Senior Java Engineer - remote, within EU

IESF AG; United States; Remote; USD 96,000 - 165,000; Full time

Benefits offered by this job

Excellent remuneration

Fully remote

Long-term possible

Job summary

IESF AG seeks a Senior Java Engineer for a long-term Contractor (B2B) / Freelancer role. You will craft backend systems, design core logic, and build scalable services with an emphasis on security and performance.

Required 9+ years of backend experience, Java 8+, Spring stack, and AWS familiarity. Remote work offered, with collaboration across EU and US teams. Leadership and documentation duties included.

Qualifications

• Minimum 9 years of professional backend development experience.
• Proven mastery of Java stack with Spring, Spring Boot, Java EE and Hibernate.
• Strong integration skills with OpenID Connect, SSO, REST and SOAP.
• Hands-on AWS cloud development experience and CI/CD lifecycle knowledge.
• Experience with Oracle WebLogic Server, Oracle DB and RDBMS.
• Familiarity with Kafka, ActiveMQ, JMS and messaging APIs.
• Knowledge of procurement and grant management domains is a plus.

Responsibilities

• Develop powerful back-end web applications and APIs.
• Design core business logic and high-performance servers/databases.
• Ensure security, reliability, and cross-platform performance.
• Lead projects from concept through delivery.
• Collaborate on scalable software solutions with teammates.
• Write clear technical documentation and maintain code quality.

Skills

Java 8+

Spring

Spring Boot

Java EE

Hibernate

AWS

REST APIs

SOAP APIs

OpenID Connect

SSO

Kafka

ActiveMQ

JMS

Oracle WebLogic Server

Apache

SSL/TLS

CI/CD

Bamboo

Docker

Git

NoSQL

Angular

TypeScript

English

French

Blockchain

Secunda

IOP IAM

Procurement

Grant Management

Education

University degree in IT

Tools

Docker

AWS

Oracle DB

Oracle Service Bus

Kafka

ActiveMQ

JMS

Git

Job description

Our client is a leading supplier of software products in the field of eCustoms internationally.

The company supplies software products and IT services to European Union Institutions and Agencies, international organisations and national government administrations.

The company employs over 1100 engineers, IT experts and consultants (around 3% PhD, 41% MSc and 54% BSc or equivalent). The group’s staff is multilingual and multinational with in-depth experience in the delivery of services to the government sector worldwide.

Currently we are looking for a Senior Java Engineer to join the team as a long-term Contractor (B2B) / Freelancer.

Tasks

• Craft Cutting-Edge Applications: Develop powerful, efficient back-end web applications that drive our business forward.
• Architect & Build: Design and implement core business logic, creating high-performance servers and databases.
• Enhance Security & Performance: Ensure our systems are secure, reliable, and optimized across multiple platforms.
• API Development: Design and develop APIs that enable seamless communication between systems.
• Collaborate on Scalable Solutions: Work alongside other developers to create scalable software solutions.
• Lead Projects: Take charge of key projects, guiding them from concept to completion.
• Maintain & Improve Code Quality: Keep our codebase organized and pristine while fixing bugs and enhancing functionality.
• Troubleshoot & Optimize: Analyze data, processes, and code to identify areas for improvement and troubleshoot issues.
• Write Documentation: Contribute to creating clear technical documentation for current and future reference.

Requirements

• A university degree in IT
• Expertise in IT: min 9 years of professional experience in development.
• Proven Back-End Skills: Mastery of back-end languages and frameworks, including Java 8+, Spring, Spring Boot, Java EE, and Hibernate.
• Database Proficiency: Solid experience with Oracle Service Bus, Oracle DB, and RDBMS database technology.
• Integration Experience: Deep understanding of OpenID Connect, SSO, and integration techniques.
• Cloud Enthusiast: Hands-on experience with Amazon Web Services (AWS) for cloud development.
• Message Queues & APIs: Expertise in Kafka, ActiveMQ, JMS, and working with REST & SOAP APIs.
• Blockchain Knowledge: Familiarity with blockchain technologies is a big plus!
• Identity & Access Management: Experience with tools like Secunda and IOP IAM.
• Domain Expertise: Advanced knowledge of Procurement and Grant Management business domains.
• Server & Web Configuration: Strong understanding of Oracle WebLogic Server, Apache, SSL/TLS, and reverse proxy configuration.
• CI/CD & DevOps: Practical experience with CI/CD pipelines and tools like Bamboo and Docker.
• Version Control: Knowledge of Git for code versioning.
• Bonus Skills: Experience with NoSQL databases, Angular, TypeScript, and front-end technologies is a plus.
• Language Proficiency: Fluent in English, with proficiency in French being a great advantage.

Benefits

• Excellent remuneration
• Fully remote
• Long-term possible