Lead Applied AI Engineer

New

Skills

A/b Testing Full-stack Development Mysql Postgresql ReactJS Ruby On Rails Team leadership

Circle is seeking a seasoned Lead Engineer, Applied AI to drive the development and scaling of AI-driven features for our all-in-one community platform. This fully remote role empowers you to deliver end-to-end full-stack AI projects, experiment with cutting-edge technologies, and collaborate with product and design teams to create outstanding user experiences. Join a fast-paced, growth-focused environment that prioritizes innovation, speed of iteration, and individual autonomy.

Key Responsibilities
  • Lead and ship full-stack AI projects from inception to production, leveraging Ruby on Rails and React.
  • Design and execute experiments, including A/B testing, to validate AI features and measure impact.
  • Build and optimize AI infrastructure components for reliability and performance in production environments.
  • Continuously improve processes, tools, and systems to scale AI features and ensure high code quality.
  • Collaborate closely with product leaders and designers to deliver world-class user experiences.
Required Skills & Qualifications
  • 7+ years of experience as a full-stack engineer on large-scale web applications (100k+ rpm, 100GB+ databases).
  • Strong proficiency in Ruby on Rails, MySQL/PostgreSQL, and ReactJS.
  • Experience leading engineering teams, particularly in growth-driven environments.
  • Expertise in designing and running A/B tests and iterating based on experiment outcomes.
  • Comfort working autonomously in fast-paced, ambiguous settings with a focus on rapid learning.
  • Alignment with Circle’s values and proficient English communication skills.
  • Bonus: Experience in AI infrastructure, deploying LLMs at scale, or production AI use cases.

Job Type: Remote

Salary: Not Disclosed

Experience: Entry

Duration: 12 Months

Share this job:

Similar Jobs

BI Analyst – Sporty Group

New

Deliver actionable business insights

Develop and optimize data pipelines

A/b Testing Ab testing Airflow AWS

Wikipedia Reader Growth Lead

New

Enhance Wikipedia’s reading experience for modern users.

Develop and scale innovative content discovery features.

A/b Testing Ab testing Agile Agile Methodologies

Reader Growth Product Manager

New

Enhance Wikipedia reading experience

Develop intuitive content discovery features

A/b Testing Ab testing Agile Agile Methodologies

Wikipedia Reader Growth Lead

New

Evolve Wikipedia's reading experience for new generations

Develop and deploy intuitive, multimedia features

A/b Testing Ab testing Agile Agile Methodologies

Reader Growth Product Manager

New

Enhance Wikipedia reader engagement for new generations

Lead cross-functional teams to deliver innovative features

A/b Testing Ab testing Agile Agile Methodologies

Reader Growth Product Manager

New

Enhance Wikipedia reading experiences for modern audiences.

Lead cross-functional teams to develop and scale new features.

A/b Testing Ab testing Agile Agile Methodologies

VP Analytics & AI Leadership

New

Lead and scale a global analytics team

Drive business impact through advanced analytics and AI

A/b Testing Ab testing Analytics Customer Experience

Product Designer Monetization

Posted 3 days ago

Drive user activation, conversion, and retention

Design ethical and transparent monetization flows

A/b Testing Analytics Cross-functional Collaboration Data Analysis

Senior Product Analyst Role

Posted 7 days ago

Drive business growth through analytics

Deliver actionable insights from data

A/b Testing Ab testing Analyst BigQuery

Marketing Analyst Role

Posted 7 days ago

Drive data-informed marketing decisions

Optimize campaigns through analytics

A/b Testing Ab testing Analyst Entertainment

Senior Digital Marketing Analyst

Posted 10 days ago

Deliver actionable data insights for marketing optimization

Support and enhance PPC campaign performance

A/b Testing Ab testing Analyst Dashboard Development

Customer Acquisition Product Lead

Posted 10 days ago

Enhance customer acquisition through product innovation

Drive data-driven experimentation and optimization

A/b Testing Ab testing Agile Agile Methodologies

Experiment Platform Engineering Manager

Posted 10 days ago

Lead and develop a privacy-preserving experimentation platform

Foster an inclusive and empowering remote team culture

A/b Testing Ab testing Architecture Cloud

Staff AI Engineer Role

Posted 12 days ago

Build scalable, production-grade LLM and agentic AI systems

Automate and optimize sales and marketing workflows using AI

A/b Testing Architecture AWS Azure

Growth Product Manager Role

Posted 14 days ago

Drive product-led growth initiatives

Lead and execute growth strategies

A/b Testing Data Analysis Growth Strategy Product

Remote Growth Manager Role

Posted 14 days ago

Recruit a remote growth manager

Support small business growth

A/b Testing Analytics Content Marketing Data Analysis

Senior Frontend Engineer Growth

Posted 18 days ago

Hire a senior frontend engineer

Drive user growth for Atlassian tools

A/b Testing Analytics Css3 Engineer

Remote Growth Marketing Manager

Posted 21 days ago

Recruit a remote growth marketing manager

Drive user acquisition and engagement

A/b Testing Cloud infrastructure Content Strategy Data Analysis

Product Director, User Growth

Posted 27 days ago

Drive user acquisition and retention

Establish data-driven growth frameworks

A/b Testing Ab testing Computer science Data Analysis

Remote Performance Marketer Role

Posted 28 days ago

Hire a remote performance marketer

Focus on creative optimization

A/b Testing Data Analysis Digital Advertising Ecommerce platforms

Lead Product Manager, Wikipedia

Posted 32 days ago

Enhance Wikipedia's reading experience for new generations

Lead cross-functional teams to build and scale user-centric features

A/b Testing Ab testing Agile Agile Methodologies

Wikipedia Reader Growth Lead

Posted 32 days ago

Enhance Wikipedia's reading experience for new generations

Lead cross-functional teams to build and scale innovative features

A/b Testing Ab testing Agile Agile Methodologies

Paid Social Marketing Manager

Posted 32 days ago

Lead paid social user acquisition campaigns

Optimize campaign performance across key metrics

A/b Testing Budgeting Data Analysis Google Analytics

Wikipedia Reader Growth Lead

Posted 32 days ago

Enhance Wikipedia's reading experience for new generations

Lead cross-functional teams to build scalable features

A/b Testing Ab testing Agile Agile Methodologies

Wikipedia Reader Growth Lead

Posted 32 days ago

Enhance Wikipedia's reader experience for new generations.

Lead cross-functional teams to build innovative, scalable features.

A/b Testing Ab testing Agile Agile Methodologies

Reader Growth Product Manager

Posted 32 days ago

Enhance Wikipedia's reading experience for new generations

Develop and scale engaging, modern features across platforms

A/b Testing Ab testing Agile Agile Methodologies

Consumer Lifecycle Marketing Manager

Posted 33 days ago

Hire a remote lifecycle marketing manager

Enhance consumer engagement and retention

A/b Testing Data Analysis Email Marketing Lifecycle marketing

Remote Marketing Analyst Role

Posted 33 days ago

Hire a remote marketing analyst

Analyze and optimize marketing efforts

A/b Testing Communication Data Analysis Data Visualization

User Growth Data Science Lead

Posted 33 days ago

Lead data science for user growth

Drive user acquisition and retention

A/b Testing Data Scientist Data Visualization Growth Strategy

Affiliate Lead, DeFi Growth

Posted 33 days ago

Drive trading volume and user acquisition through affiliates

Design and manage a global affiliate program

A/b Testing Affiliate Program Management Analytics Communication

BI Analyst – Sports Betting

Posted 33 days ago

Mine and analyze large-scale business data

Develop and maintain dashboards and reports

A/b Testing Ab testing Airflow Analyst

Engagement & Subscriptions PM

Posted 33 days ago

Drive member activation and retention

Optimize engagement and subscription growth

A/b Testing Agile Amplitude Cohort analysis

Unity Funnel Metrics Engineer

Posted 61 days ago

Optimize user funnels in mobile apps

Increase and streamline A/B test deployment

A/b Testing C# Game development Git

Senior SEO Product Analyst

Posted 64 days ago

Drive actionable SEO insights from data analysis

Collaborate with cross-functional teams to influence strategy

A/b Testing Ab testing Analyst Analytics

Remote Growth Product Manager

Posted 66 days ago

Lead product growth initiatives

Work remotely across Canada or the US

A/b Testing Agile Methodology Communication Cross-functional Collaboration

Engagement & Subscriptions PM

Posted 66 days ago

Drive member activation, engagement, and retention

Develop and execute data-driven product strategies

A/b Testing Ab testing Agile Agile Methodologies

Paid Social Marketing Manager

Posted 66 days ago

Lead and scale paid social user acquisition campaigns

Optimize digital marketing performance for web and app

A/b Testing Budgeting Data Analysis Google Analytics

Marketing Engagement Manager

Posted 67 days ago

Hire a remote marketing manager

Enhance user engagement and retention

A/b Testing Campaign Management Content Strategy Data Analysis

Affiliate Lead, DeFi Growth

Posted 67 days ago

Design and manage a global affiliate program

Drive user acquisition and trading volume for Fogo

A/b Testing Affiliate Program Management Analytics Communication

Remote Growth Manager Role

Posted 68 days ago

Hire a remote growth manager

Support enterprise teams with design

A/b Testing B2b Sales Content Marketing Conversion Optimization

Principal Product Manager, Engagement

Posted 68 days ago

Drive measurable parent and student engagement

Leverage AI and data for personalized user experiences

A/b Testing Communication Skills Data Analysis Generative AI

BI Analyst, Sports Betting

Posted 68 days ago

Deliver actionable data insights for business growth

Design and maintain robust ETL pipelines

A/b Testing Ab testing Analyst AWS

Remote Email Marketing Manager

Posted 69 days ago

Hire a remote Email Marketing Manager

Manage and optimize email campaigns

A/b Testing Analytics Campaign Management Content Creation

Growth Associate – Performance Marketing

Posted 71 days ago

Optimize and manage paid social media campaigns

Utilize data analysis to drive marketing decisions

A/b Testing B2c Communication Cross-functional Collaboration

Senior Reader Product Manager

Posted 73 days ago

Enhance Wikipedia's reader experience globally

Develop and scale features for desktop and mobile users

A/b Testing Ab testing Agile Agile Methodologies

Senior User Acquisition Manager

Posted 74 days ago

Drive multi-channel user acquisition

Optimize digital advertising campaigns

A/b Testing Affiliate Marketing Google ads Looker

Sr. Product Manager, Growth

Posted 75 days ago

Lead product growth initiatives

Drive user acquisition and engagement

A/b Testing Data Analysis Growth Strategy Market Research

Remote Media Buyer LATAM

Posted 75 days ago

Recruit experienced media buyers for remote roles

Manage and optimize paid ad campaigns

A/b Testing Copywriting Data Analysis Google ads

Performance Marketing Media Buyer

Posted 75 days ago

Drive paid acquisition growth

Optimize multi-channel marketing campaigns

A/b Testing Collaboration Tools Copywriting Creative

Marketing Funnel Specialist Role

Posted 77 days ago

Execute and optimize digital marketing campaigns

Manage and improve lead funnels using data

A/b Testing Campaign Management Content Creation Copywriting
overtime