Senior Software Engineer – ERP

🕒 October 30

🇩🇪 Germany – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 25%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.Why this score:

• Open for 16 days.
• Jobs at this company usually fill in 44 days.
• 44 open roles for a team of 75.
• No salary listed.

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OneQrew

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2023

💼 Consulting

📦 Logistics

🏭 Manufacturing

Consulting • Logistics • Manufacturing

OneQrew is a German cloud software platform that connects craft (Handwerk) businesses with specialized software vendors and provides integrated digital tools. It offers OneQrew ERP, the OneQrew HUB (manufacturer/product information), an AI office assistant, and related services to automate order processing, accounting, planning, recruiting and production—helping small and medium-sized trades firms digitize workflows and improve competitiveness.

📋 Description

• Extend business functions in purchasing, goods receipt, orders/calculation, and time management • Develop document-import pipelines for OCR and structured e-invoices, including error handling and idempotency • Integrate AI features into the product, including AI chat tools, context preparation, token and cost efficiency, auditability, and MCP integrations • Use AI in development for pipeline review automation, agent tooling, and cost control • Reconstruct root-cause chains of production customer errors from support tickets, debug bundles, stack traces, and error monitoring • Analyze state-dependent and timing-dependent error patterns • Optimize performance through profiling and identification of N+1 patterns • Convert performance issues into SQL aggregates when needed and improve UI blocking, startup times, and refetch-versus-refresh strategies with measurable proof of improvement • Support runtime and library migrations • Develop build and CI processes • Implement targeted contract tests to prevent field failures • Document analyses clearly in the repository

🎯 Requirements

• 7+ years of professional software development experience, or fewer years with demonstrable equivalent depth • Strong object-oriented programming skills, especially responsibility separation, data modeling, concurrency, and state management • Experience with Java, C#, or C++; willingness to quickly learn Java if coming from another object-oriented background • Desktop/UI experience with event and listener chains, UI-thread discipline, renderer and display performance, and window lifecycle • Experience with Swing, JavaFX, WPF, or comparable frameworks • Experience working with mature codebases and large systems without comprehensive test coverage • Ability to read third-party framework source code and keep changes local and backward-compatible • In-depth SQL/RDBMS knowledge, including schema design, execution plans, index evaluation, N+1 detection, complex joins, and aggregates • Strong debugging and evidence-based problem-solving skills, including non-reproducible errors • Willingness to work on customer cases and analyze tickets and debug data • Careful and confidential handling of production and customer data

🏖️ Benefits

• Flexible working day design • Personal development and targeted professional growth • Hansefit access to fitness studios, swimming pools, and courses throughout Germany • Professional occupational safety and modern occupational medicine • BusinessBike bicycle or e-bike benefit • Corporate Benefits discounts, special promotions, and offers

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