Location: Seattle, WA
Remote: Yes
Willing to relocate: Yes, open to SF, NYC for the right role
Technologies: Go, Kotlin, Python, TypeScript, PHP, Java, Cadence Workflows, Kubernetes, GCP, AWS, Postgres, Redis, Kafka, Docker
Résumé/CV: https://www.linkedin.com/in/elninja
Email: josue [at] elninja.com
I'm a backend/platform engineer and developer advocate with over 10 years of experience building systems at scale across startups and growth-stage companies like Uber and DoorDash.
Until earlier this year, I worked at Uber as a Developer Advocate for Cadence — an open-source workflow orchestration engine powering 12B+ workflows/month. I partnered with dozens of teams to support adoption, scale distributed systems, and troubleshoot production issues. Cadence is a key component of Uber's Michelangelo ML platform, and I worked closely with AI/ML teams to integrate it into fault-tolerant pipelines. I also supported internal model training efforts, including fine-tuning LLMs to answer Cadence-related questions and building systems to classify and prioritize developer support.
At DoorDash, I contributed to the migration from Django to Kotlin microservices on the Drive Merchant Services team, focusing on customer support endpoints. I also designed and implemented a modular refund rules engine for our largest partners, enabling flexible refund logic and supporting internal tooling.
I’ve previously built NLP pipelines at Jobscan to match résumés to job descriptions and score resume strength, and earlier, trained models to predict ad performance based on copywriting—my first foray into ML back in 2016.
After wrapping up at Uber, I took the summer off for personal restoration following a divorce. I'm now excited to return to a hands-on engineering role with a collaborative, technically strong team and a path toward engineering leadership (EM or CTO). I'm particularly interested in infrastructure, developer platforms, and applied ML systems in domains like healthcare, logistics, finance, or defense.
Outside of work, I enjoy navigating Puget Sound on my sailboat, wrenching on my motorcycle, and getting curious about obscure systems and trivia. Let’s build something meaningful.
Location: Seattle, WA
Remote: Yes
Willing to relocate: Yes, open to SF, NYC for the right role
Technologies: Go, Kotlin, Python, TypeScript, PHP, Java, Cadence Workflows, Kubernetes, GCP, AWS, Postgres, Redis, Kafka, Docker
Résumé/CV: https://www.linkedin.com/in/elninja
Email: ibarra [dot] josue91 [at] gmail [dot] com
I'm a backend/platform engineer and developer advocate with over 10 years of experience building systems at scale across startups and growth-stage companies like Uber and DoorDash.
Until earlier this year, I worked at Uber as a Developer Advocate for Cadence — an open-source workflow orchestration engine powering 12B+ workflows/month. I partnered with dozens of teams to support adoption, scale distributed systems, and troubleshoot production issues. Cadence is a key component of Uber's Michelangelo ML platform, and I worked closely with AI/ML teams to integrate it into fault-tolerant pipelines. I also supported internal model training efforts, including fine-tuning LLMs to answer Cadence-related questions and building systems to classify and prioritize developer support.
At DoorDash, I contributed to the migration from Django to Kotlin microservices on the Drive Merchant Services team, focusing on customer support endpoints. I also designed and implemented a modular refund rules engine for our largest partners, enabling flexible refund logic and supporting internal tooling.
I’ve previously built NLP pipelines at Jobscan to match résumés to job descriptions and score resume strength, and earlier, trained models to predict ad performance based on copywriting—my first foray into ML back in 2016.
After wrapping up at Uber, I took the summer off for personal restoration following a divorce. I'm now excited to return to a hands-on engineering role with a collaborative, technically strong team and a path toward engineering leadership (EM or CTO). I'm particularly interested in infrastructure, developer platforms, and applied ML systems in domains like healthcare, logistics, finance, or defense.
Outside of work, I enjoy navigating Puget Sound on my sailboat, wrenching on my motorcycle, and getting curious about obscure systems and trivia. Let’s build something meaningful.
Location: Seattle, WA
Remote: Yes
Willing to relocate: No
Technologies: Python, Kotlin, Java, PHP, Laravel, Postgresql, Mysql, AWS (EC2, RDS, ECS, Lambda, etc..), Linux, Kubernetes, Kafka, VueJS, Angular, Node, Typescript, Javascript, full stack
Résumé/CV: https://docs.google.com/document/d/1tYBr4v7HUme1bL7p_ksiFljiEM21Jccs/edit?usp=sharing&ouid=106145294552267002206&rtpof=true&sd=true
Email: ibarra.josue91 at gmail
LinkedIn: https://www.linkedin.com/in/elninja/
I'm a software engineer with 10 years of experience in software development. I've designed and built solutions as an entrepreneur, as a consultant, IC and lead engineer in companies big and small. I have a knack for backend development and strong product management intuition.
Jobscan.co | Seattle | Full time / Onsite | Director of Engineering and Senior Software Engineer Roles
Jobscan is a fast-growing start-up in the heart of historic Pioneer Square, Seattle, WA. Jobscan is web service that helps job seekers land more interviews by using AI to analyze one’s resume or LinkedIn profile against any job description. We're building the next generation of job search tools to make job search easier. We’re user-funded, profitable, and growing exponentially.
We are looking for a Full-Stack Engineer to help build the next generation of job search tools. Our agile development team develops and supports our products top-to-bottom and ship software on a regular basis. A successful candidate will thrive in a fast paced, start-up team environment and is passionate about building software the right way. You’ll be working alongside our engineers, CEO and CTO collaborating on the various layers of the infrastructure to help scale and grow the company.
Jobscan.co | Seattle | Full time / Onsite | Director of Engineering and Senior Software Engineer Roles
Jobscan is a fast-growing start-up in the heart of historic Pioneer Square, Seattle, WA. Jobscan is web service that helps job seekers land more interviews by using AI to analyze one’s resume or LinkedIn profile against any job description. We're building the next generation of job search tools to make job search easier. We’re user-funded, profitable, and growing exponentially.
We are looking for a Full-Stack Engineer to help build the next generation of job search tools. Our agile development team develops and supports our products top-to-bottom and ship software on a regular basis. A successful candidate will thrive in a fast paced, start-up team environment and is passionate about building software the right way. You’ll be working alongside our engineers, CEO and CTO collaborating on the various layers of the infrastructure to help scale and grow the company.
Jobscan.co | Seattle | Full time / Onsite | Senior Software Engineer, Software Engineer
Jobscan is a fast-growing start-up in the heart of historic Pioneer Square, Seattle, WA. Jobscan is web service that helps job seekers land more interviews by using AI to analyze one’s resume or LinkedIn profile against any job description. We're building the next generation of job search tools to make job search easier. We’re user-funded, profitable, and growing exponentially.
We are looking for a Full-Stack Engineer to help build the next generation of job search tools. Our agile development team develops and supports our products top-to-bottom and ship software on a regular basis. A successful candidate will thrive in a fast paced, start-up team environment and is passionate about building software the right way. You’ll be working alongside our engineers, CEO and CTO collaborating on the various layers of the infrastructure to help scale and grow the company.
I remember that happening to a pizza joint in the 90's. It was called something like "Pizza 911" and delivered in a vehicle made to resemble a patrol vehicle.
Canvas is 348x348.
https://gist.github.com/ibarrajo/d5dc106cf226a0f2286e7e959ce...