1 day ago

Senior Software Engineer - Offline

Mendix

Rotterdam

1 day ago

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Senior Software Engineer needed for offline-first application development at Siemens Software in Rotterdam. Requires expert-level JavaScript/TypeScript, data synchronization experience, and 6+ years of professional development. Hybrid work model.

HybridFull-timeSeniorJavaScriptTypeScript

Senior Software Engineer - Offline

Apply

HybridFull-timeSeniorJavaScript

Salary

Not specified

Work Location

Rotterdam, South Holland, Netherlands, NL

Work Model

Hybrid

Experience Required

6 years

Employment Type

Full-time

Experience Level

Senior

Core Qualifications

Technical (Must-have)

JavaScriptTypeScriptOffline-first patternsBrowser storage APIsOrigin Private File SystemService workersData synchronizationConflict detectionConflict resolutionClient-side runtimeServer-side synchronizationDeveloper tooling

Soft Skills

MentoringCollaborationQuality commitmentResponsibility

Preferred Qualifications

Technical (Nice-to-have)

Progressive Web AppsReact NativeWebAssemblyScalaJavaKotlinC#.NETLow-code platformsNo-code platformsJestWebdriverIO

Key Responsibilities

•Design, develop, and maintain offline runtime components and synchronization layers for Mendix applications across web and mobile platforms
•Implement and optimize data synchronization strategies, including conflict detection and resolution mechanisms between offline clients and backend systems
•Collaborate across the full product stack—from client-side runtime code to server-side logic to Studio Pro tooling—to deliver cohesive offline-first experiences
•Mentor team members and contribute to technical architecture decisions that balance complexity with usability for developers and end users
•Participate in code reviews, testing, and quality assurance to ensure robust, performant solutions that meet production standards
•Stay current with emerging web technologies, offline-first patterns, and browser APIs to continuously improve our platform

Senior Software EngineerOffline-firstJavaScriptTypeScriptData SynchronizationMendixHybridSiemensSaaS

Core Qualifications

Technical (Must-have)

Soft Skills

MentoringCollaborationQuality commitmentResponsibility

Key Responsibilities

•Design, develop, and maintain offline runtime components and synchronization layers for Mendix applications across web and mobile platforms

•Implement and optimize data synchronization strategies, including conflict detection and resolution mechanisms between offline clients and backend systems

•Collaborate across the full product stack—from client-side runtime code to server-side logic to Studio Pro tooling—to deliver cohesive offline-first experiences

•Mentor team members and contribute to technical architecture decisions that balance complexity with usability for developers and end users

•Participate in code reviews, testing, and quality assurance to ensure robust, performant solutions that meet production standards

•Stay current with emerging web technologies, offline-first patterns, and browser APIs to continuously improve our platform