Junior Software Engineer – Payments

Job not on LinkedIn

🕒 September 4

🇩🇪 Germany – Remote

⏰ Full Time

🟢 Junior

🧑‍💻 Full-stack Engineer

🚫👨‍🎓 No degree required

👻 Ghost score 30%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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instellix

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2016

☁️ SaaS

💳 Fintech

🤝 B2B

SaaS • Fintech • B2B

instellix is an enterprise-grade monetization and billing platform provider that helps businesses launch, manage, and scale digital business models. The company offers SaaS software for subscription management, usage-based and hybrid pricing, billing automation, payment management, accounting & taxes, and reporting & analytics, with APIs and integrations for fast deployment into existing IT landscapes. Instellix targets B2B customers — including manufacturers, mobility, IoT, and SaaS vendors — and emphasizes compliance, security (ISO 27001), and global tax/invoicing support to enable complex, multi-party revenue models across markets.

📋 Description

• Implement and maintain payment-domain microservices using Java, Spring Boot, Gradle, and Kubernetes • Work with relational and NoSQL databases on the backend • Develop frontend applications with React, TypeScript, and Material UI • Apply Clean Code principles • Monitor technical systems through tracking, alerts, and monitoring • Analyze and resolve issues involving payment instructions, settlements, and webhook calls • Support users and Customer Support with technical issues • Develop and maintain automated tests across relevant testing levels • Contribute to operating platform services on Microsoft Azure and Amazon AWS • Collaborate with experienced colleagues, the team, and DevOps

🎯 Requirements

• Initial professional experience in software development • At least solid knowledge of Java • Interest in digital payment and financial processes • Interest in clean system architectures • Interest in learning about Domain-Driven Design, microservices, and hexagonal architecture; practical experience is a plus • Eagerness to learn and commitment to continuous development • Willingness to try new AI-assisted approaches and use AI tools efficiently • Fluent German, at least B2 level • Good command of English

🏖️ Benefits

• 100% remote work within Germany • Opportunity to work remotely from another EU country (workation) • Highly flexible working hours with no core hours • High-performance laptops with your preferred operating system • High-quality equipment for your mobile office • Individual budget for professional development, conferences, training, or specialist literature • Subsidy for sports and fitness activities • Monthly flat-rate allowance for electricity and internet costs when working remotely • Support with occupational pension provision • Employee referral program with an attractive bonus • Freedom to contribute ideas, take responsibility, and put them into practice • Regular team events