About Ezequiel
👋 Hi, I’m Ezequiel — a certified full-stack JavaScript / NodeJS engineer with 15+ years of experience helping startups, SaaS, and micro-SaaS companies build scalable and production-ready digital products.
I’m Node.js certified by the Linux Foundation and an AWS Certified Developer – Associate, with deep experience in backend systems, cloud-native architectures, and developer tooling.
My core strengths:
- MVP development and rapid prototyping
- Scalable Web apps using Node.js, TypeScript, React, Vue.js, and Nuxt
- Backend-for-Frontend (BFF) architecture and API development
- Integration with third-party platforms and services (e.g., Figma, payment providers, CRMs)
- Frontend tooling, performance, and accessibility best practices
- Hybrid mobile development with React Native and Expo
- CI/CD pipelines, DX improvement, and automation
I’ve worked with top companies like Adevinta (Marktplaats), ING, and McDonald's — leading key projects around micro-frontends, internal SDKs, frontend libraries, campaign apps, and cloud infrastructure.
On top of that, I’m a big AI enthusiast actively exploring how to integrate AI tools into development workflows. I’ve worked with tools like Cursor, GitHub Copilot, AWS Bedrock, and Amazon Q Developer to improve productivity, code quality, and delivery speed.
I freelance under my own consultancy brand, Scale Lab Kit. While I often work solo, I collaborate with trusted engineers when projects grow — so you can scale with confidence.
📍 Based in Amsterdam, available for remote work in English or Spanish.
Let’s build something great!
English
Fluent
Spanish
Native or bilingual
Remote only
Primarily works remotely
Experience
- Adevinta (Marktplaats & 2dehands)Senior Frontend EngineerOctober 2022 - Today (3 years and 8 months)Amsterdam, NetherlandsI am part of a cross-functional team where I lead efforts on micro-frontend architecture, shared libraries, and SDK development for both React and Node.js, giving internal teams the tools they need to build consistently and ship faster. I also own the Backend-for-Frontend (BFF) layer, connecting front-end components to our APIs and services in a clean and scalable way.
- McDonald'sFull Stack developerTECHNovember 2018 - November 2019 (1 year)Full stack developer part of a distributed international team working to big clients and high impactprojects.Mc Donald'sIWIN - Internal program for developing the promotional happy meal campaigns applications forweb and GMA (Global McDonalds application - Mobile).-Avengers Campaign 2019-Toy Story Campaign2019-Lion King Campaign 2019-Frozen Campaign 2019- React.js- Redux and Redux Sagas- Atom design methodology for front-end projects- Styled components- Web accessibility- Node.js development
- ING NetherlandsSenior Frontend Engineer (JavaScript SDK Developer)March 2020 - October 2022 (2 years and 7 months)Amsterdam, NetherlandsI focused on building robust and scalable SDKs, internal Node.js libraries, and DevOps automation tools that helped engineering teams work smarter and faster across the company. Most of my work was done in TypeScript, with a strongfocus on code quality and long-term maintainability.Highlights from my time in this role:
- SDKs & Internal Tools: Built and maintained TypeScript-based SDKs, CLI tools, and internal libraries used by multiple
- teams.
- Developer Enablement: Created web components (LitElement, Lion) used in our design system, and supported dev
- teams with tooling, docs, and feedback loops.
- Package Ownership: Fully owned the lifecycle of internal packages—versioning, changelogs, support, and
- documentation.
- Mentorship & Collaboration: Helped onboard and mentor other devs, reviewed pull requests, and contributed to
- architecture decisions.
- CI/CD Automation: Set up and improved pipelines using Azure DevOps, GitLab, and custom scripts in Node.js and Bash.
- Testing Culture: Promoted solid testing practices across unit, integration, and E2E levels, using mocks and clear API
- contracts.
- It was all about making tools that developers actually enjoy using and helping teams move faster with confidence.
Recommendations
Be the first to recommend Ezequiel
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Software engineerUAI - Universidad Abierta Interamericana2016The professional profile of the Computer Systems Engineer that forms the UAI is built on competencies that enable you to manage the technological and human resources of any organization. This training enables you to carry out activities of conception, creative design, development and implementation of complete systems, in the areas of hardware, software, telecommunications, analysis and management.
Certifications
- OpenJS Node.js Certified Application DeveloperLinux Foundation2024
- AWS Certified Developer – AssociateAWS2024