Senior Fullstack Engineer (Angular + Java/Go/.NET | Financial Backoffice)

Description

Job Summary: We are looking for Senior Fullstack Developers with strong technical maturity to work on a high-volume financial backoffice investment platform, featuring complex business rules and real engineering challenges—evolving both architecture and critical systems. Key Highlights: 1. Work on critical systems and architecture evolution 2. Environment with concrete technical challenges and high impact 3. Space for technical influence and leadership **About the Opportunity** We have **Senior-level positions** to work on a financial investment backoffice platform. The environment involves **high data volume, complex business rules, and real engineering challenges**. This is not a simple CRUD-focused role—we seek candidates with technical maturity to work on **critical systems and evolve architecture**. **Responsibilities and Duties** **Technical Context** * Highly operationally complex backoffice platform * Strong integration between frontend and backend services * Environment demanding **code quality, performance, and scalability** * Active participation in technical decisions **Tech Stack & Technologies** We expect genuine depth in at least one backend stack: * **Frontend:** Angular (primary), TypeScript, RxJS * **Backend (Senior level):** * Java/Kotlin (Spring Boot, Micronaut, Quarkus) * Go (Fiber, Echo, Go\-kit) * .NET Core (C\#) * Node/TypeScript (less common, but possible) **Responsibilities** * Develop and evolve critical backoffice applications * Build complex, high-performance interfaces in Angular * Design and implement scalable APIs and services * Contribute to architectural decisions and best practices * Solve highly complex technical problems **Requirements and Qualifications** **Requirements (Genuine Seniority)** * Solid experience with **Angular in complex production environments** * Consistent **Fullstack experience with robust backend development (not just API consumption)** * Hands-on experience with **service-oriented architecture / microservices** * Experience with systems featuring dense business logic * Ability to operate with technical autonomy **Nice-to-Haves** * Experience in fintechs, banking, or investment domains * Experience with high-scale / low-latency systems * Knowledge of messaging and event-driven architecture * Participation in significant architectural decisions **Additional Information** **Why This Role Is Different** * Backend carries real weight—not secondary * Environment with concrete technical challenges * Space for technical influence and architecture evolution **Why Sciensa?** * Environment balancing **autonomy and governance**. * Real and meaningful technical challenges. * Space to influence architecture and technical decisions. * Close collaboration with business stakeholders, delivering direct impact. **Important:** Hiring Model: PJ (Hourly Rate). Working Hours: 8 hours per day Work Model: 100% Remote Paid Leave: 15 days after 12 months of contract (to recharge!) Equipment: Provided by Sciensa, as required by team/project. **Sciensa** is a leading Brazilian InfraTech specializing in digital infrastructure for the financial sector. We deliver solutions across APIs & integrations, Cloud, Data & AI, Cybersecurity, and custom-built platforms. For over 15 years, we’ve delivered innovation, robustness, and efficiency to clients requiring secure, scalable, and high-performance operations. #### **Our Purpose & Culture** **Why We Exist:** To ensure financial institutions can grow with reliable, secure, and innovative technology. **How We Do It:** Through collaborative teams, autonomy, continuous learning, and focus on tangible results. **Values Guiding Our Daily Work:** Innovation, Technical Excellence, Security, Leadership, Transparency. #### **Our Values and Differentiators** **Technical excellence and security** across every layer of the digital ecosystem. **Continuous innovation:** We consistently adopt best practices, emerging technologies, and proactively address market needs. **Impact focus:** For us, delivering a system isn’t enough—we aim for value generation, efficiency, scalability, and trust. **Collaboration and leadership:** We value autonomous teams where each professional meaningfully contributes to decisions, company growth, and client success. #### **What It Means to Work Here** **High-impact projects:** You’ll work on solutions affecting millions of users, critical systems, data governance, and security. **Recognition and autonomy:** You lead initiatives, participate in technical decisions, and see your contributions deliver value to clients and the company. **Diverse and collaborative team:** People from varied backgrounds, knowledge sharing, team spirit, and appreciation for those who share, innovate, and grow.