Senior Software Engineer – Fintech SaaS Product / Platform

Senior Software Engineer – Fintech SaaS Product / Platform

Location : Washington, DC

Salary : up to $250,000 + Bonus + Benefits

Benefits : Medical, Dental & Vision Insurance, 401k, Paid Holidays, PTO

Job Type : Full-Time | Hybrid – In Office 2x / week

Typical Hours : Monday-Friday, 40 hours / week

Start Date : ASAP

Sponsorship : is not available

Senior Software Engineer – Fintech SaaS Product / Platform Description

Our client in the fintech space is seeking a Senior Software Engineer to join their engineering team in Washington, DC. In this role, you will design and scale secure embedded payment systems that process millions of transactions while ensuring PCI DSS compliance. You’ll contribute to mission‑critical systems that support payment authorization, capture, settlement, and reconciliation. This role is ideal for a well‑rounded software engineer, capable of working with a varied technology stack, across different architectures and application layers. This is a great opportunity to help lead development efforts on a new financial product offering in a collaborative and inclusive team environment.

Senior Software Engineer – Fintech SaaS Product / Platform Responsibilities

• Design secure scalable APIs for payment processing
• Build PCI DSS compliant architecture and workflows
• Develop systems for authorization capture settlement and reconciliation
• Implement fraud detection and payment monitoring tools
• Lead onboarding KYC / AML workflows for merchants and customers
• Create secure tokenization and payment method storage systems
• Develop automated reconciliation processes with banks and networks
• Build payout and dispute management workflows
• Guide product requirements and mentor developers
• Integrate AI models for fraud detection and optimization

Senior Software Engineer – Fintech SaaS Product / Platform Qualifications

Familiarity with event‑driven architectures (e.g., Kafka, RabbitMQ requiredli>

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