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Paula Krob

@paulakrob

Senior Full Stack Engineer specializing in retention marketing, performant frontends, and resilient server-side systems.

Brazil

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What I'm looking for

I’m looking for a team where I can own end-to-end web and mobile delivery, strengthen CI/CD and resilient backends, and apply retention marketing/customer journey optimization to drive measurable growth.

I’m a Senior Full Stack Engineer with 7 years of end-to-end web and mobile application development experience. I focus on building performant frontends, engineering resilient server-side solutions, and managing robust data layers that help teams ship with confidence.

In recent work, I’ve owned development and deployment of full-stack applications at Plan A Technologies, driving doubled user engagement and tripled sales revenue. I established automated workflows, segmentation, and list logic with Klaviyo and Shopify, and built scalable, secure backend APIs with Node.js, Express, and NestJS—handling high traffic with reduced latency.

I also bring a strong retention marketing and customer journey optimization angle, using data-driven strategies to increase conversion rates and reduce churn. Across my roles, I’ve optimized database performance with PostgreSQL/MySQL/Redis, implemented testing and QA strategies, led code reviews, and mentored junior engineers to promote continuous improvement.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

Plan A Technologies

Dec 2023 - Apr 2026 (2 years 4 months)

Owned the development and deployment of full-stack applications, doubling user engagement and tripling sales revenue. Built Klaviyo/Shopify automated workflows and engineered secure backend APIs with Node.js, Express, and NestJS to reduce latency and improve customer retention.

Klaviyo Shopify Express NestJS PostgreSQL MySQL Redis Workflows API Development

Full Stack Engineer

Sightline Payments

May 2021 - Dec 2023 (2 years 7 months)

Built and maintained full-stack applications using React, Node.js, and Express, improving user experience and increasing sales revenue. Implemented Klaviyo/Shopify automation for workflows and segmentation, optimized PostgreSQL/MySQL performance, and delivered testing/QA to reduce bugs and support customer retention.

React Express Klaviyo Shopify PostgreSQL MySQL Workflows Segmentation QA

Full Stack Engineer

Veilock

May 2020 - Apr 2021 (11 months)

Built and maintained full-stack applications using React and Node.js, improving user experience and increasing sales revenue. Developed Klaviyo/Shopify automated workflows and segmentation, optimized PostgreSQL/MySQL data performance, and implemented testing/QA to reduce defects.