Senior Software Development Engineer, Cash & Liquidity

Role overview

This senior backend engineering position sits on a Cash & Liquidity Management team at a global B2B fintech building API-based investing and trading infrastructure. The engineer will design and enhance money-movement platforms that power partner integrations at meaningful scale, blending hands-on platform engineering with financial-domain problem solving. The work spans new system architecture, third-party banking-as-a-service integrations, and automating operational workflows that support modern investing experiences.

Responsibilities

- Build and ship backend features for API-driven money-movement platforms - Collaborate with technology and business stakeholders to scope and deliver solutions - Architect and design new systems alongside the Cash & Liquidity team - Maintain, refactor, and enhance existing services while improving reliability - Integrate vendor banking-as-a-service APIs into the broader platform - Model real-world money-movement workflows and automate manual operational tasks

Requirements

- 7+ years of backend software development using object-oriented or functional principles in Java (Kotlin or Scala also acceptable) - Hands-on experience designing and integrating RESTful APIs - Familiarity with several of: Spring Boot, OpenAPI, message queuing frameworks (AMQ, Kinesis, SQS, Kafka), distributed caching such as Redis, DynamoDB or similar NoSQL stores, and Postgres or similar relational databases - Active development experience in a cloud-based microservices environment on AWS, Google Cloud, or Azure - Experience with compute and container platforms such as AWS EC2 and Kubernetes - Proficiency with Git, GitHub, gitflow, and GitHub Actions, plus disciplined code reviews and automated testing - Solid grasp of distributed-systems architecture tradeoffs and clear verbal and written communication

Nice to have

- Background in financial backend systems - Mentorship experience - Performance tuning experience - Residing in the Eastern time zone

Benefits and work setup

- Open to candidates located in New York City, Chicago, Austin, Dallas, Denver, Miami, the San Francisco Bay Area, or Seattle - NYC and Chicago: hybrid, expected onsite roughly three days per week on a cadence set by the hiring manager - Austin, Dallas, Denver, Miami, San Francisco, and Seattle: fully remote with occasional onsite visits - Remote work cannot be accommodated outside the listed locations - Compensation package eligible for base pay, bonus, equity, 401(k) match, and heavily subsidized benefits and perks - Includes dental, vision, and disability insurance, paid parental leave, wellness reimbursement, company-provided phone, personal development allowance, generous paid time off, and observed holidays - Applicants must already be authorized to work in the United States on a full-time basis; visa sponsorship is not available