Senior Full-Stack Engineer - Payments Platform (Flexible)

Apply; Mountain View (CA); Hybrid; USD 170,000 - 210,000; Full time

Job summary

Gen is seeking a Full Stack Engineer to power digital payments across high-traffic platforms. You will design, develop, and optimize full-stack apps with Java/Spring on the backend and React/Vue/Angular on the frontend, while ensuring security and reliability at scale.

You’ll build secure PSP integrations, create robust APIs, and own the entire lifecycle from development to deployment, monitoring and maintenance. Remote-friendly, global delivery across teams is encouraged.

Qualifications

• Strong hands-on experience with Java, Spring, and Spring Boot.
• Frontend proficiency with React, Vue.js, or Angular; HTML5, CSS3, JS/TS.
• APIs across REST, Webhooks, SOAP, GraphQL.
• SQL and NoSQL databases such as Oracle, PostgreSQL, MongoDB, Redis.
• Cloud platforms: Azure and/or AWS; deployment, scaling, managed services.
• Unit tests, integration tests, and automated test suites.
• OO design and common design patterns; Agile/Scrum.
• Global delivery across distributed teams and time zones.

Responsibilities

• Design, develop, and optimize full-stack applications for high-traffic payment platforms.
• Build secure integrations with global PSPs using modern APIs and standards.
• Develop responsive frontend experiences and robust backend services.
• Create lightweight APIs for client, SDK, and cross-team use.
• Maintain QoS and strong security across the stack.
• Tackle end-to-end problems and advocate continuous improvement.

Skills

Java

Spring

Spring Boot

React

Vue.js

Angular

REST

Webhooks

SOAP

GraphQL

SQL

NoSQL

Azure

AWS

Unit testing

Agile/Scrum

OO design

Kubernetes

Docker

CI/CD

Kafka

RabbitMQ

Observability tools

Tools

Docker

Kubernetes

Job description

Gen is seeking a Full Stack Engineer to power digital payments across high-traffic platforms. You will design, develop, and optimize full-stack apps with Java/Spring on the backend and React/Vue/Angular on the frontend, while ensuring security and reliability at scale.

You’ll build secure PSP integrations, create robust APIs, and own the entire lifecycle from development to deployment, monitoring and maintenance. Remote-friendly, global delivery across teams is encouraged.