Senior Backend Engineer – Java & AI Platform

Sofico; Zwijnaarde; Hybride; EUR 70 000 - 100 000; Plein temps

Avantages offerts par ce poste

Hybrid working

Flexible hours

Modern coworking space

Structured onboarding with coach

Team events

Résumé du poste

Sofico is seeking a Senior Backend Engineer to build Java APIs and business workflows connecting our Miles platform with a new Agentic AI platform. You’ll create robust backend solutions, focusing on reliable workflows, validation, and error handling.

You’ll work with AI and workflow engineers on distributed systems and enterprise integrations. Expect a hybrid work model with flexible hours, onboarding coaching, and a modern coworking space.

Qualifications

• Proven experience building backend applications in Java.
• Designing REST APIs, microservices and enterprise integrations.
• Strong knowledge of automated testing (unit/integration).
• Experience building backend systems with complex business workflows and transactions.

Responsabilités

• Build and evolve Java/Quarkus backend services and REST APIs exposing Miles capabilities to AI/automation platforms.
• Design reliable multi-step workflows with validation, transactional behavior and error handling.
• Integrate Miles with the Agentic AI platform, Temporal and other enterprise systems.
• Turn complex business requirements into clean, maintainable, well-tested backend solutions.
• Collaborate with Backend, AI, Workflow Engineers, Business Analysts and Test Automation Engineers end-to-end.

Connaissances

Java backend

REST APIs & microservices

Automated testing

Business workflows

AI in development

Distributed systems

AI/machine integrations

Outils

Quarkus

Temporal

Saga patterns

Event-driven architectures

Description du poste

Why SOFICO?

Want to build the backend systems that allow AI agents to safely perform real business actions?

SOFICO is building its next generation of AI-powered enterprise software. We're looking for a Senior Backend Engineer to build the Java APIs and business workflows connecting our core Miles platform with our new Agentic AI platform.

This isn't about building another chatbot. You'll work on the engineering layer that allows AI agents to safely execute real business processes — with predictable outcomes, strong validation, testing and failure handling.

You'll work primarily with Java, Quarkus, REST APIs and distributed systems, alongside AI and workflow engineers building SOFICO's new AI platform.

“You're already a strong Java backend engineer. Now you can apply that experience to one of Sofico's new Agentic AI platforms.”

What you'll do...

• Build and evolve Java/Quarkus backend services and REST APIs that expose Miles business capabilities to our AI and automation platforms.
• Design reliable multi-step business workflows, including validation, transactional behaviour, error handling and recovery.
• Integrate Miles with our Agentic AI platform, Temporal and other enterprise systems.
• Turn complex business requirements into clean, maintainable and well-tested backend solutions.
• Work closely with Backend, AI and Workflow Engineers, Business Analysts and Test Automation Engineers to build new capabilities end-to-end.

What you bring...

• Strong professional experience building backend applications in Java.
• Solid experience designing and implementing REST APIs, microservices and enterprise integrations.
• Strong understanding of automated testing, including unit and integration testing.
• Experience building backend systems involving business rules, transactions and complex workflows.
• Experience or genuine interest in AI-assisted software engineering: at SOFICO, we actively encourage engineers to bring AI tools (e.g. Claude Code, GitHub Copilot) into every step of the product and software development lifecycle, from specification and planning through implementation and testing, and you should be eager to grow that practice with us
• Experience with Quarkus, Temporal, saga patterns or workflow orchestration.
• Experience with distributed systems or event-driven architectures.
• Experience building backend capabilities for AI, automation or machine-to-machine integrations.

What’s in it for you...

• Competitive salary package;
• Meal allowance provided per working day;
• Company car or mobility budget
• Fully covered private health insurance, so you can focus on what matters most;
• Hybrid working and flexible hours, giving you the freedom to shape your workday;
• A modern co-working space offering a comfortable working environment;
• From day one, you’ll be supported through a structured onboarding program, with guidance from a dedicated coach to help you get up to speed and grow in your role;
• And because strong teams go beyond day-to-day work, we regularly create opportunities to connect — from casual drinks to team activities and company-wide events.

Ready to build the secure and deterministic capabilities behind the next generation of mobility software? Join SOFICO and let’s shape what’s next together!