Senior Software Engineer, Back-End – Payments

🕒 June 25

🏄 California, Florida, +2 more states – Remote

🏄 California – Remote 🐊 Florida – Remote 🏖️ New Jersey – Remote 🤠 Texas – Remote

💵 $141k - $228.9k / year

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

🦅 H1B Visa Sponsor

This company has sponsored H1B visas in the past.

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Collectors

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

💼 Consulting

📣 Marketing

🛍️ eCommerce

Consulting • Marketing • eCommerce

Collectors is a company dedicated to helping collectors pursue their passion for collecting valuable and iconic items. They specialize in authenticating and grading collectibles, including rare baseball cards, coins, and memorabilia. Collectors offers industry-leading authentication and grading services, connecting a community of enthusiasts to help them grow their collections. Their products feature famous collectibles such as Mickey Mantle's 1952 Topps Baseball card, the 1913 Liberty Head nickel, and a Limited Edition Solid 20-karat Gold 20th Anniversary Pikachu. Collectors provides a platform for collectors to connect with others and build the future of collecting.

📋 Description

• Build and evolve multi-gateway payment integrations: Design, implement, and maintain integrations with multiple payment gateway providers — including Stripe, PayPal, and others • Deliver full-stack payment experiences: Develop backend payment services and APIs in C#/.NET while building intuitive customer-facing experiences in React, Svelte, and TypeScript • Champion security, compliance, and resilience: Apply PCI-DSS best practices and resilient design patterns • Take an AI-first approach to building: Leverage AI-assisted development tools throughout the software lifecycle • Architect for scale and observability: Design and operate distributed, event-driven services on AWS and Kubernetes • Drive cross-functional execution: Translate business requirements into technical solutions

🎯 Requirements

• 6+ years engineering experience • Ideally 2+ years operating as a Senior IC or equivalent technical leadership level at a high-growth company or a scaled consumer platform • Deep backend expertise in C# (.NET) • Frontend range in React, Svelte, and TypeScript • Strong fundamentals working with databases and data modeling, both relational (e.g. PostgreSQL) and NoSQL (e.g. DynamoDB) • Familiar with Agile/Scrum methodologies • Payments or fintech experience • Distributed-systems depth • AI-first engineer • Observability-first mindset • Security-minded • Influential communicator • Bias for ownership • Passion for collecting is a plus

🏖️ Benefits

• Health Insurance: All full-time employees are eligible to enroll in Medical, Dental, and Vision • Additional Benefits: Full-time employees are eligible for fertility, commuter, and educational assistance benefits • 401(K) Matching Plan: We are proud to offer a competitive 401k matching plan to our employees to support their future financial goals • Vacation: All salaried employees are eligible for flexible time-off • Holiday Pay: All regular, full-time employees are eligible for ten company paid holidays • Employee Discounts: Employees receive discounts on select grading services for approved submissions • Flexible Hours: Many of our teams offer flexible schedules with varying shifts and will work with you to accommodate your needs • Fun Working Environment: Our team members are invited to participate in celebrations, holiday events, and team building activities