Oscar te Giffel

DPG Mediafreelance via Createch

2024 — Present

Senior Frontend Engineer

Brought in to move DPG's frontend off Vanilla JS onto React + Next.js. Pushing the org from components-as-a-service to components-as-a-product. Architecture direction plus hands-on delivery.

Built a video player component library end-to-end as the flagship product.
Page-by-page migration to Next.js — no big-bang rewrite, no feature freeze.
Set up CI/CD and pushed Domain-Driven Design on the Kotlin services behind it.
Coached juniors through review, not rewrite — from ticket-takers to slice owners.

TypeScript React Next.js Kotlin DDD CI/CD

Pixcelium

Jul 2024 — Feb 2026

IT Tech Lead

Early-stage MedTech compliance SaaS. Owned technical direction in a regulated, slow-moving domain — the product made it simple, clear, and fast without slowing the customer's work.

Set the architecture from zero — stack choices, compliance tooling, hiring input.
Product decisions lived between code and regulation.
Shipped an MVP to MedTech customers; the stack held through the first compliance-audited releases.

TypeScript React JVM Node.js

KVKvia HeadFWD

Jun 2021 — Jan 2023

Senior Frontend Developer

Senior lead on seven priority government services used by every business in the Netherlands. Owned frontend architecture, grew the team, pushed back on anything that broke accessibility.

Introduced Domain-Driven Design boundaries; kicked off monolith → micro-frontends.
Modelled multi-step form flows as xState finite state machines — killed whole classes of submission bugs.
Led a team of three frontend engineers and sat on the hiring panel.

TypeScript React Redux xState DDD Jest GitLab SonarQube

HeadFWD

Feb 2021 — Aug 2023

Chapter Lead Frontend · Senior Frontend Engineer

Chapter Lead across HeadFWD's frontend engineers alongside senior client delivery. Grew the technical bar of the discipline through chapter days, internal talks, and hiring input.

Chapter Lead — technical growth, chapter days, internal talks, standards across projects.
Recruitment — owned technical assessment of frontend candidates; aligned interviewers.
Innovation consultant — technical vision and hands-on work on client innovation projects.

TypeScript React Next.js DDD

Polariksvia HeadFWD

Feb 2023 — Present

Senior Fullstack Developer

Data platform giving greenhouse growers insight into their cultivation. Improved both the Scrum process and the product's frontend and BFF.

Strengthened the Scrum process — worked with the team to find and remove bottlenecks.
Built frontend and BFF in TypeScript + React over NestJS GraphQL; added caching and optimised GraphQL relations for heavy data aggregation.
Coached junior developers.

React TypeScript NestJS GraphQL Apollo MUI InfluxDB Kubernetes Terraform

Deloittevia HeadFWD

Mar 2021 — Jun 2021

Senior Frontend Developer

Helped digitise Deloitte's gamified escape rooms — used to raise awareness on privacy, GDPR, and password hygiene.

Conceived, designed, and built several browser games (memory, mastermind variants) in Next.js, TypeScript, React, TailwindCSS.

Next.js React TypeScript TailwindCSS

Yokogawavia HeadFWD

Jul 2019 — Jan 2020

Senior Frontend Developer

Market leader in process-industry technology. Set up and led the frontend for the control screens used on plant devices and computers.

Rebuilt a large part of the application, fully replacing the legacy Django frontend.
Gathered and translated requirements with the product owner and business analysts.
Handled browser compatibility on outdated devices — dropped to vanilla JS where needed — and helped refine the screen designs.

TypeScript React Styled Components jQuery SASS Agile

MoneyMonk

Sep 2016 — Jul 2019

Fullstack Developer

Early engineer at an accounting SaaS; came back later to lay a fresh frontend foundation while the product crossed startup → scale-up.

Migrated the frontend to React + Redux + TypeScript + Tailwind + React Query, module by module.
Moved LAMP onto Docker + Kubernetes; wrote a Spring app to manage the cluster; led the backend shift to Kotlin.
Built Touchpoint, an internal ticketing app, end-to-end with the team.
Moved a React Native mobile app off native modules and added Redux for a large efficiency gain.
Standardised tooling and coding guidelines so new hires ramped fast.

PHP React React Native Redux Node.js Kotlin Spring Docker Kubernetes MySQL Redis

DPG Mediafreelance via Createch

Pixcelium

KVKvia HeadFWD

HeadFWD

Polariksvia HeadFWD

Deloittevia HeadFWD

Yokogawavia HeadFWD

MoneyMonk

Chewpy