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Giacomo – React, Typescript, Node.js, experts in Lemon.io

Giacomo

From United Kingdom (UTC+1)

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Front-end Web DeveloperStrong senior
Back-end Web DeveloperMiddle-to-senior
14 years of commercial experience
Administration
Advertising
AI
Automotive
Blockchain
Business intelligence
Consulting services
Energy
Fintech
Healthcare
Legal tech
Media
Mining and minerals
Renewable energy
Social media
B2B
Chatbots
Enterprise software
Lemon.io stats
1
projects done
104
hours worked
1
ongoing project

Giacomo – React, Typescript, Node.js

Giacomo is a frontend-heavy full-stack engineer with 4 years of experience in the contracting space, specializing in React, Next.js, Node.js, and TypeScript. He is also skilled in AWS services and CI/CD integration and can contribute with his solid technical foundation and strong marketing and business administration background. Giacomo is a former co-founder and team lead with an extensive history of successful startup collaboration!

Main technologies
React
7 years
Typescript
10 years
Node.js
5 years
GraphQL
5 years
AWS
7 years
Next.js
5 years
Additional skills
Python
Apollo GraphQL
JavaScript
Express.js
PostgreSQL
Chat bots
LLM
MongoDB
D3.js
Chart.js
Solidity
React Native
Material UI
Django
Data visualization
OpenAI
Three.js
Blockchain
Tailwind CSS
Apollo Client
Vite
GitHub Actions
Terraform
Sentry
Datadog
CI/CD
Direct hire
Possible
Ready to get matched with vetted developers fast?
Let’s get started today!

Experience Highlights

Software Developer, Team Lead
Apr 2020 - Ongoing5 years 2 months
Project Overview

A global network that connects companies with the world’s top 3% of freelance talent in software development, design, finance, project management, and product management.

Responsibilities:
  • Worked through various engagements in different industries, company sizes, and stages, from early startups to F500 companies, mainly using a React, TypeScript, and Node.js stack.
Project Tech stack:
JavaScript
React
Node.js
Python
AWS
Algorithms and Data Structures
PHP
Full-stack Developer
Feb 2024 - Nov 20249 months
Project Overview

A company pioneering legal innovation by developing Legal AI models, making expert legal advice universally accessible.

Responsibilities:
  • Delivered the UI/UX for a complex system offering legal advisory powered by generative AI and LLMs;
  • Interfaced with several stakeholders, including people with advanced domain knowledge, to speed up the feedback loop and maximize our impact since the design offered was little more than a wireframe;
  • Worked on a model that showed how an uploaded document could be the base for generative-AI-powered legal advice compared to what was offered by querying other reputed LLM competitors like OpenAI.
Project Tech stack:
React
Python
Chat bots
OpenAI API
LLM
Claude LLM
Principle Engineer
Nov 2022 - Feb 20241 year 3 months
Project Overview

An advanced AI-driven platform that enhances business process automation and decision-making through intelligent data analysis.

Responsibilities:
  • Joined the team as one of the first technical hires and helped expand the product across multiple apps, offering B2B financial products in a fast-paced startup environment;
  • Contributed to the development of a scalable and intuitive UI using Next.js and React.js, ensuring a seamless user experience;
  • Implemented optimized APIs and microservices on the back-end to improve performance, scalability, and real-time data processing;
  • Integrated third-party services and AI models to enhance automation and analytics capabilities;
  • Focused on SSR/SSG for better SEO, performance, and fast-loading experiences;
  • Built various applications, including e-commerce platforms, fintech solutions, and AI-powered SaaS products.
Project Tech stack:
React
Node.js
Next.js
Typescript
PostgreSQL
Senior React Front-end Graphics Engineer
Aug 2021 - Dec 20221 year 4 months
Project Overview

A leading web services provider, it offers a comprehensive suite of online products, including mailing, news, finance, sports, and search platforms. Founded in 1994, it began as a web directory and quickly evolved into one of the most recognized internet brands of the early web era.

Responsibilities:
  • Worked on the whole lifecycle of the internal AR/VR platform up to the sunset phase, made critical updates, and supported transitioning clients. This project mainly used JS without any popular UI library.
  • Applied several security updates and fixes to make our platform even more resilient to malicious attacks;
  • Expanded the functionalities with new features, including new types of graphs and advanced data visualization tools for finance; used a React TypeScript stack.
Project Tech stack:
React
Three.js
GraphQL
OpenAI
Typescript
AWS
Algorithms and Data Structures
Data visualization
Tech Lead
Mar 2021 - Jan 202210 months
Project Overview

One of the world's leading integrated energy companies, its website is a global hub for information about the company’s operations, sustainability initiatives, investor relations, and energy innovations. Visitors can explore the company’s wide-ranging activities across oil, natural gas, and increasingly renewable energy sectors such as wind, solar, and hydrogen. The platform also offers insights into its net-zero ambitions, climate goals, and efforts to support the energy transition.

Responsibilities:
  • Helped develop a joint venture between the company and Sumitomo Corporation to facilitate the procurement of large-scale equipment, initially on a blockchain basis, then on an architecture based on more conventional database storage;
  • Organized the work based on requirements collected from different stakeholders and agreed on a joint roadmap for the development of the products;
  • Managed and supported a fast feedback loop iteration of different features and UI/UX components;
  • Created and maintained a large testing suite to ensure proper testing coverage across our applications;
  • Helped recruit and hire hundreds of engineers, collaborating with a very fast-paced hiring pipeline and setting up almost all of the coding challenges administered to our candidates.
Project Tech stack:
React
Jest
Cypress
Ethereum
Solidity
Blockchain
API
AWS
MongoDB
Senior Software Engineer
Aug 2020 - Feb 20216 months
Project Overview

A global social networking platform designed to help people connect, share, and communicate online. Launched in 2004, it allows users to create personal profiles, post status updates, share photos and videos, interact through comments and reactions, and stay connected with friends, family, communities, and public figures. The platform supports many features, including private messaging (via Messenger), groups, events, marketplace, and live streaming.

Responsibilities:
  • Worked in the efficiency team, focusing on a tool to monitor and analyze regressions of the codebase performance—a business-critical need for all products in the Facebook family;
  • Built a modular interface using the Facebook library of core components for advanced data visualizations about mission-critical data;
  • Improved performance monitoring across the company with new reporting tools.
Project Tech stack:
React
Python
C++
Linux
GraphQL
Relay
JavaScript
Data visualization
Typescript
PHP
Senior Software Engineer
Dec 2018 - Dec 2018
Project Overview

A UK-based technology and engineering consultancy that works with organizations across sectors to deliver IT solutions, digital products, and business transformations. The project was a bespoke digital platform developed for major retail, financial services, healthcare, and government clients - the product aimed to modernize legacy systems and improve digital service delivery.

Responsibilities:
  • Delivered quality solutions to the company's clients by collaborating in a multifunctional team to build resource management tools with complex data visualization and manipulation. Another external consultancy led the team;
  • Contributed to refactoring the code to accommodate more complex and scalable data flows to meet rapidly changing specifications;
  • Acted as a bridge between the front-end team and the external designers, vetting and negotiating what was achievable given the current constraints and resources;
  • Assisted with interviewing and selecting candidates to join our team.
Project Tech stack:
Django
Python
React Native
GraphQL
Typescript
Material UI
HTML
TDD
Jest
React
MongoDB
AWS
Senior React Developer
Dec 2017 - Dec 20181 year
Project Overview

A company powering business growth for financial and professional services firms worldwide, through subscription-based digital services.

Responsibilities:
  • Completed the 1st phase of updating and fixing components, including styled components, shared across several products Acuris offers as Node.js packages;
  • Developed the CMS and final user-facing interfaces for a new editorial project using only Redux to manage all the user information and TypeScript to enforce type safety;
  • Championed and helped enforce a modern, thorough test-driven development (TDD) approach using Jest, Enzyme, and the React Testing Library across all the teams.
Project Tech stack:
React
React Native
Django
Python
Node.js
Typescript
Jest
TDD

Education

2009
Innovation Management and Service Engineering
MBA
2008
Marketing and Finance
Master's
2004
Business Administration
Bachelor's

Languages

English
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