Senior Full-stack Software Engineer Java Elasticsearch

DID s.r.l; Varese; Ibrido; EUR 110.000 - 150.000; Tempo pieno

Descrizione del lavoro

DID S.r.l. is seeking a Senior Full-stack Software Engineer for a near-site assignment with a European Institution in Ispra (VA), Italy.

You will own full-stack development across Java backend and frontend, with AI-assisted features and an emphasis on reliability and collaboration. The role requires extensive Java expertise, experience with KendoUI and Elasticsearch, and the ability to work across multicultural teams in a regulated EU environment.

Competenze

• 15+ years IT experience for senior level roles
• Proven skills in Java back-end and enterprise web apps
• Strong front-end capability with modern web tech including KendoUI
• Experience with relational DB design and SQL
• Hands-on with JPA and Hibernate/EclipseLink
• Experience with Elasticsearch and vector DBs / LLM integration
• AI-assisted development tooling and practices
• Experience integrating LLM/RAG in production
• Education in IT-related field
• Languages: Italian and English B2+

Mansioni

• Maintain and evolve the core project-planning information system
• Design and implement features across the stack (DB to front-end)
• Evolve the budget planning module
• Contribute to AI-assisted help system using Elasticsearch and LLM
• Maintain and optimize the Java role-based authorization framework

Conoscenze

Java

Front-end technologies (JavaScript,CSS

KendoUI

Relational databases and SQL

JPA (Hibernate/EclipseLink)

Elasticsearch

AI-assisted development (LLM/RAG)

Elasticsearch + LLM integration

Formazione

IT-related Master's / Bachelor's degree

Strumenti

Git

CI/CD

Descrizione del lavoro

JOB OPPORTUNITY · EU INSTITUTIONS — Senior Full-stack Software Engineer

Java · JPA · KendoUI · Elasticsearch · LLM / RAG · Ispra (VA)

CLIENT: European Institution – research centre, ICT Services unit

PROFILE: Full-stack Software Engineer – Senior level

WORK MODE: Near-site: at least 2 days/week on-site in Ispra (VA), Italy

CONTRACT: Time & Means, specific contract (may be executed in phases)

EXPERIENCE: 15+ years IT (Master's) · 17+ (Bachelor's) · 22+ (diploma)

EDUCATION: IT-relevant Master's / Bachelor's degree, or technical/scientific diploma

LANGUAGES: Italian and English B2 or higher (spoken and written)

MAX RATE: to be agreed

BACKGROUND & MANDATE

DID S.r.l. is looking for a Senior Full-stack Software Engineer for a near-site assignment with a European Institution in Ispra (VA), within the ICT unit that designs, builds and runs the information systems used across the organisation. The consultant will own full-stack development, maintenance and evolution of the "Work Programme" applications area: a portfolio of Java Enterprise web applications for project planning, impact review, collaboration agreements and budget planning, plus a shared role-based authorization toolkit and a new AI assistant built on LLM + RAG. The environment is multicultural and multilingual, with strong emphasis on diligence, discretion and responsibility.

MAIN TASKS

• Core platform: maintain and evolve the core project-planning information system, ensuring long-term stability and maintainability
• New features: design and implement new features across the whole stack, from database design to front-end (data management plans, approval workflows, research-infrastructure features and the transition to the next EU research framework programme)
• Budget planning: evolve the budget planning module (credit re-allocation and redistribution, integration with scientific budget planning)
• AI assistant (LLM + RAG): contribute to the design and development of an AI-assisted help system based on Elasticsearch (NoSQL and vector database) and LLM interaction
• Authorization toolkit: occasional maintenance and performance improvements of the Java role-based authorization framework (rules engine, workflow, admin UI)

SOFT SKILLS

• quick ramp-up on new projects and strong collaboration within teams
• at ease in multilingual meetings, clear communicator
• able to work both in a team and autonomously; results-oriented

WORKING CONDITIONS

• on-site presence in Ispra at least 2 days per week (days set by the client); ad hoc presence may be requested with 2 hours' notice – living within commuting distance is essential
• working days between 8:00 and 19:00, with guaranteed availability 9:30-12:00 and 15:00-16:30 (16:00 on Fridays)
• no service on the Ispra site closure days and Italian public holidays
• start within 3 months of contract signature; monthly progress reports
• no security clearance and no certifications required; signature of the Institution's Ethics reminder and Acceptable Use Policy

SELECTION PROCESS

1. CV in English with the "Software expertise" section filled in (years + self-rating 1-5 for each mandatory skill), linked to your professional experiences.
2. Technical questionnaire: 7 open questions (front-end, Java back-end, databases & Elasticsearch, Git & CI/CD, code quality & testing, AI tools in development, AI integration), max 1,500 characters each. Minimum score 70% overall. Answers must be written personally: the use of AI tools or any external assistance is strictly forbidden and leads to rejection.
3. Possible remote live interview (Teams / Webex, at least 3 working days' notice). Attendance is mandatory and no external help is allowed.

MANDATORY REQUIREMENTS (years and self-rated competence 1-5 must appear in the CV "Software expertise" section, cross-referenced to the relevant professional experiences; candidates not meeting these minimum requirements are rejected)

• Java: 20 years, self-rating 4/5 or higher
• Front-end technologies (JavaScript, CSS, HTML): 20 years, self-rating 4/5 or higher
• KendoUI (with active use within the last year): 15 years, self-rating 4/5 or higher
• Relational databases – data structure design and SQL: 10 years, self-rating 4/5 or higher
• JPA (Hibernate, EclipseLink, ...): 15 years cumulative, self-rating 4/5 or higher
• Elasticsearch – full-text search, Query DSL, fuzzy matching: 6 months in the last 2 years
• AI-assisted software development – at least one complete project within the last year, proven in CV
• Elasticsearch + LLM / vector-database integration project – at least one project, proven in CV

TECHNICAL PROFILE

• Java back-end stack: Spring Boot, Spring Data, JPA implementations; server-side business logic for enterprise web apps
• front-end: JavaScript, HTML, CSS, KendoUI, Angular / Bootstrap, modern build tools (Webpack, Vite), cross-browser UIs
• relational schema design and query optimisation; search and indexing with Elasticsearch
• Git workflows (GitFlow, trunk-based) and deployment via pre-configured CI/CD pipelines
• unit and integration testing, debugging, technical documentationAI-assisted development tools (e.g. Claude Code, Kiro) and AI integration in IT solutions (LLM, RAG, ML-based features); related training is an asset

EDUCATION: IT-relevant Master's / Bachelor's degree, or technical/scientific diploma. EXPERIENCE: 15+ years IT (Master's), 17+ (Bachelor's), 22+ (diploma). LANGUAGES: Italian and English B2 or higher.