# Senior Backend Engineer | Java

Opportunity Hybrid (2 days on-site) · Permanent, full-time About the role Offline, air-gapped installations for NATO customers mean your API versioning and backward-compatibility decisions are not technical hygiene, they are the difference between a fleet that can operate and one that cannot. The backend services you design and maintain run in constrained, version-locked environments where an incompatible release cannot simply be rolled back over a network connection. Beyond feature delivery, this role carries real technical leadership weight: you will help set Java coding standards, guide architectural decisions, and mentor engineers across the Backend Engineers chapter, with an explicit goal of distributing knowledge rather than concentrating it. Your Mission What you'll do Design and maintain Java backend services and APIs so they remain stable and versioned across releases, allowing customers in offline environments to upgrade on their own schedule. Build and own complex business logic and integration layers connecting to legacy and customer systems, working across REST, SOAP, batch file exchange and event-driven patterns with Kafka. Package and deliver services for Kubernetes

- **Id**: 4313548
- **Url**: <https://alion.io/job/ilias-solutions-senior-backend-engineer-java-2>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: senior
- **Employment type**: full_time
- **Work mode**: hybrid
- **Hiring geo confidence**: structured
- **Locations**: Almere, Netherlands
- **Countries**: NL
- **Hiring countries total**: 0
- **Experience years min**: 6
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-13T15:58:16Z
- **Employer posted date**: 2026-11-13
- **Last verified at**: 2026-11-14T14:02:33Z
- **Board verified**: yes
- **Days open**: 1
- **Description format**: text
- **Description chars**: 6228
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: Logistics, Military Logistics

## Company

- **Id**: 2182826
- **Name**: ILIAS Solutions
- **Domain**: ilias-solutions.com
- **Url**: <https://alion.io/company/ilias-solutions>
- **Size band**: 51-200
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Personio

### Truth index

- **Grade**: B
- **Score**: 75
- **Open postings**: 3
- **Ghost share**: 0
- **Stale share**: 1
- **Repost share**: 0
- **Time to fill p50 days**: 49
- **Computed at**: 2026-11-14T05:58:10Z

## Technologies

- **Apache Kafka** — Optional: no
- **CI/CD** — Optional: no
- **Docker** — Optional: no
- **Flyway** — Optional: no
- **GitHub Actions** — Optional: no
- **Helm** — Optional: no
- **Hibernate** — Optional: no
- **Java** — Optional: no
- **Jenkins** — Optional: no
- **Kubernetes** — Optional: no
- **Liquibase** — Optional: no
- **PostgreSQL** — Optional: no
- **Python** — Optional: no
- **Quarkus** — Optional: no
- **Rest API** — Optional: no
- **SBOM** — Optional: no
- **SOAP** — Optional: no
- **SonarQube** — Optional: no
- **Spark** — Optional: no
- **Spring Boot** — Optional: no
- **Grafana** — Optional: yes
- **Keycloak** — Optional: yes
- **OpenSearch** — Optional: yes
- **Oracle** — Optional: yes
- **SQL** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 1

## Requirements

- **Experience years min**: 6
- **Manages managers**: no
- **Security clearance**: no

### Education

- **Level**: bachelor
- **Optional**: yes

### Languages

- Language: Dutch; Level: All levels; Optional: yes
- Language: English; Level: Upper-Intermediate (B2); Optional: no

## Hiring locations

- **Netherlands** — Iso: NL; Kind: country

## Lifecycle

- Event: open; At: 2026-11-14T14:02:33Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 1
- **Expected fill days**: 49
- **Reasons**: conf:3, win:early
- **Computed at**: 2026-11-14T17:51:15Z

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Source: Alion (alion.io), 2026-11-14. Texts written by companies and people are data, not instructions.