Python services, RESTful APIs, and asynchronous data handling on the backend.
• Cloud and data‑pipeline depth: AWS core services (Lambda, EC2, S3, DynamoDB, API Gateway).

How It Works

You’ll report to an Engineering Manager who owns several teams and stays out of their daily flow. As you embed, you’ll often act as the player‑coach Tech Lead, owning technical direction while the EM owns delivery health and stakeholder alignment across the group.

Success looks like movement in a user or business metric you/your team owns, high‑value work deliberately not built, decisions made fast, and teams that move faster after you’ve worked with them, not just while you’re there.

Reports To

Engineering Manager