As a Back End Engineer, you will work closely together with architects and engineers to advance the development of our modern, micro-services based platform, and deliver exciting new product features to our customers. You will contribute to the architectural and infrastructural design of our applications, and leverage your experience to optimize services for performance, scalability, and security. The role will challenge you to work in a highly agile environment, address strategic and implementational topics, and work on various parts of the application stack, including the core trading services and matching engine.

Responsibilities

• Build high-quality, scalable, and resilient applications and (web) services that support Leaf’s trading and analytics platform


• Contribute to the architectural and infrastructural design of the platform and its components


• Support planning of tasks using technical and functional expertise


• Support leadership in establishing, documenting, and enforcing technology standards, best practices and approaches to be leveraged by the engineering team


• Mentor and support other team members through code reviews and continuous feedback


• Take initiative to research, troubleshoot and resolve bugs and issues as they arise


• Be a flexible team player, stepping into a variety of roles, as needed

Qualifications

•  4+ years experience in development back ends with Java 8, incl. features like Streams, Serialization, Multi-Threading, Annotations


• Advanced knowledge of Spring/Spring Boot and ORM frameworks like Hibernate, JPA


• Strong experience in designing and developing modern, distributed, microservices-based applications with RESTful APIs, with particular attention to security, scalability, availability, and performance


• Profound understanding of object oriented programming and design patterns


• Strong experience in relational database design and development (preferably with PostgreSQL) and understanding of NoSQL databases and in-memory stores (e.g. Redis, DynamoDB, Hadoop)


• Experience working with event/message based communication platforms such as Kafka, ActiveMQ etc


• Working proficiency in build and development tools (e.g. Gradle, Jenkins, SonarQube)


• Experience with test frameworks (e.g. jUnit, Mockito)


• Preferred: Knowledge in cloud technologies/infrastructure (esp. AWS)


• Preferred: Prior experience in designing and developing financial systems (e.g. trading, risk, or compliance systems) and/or logistics systems


• Preferred: Experience with other languages, such as Python


• Preferred: Experience in front end development using modern JavaScript frameworks like React/Redux, Angular, Knockout, Ember, etc.


• Strong analytical, project leadership and communication skills


• Ability to work both self-directed and collaboratively to deliver results in a fast paced, startup environment


• Unbelievably positive attitude, sense of humor and/or thick skin


• Consummate team player, able to wear multiple hats, and assist team members when needed