Backend Developer Sr
About the position 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.
Responsibilities
- Design and implement efficient and scalable backend solutions using Java (JDK 11+) and the Spring Boot ecosystem.
- Define clean architectures (Microservices, Event-driven, Hexagonal) while ensuring high-quality standards (Sonar, SOLID, Clean Code).
- Optimize performance and resolve bottlenecks in existing systems.
- Integrate applications with databases, external services, and APIs (RESTful and GraphQL).
- Provide technical leadership by mentoring junior/mid-level developers through code reviews and pair programming.
- Collaborate with cross-functional teams (Frontend, DevOps, QA) to deliver integrated solutions.
- Ensure quality and security by implementing unit/integration tests (JUnit, Mockito) and applying standards like OWASP, JWT, and OAuth2.
- Manage Cloud Infrastructure and DevOps tasks using AWS/Azure/GCP, Docker, Kubernetes, and CI/CD pipelines (Jenkins, GitHub Actions).
- Document technical designs, decisions, and processes to maintain accessible organizational knowledge.
Requirements
- 5+ years of professional experience in backend development with Java.
- Advanced mastery of Java (JDK 11+), including lambdas, streams, and concurrency.
- Expertise in Frameworks: Spring Boot, Spring Security, and Hibernate/JPA.
- Strong Database knowledge: SQL (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis, Cassandra).
- Experience with Messaging/Events: Kafka, RabbitMQ, or AWS SQS.
- Proficiency in Infrastructure: Working with Cloud environments (AWS, Azure, or GCP).
- Degree in Software Engineering, Computer Science, or equivalent experience.
Nice-to-haves
- Certifications: Java (Oracle Certified Professional) or Cloud (AWS/Azure).
- Experience with Serverless Architecture (AWS Lambda).
- Security Tooling: Knowledge of Checkmarks, Fortify, or BlackDuck.
- Advanced Oral English.
- Advanced Spanish.
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