Freelancer profile translated to English.
Back to original languageAbout Dani
Full-stack Developer
With over 20 years of professional experience, I have worked for all types of companies and in different sectors: Web3, industrial sector, tourism, technology, aeronautics, and R&D. In them, I have held various roles: programmer, software architect, and, in some cases, technical leader and head of the IT department.
More than 5 years ago, I decided to embark on a new chapter as a freelance professional, where I have invested a lot of enthusiasm and commitment.
After several years involved in Web3 and emerging technologies, I have decided to focus on more stable and large-scale Web2 projects, applying my experience to build robust and reliable systems for established companies, such as ‘Indra’, ‘Decathlon’, and ‘Celsa Group’.
The technologies I am most comfortable with include: Go (Golang), NodeJS, Java (Spring), ReactJS, Next.js, React Native, Sencha JS, Javascript, Typescript, Microservices Architecture, etc.
I am comfortable in UNIX / Linux environments and systems.
Regarding databases, the most common are both SQL and noSQL: MySQL, SQL Server, PostgreSQL, CouchDB, CouchBase, MongoDB, and Redis.
Currently, I am collaborating withIndraon a project for air traffic control for the Canadian airport. WithAncert**, I am participating in the maintenance of the PNC application (Notarial Citizen Portal), and I am also collaborating on several projects with **Grupo Celsa,with Level 3 industrial applications.
For more information, please visit my website at: giladev.com
Spanish
Native or bilingual
English
Fluent
Catalan
Native or bilingual
Remote only
Primarily works remotely
Experience
- Giladev - PresenteFreelance Software DeveloperTECHMay 2025 - Today (1 year and 3 months)Palamós, SpainLatest projects:Indra (2026): Air traffic control. New project for Canadian airport. Full-stack: Java Spring Boot + Sencha JS.Celsa Group (2026): Industrial process control. Go (Golang), React, Websockets, Node.js. Microservices architecture, docker, portainer, etc. Projects:- Environmental alarms- Scrap yard entrance access- Smart display- H2O tanks control webapp- Scrap screen control (LVL3)Ancert (2025-2026): Maintenance of the notarial citizen portal app. React Native. Android and iOS.- PNC App (Notarial Citizen Portal).Technology stack: Go (Golang), NodeJS, Java (Spring), ReactJS, Nextjs, React Native, Javascript, Typescript, Sencha JS, CouchDB, MongoDB, MySQL, PostgreSQL, Linux systems, Redis. Microservices architecture.
- Giladev - Etapa Web3Freelance Software DeveloperTECHMay 2021 - Today (5 years and 2 months)Palamós, SpainGuzzu(2021 - 2023): Full-stack. Next.js and Node.js.- Web3 community and platform for music creatorsMintknight(2021 - 2023): API, Node.js, Express. EVM and Near protocol for minting NFTs (Non-Fungible Tokens) and FTs (Fungible Tokens). SDK, CLI, smart contracts, scripting...- Easy minting blockchain tokensDecathlon(2021-2022): Virtual races. Backend algorithms for race calculation, rankings, loyalty programs, etc. Node.js, PostgreSQL.- Decarun Virtual Races Automation**Technology stack**: Web3, NodeJS, ReactJS, Nextjs, Javascript, Typescript, MongoDB, MySQL, PostgreSQL, Solidity, Metamask, Hardhat, Ethers.js, Polygon, Ethereum, Near, Arweave, Linux systems, Redis. Microservices architecture.
- Context ProtocolCore developer at ContextTECHAugust 2022 - April 2024 (1 year and 9 months)Barcelona, SpainContext Protocol is a semantic on-chain data aggregator that redefines the way we interact with and manage data in the decentralized digital landscape. Context Protocol bridges the gap between decentralized storage solutions and semantic understanding, providing a framework where data is not just stored, but also intelligently understood and utilized.I have been fortunate to be involved since the beginning, helping build the core of Context: smart contracts, RPCs and APIs, SDK, CLI, frontends, etc.Currently at backend:- NodeJs and Bun. Typically in Typescript. Git and CI/CD- Testing: jest, mocha, bun- Developing APIs using the Express framework with Swagger documentation (OpenAPI)- Building libraries, SDKs, CLIs and scripting- Working with databases, usually with a preference for NoSQL databases like MongoDB- Smart contracts development:EVM (Ethereum Virtual Machine): Solidity, Polygon, Ethereum, Hardhat, etc.Arweave: TypeScript, WarpNEAR Protocol: FT and NFT, Rust SC and Javascript SDK- Web3 libraries such as ethers.js and Viem- Setup servers, VH, deploy contracts and monitoringCommon at frontend:- ReactJS, Next.js- CSS: tailwind, scss, sass, styled-components, ..- UI: semantic-ui, chakra, daisy-ui- Near: BOS- Metamask, ethers.js, web3js
Reviews
Amador
Decathlon Spain
Reviewed on 3/3/2022
Working with Dani is always a pleasure, he is available for us and delivers added value. Thank you very much Dani, again.
Amador
Decathlon Spain
Reviewed on 10/4/2021
We are working with Dani again, and just like the first time, it's a pleasure to work with him. He integrated as if he were one of the team from day one. We will definitely work with Dani again. Thank you very much!
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Education
- Telecommunications EngineerUPC2000
- Postgraduate in Blockchain EngineeringBlockchain School for Management2021Ethereum & Hyperledger