Job Summary: We are seeking a Senior Backend Developer to work within a constantly evolving technology ecosystem, influencing architectural decisions and advancing technical standards. Key Highlights: 1. Working in a challenging, modern, and high-impact environment 2. Influencing architectural decisions 3. Autonomy to propose solutions and evolve technical standards **We are looking for someone who dares to co-lead with us.** We seek a **Senior Backend Developer** eager to work in a challenging, modern, and high-impact environment, actively contributing to the development and evolution of solutions supporting critical business operations. This opportunity enables you to work within a **constantly evolving technology ecosystem**, spanning multiple business domains, featuring high technical complexity, and offering real opportunities to influence architectural decisions. The professional will have autonomy to propose solutions, evolve technical standards, and directly contribute to system maturity and scalability. **Requirements and Qualifications:** * Solid experience in Backend development; * Experience with **Java and JavaScript**; * Experience in highly complex projects; * Experience with Git version control; * Experience in projects involving **AWS and APIs**; * Experience writing unit tests; * Ability to write well-designed, testable, efficient, and maintainable code; * Strong understanding of Lean Startup and product-oriented mindset; * Knowledge of Jira Software and Confluence; * Ability to work autonomously, making strategic technical decisions in dynamic environments; * Commitment to delivering high-quality results, even under challenging deadlines. **Desirable:** * Experience with high-performance software and highly available distributed systems; * Knowledge and application of multiple development paradigms and methodologies; * Experience in financial markets and/or cryptocurrency; * Familiarity with Linux; * Prior experience in projects adopting an **API-First approach**; * **Availability for a Hybrid model (2 days per week onsite at Rua Pasteur), subject to adjustments based on project needs.** **Additional Information:** * For your health, we offer **medical and dental assistance** with no copayment for exams or consultations. * Want more wellbeing? We offer **Gympass** and **Zenklub** (with two free sessions per month) to support your physical and mental health. * When hunger strikes, use our meal benefit **Caju** to shop at any supermarket or restaurant. * Love traveling? Here, we have **Férias & Co**, a benefit helping you realize your dream vacation. * Have children? Count on our **childcare allowance**. * Growing family? We offer **MomCare**, a flexible monetary incentive post-maternity leave for new Datunian mothers. * To personalize your workspace, rely on our **home office allowance**. * Want to invest in your professional development? We partner with several renowned educational institutions to offer you discounts of up to 70% on **undergraduate**, **postgraduate**, **MBA**, **language**, and many other courses! **To explore all our benefits, visit the homepage of our careers page.**