Senior Software Development Engineer

JiffyShirts.com

. Orchestrate AI coding agents across 3–6 concurrent work streams covering features, refactors, bug fixes, and investigations .

Posted 10/2/2026full-timeMiami • Florida • United StatesSenior💰 $195,000 - $265,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in orchestrating AI coding agents and managing concurrent work streams while ensuring high-quality software delivery. Proficient in scalable system design, code review, and collaboration across cross-functional teams.

Highest-signal resume keywords

AI Coding Agents ExperienceSoftware Design FundamentalsProficiency in Ruby or PythonReact Front-End DevelopmentRelational Database Management

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

AI Coding AgentsSoftware EngineeringObject-Oriented DesignAPI DesignData ModelingDistributed-System ReliabilityRubyPythonReactSQL

Soft Skills

Strong Written CommunicationHigh IntegrityAccountabilityOwnershipCommitment to Excellence

Tools & Technologies

Rails 8SolidusGraphQLKubernetesRSpecVitestPlaywrightPostgresMySQL

Certifications & Qualifications

Bachelor’s Degree in Computer ScienceEngineering or Related Field

Industry Keywords

E-CommerceSoftware DevelopmentProduction SystemsConcurrent Work StreamsTest Coverage

Tech Stack

Tools & technologies

GraphQLJavaKubernetesMySQLPostgresPythonReactRSpecRubyRuby on RailsSQLTypeScriptGo

About the role

Key responsibilities & impact

Orchestrate AI coding agents across 3–6 concurrent work streams covering features, refactors, bug fixes, and investigations
Translate product intent into specifications and agent-executable plans
Drive implementation, critically review every diff, run QA, land pull requests, and verify production health
Design and architect scalable, reliable systems across Rails 8 / Solidus e-commerce, GraphQL APIs, React 19 front end, and Kubernetes infrastructure
Identify and correct hallucinated APIs and enforce secure, idiomatic coding patterns
Build and evolve internal AI tooling, including skills, rules, prompts, MCP integrations, and evaluation harnesses
Contribute to the shared .ai/ skills and rules library
Drive meaningful test coverage using RSpec, Vitest, and Playwright
Monitor deployments, respond to incidents, and own shipped services
Partner with Product, Design, Ops, and engineering teams to define and ship features
Participate in architecture and code reviews
Mentor engineers on AI-native workflows and orchestration patterns
Automate remaining manual QA, operations runbooks, data investigations, and migrations

Requirements

What you’ll need

Bachelor’s degree in Computer Science, Engineering, or a related field
5+ years of professional software engineering experience shipping production systems at scale
Hands-on experience using AI coding agents (Claude Code, Codex, Cursor, or equivalent) as a primary development tool; mandatory
Ability to demonstrate real features, refactors, or investigations delivered through agent orchestration
Ability to run multiple agents in parallel and manage concurrent work streams
Strong software design fundamentals: OO design, API design, data modeling, distributed-system reliability, and performance
Proficiency in at least one server-side language (Ruby, Python, Go, Java, or equivalent)
Proficiency in one modern front-end stack (React / TypeScript or equivalent)
Experience with relational databases (Postgres / MySQL), SQL, and REST or GraphQL APIs
Elite code-review skills
Strong written communication
High integrity, accountability, ownership, and commitment to excellence
Ability and desire to work in a fast-paced, ambiguous, high-autonomy environment
Applicants must be legally authorized to work in the United States without employer sponsorship, now or in the future

Benefits

Comp & perks

Full medical, dental, and vision coverage, with a portion of premiums paid by Jiffy
401(k)
Annual wellness benefits
Choice of MacBook or PC laptop
Equipment for home office setup
Annual credit of $200 to use on Jiffy’s website
Team merchandise drops
Annual professional development stipend
Performance-based bonuses
Equity