Open to opportunities

John Williams

@johnwilliams1

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Senior Software Engineer specializing in AI systems and API design.

United States

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What I'm looking for

I am looking for a role that fosters innovation, encourages collaboration, and offers opportunities for professional growth in AI and software development.

As a Senior Software Engineer with a focus on AI systems and API design, I have a proven track record of developing innovative solutions that enhance operational efficiency and drive business growth. My experience spans various industries, where I have successfully designed and implemented AI-driven automation tools, optimized APIs, and collaborated with cross-functional teams to deliver high-quality software products.

At HubSpot, I played a pivotal role in developing AI-driven automation tools that significantly improved marketing and sales processes. My expertise in building high-performance microservices and integrating advanced AI models has enabled me to enhance customer engagement and streamline workflows. I am passionate about leveraging technology to solve complex problems and am committed to continuous learning and professional growth.

Throughout my career, I have consistently demonstrated my ability to lead projects from conception to deployment, ensuring that solutions are scalable, secure, and aligned with business objectives. I thrive in fast-paced environments and am dedicated to driving innovation through collaboration and technical excellence.

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Experience

Work history, roles, and key accomplishments

Current

Senior AI Platform Engineer

Current

HubSpot

May 2023 - Present (2 years 6 months)

Designed and developed AI-driven automation tools within Breeze, HubSpot's next-generation AI suite, enhancing efficiency in marketing, sales, and customer service. Built high-performance microservices and optimized RESTful and GraphQL APIs using Node.js, TypeScript, and Python to power AI Agents and integrate seamlessly with HubSpot’s Smart CRM. Integrated OpenAI’s GPT models using the OpenAI Pyt

AI Node TypeScript Python RESTful APIs GraphQL APIs Agile Machine Learning Lang Chain AWS Lambda API Gateway OAuth 2.0 JWT RBAC Kubernetes Docker GitHub Actions Jenkins

Machine Learning Engineer

Link Technologies

Oct 2022 - Apr 2023 (6 months)

Delivered scalable, secure NLP solutions for government, telecom, and utility clients, leading end-to-end development and systems integration in an Agile environment. Built core components of a Java-based natural language processing application, applying Test-Driven Development (JUnit) and Feature-Driven Development (GreenPepper). Designed and deployed a multi-protocol web service layer (SOAP, RES

NLP Java Agile

Senior Backend Engineer – AI Integrations

Pigeonly

Aug 2020 - Sep 2022 (2 years 1 month)

Engineered scalable backend systems for Pigeonly, a tech company dedicated to reducing the impact of incarceration by facilitating affordable communication between inmates and their families. Led the development of a secure mobile messaging application, enhancing user engagement and increasing active users by 25%. Architected and implemented a robust data processing pipeline, streamlining communic

Backend Development Messaging Data Processing

AI Infrastructure Engineer

Influential

Aug 2017 - Aug 2020 (3 years)

Spearheaded backend development on Influential’s AI-powered influencer marketing platform, enabling global brands to activate 3.5M+ creators across TikTok, Instagram, and YouTube. Partnered with cross-functional AI and data science teams to deploy machine learning systems that optimized influencer-brand matching using psychographic and sentiment analysis. Engineered and scaled NLP pipelines using

Backend Development AI Machine Learning

Web Developer – E-commerce

OrderWithMe

Apr 2015 - Feb 2017 (1 year 10 months)

Instrumental in designing, developing, and maintaining the company’s web-based solutions tailored to small and medium-sized businesses. Developed and maintained web applications using Laravel, Python, MySQL, and React, delivering robust solutions tailored to diverse client requirements. Created an optimized checkout page, leading to a 20% increase in user clicks and a 30% boost in customer purchas

Web Development Laravel Python