Senior Full-Stack Engineer: Scalable Web Solutions

COSMOTE GLOBAL SOLUTIONS NV; Town of Belgium (WI); On-site; USD 120,000 - 180,000; Full time

Job summary

COSMOTE Global Solutions NV in Wisconsin is seeking a highly experienced Full Stack Developer to design, develop, and maintain scalable web applications across front-end and back-end components.

The ideal candidate has a minimum of 12 years in full stack development, strong expertise in Java (Spring Boot), Kotlin, Vert.x, and modern JavaScript frameworks, plus deep knowledge of RESTful APIs, microservices, and secure software practices.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or related field.
• Minimum of 12 years of professional experience as a Full Stack Developer.
• Proficiency in backend technologies such as Java (Spring Boot), Kotlin, Vert.x.
• Experience with frontend technologies including JavaScript, React, Angular, or Vue.js.
• Strong understanding of RESTful APIs, microservices architecture, and API-driven development.
• Experience with databases such as MongoDB, PostgreSQL, Virtuoso Triple Store, and OpenSearch.
• Familiarity with containerization and orchestration tools like Docker and Kubernetes.
• Knowledge of security standards including OpenID Connect, OAuth2, TLS, and Keycloak.
• Experience with security testing tools and dependency management (SAST, DAST, Fortify, SonarQube, Sonatype, Dependency-Track, Maven).
• Excellent problem-solving skills and ability to work effectively in a multicultural and multidisciplinary team environment.
• Strong communication skills and proficiency in English (C1 or higher).
• Familiarity with collaboration tools such as JIRA, Confluence, Office 365, and SharePoint.

Responsibilities

• Design, develop, and maintain scalable web applications both on client-side and server-side.
• Collaborate with cross-functional teams including front-end developers, back-end developers, designers, and product managers to deliver high-quality software solutions.
• Develop user-friendly interfaces and efficient back-end logic using modern frameworks and technologies.
• Implement APIs and services to support front-end functionalities and integrations.
• Optimize applications for maximum speed and scalability.
• Ensure application security and data protection best practices are followed.
• Write clean, maintainable, and well-documented code.
• Troubleshoot, debug, and resolve software defects and issues.
• Participate in code reviews and contribute to continuous improvement processes.
• Stay current with emerging technologies and industry trends to drive innovation.

Skills

Java (Spring Boot)

Kotlin

Vert.x

JavaScript

React

Angular

Vue.js

RESTful APIs

microservices

MongoDB

PostgreSQL

Virtuoso Triple Store

OpenSearch

Docker

Kubernetes

OpenID Connect

OAuth2

TLS

Keycloak

SAST

DAST

Fortify

SonarQube

Sonatype

Dependency-Track

Maven

Education

Bachelor’s Degree in Computer Science, Information Technology, or related field

Tools

Docker

Kubernetes

Maven

OpenSearch

Fortify

SonarQube

Sonatype

Dependency-Track

Job description

COSMOTE Global Solutions NV in Wisconsin is seeking a highly experienced Full Stack Developer to design, develop, and maintain scalable web applications across front-end and back-end components.

The ideal candidate has a minimum of 12 years in full stack development, strong expertise in Java (Spring Boot), Kotlin, Vert.x, and modern JavaScript frameworks, plus deep knowledge of RESTful APIs, microservices, and secure software practices.