Freelancer: Senior Java Backend Engineer (30y). Microservices, AWS Lambda, IBM Cloud, Multi-cloud. Energy sector background. Remote EU, immediate availability.

Freiberufler / Selbstst�ndiger

Remote-Arbeit

Verf�gbar ab: 17.11.2025

Verf�gbar zu: 100%

davon vor Ort: 5%

Top-Skills

Java

Microservices

AWS

PostgreSQL

Oracle

REST

Docker

Kubernetes

CI/CD

IBM Cloud Functions

Serverless Architecture

Database Design

Git

Linux

UX-Design

Figma

User search

Software Architecture

Multi-Layer Software-Architecture

SwiftUI

Swing

Sprachen

Italian

English

French

Einsatzorte

L�nder

Deutschland, Schweiz, �sterreich

Remote-Arbeit

m�glich

Projekte

1 year 5 months

2024-07 - now

ERP UX Redesign

Freelance Cloud & UX Architect Figma user research information architecture ...

Rolle

Freelance Cloud & UX Architect

Projektinhalte

UX Redesign Project (SaaS/Manufacturing)
- Redesigned legacy ERP interface using Figma + IBM Carbon Design System, reducing user task completion time by ~80% and improving customer satisfaction
Stakeholder Management
- ?Aligned UX decisions with business constraints and technical feasibility; delivered clickable prototypes and developer handoff documentation

Kenntnisse

Figma user research information architecture design systems

Kunde

on request

Einsatzort

Remote EU

1 year

2024-12 - 2025-11

Master Thesis

Portable FaaS Backend with LLM Integration Java Python Serverless Architecture ...

Rolle

Portable FaaS Backend with LLM Integration

Projektinhalte

Portable FaaS Backend with LLM Integration

Designed and implemented a portable serverless backend architecture with LLM integration for help desk automation
Developed working prototypes across AWS Lambda, Azure Functions, IBM Cloud Functions, OpenWhisk and Knative
Focused on cloud-agnostic design patterns, REST API development and PostgreSQL database integration
Achieved 105/110 grade

Kenntnisse

Java Python Serverless Architecture AWS Azure IBM Cloud PostgreSQL REST APIs Docker CI/CD AWS Lambda Azure Functions IBM Cloud Functions OpenWhisk Knative

Kunde

on request

Einsatzort

Remote

2 years 11 months

2021-09 - 2024-07

Large-Scale Data Integration

Senior Java Developer Java Spring Hadoop ...

Rolle

Senior Java Developer

Projektinhalte

Large-Scale Data Integration
- Developed Java/Swing systems for data pipeline processing across enterprise clients
Optimization Impact
- Designed Java library converting IBM DataStage datasets (DSX/XML), enabling 3x faster ETL operations
Data Analytics
- ?Optimized Hive queries on Hadoop clusters, reducing query execution time by 50%

Kenntnisse

Java Spring Hadoop SQL optimization big data

Kunde

Mediatica S.p.A.

Einsatzort

Rome (Italy)

4 years 3 months

2017-07 - 2021-09

Development of production-ready iOS applications

Mobile & Full-Stack Developer Swift iOS REST APIs ...

Rolle

Mobile & Full-Stack Developer

Projektinhalte

Native iOS Apps
- Developed production-grade iOS applications (SwiftUI), following Apple HIG standards
Backend Integration
- ?Built REST APIs and data exchange layers (CSV/XML) between Java systems

Kenntnisse

Swift iOS REST APIs Java

Kunde

Freelance

1 year 11 months

2015-11 - 2017-09

Enterprise Reporting

Java Enterprise Architect Java Oracle Database Korn Shell ...

Rolle

Java Enterprise Architect

Projektinhalte

Enterprise Reporting
- Architected Java + Korn Shell systems for energy sector data integration and batch automation
Database/ Performance
- ?Optimized Oracle stored procedures, enabling monthly reports to complete 4x faster

Kenntnisse

Java Oracle Database Korn Shell Shell Scripting Energy Sector Data Integration Batch Automation Stored Procedures Batch Processing

Kunde

CRIF S.p.A./ENEL

Einsatzort

Bologna

5 years 1 month

2010-11 - 2015-11

Java-Based Production Traceability System

Solutions Engineer Java PostgreSQL System Integration ...

Rolle

Solutions Engineer

Projektinhalte

Traceability System
- Designed & built Java traceability platform (barcode, Bluetooth, weighing scale integration)
Impact
- ?Improved production data accuracy by 95%, reduced manual reconciliation by 80%

Kenntnisse

Java PostgreSQL System Integration Linux Administration Manufacturing IoT Devices RS-232 SSL/TLS Bluetooth Integration Barcode Systems Linux Servers hardware integration IoT SSL security PDF reporting

Kunde

Manufacturing Sector

Aus- und Weiterbildung

2025 (in progress)
Master in Software Engineering
Free University of Bolzano

2020
Bachelor in Interfaces & Communication Technologies
University of Trento

Certifications

Oracle Java Associate Certification
IBM Carbon Design System Certificates (Vue & React)
Cybersecurity Internal Certification

Position

Cloud & UX Architect
AWS Specialist
Enterprise Java Developer

Kompetenzen

Top-Skills

Java Microservices AWS PostgreSQL Oracle REST Docker Kubernetes CI/CD IBM Cloud Functions Serverless Architecture Database Design Git Linux UX-Design Figma User search Software Architecture Multi-Layer Software-Architecture SwiftUI Swing

Schwerpunkte

Core Technical Skills

Cloud & Architecture
- AWS (Lambda, API Gateway, Aurora, DynamoDB), Serverless, Microservices, Domain-Driven Design
Languages
- Java (SE/EE), Python, JavaScript, Bash, Swift, C/C++
Frameworks & Libs
- Spring Boot, React, Vue.js, JSF/PrimeFaces, IBM Carbon Design System, Figma
Databases
- PostgreSQL, Oracle, DynamoDB, Aurora Serverless, DB2, Firebird
DevOps & Tools
- ?Docker, Git, Linux, CI/CD, Apache HTTPD, JBoss, IaC

Produkte / Standards / Erfahrungen / Methoden

Profile
Enterprise architect and full-stack developer with 20+ years architecting and delivering mission-critical systems for Fortune 500 enterprises. Specialized in designing scalable, cost-optimized cloud-native applications, modernizing legacy infrastructure, and crafting intuitive user experiences for SaaS platforms. Proven track record reducing infrastructure costs by 60%+, accelerating time-to-market, and mentoring distributed teams. Available for strategic architecture consulting, hands-on development contracts, and team augmentation.

20+ years in enterprise Java & cloud architecture ? not just coding, but strategic infrastructure design that drives ROI
Proven cost optimization expert ? reduced infrastructure spend by 60% through serverless migration & optimization
Full-stack capabilities ? architecture + backend (Java) + frontend (React/Vue) + UX design = faster time-to-market
SaaS & enterprise experience ? shipped multi-tenant applications, scalability at its core
Self-directed & autonomous ? thrives in remote engagements, clear documentation, minimal oversight needed
Flexible engagement models ? full-time contract, part-time projects, hourly consulting, or retainer

Services & Specializations

Technical Architecture
- AWS-native architecture (Lambda, API Gateway, Aurora Serverless, DynamoDB)
- Serverless & event-driven systems
- Microservices & domain-driven design
- Legacy system modernization & cloud migration
Backend & Development
- Java (SE/EE) enterprise applications, Spring Boot
- API design (REST, async patterns)
- Database optimization (PostgreSQL, Oracle, DynamoDB)
- Infrastructure as Code, CI/CD pipelines
UX/UI & Frontend
- SaaS platform UX design & user research
- React & Vue.js applications
- Design systems (IBM Carbon Design System, Figma)
- ?Information architecture & accessibility

Target Industries

FinTech & Payments ? Compliance, security, high-volume transaction processing
SaaS & B2B Platforms ? Multi-tenant architecture, scalability, user experience
Enterprise & Manufacturing ? Legacy modernization, supply chain, ERP optimization
Energy & Utilities ? Data integration, reporting, grid optimization
Healthcare Tech ? HIPAA compliance, data handling, patient platforms

Engagement Models

Full-time contract engagements
Part-time project-based work
Hourly consulting & code review
Retainer arrangements for ongoing support
Strategic architecture advisory
Available to start immediately, flexible negotiation

Betriebssysteme

Linux

Mac OS

FreeBSD

Solaris

Programmiersprachen

Java

C++

Python

Datenbanken

PostgreSQL

FirebirdSQL

Oracle

DB2 UDB

SqlLite

Design / Entwicklung / Konstruktion

User Search

UX Design

Requirement elicitation

Branchen

Energy & Utilities
Financial Services
Industrial Manufacturing
Agriculture & Food Production
Enterprise Data Integration

Einsatzorte

L�nder

Deutschland, Schweiz, �sterreich

Remote-Arbeit

m�glich

Projekte

1 year 5 months

2024-07 - now

ERP UX Redesign

Freelance Cloud & UX Architect Figma user research information architecture ...

Rolle

Freelance Cloud & UX Architect

Projektinhalte

UX Redesign Project (SaaS/Manufacturing)
- Redesigned legacy ERP interface using Figma + IBM Carbon Design System, reducing user task completion time by ~80% and improving customer satisfaction
Stakeholder Management
- ?Aligned UX decisions with business constraints and technical feasibility; delivered clickable prototypes and developer handoff documentation

Kenntnisse

Figma user research information architecture design systems

Kunde

on request

Einsatzort

Remote EU

1 year

2024-12 - 2025-11

Master Thesis

Portable FaaS Backend with LLM Integration Java Python Serverless Architecture ...

Rolle

Portable FaaS Backend with LLM Integration

Projektinhalte

Portable FaaS Backend with LLM Integration

Designed and implemented a portable serverless backend architecture with LLM integration for help desk automation
Developed working prototypes across AWS Lambda, Azure Functions, IBM Cloud Functions, OpenWhisk and Knative
Focused on cloud-agnostic design patterns, REST API development and PostgreSQL database integration
Achieved 105/110 grade

Kenntnisse

Java Python Serverless Architecture AWS Azure IBM Cloud PostgreSQL REST APIs Docker CI/CD AWS Lambda Azure Functions IBM Cloud Functions OpenWhisk Knative

Kunde

on request

Einsatzort

Remote

2 years 11 months

2021-09 - 2024-07

Large-Scale Data Integration

Senior Java Developer Java Spring Hadoop ...

Rolle

Senior Java Developer

Projektinhalte

Large-Scale Data Integration
- Developed Java/Swing systems for data pipeline processing across enterprise clients
Optimization Impact
- Designed Java library converting IBM DataStage datasets (DSX/XML), enabling 3x faster ETL operations
Data Analytics
- ?Optimized Hive queries on Hadoop clusters, reducing query execution time by 50%

Kenntnisse

Java Spring Hadoop SQL optimization big data

Kunde

Mediatica S.p.A.

Einsatzort

Rome (Italy)

4 years 3 months

2017-07 - 2021-09

Development of production-ready iOS applications

Mobile & Full-Stack Developer Swift iOS REST APIs ...

Rolle

Mobile & Full-Stack Developer

Projektinhalte

Native iOS Apps
- Developed production-grade iOS applications (SwiftUI), following Apple HIG standards
Backend Integration
- ?Built REST APIs and data exchange layers (CSV/XML) between Java systems

Kenntnisse

Swift iOS REST APIs Java

Kunde

Freelance

1 year 11 months

2015-11 - 2017-09

Enterprise Reporting

Java Enterprise Architect Java Oracle Database Korn Shell ...

Rolle

Java Enterprise Architect

Projektinhalte

Enterprise Reporting
- Architected Java + Korn Shell systems for energy sector data integration and batch automation
Database/ Performance
- ?Optimized Oracle stored procedures, enabling monthly reports to complete 4x faster

Kenntnisse

Java Oracle Database Korn Shell Shell Scripting Energy Sector Data Integration Batch Automation Stored Procedures Batch Processing

Kunde

CRIF S.p.A./ENEL

Einsatzort

Bologna

5 years 1 month

2010-11 - 2015-11

Java-Based Production Traceability System

Solutions Engineer Java PostgreSQL System Integration ...

Rolle

Solutions Engineer

Projektinhalte

Traceability System
- Designed & built Java traceability platform (barcode, Bluetooth, weighing scale integration)
Impact
- ?Improved production data accuracy by 95%, reduced manual reconciliation by 80%

Kenntnisse

Kunde

Manufacturing Sector

Aus- und Weiterbildung

2025 (in progress)
Master in Software Engineering
Free University of Bolzano

2020
Bachelor in Interfaces & Communication Technologies
University of Trento

Certifications

Oracle Java Associate Certification
IBM Carbon Design System Certificates (Vue & React)
Cybersecurity Internal Certification

Position

Cloud & UX Architect
AWS Specialist
Enterprise Java Developer

Kompetenzen

Top-Skills

Schwerpunkte

Core Technical Skills

Cloud & Architecture
- AWS (Lambda, API Gateway, Aurora, DynamoDB), Serverless, Microservices, Domain-Driven Design
Languages
- Java (SE/EE), Python, JavaScript, Bash, Swift, C/C++
Frameworks & Libs
- Spring Boot, React, Vue.js, JSF/PrimeFaces, IBM Carbon Design System, Figma
Databases
- PostgreSQL, Oracle, DynamoDB, Aurora Serverless, DB2, Firebird
DevOps & Tools
- ?Docker, Git, Linux, CI/CD, Apache HTTPD, JBoss, IaC

Produkte / Standards / Erfahrungen / Methoden

20+ years in enterprise Java & cloud architecture ? not just coding, but strategic infrastructure design that drives ROI
Proven cost optimization expert ? reduced infrastructure spend by 60% through serverless migration & optimization
Full-stack capabilities ? architecture + backend (Java) + frontend (React/Vue) + UX design = faster time-to-market
SaaS & enterprise experience ? shipped multi-tenant applications, scalability at its core
Self-directed & autonomous ? thrives in remote engagements, clear documentation, minimal oversight needed
Flexible engagement models ? full-time contract, part-time projects, hourly consulting, or retainer

Services & Specializations

Technical Architecture
- AWS-native architecture (Lambda, API Gateway, Aurora Serverless, DynamoDB)
- Serverless & event-driven systems
- Microservices & domain-driven design
- Legacy system modernization & cloud migration
Backend & Development
- Java (SE/EE) enterprise applications, Spring Boot
- API design (REST, async patterns)
- Database optimization (PostgreSQL, Oracle, DynamoDB)
- Infrastructure as Code, CI/CD pipelines
UX/UI & Frontend
- SaaS platform UX design & user research
- React & Vue.js applications
- Design systems (IBM Carbon Design System, Figma)
- ?Information architecture & accessibility

Target Industries

FinTech & Payments ? Compliance, security, high-volume transaction processing
SaaS & B2B Platforms ? Multi-tenant architecture, scalability, user experience
Enterprise & Manufacturing ? Legacy modernization, supply chain, ERP optimization
Energy & Utilities ? Data integration, reporting, grid optimization
Healthcare Tech ? HIPAA compliance, data handling, patient platforms

Engagement Models

Full-time contract engagements
Part-time project-based work
Hourly consulting & code review
Retainer arrangements for ongoing support
Strategic architecture advisory
Available to start immediately, flexible negotiation

Betriebssysteme

Linux

Mac OS

FreeBSD

Solaris

Programmiersprachen

Java

C++

Python

Datenbanken

PostgreSQL

FirebirdSQL

Oracle

DB2 UDB

SqlLite

Design / Entwicklung / Konstruktion

User Search

UX Design

Requirement elicitation

Branchen

Energy & Utilities
Financial Services
Industrial Manufacturing
Agriculture & Food Production
Enterprise Data Integration

Vertrauen Sie auf Randstad

Im Bereich Freelancing

Im Bereich Arbeitnehmer�berlassung / Personalvermittlung

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

Name E-Mail-Adresse Ihre Frage

Telefonnummer Unternehmen

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Einsatzorte

Projekte

Aus- und Weiterbildung

Position

Kompetenzen

Top-Skills

Schwerpunkte

Produkte / Standards / Erfahrungen / Methoden

Betriebssysteme

Programmiersprachen

Datenbanken

Design / Entwicklung / Konstruktion

Branchen

Einsatzorte

Projekte

Aus- und Weiterbildung

Position

Kompetenzen

Top-Skills

Schwerpunkte

Produkte / Standards / Erfahrungen / Methoden

Betriebssysteme

Programmiersprachen

Datenbanken

Design / Entwicklung / Konstruktion

Branchen

Vertrauen Sie auf Randstad

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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