Job Summary: The Celcoin is seeking a professional to build large-scale financial technology infrastructure, focusing on developing scalable solutions and ensuring the quality of system deliveries. Key Highlights: 1. Building large-scale financial technology infrastructure 2. Analyzing systems and proposing scalable architecture solutions 3. An inspiring and collaborative work environment Founded in 2016, **Celcoin** is a financial infratech company empowering businesses. As a pioneer provider of comprehensive financial technology infrastructure for companies across diverse industries, **Celcoin** delivers solutions for banking, credit, cash management, Open Finance, retail, and onboarding. Approximately 400 fintechs and digital banks, over 6,000 medium and large enterprises, and 40,000 retail points are connected to the **Celcoin** platform, processing R$15 billion monthly. **This is Celcoin: the best service for growth.** To achieve this success daily, we have built an inspiring and collaborative work environment—and now we’re looking for new **Celcoiners** to join this journey! Do you identify with our purpose? We have an opportunity to join our talent team, leveraging technology to bring financial services to the entire population. **Responsibilities and Duties:** * Building large-scale and distributed financial technology infrastructure: software, testing, documentation, and process development; * Analyzing systems and proposing scalable architecture solutions for real-world problems; * Developing and maintaining Web APIs; * Developing event-driven microservices; * Collaborating with the product team to deliver systems; * Managing technical debt and working with the product team to address it; * Developing database routines and reports using MySQL, SQL Server, and MongoDB; * Ensuring quality in system deliveries; * Maximizing speed of deployed systems and routines; * Software engineering metrics. **Requirements and Qualifications:** * Degree in Computer Science, Engineering, or Information Systems; C#, .NET Core; * Databases (MySQL, SQL Server, and MongoDB preferred); * Knowledge of microservice architecture (distributed systems); * Collaboration in building microservices within a CI/CD environment; * Knowledge of messaging-based communication (Kafka, ServiceBus, RabbitMQ, or similar); * Consumption and creation of Web APIs; * Knowledge of Clean Architecture or DDD; * Basic computer skills: Excel and PowerPoint; * Advanced English preferred; * Experience in financial systems or mission-critical systems—or prior work at a financial institution or fintech preferred. **Additional Information** **CLT Employment Contract** **Work Schedule**: Monday to Friday, from 09:00 to 18:00 This is a **Remote** position. **Celcoin’s Care for You:** * **Meal/Voucher Allowance (VR/VA)** paid via iFood Benefits; * **Transportation Allowance (Vale-Transporte)**; * **Bradesco Medical and Dental Assistance**, fully covered for employees (no co-payment), with optional dependent coverage (dependents subject to co-payment); * **Life Insurance**; * **TotalPass**; * **Zenklub**; * **Annual Variable Compensation** (tied to company goals); * **Childcare Allowance**, covering children up to age 5; * **Birthday Day Off**; * **Partnerships with language schools and universities**; * **Pharmacy Discount Program**; * **PetLove** (discounts on pet health plans for dogs and cats); * **SESC Partnership**; * **We Are a Citizen Company**, offering extended maternity leave (180 days) and paternity leave (20 days).