Desenvolvedor Back- End Sênior

Hoje

This is a fully remote position and is a CLT (model) with salary range 17-23k real/mo DOE.

Must-haves:

• 4+ years of professional experience as a Backend Developer
• Strong experience with NodeJS , specifically NestJS , including implementing backend functions to support front-end features
• Experience with PostgreSQL (or any relational database): writing SQL queries, making database changes, and querying data
• Solid understanding of unit and integration testing using Jest

Plusses:

• AWS and Terraform
• GitHub Actions

Day-to-Day:

In this role, you'll collaborate closely with front-end developers to support feature development, focusing on backend implementation. You'll be responsible for building backend functions that feed into the UI, managing database queries and updates, and writing tests to ensure stability and reliability. While a dedicated DevOps team handles deployments, you'll work alongside them to ensure your code is properly deployed using GitHub Actions. Your contributions will be key to delivering a seamless experience across the platform.

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Start Date: ASAP

Location: Anywhere in LATAM

Contract Length: 6 months initially

Contract Type: Freelance / B2B / Contract

Senior Backend Developer (NestJS / Digital Banking Platform)

Position Overview

We are seeking a Senior Backend Developer with 10+ years of experience and deep expertise in NestJS, API architecture, and multi-tenant systems to join our team. You will lead backend development for a next-generation digital banking platform , enabling account creation, secure transfers, real-time dashboards, and deposit tracking.

This is a hands-on leadership role for an engineer who thrives in fast-paced environments, challenges assumptions, and mentors a young and ambitious engineering team while driving backend excellence.

Key Responsibilities

• Design, build, and optimize scalable multi-tenant APIs for a digital banking system.
• Implement secure account creation, transfers, and real-time banking dashboards.
• Lead API architecture discussions, testing (unit, integration, e2e), and deployments.
• Mentor and coach a growing engineering team, instilling best practices in backend systems.
• Facilitate code reviews, technical discussions, and knowledge-sharing sessions.
• Challenge existing approaches and propose better architectural and technical solutions.

Event Streaming & Observability

• Drive the adoption of event streaming (Kafka) for real-time transaction processing.
• Implement strong monitoring, logging, and observability with tools such as Datadog or Grafana.
• Work closely with frontend engineers (React/Next.js, React Native) to deliver seamless banking experiences.
• Contribute to onboarding processes by setting up tools, frameworks, and engineering standards.
• Collaborate cross-functionally with stakeholders to ensure reliable and timely delivery.

Requirements

• 10+ years of experience in backend development.
• Deep expertise with NestJS (architecture, testing, and production deployment).
• Strong background in multi-tenant API systems and scalable backend architectures.
• Experience in financial services or digital banking is highly desirable.
• Hands-on experience with Kafka or similar event streaming platforms.
• Knowledge of observability tools such as Datadog, Grafana .
• Strong leadership, mentoring, and coaching skills.
• Excellent communication skills in both English and Spanish .