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Ruby on Rails Resume

A battle-tested Ruby on Rails Resume template built for senior engineers. Clean, ATS-optimized, and focused on the technical depth hiring managers at companies like Shopify and GitHub actually look for.

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Samuel Zhao

samuel.zhao@outlook.com • +1 (638) 953-1762 • github.com/samuelzhao • linkedin.com/in/samuel-zhao

Education

Georgia Tech May 2018
Bachelor of Science in Computer Science GPA: 3.85/4.0

Technical Skills

Languages: Ruby, SQL (PostgreSQL), JavaScript (ES6+), Go, HTML5, CSS3
Frameworks: Ruby on Rails 6/7, RSpec, Hotwire (Turbo/Stimulus), React, Sidekiq, Hanami
Tools: Redis, Docker, AWS (EC2, RDS, S3), Kafka, CircleCI, New Relic

Professional Experience

Senior Software Engineer June 2021 – Present
Apple Cupertino, CA
  • Architected a high-throughput data ingestion service using Rails and Kafka, handling 50k+ events per second with sub-100ms latency.
  • Optimized PostgreSQL query execution plans for a core reporting dashboard, reducing P95 response times from 2.4s to 450ms for 10k+ concurrent users.
  • Led the transition from a legacy Sprockets pipeline to Vite and Hotwire, improving frontend build speeds by 70% and reducing JS bundle size by 40%.
Software Engineer II July 2018 – May 2021
Shopify Ottawa, Canada
  • Scaled background job processing by implementing a sharded Sidekiq architecture, managing a queue of 2M+ daily jobs without memory exhaustion.
  • Developed a custom Ruby gem for standardized API authentication across 12 internal microservices, cutting integration time for new services by 5 days.

Projects

Rails Performance Toolkit Ruby, PostgreSQL, Redis
  • Built an open-source profiling tool that identifies N+1 queries in real-time during development, currently used by 400+ developers on GitHub.
✓ ATS-Optimized

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Write Bullets That Prove You Understand Scale

Ditch the generic task descriptions and focus on the architectural wins and performance optimizations that define a senior Ruby on Rails Resume.

❌ Vague/Generic

Improved app performance by fixing slow queries in Ruby on Rails.

✓ Impact-Focused

Reduced database CPU usage by 35% during peak traffic by refactoring 15+ N+1 queries and implementing a multi-layer caching strategy with Redis.

Copied!

Why it works: The strong version identifies the specific problem (N+1 queries), the specific tool (Redis), and provides a clear metric (35% CPU reduction).

❌ Task-Focused

Responsible for maintaining the billing system and adding new features.

✓ Results-Driven

Re-engineered the subscription billing logic to support idempotent payments, reducing failed transactions and double-billing incidents by 98%.

Copied!

Why it works: It shows a deep understanding of a critical business domain (billing) and focuses on the reliability of the system rather than just 'doing tasks'.

❌ No Metrics

Updated the Rails application to the latest version.

✓ Quantified Achievement

Managed the zero-downtime upgrade of a monolithic app from Rails 5.2 to 7.0, coordinating 400+ RSpec test fixes across a team of 10 engineers.

Copied!

Why it works: Upgrading Rails is a major project. Quantifying the scale (version jump, test count, and team size) proves the candidate can handle complex migrations.

❌ Passive Voice

New features were developed for the customer dashboard using Hotwire.

✓ Action-Oriented

Eliminated 2,000 lines of legacy React code by implementing Hotwire and Stimulus, resulting in a 25% faster perceived page load for mobile users.

Copied!

Why it works: The strong version uses active verbs and highlights a strategic decision to simplify the stack, which is highly valued by senior reviewers.

Common Questions About Rails Engineering Careers

Practical advice on navigating the current Ruby ecosystem and making your technical experience stand out to elite engineering teams.

Does my Ruby on Rails Resume still need to show frontend skills in 2024?

Yes, but focus on the 'Rails way.' Mentioning Hotwire, Turbo, and Stimulus is often more valuable for Rails roles than just listing React. It shows you understand the modern Rails ecosystem's focus on developer productivity and reduced complexity.

How should I highlight experience with high-traffic systems?

Avoid generic statements. Instead, mention specific tools like Kafka, Redis, or Sidekiq, and quantify the load. Using metrics like 'requests per second,' 'P99 latency,' or 'terabytes of data processed' gives the reviewer a clear picture of the scale you've handled.

What is the most effective way to format a Ruby on Rails Resume for ATS?

Stick to a single-column, standard LaTeX or clean PDF format. Use clear headings like 'Work Experience' and 'Technical Skills.' Avoid graphics, progress bars for skills, or complex tables which can confuse the parsing software used by large companies.

Should I include my GitHub profile if I mostly work on private enterprise code?

If you have open-source contributions or interesting side projects, include it. If not, don't worry. You can demonstrate your expertise by writing highly detailed bullets about the architectural decisions you made in those private repositories instead.

What's a common mistake senior Rails devs make on their resumes?

Focusing too much on 'what' they built (features) and not 'how' they built it (architecture). A senior resume should highlight decisions like choosing between a monolith vs. microservices, database schema design, or how they improved the team's deployment pipeline.

How can I stand out if I don't have experience with the latest Rails 7 features?

Focus on your mastery of Ruby fundamentals and SQL performance. Most enterprise Rails apps are still running on older versions. Proving you can debug complex memory leaks or optimize slow PostgreSQL queries is far more important to a hiring manager than knowing the latest syntax sugar.

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Ruby on Rails Resume LaTeX Code

Copy and paste into Overleaf or your LaTeX editor 

%-------------------------
% Ruby on Rails Resume
% LaTeX Resume Template - Jake's Resume Format
%-------------------------

\documentclass[letterpaper,11pt]{article}

\usepackage{latexsym}
\usepackage[empty]{fullpage}
\usepackage{titlesec}
\usepackage{marvosym}
\usepackage[usenames,dvipsnames]{color}
\usepackage{verbatim}
\usepackage{enumitem}
\usepackage[hidelinks]{hyperref}
\usepackage{fancyhdr}
\usepackage[english]{babel}
\usepackage{tabularx}

\pagestyle{fancy}
\fancyhf{}
\fancyfoot{}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}

% Adjust margins
\addtolength{\oddsidemargin}{-0.5in}
\addtolength{\evensidemargin}{-0.5in}
\addtolength{\textwidth}{1in}
\addtolength{\topmargin}{-.5in}
\addtolength{\textheight}{1.0in}

\urlstyle{same}

\raggedbottom
\raggedright
\setlength{\tabcolsep}{0in}

% Sections formatting
\titleformat{\section}{
  \vspace{-4pt}\scshape\raggedright\large
}{}{0em}{}[\color{black}\titlerule \vspace{-5pt}]

%-------------------------
% Custom commands
\newcommand{\resumeItem}[1]{
  \item\small{
    {#1 \vspace{-2pt}}
  }
}

\newcommand{\resumeSubheading}[4]{
  \vspace{-2pt}\item
    \begin{tabular*}{0.97\textwidth}[t]{l@{\extracolsep{\fill}}r}
      \textbf{#1} & #2 \\
      \textit{\small#3} & \textit{\small #4} \\
    \end{tabular*}\vspace{-7pt}
}

\newcommand{\resumeProjectHeading}[2]{
    \item
    \begin{tabular*}{0.97\textwidth}{l@{\extracolsep{\fill}}r}
      \small#1 & #2 \\
    \end{tabular*}\vspace{-7pt}
}

\newcommand{\resumeSubItem}[1]{\resumeItem{#1}\vspace{-4pt}}

\renewcommand\labelitemii{$\vcenter{\hbox{\tiny$\bullet$}}$}

\newcommand{\resumeSubHeadingListStart}{\begin{itemize}[leftmargin=0.15in, label={}]}
\newcommand{\resumeSubHeadingListEnd}{\end{itemize}}
\newcommand{\resumeItemListStart}{\begin{itemize}}
\newcommand{\resumeItemListEnd}{\end{itemize}\vspace{-5pt}}

%-------------------------------------------
%%%%%%  RESUME STARTS HERE  %%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}

%----------HEADING----------
\begin{center}
    \textbf{\Huge \scshape Samuel Zhao} \\ \vspace{1pt}
    \small samuel.zhao@outlook.com $|$ +1 (638) 953-1762 $|$ github.com/samuelzhao $|$ linkedin.com/in/samuel-zhao
\end{center}

%-----------EDUCATION-----------
\section{Education}
  \resumeSubHeadingListStart
    \resumeSubheading
      {Georgia Tech}{Location}
      {Bachelor of Science in Computer Science}{May 2018}
  \resumeSubHeadingListEnd

%-----------SKILLS-----------
\section{Technical Skills}
 \begin{itemize}[leftmargin=0.15in, label={}]
    \small{\item{
     \textbf{Languages}{: Ruby, SQL (PostgreSQL), JavaScript (ES6+), Go, HTML5, CSS3} \\
     \textbf{Frameworks}{: Ruby on Rails 6/7, RSpec, Hotwire (Turbo/Stimulus), React, Sidekiq, Hanami} \\
     \textbf{Tools}{: Redis, Docker, AWS (EC2, RDS, S3), Kafka, CircleCI, New Relic}
    }}
 \end{itemize}

%-----------EXPERIENCE-----------
\section{Professional Experience}
  \resumeSubHeadingListStart
    \resumeSubheading
      {Senior Software Engineer}{June 2021 – Present}
      {Apple}{Cupertino, CA}
      \resumeItemListStart
        \resumeItem{Architected a high-throughput data ingestion service using Rails and Kafka, handling 50k+ events per second with sub-100ms latency.}
        \resumeItem{Optimized PostgreSQL query execution plans for a core reporting dashboard, reducing P95 response times from 2.4s to 450ms for 10k+ concurrent users.}
        \resumeItem{Led the transition from a legacy Sprockets pipeline to Vite and Hotwire, improving frontend build speeds by 70\% and reducing JS bundle size by 40\%.}
      \resumeItemListEnd

    \resumeSubheading
      {Software Engineer II}{July 2018 – May 2021}
      {Shopify}{Ottawa, Canada}
      \resumeItemListStart
        \resumeItem{Scaled background job processing by implementing a sharded Sidekiq architecture, managing a queue of 2M+ daily jobs without memory exhaustion.}
        \resumeItem{Developed a custom Ruby gem for standardized API authentication across 12 internal microservices, cutting integration time for new services by 5 days.}
      \resumeItemListEnd
  \resumeSubHeadingListEnd

%-----------PROJECTS-----------
\section{Projects}
    \resumeSubHeadingListStart
      \resumeProjectHeading
          {\textbf{Rails Performance Toolkit} $|$ \emph{Ruby, PostgreSQL, Redis}}{}
          \resumeItemListStart
            \resumeItem{Built an open-source profiling tool that identifies N+1 queries in real-time during development, currently used by 400+ developers on GitHub.}
          \resumeItemListEnd
    \resumeSubHeadingListEnd

%-------------------------------------------
\end{document}

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</> SWE Resume

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