Senior Backend Engineer

Senior Backend Engineer (FinTech)

Full Time - In Office Position

About the Role

We are looking for a Senior Backend Engineer to design, build, and scale critical financial infrastructure supporting payment processing and transaction services. You'll play a key role in developing backend systems that power payment operations, integrations, and financial workflows while collaborating closely with engineering leadership in a fast-paced environment.

Responsibilities

• Design and build scalable backend services supporting payment processing, ACH transactions, collections, and disbursements.
• Develop and maintain integrations with banking partners, payment processors, and third-party financial platforms.
• Build and optimize financial infrastructure, including ledgering, reconciliation, and transaction processing.
• Ensure secure handling of sensitive financial data and maintain high standards for system reliability and integrity.
• Develop internal tools and backend services that improve operational efficiency.
• Monitor, troubleshoot, and optimize production systems supporting high-volume financial transactions.
• Collaborate with cross-functional teams to deliver reliable, scalable, and compliant software solutions.

Qualifications

• 5+ years of backend software engineering experience.
• Strong experience with TypeScript, Node.js, and modern backend development.
• Previous experience building fintech, payments, or financial services platforms.
• Solid understanding of ACH payment processing, banking integrations, and payment workflows.
• Experience designing reliable, fault-tolerant distributed systems with a focus on data integrity.
• Familiarity with secure application development and regulated financial environments.
• Strong communication skills with the ability to work independently and within collaborative engineering teams.

Preferred Experience

• Experience with consumer lending or financial technology products.
• Knowledge of NACHA rules, ACH origination, RDFI/ODFI relationships, or payment network operations.
• Experience building payment infrastructure, reconciliation platforms, or transaction processing systems.
• Background working in startup or high-growth technology environments.