Java Developer Sr

Location: Mexico City (MX)

Experience Level: Senior

Description

At Sequoia Connect, we are a Talent-First Technology Ecosystem that redefines how elite professionals interact with the global digital landscape. We move beyond traditional models to act as a catalyst for the top 1% of global talent, connecting human potential with complex industrial execution. By joining our inner circle, you are not simply taking a position; you are aligning with a strategic partner dedicated to updating your "Human OS" and accelerating your growth through world-class, high-impact projects.

We are currently partnering with a global IT powerhouse that represents the connected world through innovative, customer-centric experiences. As a USD 6 billion organization and one of the top 7 IT service providers globally, our client empowers over 1,200 global customers—including several Fortune 500 companies—to "Rise™." With a massive network of 163,000+ professionals across 90 countries, they are at the absolute forefront of digital transformation, leveraging next-generation technologies such as 5G, AI, Blockchain, and Quantum Computing.

This is your chance to thrive in a workplace recognized as one of the most sustainable corporations in the world. You will join an environment that values innovation and societal impact, working on end-to-end digital transformation projects for global leaders. If you are a driven professional looking for global career opportunities and exposure to high-impact projects within an international network of expertise, this is where you belong.

We are currently searching for a Java Developer Sr:

Responsibilities

• Develop domain-focused Java microservices (Spring Boot) with clear endpoints, robust validations, and maintainable internal structures, strictly adhering to clean design principles and separation of concerns.
• Implement read models and projections using the CQRS pattern: design collections/documents in MongoDB, define indexes, and build hydration components that keep the read state consistent with business rules.
• Consume and publish events using Apache Kafka (Spring Kafka): implement robust, idempotent consumers, manage logical retries and errors, and ensure contract compatibility within the event-driven ecosystem (utilizing Schema Registry).
• Optimize query performance: analyze access patterns, tune MongoDB aggregations, pagination, and filters, and refine data models to minimize latency and load on consuming services.
• Collaborate extensively with BFF (Backend-for-Frontend), Frontend, and Data Plane teams to agree on API contracts, required fields, and semantics.
• Document APIs using OpenAPI/Swagger and ensure all changes are backward-compatible and progressive.
• Ensure code quality through rigorous testing using JUnit and Mockito.

Requirements

• Strong hands-on experience with Java: Deep proficiency in Java 17+, encompassing modern features and functional paradigms.
• Expertise in the Spring Ecosystem: Extensive experience with Spring Boot, Spring Web, and Spring Data MongoDB.
• Database & Architecture: Proven experience with MongoDB (data modeling, indexing, aggregations) and practical implementation of CQRS and read models.
• Event-Driven Messaging: Hands-on experience with Apache Kafka (Spring Kafka) for event consumption/publication and familiarity with Schema Registry.
• Testing & Documentation: Strong proficiency in unit and integration testing using JUnit and Mockito, and API documentation using OpenAPI/Swagger.
• Build Tools: Experience with Maven or Gradle.
• Banking Sector Experience: 3+ years of experience working within the banking or financial services industry, understanding its rigorous standards for security and transactional integrity.
• High-Performance Mindset: Resilience, emotional intelligence, and a focus on agile delivery.
• Technologist DNA: A deep understanding of the difference between "coding" and "engineering," specifically within distributed, event-driven architectures.

Desired 

• Familiarity with frontend frameworks (like Angular) to effectively collaborate on BFF implementations.
• Experience with cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes).
• Familiarity with cloud-native foundations or AI coding assistants.

Languages

• Advanced Oral English.
• Advanced Spanish.

Note:

Hybrid

If you meet these qualifications and are pursuing new challenges, start your application on our website to join an award-winning employer. Explore all our job openings | Sequoia Career’s Page: https://www.sequoia-connect.com/careers/

Requirements

• Strong hands-on experience with Java: Deep proficiency in Java 17+, encompassing modern features and functional paradigms.
• Expertise in the Spring Ecosystem: Extensive experience with Spring Boot, Spring Web, and Spring Data MongoDB.
• Database & Architecture: Proven experience with MongoDB (data modeling, indexing, aggregations) and practical implementation of CQRS and read models.
• Event-Driven Messaging: Hands-on experience with Apache Kafka (Spring Kafka) for event consumption/publication and familiarity with Schema Registry.
• Testing & Documentation: Strong proficiency in unit and integration testing using JUnit and Mockito, and API documentation using OpenAPI/Swagger.
• Build Tools: Experience with Maven or Gradle.
• Banking Sector Experience: 3+ years of experience working within the banking or financial services industry, understanding its rigorous standards for security and transactional integrity.
• High-Performance Mindset: Resilience, emotional intelligence, and a focus on agile delivery.
• Technologist DNA: A deep understanding of the difference between "coding" and "engineering," specifically within distributed, event-driven architectures.