Available to hire
I’m Jeffrey Warner, a frontend engineer with 4+ years of experience building and maintaining modular, accessible web applications using Ember.js, Angular, and Spring Boot. I enjoy delivering scalable features and collaborating across teams to improve UI/UX and accessibility.
I’m currently expanding my frontend skills through personal learning in React and modern web architecture.
Skills
Language
English
Fluent
Javanese
Advanced
Work Experience
AI Trainer at Freelance
February 1, 2024 - PresentAs a freelance AI trainer, I created and reviewed React code prompts to enhance dataset quality and strengthen AI coding capabilities.
Freelance AI Trainer at Remotasks
February 1, 2024 - PresentCreated and reviewed programming prompts to improve AI coding capabilities and dataset quality.
Freelance AI Trainer (Remote)
February 1, 2024 - PresentCreated and reviewed programming prompts to improve AI coding capabilities and dataset quality.
Freelance AI Trainer at Remotasks
February 1, 2024 - PresentCreated and reviewed programming prompts to improve AI coding capabilities and dataset quality.
Software Engineer at LinkedIn
October 1, 2023 - September 26, 2025Built scalable, modular UI components with JavaScript in the Ember.js framework for the LinkedIn Recruiter InMail platform. Integrated generative AI to assist recruiters in message creation, increasing response rates by 50%. Implemented scheduling functionality for InMails and auto follow-up messages, improving candidate engagement by 20%. Resolved a major issue with duplicate messages (reducing occurrences by over 90%) and enhanced accessibility of recruiter inbox with screen reader and keyboard navigation support.
Software Engineer at LinkedIn
October 1, 2023 - September 19, 2025Built scalable, modular UI components with JavaScript in the Ember.js framework for the LinkedIn Recruiter Platform; integrated generative AI to assist recruiters; improved scheduling workflows and candidate engagement; resolved duplicate messages; improved accessibility.
Software Engineer (LinkedIn Recruiter InMail platform) at LinkedIn
October 1, 2023 - September 19, 2025Built scalable, modular UI components with JavaScript in the Ember.js framework for the LinkedIn Recruiter InMail platform. Integrated generative AI to assist recruiters in message creation, increasing response rates by 50%. Implemented scheduling functionality for InMails and automatic follow-up messages, improving candidate engagement by 20%. Resolved duplicate message issues reducing occurrences by over 90%. Enhanced accessibility with screen reader and keyboard navigation support.
Software Engineer at LinkedIn
October 1, 2023 - September 19, 2025Built scalable, modular UI components with JavaScript in the Ember.js framework for the LinkedIn Recruiter InMail platform. Integrated generative AI to assist recruiters in message creation, increasing response rate.
Junior Software Engineer at New Venture Visions Corporation
May 1, 2021 - September 26, 2025Developed responsive web interfaces using Angular and TypeScript to support customer data workflows. Built interactive forms and reusable components for onboarding and partner integrations. Integrated RESTful APIs using Java and Spring Boot to connect with a MySQL backend. Contributed to the architecture of a web-based platform in collaboration with senior engineers.
Junior Software Engineer at New Venture Visions Corporation
May 1, 2021 - September 19, 2025Developed responsive web interfaces using Angular and TypeScript; integrated RESTful APIs with Java and Spring Boot; contributed to architecture of a web platform in collaboration with senior engineers.
Junior Software Engineer at New Venture Visions Corporation
May 1, 2021 - September 19, 2025Developed responsive web interfaces using Angular and TypeScript to support customer data workflows. Built interactive forms and reusable components for onboarding and partner integrations. Integrated RESTful APIs using Java and Spring Boot to connect with a MySQL backend. Contributed to the architecture of a web-based platform in collaboration with senior engineers.
Junior Software Engineer at New Venture Visions Corporation
May 1, 2021 - September 19, 2025Developed responsive web interfaces using Angular and TypeScript to support customer data workflows. Built interactive forms and reusable components for onboarding and partner integrations. Integrated RESTful APIs using Java and Spring Boot to connect with a MySQL backend. Contributed to the architecture of a web-based platform in collaboration with senior engineers.
Education
Bachelor of Science in Computer Science at University of California, Davis
January 1, 2014 - January 1, 2018Bachelor of Science in Computer Science at University of California, Davis
January 1, 2014 - January 1, 2018Bachelor of Science in Computer Science at University of California, Davis
January 1, 2014 - January 1, 2018Bachelor of Science in Computer Science at University of California, Davis
January 1, 2014 - January 1, 2018Qualifications
Industry Experience
Software & Internet, Education, Professional Services, Media & Entertainment, Other, Computers & Electronics
Skills
Hire a Front-End Developer
We have the best front-end developer experts on Twine. Hire a front-end developer in Livermore today.