Job Summary: We are seeking a professional focused on performance, scalability, and security to build robust and innovative financial solutions that directly impact end users. Key Highlights: 1. Informal environment focused on results, autonomy, and responsibility 2. Direct contact with technical leadership and founders 3. Relevant projects in the financial and crypto markets with significant growth potential We seek a professional who serves as a reference in solving complex problems and building robust, innovative financial solutions. We value individuals focused on performance, scalability, and security, who demonstrate initiative and autonomy in making strategic technical decisions and directly impacting end users’ daily experience. **What It’s Like to Work With Us:** * Informal environment focused on results, autonomy, and responsibility; * Direct contact with technical leadership and founders; * Relevant projects in the financial and crypto markets, with high scalability potential; * Collaborative team passionate about innovation; * Competitive compensation; * Annual bonus based on individual and collective performance. **Requirements** We expect you to have: * Minimum 4 years of experience in **JavaScript/Node.js** * Practical experience with **REST APIs** * Proficiency in **MySQL**, and familiarity with **ORMs** such as **TypeORM**, **Prisma**, **Sequelize**, or **Bookshelf** * Experience with queues and messaging systems (e.g., **BullMQ**, **RabbitMQ**) * Knowledge of **Redis** **Nice-to-Have Qualifications (Not Required but Highly Valued)** * Knowledge of TypeScript or advanced use of JSDoc * Experience with OpenAPI (apiDoc is also a plus) * Knowledge of ElasticSearch, MongoDB, and PostgreSQL * Experience with Docker and Kubernetes * Familiarity with React and/or React Native * Knowledge of PHP and Python (for legacy systems) * Proficiency in HTML/CSS * Experience with GraphQL * Interest in or experience with blockchain, cryptocurrencies, and web3 * Background in financial systems, banking, or payment gateways * Technical or intermediate English for reading and writing **About Wisiex** Wisiex is a software house specializing in developing robust and innovative financial solutions—from traditional and crypto investment platforms to payment gateways, branded cards, and international payment systems—collaborating on the development of **Azify**’s solutions. We seek curious, proactive individuals who enjoy solving complex problems and building products that directly impact end users’ daily lives. We value curious and proactive individuals who embrace complex challenges and take pride in creating standout products. **Selection Process:** 1st Stage – Behavioral and reasoning assessments; 2nd Stage – Interview with the People Team (cultural fit and experience validation); 3rd Stage – Technical case study and presentation to the department manager (our CTO and Tech Lead participate in this stage); 4th Stage – Completion of the selection process and submission of the job offer or feedback. If you enjoy learning, collaborating, and transforming ideas into real-world solutions, this may be the right place for you.