# Kristina Moskalets > Senior Software Engineer | 6+ YOE | Full stack Location: Seattle, Washington, United States Profile: https://flows.cv/kristinamoskalets Full-stack engineer with 6 years experience building products that drive real business results at Amazon and high-growth startups. At Amazon, I launched three greenfield advertising products from scratch that increased ad revenue and partner program participation, plus built critical infrastructure including authentication microservices and event-driven API architecture. At Postscript, I shipped features that delivered 3x revenue growth and 82% conversion increases for e-commerce merchants. I work primarily in TypeScript, Python, React, Node.js, and AWS, and use AI tools strategically throughout development to move faster and smarter. I thrive on end-to-end ownership - turning ambiguous problems into shipped products that balance immediate impact with long-term scalability. ## Work Experience ### Software Engineer @ Postscript Jan 2023 – Present | Seattle, Washington, United States * Drove 3x revenue growth and 82% conversion lift by architecting and deploying full-stack SMS marketing popup features end-to-end, directly increasing SMS sign-ups by 47% for Shopify merchants across the platform. * Delivered 37% revenue increase and up to 44% SMS list growth by leading cross-functional development with international teams to ship critical feature enhancements to the SMS marketing popup suite, simultaneously boosting email list growth by 39%. * Recaptured 10-15% of lost subscriptions by spearheading backend development of "Onsite Opt-in Reminder" feature, improving overall acquisition rates by 3% and complementing the core Onsite Opt-in product that had already achieved 60% average improvement in popup conversion rates. * Enabled 3x list growth for key marketing partner by independently designing, architecting, and deploying a third-party API integration service that extended Onsite Opt-in capabilities to external platforms. * Established team protocols for proactive error resolution by leading recurring error analysis sessions using Sentry, resulting in targeted deep dives and measurable reduction in alert frequency. ### Software Engineer @ Amazon Jan 2020 – Jan 2022 * Collaborated across teams to develop and launch three customer-facing greenfield products from the ground up that directly contributed to increases in advertising revenue and Amazon Advertising Partner program participation. * Independently developed critical data persistence features of back-end advertising API utilizing event-driven architecture. * Led the development of an authentication and encryption microservice in Python and wrote documentation on best practices for team-wide adoption. * Implemented API registration and localization functionality end to end for the Amazon Advertising Partner Directory, enabling support for international partners. * Improved test quality and enabled test automation for React applications via Cypress. * Enhanced front-end metrics tracking for React applications. * Mentored several software engineer interns, leading to successful full-time conversion. ### Software Engineer Intern @ Amazon Jan 2020 – Jan 2020 | Seattle, Washington, United States ## Education ### Bachelor's degree University of Virginia ## Contact & Social - LinkedIn: https://linkedin.com/in/kristinamoskalets --- Source: https://flows.cv/kristinamoskalets JSON Resume: https://flows.cv/kristinamoskalets/resume.json Last updated: 2026-03-29