Senior API & Integration Engineer (Remote)

Vast Bank; Tulsa (OK); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Comprehensive benefits package

401(k) match

Tuition assistance

Transit reimbursement

Paid time off

Job summary

Vast Bank is seeking a Senior API & Integration Engineer to design, develop, and secure integrations across core banking, payments, treasury, and digital platforms.

The role emphasizes building reliable APIs, event-driven services, and file-based interfaces, collaborating with IT leadership, Information Security, and vendors to deliver maintainable solutions within approved architecture and risk controls.

Qualifications

• Seven or more years of software engineering or systems integration experience.
• Experience designing and supporting production APIs and integrations.
• Banking or regulated financial services experience preferred.

Responsibilities

• Design, develop, and maintain secure integrations across banking and digital platforms.
• Establish and maintain API contracts, versioning, and security controls.
• Develop automated tests and ensure reliable deployments with CI/CD pipelines.
• Monitor availability and troubleshoot integration incidents; coordinate with teams and vendors.

Skills

C#.NET

Java

Python

TypeScript/Node.js

REST APIs

HTTP

JSON

OpenAPI

Webhooks

SQL

SFTP/file-based integrations

OAuth 2.0

API gateways

Cloud services

Asynchronous messaging

Git

CI/CD pipelines

Automated testing

Monitoring and logging

AWS (serverless)

Infrastructure as code

Containers

FIS Code Connect

Education

Bachelor’s degree in Computer Science, Information Systems, Software Engineering, or related field

Tools

AWS

Code pipelines

OpenAPI tooling

Job description

Vast Bank is seeking a Senior API & Integration Engineer to design, develop, and secure integrations across core banking, payments, treasury, and digital platforms.

The role emphasizes building reliable APIs, event-driven services, and file-based interfaces, collaborating with IT leadership, Information Security, and vendors to deliver maintainable solutions within approved architecture and risk controls.