Software Development Engineer

About the role

Jiffy.com is seeking a Software Development Engineer to lead the delivery of end-to-end features across our e-commerce platform, from storefront and checkout to internal tools and platform services. Reporting directly to an Engineering Manager, you will orchestrate AI coding agents (Claude Code, Codex, Cursor) to ship production software at pace.

Responsibilities

• Orchestrate AI coding agents across 3-6 concurrent work streams spanning features, refactors, bug fixes, and investigations using worktrees, sub-agents, and background tasks to maximize parallel throughput
• Own features end-to-end: translate product intent into clear specifications, decompose work into agent-executable plans, drive agents through implementation, review every diff critically, run QA, land PRs, and verify production health
• Design and architect scalable, reliable systems across our stack (Rails 8 / Solidus e-commerce, GraphQL APIs, React 19 front end, Kubernetes infrastructure)
• Raise the quality bar on AI-generated code by catching hallucinated APIs, enforcing secure and idiomatic patterns, and pushing back on output that is technically working but structurally wrong
• Build and evolve Jiffy's internal AI tooling: author skills, rules, prompts, MCP integrations, and evaluation harnesses that make the whole engineering org faster. Contribute to our shared .ai/ skills and rules library
• Operate with production rigor: drive agents to produce meaningful test coverage (RSpec, Vitest, Playwright), monitor deploys, respond to incidents, and fully own the services you ship
• Partner cross-functionally with Product, Design, Ops, and peer engineering teams to define and ship features; participate in architecture and code reviews; mentor engineers on AI-native workflows and orchestration patterns
• Identify where remaining manual work can be replaced by agents, and automate it

Requirements

• 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
• Proven ability to run multiple agents in parallel and manage concurrent work streams without losing quality, context, or accountability
• 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) and one modern front-end stack (React / TypeScript or equivalent)
• Elite code-review skills: the ability to read, critique, and correct diffs at speed is the core competency of an AI-first engineer
• Strong written communication: clear intent, clear PR descriptions, clear prompts. In an AI-first org, writing is the programming interface
• A high level of integrity, accountability, and ownership, with a commitment to excellence across every deliverable
• Desire to work in a fast-paced, ambiguous, high-autonomy environment

Qualifications

• 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
• Proven ability to run multiple agents in parallel and manage concurrent work streams without losing quality, context, or accountability
• 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) and one modern front-end stack (React / TypeScript or equivalent)
• Elite code-review skills: the ability to read, critique, and correct diffs at speed is the core competency of an AI-first engineer
• Strong written communication: clear intent, clear PR descriptions, clear prompts. In an AI-first org, writing is the programming interface
• A high level of integrity, accountability, and ownership, with a commitment to excellence across every deliverable
• Desire to work in a fast-paced, ambiguous, high-autonomy environment

Benefits

• Base compensation: $170,000 - $220,000 per year
• Comprehensive Benefits: Full medical, dental, and vision coverage, with a portion of premiums paid by Jiffy
• Retirement Planning: 401(k)
• Wellness Support: Annual wellness benefits to help you stay healthy and balanced
• Tools for Success: Choice of MacBook or PC laptop, plus equipment for your home office setup
• Perks & Extras: Annual credit of $200 to use on our website plus more team merch drops than you will know what to do with!
• Professional Development: Annual stipend to support your learning and career growth