Senior Systems Development Analyst

Description

Innovate to simplify. Every day, when we arrive at Finnet, we don’t just want to work—we want to build innovative solutions that streamline our customers’ management processes. More than that, we are client-centric! We relentlessly strive to understand your needs and behavior, crafting an outstanding user experience. We do this because we believe we can contribute to our customers’ success—and we want every company to use our systems. Creating something extraordinary is never easy. The best ideas emerge when people are having fun and working toward a greater purpose. You’ll be challenged, you’ll learn, and you’ll have fun! We serve as the ERP complement for numerous companies across Brazil, delivering solutions for: ACCOUNTS RECEIVABLE ACCOUNTS PAYABLE FINANCIAL MANAGEMENT PAYMENT GATEWAY ADVANCE MARKETPLACE Open Banking Want to learn more? Visit https://finnet.com.br/ We’re Growing! Join us as a \#Finneter **Responsibilities and Duties** * Develop backend services by translating product requirements into well-crafted technical solutions. * Participate in product architecture decisions by proposing options and trade-offs—not merely executing predefined specifications. * Assess impacts, risks, and estimate effort for proposed solutions based on technical investigation prior to commitment. * Design and implement integrations with third-party APIs using official technical documentation. * Model relational databases by translating business rules into structured designs (entities, relationships, workflows, and schema evolution) collaboratively with the team. * Write queries and implement data access with careful attention to performance and transactional consistency. * Document APIs for consumption by decoupled frontend and other integrators. * Write automated tests (unit and integration) as part of the development workflow. * Define quality criteria and acceptance scenarios jointly with the team, fostering a culture of distributed QA. * Ensure observability of delivered features and investigate production incidents. * Participate in code reviews with a collaborative mindset—giving and receiving clear, constructive feedback. * Interact clearly and assertively with Tech Leads, Product Owners, designers, and fellow analysts to refine user stories, question scope when cost/value doesn’t align, and propose simpler alternatives when available. * Monitor what you’ve deployed to production and close the loop between observed metrics and technical adjustments. **Requirements and Qualifications** **Education and Languages** * Bachelor’s degree in Computer Science, Software Engineering, Information Systems, Systems Analysis and Development, or related fields—or equivalent proven practical experience. * Technical English. **Technical Experience** * 5+ years of backend development experience, including at least 3 years with Node.js and TypeScript in production. * Solid hands-on experience with NestJS or an equivalent decorator/DI-based framework (e.g., Spring, .NET), with ability to rapidly adapt to NestJS. * Experience designing and operating REST APIs in production: versioning, authentication (JWT), pagination, error handling, and OpenAPI/Swagger documentation. * Relational data modeling: ability to translate business rules into a consistent model—defining entities, relationships, cardinalities, appropriate normalization, and schema evolution strategies without breaking production systems. * Advanced PostgreSQL SQL expertise: writing high-performance queries, analyzing execution plans, correctly applying indexes, managing transactions, and handling concurrency. * Experience integrating systems via third-party API documentation—including authentication (OAuth, JWT, API keys), retries, idempotency, and failure handling. * Production usage of Axios or an equivalent HTTP client. * Familiarity with Redis for caching and auxiliary state management. * Knowledge of messaging/queues for asynchronous processing (SQS, RabbitMQ, Kafka, BullMQ, or equivalents). * Proficiency with Git in collaborative workflows: branching, pull requests, code review, and conventional commits. **Practices and Tools** * Strong culture of automated testing integrated into development, using Jest and Supertest or equivalents. * Practical experience understanding and managing fundamental cloud resources in production. * Input validation and DTO handling using class-validator / class-transformer. * Familiarity with pragmatic application of DDD, Clean Architecture, or Hexagonal Architecture—knowing when to apply them and when their overhead isn’t justified. Our core product follows a ports/adapters pattern. * Use of Grafana or equivalents for production observability (structured logs, metrics, alerts). * Experience with CI/CD pipelines in Azure DevOps or equivalents. * Docker usage in local development and application packaging. * Discerning daily use of AI tools to accelerate delivery while maintaining code quality, security, and accountability. * Attention to API security: OWASP Top 10, secret management, input validation. **Profile and Mindset** * Autonomy to unblock tasks: investigate before asking, but communicate blockers early when support is needed. * Collaborative mindset: bring options to decisions instead of only executing or criticizing—and accept feedback without friction. * Proactivity: don’t wait for assignments; propose improvements, identify opportunities, and share insights with the team. * Comfortable in flat, cross-functional teams: treat PMs, designers, QAs, and developers as peers in decision-making—no implicit technical hierarchy. * Naturally share knowledge with the team (via pair programming, technical discussions, concise documentation) without needing formal processes. * Critical stance toward AI-generated code. * Genuine interest in the product and business domain: seek to understand the "why" before diving into the "how". * Ownership of deliverables: see problems through to resolution and take responsibility for production-supported components. * Clear written and verbal communication in Portuguese: document brief decisions, explain trade-offs, and give direct feedback. **Additional Information** **Nice-to-Haves** * Prior knowledge of receivables advance, book-entry duplicates, or the assignor risk market. * Experience with event-driven architectures and resilience patterns (retry, circuit breaker, outbox). * AWS certification (Developer Associate, Solutions Architect Associate, or higher). * Postgraduate studies or specialized courses in related areas (software architecture, distributed systems, data engineering, security). **Finnet: Connecting Companies to the Financial Future for Over 22 Years** At Finnet, our mission is to transform complexity into simplicity. With over two decades of experience, we are a benchmark in technological solutions that simplify financial management for large enterprises across Brazil. We pioneered digital transformation in the financial sector, delivering cloud-based software for financial connectivity, cash management, multi-channel payments, and corporate credit—and operating as a Techfin within the largest Assignee Risk Marketplace in the market. Our technology connects over 3 million CNPJs and 120 financial institutions. Today, we are certified as a Payment Transaction Institution and the only connectivity provider participating in Open Finance Brazil at the Central Bank. **Working at Finnet Means Being Part of Innovation** Here, each day is an opportunity to create something extraordinary. Our environment is collaborative, challenging, and focused on continuous learning. We believe the best ideas arise when we work with purpose and passion. If you’re seeking a place where you can grow, learn, and shape the future of corporate management, Finnet is your home. We operate in the following areas: **ACCOUNTS RECEIVABLE • ACCOUNTS PAYABLE • TREASURY** **Join Us as a \#Finneter** Become part of a solid, human-centered, and specialized company leading the market and shaping the future of financial management in Brazil. Here, you’ll have space to innovate, develop, and join a team connected to the future.