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I'm a Software Engineer with experience in various technologies. I've worked at Klaviyo, Flowcode, and Capital One, focusing on building efficient software solutions. I stand out for my problem-solving skills and dedication to quality work.…

Joshua Johnson

Full Stack Developer, Back-End Developer, AI Engineer, +2

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I'm a Software Engineer with experience in various technologies. I've worked at Klaviyo, Flowcode, and Capital One, focusing on building efficient software solutions. I stand out for my problem-solving skills and dedication to quality work.…

Available to hire

I’m a Software Engineer with experience in various technologies. I’ve worked at Klaviyo, Flowcode, and Capital One, focusing on building efficient software solutions. I stand out for my problem-solving skills and dedication to quality work.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Software Engineer at Klaviyo

November 1, 2021 - Present

Led the full ownership of an AI-augmented messaging personalization engine using LLMs and RAG architecture; built data pipelines retrieving user interaction histories from PostgreSQL and Redis; preprocessed with vector embeddings; deployed via Terraform/CDK pipelines; ensured zero-downtime deployments and on-call readiness; implemented monitoring and optimized performance.

Software Engineer Intern at Amazon Lab126

September 1, 2017 - December 1, 2017

Contributed to Alexa voice processing pipeline: built modules in C++ (signal processing, wake word, audio streaming) for resource-constrained environments; optimized latency and memory usage.

Software Engineer Intern at Capital One

July 1, 2018 - October 1, 2020

Worked on backend systems for digital banking features; exposed RESTful APIs to mobile/web clients; used PostgreSQL for core transactions; Redis for caching; Kafka for event streaming; collaborated with product managers to deliver features on schedule while meeting security and compliance needs.

Software Engineer Intern at Capital One

June 1, 2017 - August 1, 2017

Designed proof-of-concept features using Python/Java; integrated with backend services; built simple REST APIs; wrote unit tests; participated in agile ceremonies.