Simon Gustavsson · Software Developer

I build things nobody
asked for.

Tag along to see what I'll try to create next one unnecessary project at a time.

CASE STUDIES

Curated

Work

01 / 03

Maillune SaaS / SDK

02 / 03

Yearly portfolios v3 Web App

03 / 03

No Nonsense Budget v1 Web App

SaaS / SDK

Maillune

Maillune is a full-stack SaaS platform and white-label SDK that lets developers embed a drag-and-drop email builder directly into their products. Built with a robust multi-tenant architecture and a focus on developer experience, it has scaled from a complex technical project into a registered company serving real customers.

Engineered a framework-agnostic Web Component (<email-builder>) utilizing Shadow DOM for seamless integration across React, Vue, Angular, and vanilla HTML.
Architected a multi-tenant SaaS dashboard featuring secure JWT/OAuth authentication, API key auto-provisioning, template management, and tiered subscription logic.
Designed the entire brand identity and a dark-mode design system using CSS custom properties shared across both the dashboard and the embedded SDK.

TypeScript

Angular

Node.js

MongoDB

SaaS / SDK

Maillune

Engineered a framework-agnostic Web Component (<email-builder>) utilizing Shadow DOM for seamless integration across React, Vue, Angular, and vanilla HTML.
Architected a multi-tenant SaaS dashboard featuring secure JWT/OAuth authentication, API key auto-provisioning, template management, and tiered subscription logic.
Designed the entire brand identity and a dark-mode design system using CSS custom properties shared across both the dashboard and the embedded SDK.

TypeScript

Angular

Node.js

MongoDB

Web App

Yearly portfolios v3

Every year, I create a new portfolio to challenge and refine my design and technical skills. Each iteration is an opportunity to explore new ideas, tools, and approaches. The page your on is my 2026 portfolio. Read more here. (Hint, press + 3 times)

Designed with a calm and professional visual identity.
Optimized for local business visibility and usability.
Fully responsive and easy to maintain for non-technical users.

TypeScript

Tailwind CSS

GSAP

MongoDB

Angular

Web App

No Nonsense Budget v1

Managing a budget across multiple spreadsheets can quickly become frustrating and time-consuming. Information is hard to keep track of, and manual updates increase the risk of errors. This challenge was the starting point for Nononsense! A solution designed to make budget management simpler, clearer, and more efficient, without the complexity of maintaining countless spreadsheets. Reached 40 active users at its peak.