Senior Backend Engineer - Germany

About KLAR Let's start with the basics! Klar is a Mexican fintech startup whose mission is to democratize and revolutionize the way in which financial services have been delivered so far in Mexico, especially since half of the population doesn't have a bank account. We offer a rich set of products across our debit and credit offers and the future is bright for Klar! We have an exciting and ambitious roadmap to bring more features to our products so that we can better serve our users. We have served more than 7 million users since our launch in 2019 — and we're just getting started. Most recently, we partnered with Uber to launch their first global credit card, right here in Mexico; a testament to the trust we've built with world-class partners and the strength of our infrastructure, team, and product. We are also proud to have been certified in 2023 as a " Great Place to Work " in Mexico — we've worked hard to make that happen and will continue to make bigger strides in the future! Sound like a place you’d like to be? Our people If you join us at Klar, you’ll be welcomed into a team which is rich in many talents and we are very proud! With our head office in Mexico City, and remote tech hubs in Berlin and Argentina, we are always learning something new about another culture or language. With so many people from different backgrounds and walks of life (parents, LGBTQ+, neurodivergence), you’ll definitely find your people here! Our values Ownership - We own our successes & our failures as a team. Excellence - We do everything to the best of our ability & always seek to achieve a new level of excellence in our work. Inclusion - We believe we are stronger together and actively work to promote a safe, diverse, inclusive, and respectful culture. Customer Obsession - We understand the value Klar can bring to its customers & it’s always at the forefront of our decisions. Klarity - We communicate clearly & with authenticity. It’s in our name & it’s what we do. About the Role This is a full-time remote opportunity for candidates based in Germany. You’ll join a new backend team within a newly established business division at Klar, where we’re expanding capacity to support the launch of additional products and services. As a fintech, Klar operates in a fast-paced, dynamic, and low-hierarchy environment where individual contributors are encouraged to take ownership, influence technical direction, and have a meaningful impact on the business. In this role, you’ll work on core backend services and scalable platform capabilities that help reduce the cost of digital banking while supporting Klar’s continued growth in the financial services industry. You’ll collaborate closely with product and engineering leaders, contribute to architectural decisions, and help shape the evolution of a critical platform from an early stage. What you can expect: Write correct, efficient, clean, robust, and maintainable code (Mostly in Java 21+) Write unit, integration, and end-to-end tests to prevent current errors or future regressions Participate in code review to learn from others and to teach them as well Prototype new technologies and libraries that could save time and effort Write clear and concise documentation for users of your systems Identify common problems between multiple systems and develop common solutions via libraries Create designs for new systems and features of moderate complexity Make time estimates to implement designs that can aid in future planning Mentor junior engineers What we are looking for: You are a senior engineer with experience in architecture, design, implementation and deployment of business critical systems. You are passionate about simplifying complex problems with innovative solutions which increases efficiency and saves cost. At least 5 years of experience with several of the following development technologies: Java, SpringBoot, PostgreSQL or other relational databases, Apache Kafka, Docker At least 5 years of experience with microservice architectures, synchronous REST communication over HTTP, and asynchronous communication over Apache Kafka Deep understanding of database transactions and locking mechanisms. Knowledge of algorithms and data structure for distributing loads like sharding, leadership election, and more. Preferred Qualifications: 2 years of experience with logging and metrics technologies: Prometheus, Grafana, Kibana 1 year of experience with the following infrastructure technologies: AWS, Github Actions, Kubernetes, Istio, Terraform, Terragrunt Spanish language skills. Experience with the Fintech domain or high paced startup. Our offer to you Competitive salary based on performance and experience Chance of earning Klar stock options 26 days of paid vacation per year Computer devices Wellhub subscription to offer mental and physical health Sponsored coaching and therapy sessions via Modern Health Training budget to upskill your learning Health insurance & Pension scheme BVG Corporate ticket Berlin office if you prefer to work onsite International work environment with amazing and highly skilled people A world class team that helps you evolve your skills in areas you're interested in Klar is a safe place for everyone! We trust our highly skilled and diverse team and we’re committed to creating a welcoming and inclusive environment for new talents to flourish. We value diversity and welcome all applications regardless of gender, nationality, ethnic and social origin, religion/belief, physical abilities, age, sexual orientation and identity. Should you require any accommodations through the recruitment process, please don’t hesitate to let us know how we can help!