Senior Backend Kotlin / Java Software Engineer - Client Technology (m/f/x)

Scalable Capital is a leading digital investment and banking platform with a full banking licence, empowering people across Europe to shape their own finances. Scalable Broker makes it easy and affordable for clients to invest professionally in stocks, ETFs, cryptocurrencies, and derivatives, as well as set up savings plans. Scalable Wealth, the digital wealth management service, offers clients professional investment in ETF portfolios, and is also adopted as a white-label solution by banks and other B2B partners. The company’s offerings are rounded off by attractive interest rates, loans, and private equity. With the European Investor Exchange, Scalable Capital offers an exchange specifically for retail investors. Over one million clients have already entrusted more than €50 billion to the platform. Founded in 2014, Scalable Capital now employs over 700 people across Munich, Berlin, Vienna, Milan, and London. Together with the founding and management team, including Erik Podzuweit and Florian Prucker, they are working on a new generation of financial services. Visit our finance blog or check out our Social Media channels to find out what our Expert Teams have to say. Our Company Values guide us every day in how we work and collaborate. To learn more about them, you can find our values here (English). Join our Client Technology Tribe and help us create trusted, seamless, and secure experiences across the entire client journey. Our teams work on products and platforms that support authentication, onboarding, consent management, client engagement, client support enablement, and public web experiences. We also build and maintain systems that ensure secure and compliant processing of client data, while enabling efficient internal operations and high-quality client communication through platforms such as Salesforce. As a (Senior) Kotlin / Java Software Engineer, you will contribute to scalable client-facing and business-critical systems, working closely with product and engineering colleagues across different teams in Client Technology. Depending on team fit and business priorities, your focus may vary across areas such as authentication, onboarding, consent flows, client engagement, client support tooling, and public website experiences. In this role, you will: Build and improve secure, reliable, and scalable systems that support the client journey end to end Design, implement, and operate services in production using Kotlin/Java and modern cloud-native technologies Contribute to authentication, onboarding, consent, engagement, and support-related solutions across Client Technology Work with AWS-based infrastructure and modern DevOps practices to deliver and run services effectively Write clean, testable, maintainable, and well-documented code with a strong focus on security and quality Collaborate closely with engineers, product managers, and other stakeholders to bring meaningful product improvements to production Help drive engineering excellence through strong technical ownership, pragmatic problem-solving, and continuous improvement We are looking for engineers who combine strong software engineering fundamentals with a product mindset and a genuine interest in building trusted client experiences. You bring: A degree in Computer Science, Engineering, or a related field, or comparable practical experience Strong professional experience in software engineering with Java and/or Kotlin Hands-on experience with Spring, REST APIs, GraphQL, JWT, Docker, and Git Experience building and operating microservices in production environments Practical experience with AWS or another major cloud provider Solid understanding of databases, including SQL and ideally NoSQL technologies A strong focus on writing well-architected, testable, maintainable, and documented code Strong analytical thinking in both technical and product-related problem solving Clear, open, and concise communication skills, with professional proficiency in English Nice to have: Experience with authentication, security, consent management, onboarding, or other client trust-related domains Experience with GDPR, KYC, or other regulated-process environments Exposure to Salesforce, client support tooling, or client engagement platforms DevOps experience and confidence working with cloud infrastructure and deployment pipelines Experience in fintech, banking, or other regulated digital product environments Be part of one of the fastest-growing and most visible Fintech startups in Europe, creating innovative services that have a substantial impact on the lives of our customers Work with an international, diverse, inclusive, and ever-growing team that loves creating the best products for our clients Work from our centrally located offices in the heart of Munich or Berlin, nestled in lively neighborhoods filled with vibrant restaurants, cozy cafés, and a wide range of convenient amenities Be productive with the latest hardware and tools Learn and grow by joining our in-house knowledge sharing or career development sessions and spending your individual Education Budget Learn and experience German culture first hand by joining our free German language classes International relocation support is provided if required Opportunity to work from abroad Benefit from an attractive compensation package and from the company pension scheme Monthly contribution of 50% for the ‘Deutschland Jobticket’ Say goodbye to order commissions and say hello to your complimentary subscription of Scalable Capital's PRIME+ Broker Enjoy flexible and discounted sports activities with Urban Sports Club This role can be based in Berlin or Munich and is open to both Software Engineers and Senior Software Engineers, depending on experience and scope. #LI-Hybrid