Senior Full-Stack Java Engineer - Remote FinTech Payments

Aperia; United States; On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health insurance

401(k)

Paid time off

Parental leave

Education reimbursement

Fitness membership

Job summary

Aperia is seeking a Senior Full Stack Developer to own and deliver secure, high-performance payment systems. You will work across backend Java/Spring Boot and frontend React, in a distributed team spanning cloud and infrastructure.

Qualifications include strong Java/Spring Boot, React, relational DBs, and AWS with IaC. You will contribute to API design, security, testing, and observability, while shaping product and architecture in a fast-growing FinTech environment.

Qualifications

• Bachelor's degree in CS or related field.
• Strong Java/Spring Boot experience in production systems.
• Proficiency with React front-end and REST APIs.

Responsibilities

• Design, build, and maintain secure, scalable payment systems.
• Develop APIs, messaging, and event-driven patterns.
• Lead infra via IaC (Terraform) and AWS deployments.
• Ensure API security (OAuth2/JWT) and testing discipline.
• Collaborate with distributed teams in Agile sprints.

Skills

Java

Spring Boot

React

REST APIs

SQL (MySQL/PostgreSQL)

AWS

OAuth2/JWT

Testing (JUnit/Mockito)

CI/CD

Observability/OpenTelemetry

Distributed systems

Agile/Scrum

Education

Bachelor's Degree in Computer Science

Tools

Terraform

Docker

Git

Job description

Aperia is seeking a Senior Full Stack Developer to own and deliver secure, high-performance payment systems. You will work across backend Java/Spring Boot and frontend React, in a distributed team spanning cloud and infrastructure.

Qualifications include strong Java/Spring Boot, React, relational DBs, and AWS with IaC. You will contribute to API design, security, testing, and observability, while shaping product and architecture in a fast-growing FinTech environment.