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Leander Vink
Software Engineer · Back-end · PHP · Full-stack
About Me
I started building websites as a teenager when the internet was just arriving in our homes. PHP was my first language — accessible, immediate, and capable of producing real, working things. That curiosity grew into a career building applications across very different environments, from small agencies to large healthcare and insurance organisations.
I care about solutions that are effective, maintainable, and easy for the next person to understand. I enjoy the analytical side of the work — investigating, debugging, refactoring, and supporting systems — and I’m equally happy collaborating in a team or owning a problem end-to-end. I’m always open to new ideas and paradigms, and continuously look for better ways to ship software.
Work Experience
Visma Brincr
Visma Brincr delivers software solutions for retailers, covering stock management, ordering, and invoicing.
- Development and maintenance of retail-focused applications for inventory, procurement, and billing workflows.
- Backend development and API integrations supporting the full order-to-cash cycle.
Enver
Enver is a non-profit youth-care organisation in Zuid-Holland with 2,000+ employees and 10,000+ active clients, formed by the merger of three smaller organisations.
- Development and maintenance of intranet and time-registration applications built on PHP / MySQL and Laravel components.
- CI/CD pipelines based on Bamboo and Bitbucket Pipelines.
- Symfony-based API services synchronising Active Directory, HR systems and the intranet across on-prem and cloud.
- Coded migrations of client data and documents between several electronic client-file systems.
- Built data warehouses for Finance, HR and Control on Python and MSSQL, surfaced through Power BI.
- Worked in Scrum / Kanban with tri-weekly sprints, tracked in Jira and TopDesk.
Care & Able / Trivium Lindenhof
Care & Able developed an in-house Electronic Client File system in collaboration with several care organisations.
- Refactored and upgraded existing functionality toward modern MVC structure and Eloquent ORM.
- Server maintenance on Ubuntu, including upgrading the PHP runtime to a current version.
- Implemented CI/CD to streamline deployments.
- Worked in Scrum / Kanban via Jira.
CAK Groep
CAK Groep is an insurance company with over 100,000 clients across healthcare, motor and other lines of business.
- Automated insurance processes through complex online forms.
- Built an automated suite to generate insurance documents, validate data via external APIs, and send results to administrative systems through a REST/XML service.
- Developed customer-facing online forms in Symfony.
- CI/CD on Bamboo with Debian-based environments.
- Worked in Agile / Scrum with bi-weekly sprints, tracked in Jira.
Studio 11 & Eleven
A web agency delivering everything from informational sites to full webshops for a wide range of clients.
- Application development of small to mid-size websites and webshops.
- Maintenance across many customers in frameworks such as Joomla and Magento.
Technical Skills
PHPPHP 4.3 through 8.2EXPERT
JavaScriptNode.js, npm, React, VueADVANCED
PythonData tooling, transformations with PandasPROFICIENT
OOP & Design PatternsApplied across long-running codebasesEXPERT
Unit TestingTDD with PHPUnitADVANCED
Linux / BashDebian and Ubuntu, desktop and serverEXPERT
FrameworksSymfony, Laravel, JoomlaADVANCED
GitBranching strategies, code review workflowsEXPERT
CI/CDBamboo, Jenkins, Bitbucket PipelinesADVANCED
MySQL / MSSQLModeling, indexing, Doctrine & EloquentADVANCED
Solidity / EthereumHardhat, Chai, OpenZeppelin, ERC20/721/1155, proxiesADVANCED
Web3Ethers.js, Web3, Wagmi, WalletConnectADVANCED
HTML5 / CSSBootstrap, Chakra UIADVANCED
Projects
CryptoR.AT
A cross between ERC721 and ERC1155 where holders customise an NFT with equippable traits using an RPG-style equip system. Base NFTs and trait NFTs trade independently, new traits come from the in-app shop, and a scoring system shares royalties with holders based on the power of their upgradeable NFTs.
SolidityHardhatEthers.jsERC721ERC1155BCH SLPSmartBCHDogeChain
Council of Frogs
An NFT collection with a website and cross-chain bridge. NFTs can be moved between supported EVM chains via a centralised bridge or a decentralised LayerZero bridge.
SolidityLayerZeroEthers.jsDogeChainPolygonShibariumBSCSmartBCH
Education & Certifications
Zend PHP 5.3 Certified Engineer
MBO IT
HAVO — Accent College Groen van Prinsterer
HAVO — Accent College Geuzenplein
Blog
Test
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