Elevate Your

Senior Software Engineer

Building React, TypeScript and Rails products at Wysh Life & Health Insurance.

Based in New York City.

Anthony Mejia

Engineered in NYC

Senior Software Engineer specialized in building high-quality web applications with a focus on performance, scalability, and user experience.

With over 8 years of experience in the tech industry, I have honed my skills in various programming languages and frameworks. My passion lies in creating efficient and innovative solutions that drive business success.

Aerial view of Lower Manhattan's skyscrapers at golden hour, One World Trade Center rising above the Hudson
The Brooklyn Bridge and its stone tower under a clear blue sky with the Manhattan skyline behind
The Brooklyn Bridge from the East River waterfront with clouds and the downtown skyline
A laptop on a dark desk with a code editor open on its screen
Wide panorama of the New York City skyline at sunset over the harbor and Brooklyn
Career · 2018 – Now

Experience

Four roles at two companies, from Junior Web Developer to Senior Software Engineer.

8+ Years

Professional Software Engineering experience

  • Since Jun 2018
  • Four roles
  • Two companies

API Design

Typed GraphQL and REST APIs connecting React clients to Rails services.

  • GraphQL
  • REST
  • React
  • Rails

Backend & Scalability

Scaled and future-proofed a Rails document generation system for regulated workflows, kept a Node.js microservice platform reliable under growing traffic, and added production monitoring with New Relic.

  • Rails
  • Node.js
  • Microservices
  • New Relic

Frontend Architecture

Bootstrapped the TypeScript and React web client and defined its architecture, then modernized its state management with Redux Toolkit.

  • TypeScript
  • React
  • Redux Toolkit

Technical Leadership

Directed non-core product initiatives that opened new business opportunities, and set architectural and technical direction across teams and projects.

  • Product initiatives
  • Architectural direction
  • Cross-team

AI Tooling

Led adoption of AI-driven tooling and prompt design patterns so teams could apply AI to business and operational use cases.

  • AI tooling
  • Prompt design

Engineering Standards

Established frontend engineering standards for a growing team, improving consistency, maintainability and onboarding for junior peers.

  • Standards
  • Architecture
  • Onboarding

Animation & Performance

A 14-page banking site with complex GSAP animation systems and a 97 Lighthouse SEO score, driving a 200% increase in user growth in its first month.

  • GSAP
  • 97 Lighthouse SEO
  • 200% user growth
Related rolesAll four roles

Senior Software Engineer at Wysh Life & Health Insurance

Jun 2022 – Present

Leading Wysh web platform evolution and cross-team initiatives across React/TypeScript and Rails products.

  • 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.

Software Engineer at Wysh Life & Health Insurance

Feb 2020 – Jun 2022

Architected and scaled Wysh's TypeScript/React client while improving platform reliability and safety.

  • 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.

Full-Stack Developer at AD:60

Jun 2019 – Feb 2020

Delivered React/TypeScript frontends with Rails APIs while setting engineering standards across products.

  • 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.

Junior Web Developer at AD:60

Jun 2018 – Jun 2019

Built animation-heavy banking experiences and enhanced NodeJS services while maintaining reliability.

  • 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.