Denise N.-Full-Stack Engineer
Check rate
Experience
AI Training Specialist (Data Annotation)
Outlier
- Evaluate and rank large language model responses for accuracy, clarity, and instruction-following
- Write and refine prompts and ideal responses used to train and fine-tune AI models
- Identify factual errors, hallucinations, and reasoning flaws, providing detailed written rationales
- Apply project-specific rubrics and guidelines consistently under strict quality review
Freelance Full-Stack Developer
devdenise
- Build and deploy Next.js/React websites on Vercel, owning delivery end to end: DNS, per-environment configuration and CI with GitHub Actions
- Built Vinted Analytics, a cross-market analytics tool covering 9 European markets: Python scraper on scheduled GitHub Actions, FastAPI backend, PostgreSQL (Supabase), React/TypeScript frontend
Full-Stack Engineer
Outmatic
- Built ERP integrations between Odoo and .NET backend services, including a Hangfire payment-verification job designed for safe retries
- Worked on a service-based architecture using Azure Service Bus messaging (topics per domain, filtered subscriptions) with idempotent consumers
- Owned the warehouse stock import (EPPlus): add and set operations, full change history, refactored from a 150-line method into small testable units with an xUnit/Moq test suite
- Implemented server-side tracking with Klaviyo, GA4 and Meta Conversions API
- Built React/TypeScript frontends with ChakraUI for a multi-tenant B2B2C e-commerce platform and CMS
DevOps & Test Engineer
Nexum AI
- Designed and implemented CI/CD pipelines using GitLab and automated deployment workflows
- Managed cloud infrastructure on Google Cloud Platform using Terraform and Kubernetes
- Built automation tools with Node.js to streamline development and testing processes
- Configured Helm charts for containerized application deployments
Full-Stack Developer
Technode
- Developed features for an e-commerce platform spanning React frontend and Java backend
- Worked with WebSphere Commerce for enterprise-scale product catalog and order management
- Integrated frontend components with backend APIs and database operations
Full-Stack Developer
Catenate
- Built features for a banking CMS application using Angular frontend and Java (Spring Boot) backend
- Developed secure, compliant solutions for the financial services industry
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Retail, Fashion, and Banking and Finance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Quality Assurance, and Business Intelligence.
Summary
Full-stack engineer with 5+ years of experience, specialized in system integration: connecting ERPs, marketing platforms and internal services so they work reliably together. React/TypeScript frontends, .NET/C# and Java backends, Google Cloud certified with a DevOps background. Now also working in AI training and evaluation, reviewing and improving model outputs.
Skills
- Frontend: React, Next.Js, Typescript, Javascript, Angular, Redux, Chakraui, Tailwind Css, Html5/Css3
- Backend: .Net (C#), Java (Spring Boot), Node.Js, Express.Js, Python (Fastapi), Rest Apis, Entity Framework, Hangfire
- Databases: Sql Server / Azure Sql, Postgresql, Mysql
- Cloud & Devops: Google Cloud Platform, Azure (Service Bus, Azure Sql), Docker, Kubernetes, Terraform, Helm, Gitlab Ci/Cd, Github Actions, Vercel
- Testing: Xunit, Moq, Unit And Integration Testing
- Ai Tooling: Claude Code (Agent-Driven Development With Project Context Files), Llm Output Evaluation
Languages
Education
La Sapienza
Bachelor's · Political Science · Rome, Italy
Certifications & licenses
Google Associate Cloud Engineer
Google Professional Cloud DevOps Engineer
Oracle Certified Associate, Java SE 8 Programmer
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Denise is based in Province of Latina, Italy.
Denise speaks the following languages: Italian (Native), English (Advanced).
Denise has at least 7 years of experience. During this time, Denise has worked in at least 5 different roles and for 6 different companies. The average length of individual experience is 1 year and 2 months. Note that Denise may not have shared all experience and actually has more experience.
Based on recent experience, Denise would be well-suited for roles such as: AI Training Specialist (Data Annotation), Freelance Full-Stack Developer, Full-Stack Engineer.
Denise's most recent position is AI Training Specialist (Data Annotation) at Outlier.
In recent years, Denise has worked for Outlier, devdenise, Outmatic, Nexum AI, and Technode.
Denise is most experienced in industries like Information Technology, Retail, and Banking and Finance. Denise also has some experience in Fashion.
Denise is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Denise also has some experience in Business Intelligence.
Denise has recently worked in industries like Information Technology, Retail, and Fashion.
Denise has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.
Denise holds a Bachelor in Political Science from La Sapienza.
Denise has 3 certificates. These include: Google Associate Cloud Engineer, Google Professional Cloud DevOps Engineer, Oracle Certified Associate, and Java SE 8 Programmer.
Denise is immediately available part-time for suitable projects.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 13 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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