Senior Software Engineer, Backend - Payments Platform

United States Digital Space LLC; United States; Hybrid; USD 186,000 - 219,000; Full time

Job summary

United States Digital Space LLC is seeking a Senior Backend Engineer to join the Payments team within our Platform organization. You will design and build scalable backend services for processing high-volume payments and own features end-to-end from design to production rollout.

You will collaborate with Product, Engineering, and cross-functional partners to expand payment capabilities across markets, iterating to improve reliability and performance in a fast-paced environment.

Qualifications

• 5+ years of backend software engineering experience in production services.
• Proficiency in Go or similar languages with API design experience.
• Experience owning features end-to-end in fast-moving environments.
• Experience with financial systems, payments, or high-volume transactional systems.
• Responsible use of generative AI with human oversight.

Responsibilities

• Design and build scalable, fault-tolerant backend services for payment processing using Go.
• Own end-to-end delivery of payment features—from design to deployment and monitoring.
• Build platform primitives and self-serve APIs for adding new payment methods and rails.
• Partner with engineers, product managers, and leadership to translate product vision into technical plans.
• Improve system reliability, observability, and performance across payment services.
• Contribute to engineering quality through code reviews and design discussions.

Skills

Go

APIs design

Distributed systems

Feature ownership

Financial systems

Education

Bachelor's degree in CS or equivalent

Job description

Ready to do the most impactful work of your career? Atthe company, we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. the company is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.”learn more about working at the company.

We're hiring a Senior Software Engineer to join the Payments team within the Platform organization. The Payments team builds the infrastructure, workflows, and APIs that power fiat on- and off-ramps for millions of consumers and institutional customers globally, across payment rails, partner integrations, and funds-flow systems. We are turning that stack into an API-driven platform, a Stripe-like product for the company's own Retail, Institutional, and Developer teams, so a new payment method or rail can go live in a fraction of the time it takes today. Our north star is payment success rate: the share of attempted payments that move safely and reliably, end to end. You'll design and build scalable backend systems that process high-volume payment traffic, working closely with Product, Engineering, and cross-functional partners to expand the company's payment capabilities into new markets and corridors.

What you’ll do:

• Design and build scalable, fault-tolerant backend services for payment processing using Go, ensuring high reliability and correctness for financial transactions at scale
• Own end-to-end delivery of payment features, from technical design through production deployment, monitoring, and iteration
• Build the platform primitives, extension points, and self-serve APIs that let other the company teams add new payment methods and rails without deep changes to the core services
• Partner with engineers, product managers, and senior leadership to translate product vision and business requirements into technical plans each quarter
• Drive improvements to system reliability, observability, and performance across payment services, proactively identifying and resolving bottlenecks
• Contribute to engineering quality through thoughtful code reviews, design discussions, and advocacy for best practices in service-oriented architecture

Required Skills and Experience:

• 5+ years of experience in backend software engineering, with hands-on experience building and maintaining production services in a service-oriented or microservices architecture
• Proficiency in Go or similar backend languages, with experience designing scalable, low-latency APIs and distributed systems
• Track record of owning features end-to-end, from design through deployment and production support, in a fast-moving environment
• Experience with financial systems, payments infrastructure, or high-volume transactional systems that require precision and auditability
• Utilizes generative AI responsibly, maintaining human oversight to deliver business-ready outputs and drive measurable improvements in workflow efficiency, cost, and quality

Pay Transparency Notice: Base salary varies by location (see range below). Total compensation may also include equity and bonus eligibility, and benefits (medical, dental, vision, 401(k)).

Annual base salary range (excluding equity and bonus):

$186,065—$218,900 USD