Java Exchange Developer (Mid/Senior) B2F Lisbon October 26, 2025 Lisboa

B2F focuses its activity on the design and development of business intelligence information management solutions for medium and large companies across a wide range of markets. It is composed of a group of professionals with experience in business intelligence, project management, information systems consulting, and strategic consulting.

Do you have a passion for building
- performance,
- critical systems? We're looking for an experienced Java Developer to join our Exchange Team and help us build our core
- assets exchange platform.

Role and Responsibilities

• Develop and maintain efficient Java-based
  - assets exchange environment, ensuring
  - quality code and adherence to coding standards
• Write robust, maintainable,
  - tested and
  - documented code to meet project goals and deadlines
• Troubleshoot and resolve software defects and technical issues to minimize disruption in
  - generating processes
• Collaborate with
  - functional teams to define and implement new features
• Participate in code reviews and incorporate feedback
• Maintain and enforce good quality internal documentation

Skills Required

• 6+ years of software development in Java
• Deep understanding of
  - oriented programming concepts, and advanced design patterns for performance, scalability and safety of delivered solutions
• Fully comfortable in working with Git and Linux
• Clean and efficient coding style
• Comfortable writing automated tests for own code and extending coverage for existing code
• Experience taking ownership of projects and features end to end, from inception to delivery
• Experience of providing production support to business critical services
• Ability to work with people at all levels of the organization
• Strong communication skills in English - B2/C1 level
• Thorough understanding of web technologies and protocols (e. g. HTTP, REST, TCP, UDP, Websocket)
• Knowledge of relational databases and Postgre
  SQL
• Experience with Kafka, Redis or g
  RPC
• Experience with Docker, Kubernetes and/or AWS
• Comfortable coding in Python
• Interest in crypto and/or trading

Benefits and Culture

• To grow at a fast pace as we push you to constantly give the best of yourself.
• Work with the latest technologies and products to maximize productivity.
• Great career development opportunities in a growing company.
• Being part of the future of finance technology and having a meaningful impact on B2C2’s future, making it an exciting and rewarding company to be part of.
• A dynamic workplace with a great balance of hard work and fun.
• Ability to make a difference.
• Forward thinking and dynamic culture.
• Ambitious – Striving to make history through world class achievements
• Innovative – Forward looking in our solutions for clients and employees
• Meritocratic – Rewarding positive contribution across the organisation
• Collegiate – Achieving through teamwork through a healthy environment
• Risk Aware – Informed decision making and considered in our practices

B2C2 is committed to a policy of equal employment opportunity for applicants and employees and we welcome applicants from all backgrounds. It is the policy of B2C2 to apply recruiting, hiring, training, promotion, compensation and professional development practices without regard to actual or perceived race, colour, religion, sex (including pregnancy, sexual orientation and gender identity), national origin, age, disability or certain classifications based on genetic information, or because someone is married or in a civil partnership or any other characteristic protected by federal, state or local laws, regulations or ordinances. As such, B2C2 will not tolerate discrimination against any of our employees on the basis of membership in a protected category. We are also committed to creating an inclusive environment to ensure we attract, engage, promote and retain the best talent. We will consider flexible working arrangements for any of our roles.