Senior Full-stack Software Engineer Java Elasticsearch
Pubblicato il 14-10-2026 - DID in Varese
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.
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