Are you ready to change the market?We are a product company developing a multi-national debt collection platform using Ruby on Rails / Sinatra and running on AWS. With a fully automated and individually tailored approach, we assess the situation of each debtor individually and thus achieve higher repayment rates without burdening the customer relationship. Our Data and Behavioral Science teams utilize purpose-built Python tools to analyze and enrich our data.Our company has experienced significant growth and we need to continue improving our products and infrastructure to form a reliable foundation for further growth. To drive innovation and enhancement of our AI-based platform, we are looking for you as a passionate and experienced Lead Ruby Developer. In this role you will work with a dedicated tech squad on managing the AI workflow engine and the cloud infrastructure. Become part of our strong and international team that is transforming the traditional collection industry with innovation and a drive for excellence.What you can do with us:Lead and mentor a squad of 5+ software developers, providing technical guidance and support.Conduct regular 1:1s, performance reviews, and support career developmentLead by example with hands-on coding and code reviews, ensuring high code quality and best practices.Foster a collaborative and growth-oriented environment, ensuring clear communication and effective team dynamics.Design, implement, and maintain scalable, high-performance software architectures.Collaborate with the product team to understand and fulfill product roadmap requirements.Work on new features and feature improvements together with internal stakeholders, such as our behavioral and data scientists, workflow engineers, peer Lead Developers, and the dedicated product manager, and oversee the feature's specification, implementation, testing, and go-liveConfigure, maintain and improve deployment infrastructures, server environments and testing infrastructure.Ensure scalability, performance, availability and security of our systems.What you should bring for it:5+ years of relevant work experience within the field of web development and software engineeringExperience managing a team plus ability to motivate developers to deliver great resultsExcellent knowledge of backend and frontend development and technologies, particularly Ruby on Rails, CSS, JavaScript, vue.js; good knowledge in backend infrastructure technologies like Linux, AWS, Continuous Integration/Delivery, DockerSolid understanding of SQL Deep understanding of architecture patterns such as:Message Queue systems (e.g., RabbitMQ, AWS SQS).Pub/Sub systems for decoupled and distributed communication.Event Sourcing for tracking state changes in complex systems.Microservices architecture, including modular and decoupled service layers.Very good communication skills in EnglishTransparency, Execution, Ownership, Customer Centricity, Innovation and Integrity are important to us and we at PAIR Finance embody these values. Do you find yourself in these values? Then become part of our team and complement us with your individual motivation and character!Our offer for you:Thriving, financially stable companyStrong experienced international team to support and mentor you along the way, smooth onboarding processInternational team of 30+ nationalities with professionals and expertsFlat hierarchy, transparent and appreciative feedback culture, monthly all hands meetings, annual feedback and evaluation cycle, regular 1-on-1s with your leadWell-structured onboarding process as well as supportive and welcoming colleaguesPersonal learning & development budget as well as German and English language coursesGood salary for your strong performanceUnlimited employment contract, flexible working hours and 28 vacation days for your work-life balanceCompany pension plan, partly covered Deutschlandticket (public transport) and access to “Corporate Benefits” voucher platform to ensure your full well-beingFun company summer and Christmas parties as well as regular team eventsThis role is based in Berlin, and we have a hybrid working policy. Modern office near Zoologischer Garten is complete with fresh fruit, muesli and drinks for a comfortable and enjoyable workplaceWho is your contact person?Your recruiter for this role is Ekaterina Semenova. For any questions, you can reach us via jobs@pairfinance.com or via 030 120879041.For more information about PAIR Finance, visit and .About usWe are rethinking debt collection with our digital debt collection solution, characterized by our high customer orientation and efficiency standards. By using artificial intelligence, we are combining technology with behavioral science and so we are able to contact customers individually and in a simple way throughout the entire collection process.Strengthened by one of the most renowned private equity firms in the fintech sector, Pollen Street, as well as partnerships with other investors such as Zalando Payments and finleap, PAIR Finance offers an excellent opportunity to dive deep into and actively shape the fintech industry.PAIR Finance is an equal-opportunity employer. We value a diverse team and an inclusive culture. We welcome applications from all qualified individuals regardless of ethnicity, color, religion, gender, sexual orientation, gender identity or expression, age, national origin, marital status, or disability.For more information about PAIR Finance, visit and and Do you want to find out more about PAIR Finance and the position? We are happy to answer your questions and also to receive your application!