Senior Product Engineer II

Prolific; United States; Remote; USD 140,000 - 190,000; Full time

Job summary

Prolific is seeking a Senior Product Engineer II to join our Engineering team. You will be the senior technical contributor, partnering with the Engineering Manager to set direction and ensure delivery excellence.

You will balance hands-on coding with leadership, mentor engineers, and represent your team's work beyond its boundaries. This role emphasizes cloud-based development with Python, JavaScript, and TypeScript.

Qualifications

• Senior-level engineering background with ownership of technical direction.
• Proven ability to lead complex systems and drive reliability and performance.

Responsibilities

• Define Technical Direction: Shape team roadmap and architectural direction with EM.
• Drive Engineering Excellence: Own code quality, testing, and standards.
• Lead Technical Discovery: Guide planning, design, and long-term decisions.
• Collaborate and Influence: Facilitate cross-team work and act as tech liaison.
• Grow the Team: Mentor engineers across levels within the team.

Skills

Technical Leadership

Engineering Expertise

Product Mindset

Influence & Communication

Mentoring & Collaboration

Tools

AWS

GCP

Python

JavaScript

TypeScript

Vue.js

Django Rest Framework

Containers/Docker

Kubernetes

MongoDB

DynamoDB

CircleCI

GitHub Actions

Celery

EventBridge

DataDog

Job description

Senior Product Engineer II

Team: Engineering

Prolific is not just another player in the AI space – we are the architects of the human data infrastructure that's reshaping the landscape of AI development. In a world where foundational AI technologies are increasingly commoditized, it's the quality and diversity of human-generated data that truly differentiates products and models.

The role

As a Senior Product Engineer II you will be the senior technical contributor for your team, partnering with the Engineering Manager to set technical direction and ensure delivery excellence. You will balance hands‑on contribution with technical leadership, serving as the go‑to person for technical decisions and architecture within your team's domain. You are increasingly outward-facing, representing your team's technical work beyond its boundaries.

What you’ll be doing in the role

• Define Technical Direction: Partner with the EM to shape the team’s technical roadmap, strategy, and architectural direction.


• Drive Engineering Excellence: Own code quality, testing, reliability, performance, and engineering standards across the team.


• Lead Technical Discovery: Guide technical planning, discovery, solution design, and decision-making, balancing short‑and‑long‑term needs.


• Collaborate and Influence: Facilitate cross-team technical collaboration, contribute to engineering-wide initiatives, and act as a technical liaison.


• Grow the Team: Actively mentor and develop engineers at any level, within and beyond the team.

What you'll bring to this role

• Technical Leadership: Proven experience leading technical direction, making architectural decisions, and solving complex engineering problems.


• Engineering Expertise: Deep expertise in software engineering, architecture, testing, reliability, performance, and maintainable system design.


• Product Mindset: Ability to connect technical decisions to customer and business outcomes while balancing delivery with long‑term technical health.


• Influence and Communication: Strong communication skills with the ability to build consensus, influence across teams, and explain technical concepts to non‑technical stakeholders.


• Mentoring and Collaboration: A strong track record of developing engineers, working effectively with EMs and wider engineering communities, and contributing to a culture of learning and excellence.

Key Technologies.

We ask for expertise in some, and the willingness to learn where required

• Cloud Platforms: AWS and GCP


• Programming Languages: Python, JavaScript, and TypeScript


• Frameworks: Vue.js, Django Rest Framework, Container‑based and Serverless architectures


• Databases: MongoDB and DynamoDB


• DevOps and Monitoring: CircleCI, GitHub Actions, Kubernetes, Celery, EventBridge and DataDog

Why Prolific is a great place to work

We've built a unique platform that connects researchers and companies with a global pool of participants, enabling the collection of high‑quality, ethically sourced human behavioral data and feedback. This data is the cornerstone of developing more accurate, nuanced, and aligned AI systems.

We believe that the next leap in AI capabilities won't come solely from scaling existing models, but from integrating diverse human perspectives and behaviors into AI development. By providing this crucial human data infrastructure, Prolific is positioning itself at the forefront of the next wave of AI innovation – one that reflects the breath and the best of humanity.

Working for us will place you at the forefront of AI innovation, providing access to our unique human data platform and opportunities for groundbreaking research. Join us to enjoy a competitive salary, benefits, and remote working within our impactful, mission‑driven culture.

Links to more information on Prolific

Benefits

External Handbook

Website

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Privacy Statement

By submitting your application, you agree that Prolific may collect your personal data for recruiting and global organisation planning. Prolific's Candidate Privacy Notice explains what personal information Prolific may process, where Prolific may process your personal information, its purposes for processing your personal information, and the rights you can exercise over Prolific use of your personal information.

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