Jimmy Baker

Shipping high-impact features for HubSpot's Sequences product, building AI-powered sales tools that help millions of organizations grow better.

• Built an Agentic Sequence Builder, a feature enabling our customers to build sequences through natural language using AI
• Shipped the new Prospecting Agent, an AI-powered tool that automates sales prospecting workflows
• Built Smart Blocks, a feature for email templates enabling dynamic and personalized email content at scale
• Delivered numerous improvements to the Sequences product, enhancing reliability and user experience
• Collaborated cross-functionally to drive product innovation in the sales automation space

Led the Membership Growth team to enhance user engagement and satisfaction through the innovative development of key product features for the Rides and Eats applications.

• Launched Uber One — Uber's mobility and delivery membership program with 30M+ global members
• Designed and architected event-driven systems processing millions of events per hour
• Developed membership upsells seen by millions of people daily across the world
• Created membership benefits including Rides cashback, discounts on Eats orders, and latest arrival guarantee
• Orchestrated experiments to test various upsell variations, identifying the most effective options for maximizing conversion rates.
• Conducted in-depth investigations of incidents affecting business operations and user experience, pinpointing root causes and providing actionable insights to leadership. Developed and implemented strategies that significantly reduced future incidents and enhanced system reliability.
• Collaborated closely with product managers to define project requirements and timelines, ensuring the successful delivery of multiple software projects on schedule and within budget.
• Designed and launched innovative tooling that transformed engineering workflows, significantly accelerating development processes and empowering the team to deliver high-quality features faster and more efficiently.
• Conducted thorough reviews of Engineering Review Documents (ERDs), offering insightful feedback and actionable suggestions to peers, fostering a culture of collaboration and continuous improvement within the engineering team.
• Advised leadership on critical trade-offs in project decisions, used creative problem-solving skills to develop innovative solutions for complex challenges, ultimately aligning technical strategies with business objectives.
• Served as the primary on-call engineer, responsible for managing and resolving critical incidents during emergencies, ensuring minimal downtime and maintaining high service availability for millions of users. Leveraged strong problem-solving skills and technical expertise to quickly diagnose issues, coordinate with cross-functional teams, and implement effective solutions under pressure.
• Optimized codebase for scalability and performance, reducing application load times by 30%
• Mentored junior team members in engineering best practices

Built new features for the merchant portal and led the development of Postmates Unlimited membership program.

• Led development of Postmates Unlimited, increasing user engagement by 40%
• Built new features for the merchant portal using TypeScript, React, and Apollo.
• Created Visa partnership feature for free Postmates Unlimited
• Optimized codebase using GraphQL and Apollo, reducing load times by 25%
• Mentored junior engineers on best practices

Built the core technology platform for a bill negotiation service (acquired by Experian).

• Created GraphQL API for internal, customer, and partner-facing applications
• Built web scraper for automated bill collection
• Developed partner portal and API for third parties like Honey

Co-founded and built a multi-tenant business operations management platform.

• Built platform with omni-channel sales, inventory management, e-commerce, and POS features
• Created iPad Point-of-sale app using React Native with GraphQL backend
• Achieved PCI certification as a TSYS/Cayan partner
• Built custom ElasticSearch index for faceted search capabilities

Worked on Desk.com, a customer support platform.

• Built the Desk.com V2 REST API
• Contributed to new Support Agent application using Angular
• Led development of analytics dashboard

Built a custom e-commerce and business operations system using Ruby on Rails

• Built Ruby on Rails application that empowered staff to run day-to-day operations.
• Built an eCommerce platform from scratch
• Added CRM features including contract pricing and other B2B features
• Created custom inventory tracking system which optimized company cash flow by minimizing inventory on hand
• Automated purchasing based on statistical analysis of what we need given seasonal sales history across various margins of error
• Integrated with third party APIs like USPS, UPS, FedEx, Paypal, Twilio, Maxmind, and more.
• Built a competitor pricing web crawler that fetched competitor prices each day and let staff know which products needed price adjustments.