Lead Software Engineer (Typescript/Next.js) (m/f/d)

LeasingMarkt.de; Düsseldorf; Hybrid; EUR 65.000 - 85.000; Vollzeit

Zusammenfassung

A leading leasing platform in Düsseldorf is looking for a Lead Software Engineer to design and develop scalable web applications. You will enhance their codebase, implement solutions, and mentor team members. The ideal candidate is experienced in TypeScript and React/Next.js, and values clean, maintainable code. This role offers flexible working hours with two remote days per week and a modern office environment.

Leistungen

30 days of vacation

Company pension plan

Flexible working hours

Qualifikationen

• Strong experience with TypeScript and modern React / Next.js.
• Experience in software design principles (e.g., SOLID, DRY, KISS).
• Passion for clean, testable, and maintainable code.

Aufgaben

• Improve and extend existing codebase with high code quality.
• Design and implement scalable solutions based on modern principles.
• Drive architectural decisions with a focus on modularity.

Kenntnisse

TypeScript

React / Next.js

server-side rendering (SSR)

static site generation (SSG)

software design principles

CI/CD pipelines

collaboration

Tools

Docker

Kubernetes

AWS

Jobbeschreibung

Lead Software Engineer (Typescript/Next.js) (m/f/d)

About Us

At LeasingMarkt.de, we bring customers and dealers together to make car leasing more accessible, transparent, and efficient. With over 1,000 partner dealerships and nearly 2 million users across the DACH region and the Netherlands, we've become Germany’s #1 leasing platform. To keep growing and driving innovation in the mobility space, we’re looking for a Lead Software Engineer to join our high-performance team at our Düsseldorf office.

As a Lead Software Engineer, you will play a key role in designing and developing robust, scalable web applications that power one of the largest automotive leasing marketplaces in Europe. You'll collaborate with a cross-functional team to build and improve solutions that are not only effective, but also architecturally sound and easy to maintain. You'll help us elevate the standard for software quality, stability, and long-term value.

What You’ll Do

• Improve and extend our existing codebase while maintaining a high standard of code quality and test coverage.
• Design and implement scalable, maintainable, and well-structured solutions based on modern architecture principles.
• Drive architectural decisions with a focus on modularity, clean code, and long-term maintainability.
• Work in an agile, cross-functional team, contributing your ideas and pushing for continuous improvement.
• Set high quality gates for new modules, emphasizing testability and performance.
• Support and mentor other team members.

What You Bring

• Strong experience with TypeScript and modern React / Next.js
• Experience with server-side rendering (SSR), static site generation (SSG), and API routes in Next.js.
• Solid understanding of performance optimization, caching, and CDN strategies.
• Solid understanding of component-based architecture, state management, and modern web APIs
• Deep knowledge of software design principles (e.g., SOLID, DRY, KISS)
• Passion for clean, testable, and maintainable code
• Familiarity with CI/CD pipelines, Git, and agile development practices
• A collaborative mindset and willingness to share knowledge and best practices
• Experience with or openness to PHP (Laravel) is a big plus
• Experience with cloud platforms (especially AWS) and containerization (Docker/Kubernetes) is a plus
• Experience with Tailwind CSS is a plus.

What we offer

• An experienced, friendly team with flat hierarchies and open communication
• Two days of remote work per week and flexible working hours
• 30 days of vacation + Christmas and New Year's Eve off
• Option for “workation”
• Modern office in the heart of Düsseldorf
• Muesli, fruit, and drinks included, including a portafilter machine
• Games corner (PlayStation, Switch, table tennis...)
• Company pension plan, job bike, corporate benefits, and much more