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New York, NY, USA

Joe M.

Hands on Founder / CTO with a product and strategy focus

I’m a full-stack engineer and technical leader who thrives on building impactful systems and teams. Over the years, I’ve worn many hats—engineer, architect, product thinker, and leader—while staying deeply connected to the work itself. From developing web and mobile apps to architecting scalable backends and training/deploying machine learning models, I bring both technical depth and a focus on strategic business and product outcomes.

At Amazon, I built platforms and tools that powered digital goods like Kindle and Video, working across the stack to scale systems for millions of users. Later, at an ad tech startup, I was the first engineer hired and designed a data platform and SDKs that processed hundreds of millions of daily events, helping grow the team from 3 to 30.

As CTO of my first startup, I scaled our engineering team and built a shopping assistant used by 1M+ users, alongside a monetization platform that drove $75k MRR in just over a year. Now, as co-founder and CTO of Upnext, I lead our engineering and product efforts, architecting all parts of the stack including backend data pipelines, web/mobile apps, and ML systems. I’ve trained and deployed custom machine learning models and fine-tuned LLMs to outperform leading closed-source models to power our personalization and content understanding algorithms.

I build more than systems - I build teams, cultures, and strategies. Whether mentoring engineers, driving technical and product roadmaps, or determining business strategy and its alignment with product and engineering, I focus on delivering high-impact results while enabling others to grow—all while aligning technical execution with strategic product and business outcomes. I’ve scaled teams while maintaining high performance, effective execution and personal growth across teams.

Alongside my entrepreneurial experience, I’ve advised companies on scaling teams, modernizing tech stacks, and solving complex technical and business challenges.

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Joe M.

Work

Upnext

Upnext is a powerful cross platform app that allows you to save any type content—including articles, podcasts, newsletters, tweets, threads, and videos—into a single, organized library with integrated note taking and powerful organization features. With ML powered content understanding, Upnext automatically organizes your content and intelligently suggests content as you work through your library.

Experience

Jun 2020 — Present
Upnext

Upnext

Founder / CTO

Upnext is on a mission to help people tackle content overload. We build tools for people to tame the internet's firehose of content into a curated and highly personalized stream. With our flagship product Upnext, we built a powerful personal content library that ensured you never missed a critical piece of content. With our latest product Brief, we’re helping people find highly relevant news content personalized to their niche interests.

  • Product and engineering leader, grew the team to ten people
  • Lead the engineering architecture and product strategy
  • Ensured our product strategy effectively tackled business goals and engineering executed efficiently against those goals
  • Lead the development of our mobile, desktop and web apps
  • Architected and deployed our ML strategy, fine tuned traditional models and LLMs to recommend and understand content
  • Promoted and mentored three new tech leads
May 2017 — Jun 2020
Affilio

Affilio

Founder / CTO

Affilio built ecommerce tools for consumers and enterprises. Our consumer facing shopping assistant provided instant product review summaries, price comparisons, sale monitoring and automatic deal searches. Our enterprise offering included a white labeled shopping assistant, API access to our data feeds and a monetization platform allow companies to offer a better shopping experience to their users.

  • Lead the design and development of our consumer and B2B products, used by 2M+ users
  • Grew the engineering team to 15
  • Chief architect of our consumer web app, browser extension, APIs and data platform
Sep 2014 — May 2017
Sourcepoint Technologies Inc

Sourcepoint Technologies Inc

Software Engineer

Sourcepoint is the practical privacy software company trusted by the world's most influential brands. Supporting over 30 billion consumer touchpoints per month, Sourcepoint offers enterprise-grade privacy automation for complex, dynamic compliance challenges.

  • First engineering hire at the company, played a critical role in growing the team from 3 to 30
  • Lead the design and development of our client sides JS SDKs
  • Designed and deployed our analytics pipelines, processings 100M+ events per month
Aug 2012 — Sep 2014
Amazon

Amazon

Software Development Engineer - Builder Tools and Digital Store Platform

Amazon's builder tools team creates products and services that empowers 10s of thousands of software developers across the company to do their jobs effectively every day. The Digital Store Platform aimed to unify all of Amazon's digital stores (Kindle, Video, App Store, etc) onto a single commerce platform.

  • Worked closely with internal store teams to define platform requirements and understand use cases
  • Designed and developed a (now patented) hybrid on device / server execution payments execution engine to power multi step international payments
  • Managed critical store platform components processing millions of dollars in transactions each day