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Anthony Mejia

Senior Software Engineer · New York, NY

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Contact and skills

AI Engineering

Agentic Coding Tools, Agent Systems, LLM APIs, Retrieval & RAG, AI Interfaces, Agent Evaluation

Engineering Leadership

Technical Leadership

Front-End Development

TypeScript, React, Next.js, Testing, State Management, WebGL & Animation, Accessibility & Performance

Back-End Development

Node.js, Ruby on Rails, GraphQL, PostgreSQL, Redis, Python, System Design

DevOps and Cloud Infrastructure

Docker Containers, CI/CD, Observability, Cloud Infrastructure

Design Principles and Tools

Design Systems

Experience

Jun 2022 – PresentNew York, NY

Senior Software Engineer

Wysh Life & Health Insurance

  • Transformed our Typescript/React web platform by architecting a dynamic form journey system that reduced our customer bounce rate and increased qualified inbound traffic and conversion.
  • Directed multiple non-core product initiatives that opened new business opportunities by establishing architectural direction and engineering standards across teams.
  • Scaled and future-proofed our Rails platform document generation system supporting regulated workflows through evolving product and compliance requirements.
  • Built developer-facing tooling that standardized workflows, reduced manual effort, and improved engineering and QA validation efficiency across projects.
  • Led adoption of AI-driven tooling and prompt design patterns, enabling teams to apply AI capabilities effectively to business and operational use cases.

Feb 2020 – Jun 2022New York, NY

Software Engineer

Wysh Life & Health Insurance

  • Architected and bootstrapped our TypeScript/React web client, defining frontend architecture while scaling performance and maintainability over multiple years.
  • Established long-term technical direction for the web platform by modernizing state management through migration from Redux to Redux Toolkit.
  • Defined TypeScript interfaces aligned with our Rails GraphQL API schema, enforcing type safety for all queries and mutations requested by our client application.
  • Implemented observability and logging using New Relic, enabling production monitoring, faster issue detection, and data-driven performance decisions.

Jun 2019 – Feb 2020New York, NY

Full-Stack Developer

AD:60

  • Built and shipped a production React and TypeScript frontend paired with a Rails REST API, progressing from storyboard to MVP within 1 quarter.
  • Established frontend engineering standards for our growing engineering team, improving consistency, maintainability, and onboarding for junior peers.
  • Contributed to multiple concurrent financial products across frontend and backend stacks, establishing consistent engineering standards and guiding technical direction across projects.

Jun 2018 – Jun 2019New York, NY

Junior Web Developer

AD:60

  • Architected and delivered a 14-page banking website with complex animation systems and transitions (GSAP), driving a 200% increase in user growth within the first month of our initial production release.
  • Maintained a 97 Lighthouse SEO score while implementing animation-heavy interfaces, balancing accessibility, performance, and visual complexity.
  • Designed and enforced a modular frontend architecture that improved long-term maintainability and was recognized by senior leadership and our client's engineering team.
  • Integrated pivotal features to a Typescript/NodeJS (HapiJS framework) microservice platform while preserving reliability under increasing traffic demands.

March 2018

Education

General Assembly · Web Development Immersive