Senior Full-Stack Engineer, E-Commerce Platform

• We are looking for a backend-leaning Senior Full-Stack Engineer to help build and evolve the software behind our e-commerce business.
• You’ll work directly with our principal engineer, help shape technical decisions, and modernize a successful platform through thoughtful, incremental improvements.
• This is an opportunity for unusually broad ownership inside a stable, profitable business, not a narrowly defined role maintaining one small service., * Design, build, test, and maintain features across JetPens’ customer-facing e-commerce site and internal business systems.
• Own important work in areas such as checkout, payments, inventory, order processing, fulfillment, and customer communications.
• Understand business problems, evaluate tradeoffs, propose solutions, and carry work through implementation and deployment.
• Investigate difficult problems across application logic, relational data, third-party integrations, and the production environment.
• Improve application performance, reliability, security, observability, and maintainability.
• Modernize the application through carefully scoped changes that preserve stability and business continuity.
• Document systems, operational procedures, and architectural decisions so knowledge remains accessible and useful., * The broader environment includes Linux-based production systems, containerized services, caching and search systems, and integrations with payment providers and other external services.

• A track record of independently designing, shipping, and maintaining significant production web features.
• Strong backend engineering fundamentals in PHP or another server-side language.
• Strong SQL and relational-database skills, including experience investigating performance and data-integrity problems.
• The ability to trace difficult problems across application logic, data, integrations, and the production environment.
• Comfort working with HTML, CSS, and JavaScript while remaining primarily backend-focused.
• Sound technical judgment, including the ability to explain tradeoffs, identify risks, and choose solutions appropriate to the problem.
• Willingness to understand existing code and business behavior before changing them.
• Clear written communication and disciplined documentation habits.

Bonus Points:

• Professional experience developing PHP applications.
• Experience with e-commerce, payment processing, inventory, ERP, or warehouse systems.
• Experience improving database or application performance.
• Familiarity with application infrastructure, caching, search, observability, or security.
• Experience incrementally modernizing a large, mature application.
• Experience working effectively on a small engineering team., * You do not need previous experience with every part of this environment. Strong backend engineering fundamentals and the ability to learn an unfamiliar codebase matter more than matching a checklist of tools.
• Prior PHP experience is helpful but not required, but you must be interested in using PHP as your primary development language.

• Business hours are 9:00 AM PST - 5:30 PM Pacific Time.
• Anticipated starting salary range:

• San Francisco Bay Area, New York City, and Seattle: o $185K - $220K / year.

• Other U.S. locations: o $155K - $220K / year.

• This role may be local or remote.
• Remote employees must maintain at least four hours of overlap with Pacific Time business hours.
• We prefer candidates who can be employed in the United States, but we may consider exceptional international candidates.
• This is an exempt position., * Benefits for eligible U.S. employees include:
• Up to 99% company-paid premiums for health, dental & vision insurance.
• Partial dependent health insurance.
• Health flexible spending account.
• Company-paid long-term disability & life insurance.
• Commuter benefits.
• Benefits for all employees regardless of location include:
• Paid time off.
• Paid company holidays.
• 401(k) retirement plan with 4% company match.

Additional Perks:

• Employee purchase discounts, employee product giveaways, company parties, & free snacks.