Your Impact - Join a large-scale financial services platform, supporting business-critical systems with high standards of reliability, security, and performance.

- Play a key role in the ongoing modernization of enterprise Java applications, including:
- Migrating legacy Java services to modern Java versions (Java 17 / Java 21) - Refactoring existing codebases to improve scalability, performance, and maintainability - Contributing to architectural evolution toward modern, cloud-native patterns - Design and enhance high-performance backend systems, supporting both new features and platform evolution.
- Collaborate directly with senior client stakeholders in a highly autonomous, client-facing environment.
- Contribute to platform stability by participating in production-related activities, while keeping development and modernization as the primary focus.

Qualifications Your Skills and Experience - Strong hands-on experience with Java in enterprise-scale systems, ideally within regulated or high-availability environments.

- Proven experience working with modern Java versions, including Java 17 and Java 21.
- Solid understanding of Core Java fundamentals, including:
- Java Collections Framework (List, Set, Map, concurrency-aware collections) - Object-oriented principles and enterprise design patterns - Strong background in concurrency and multithreading, including:
- ExecutorService, thread pools, synchronization strategies - Designing thread-safe, high-performance systems - Experience optimizing backend performance across:
- REST APIs - SQL queries and data access layers - Microservices interactions and data processing flows - Strong understanding of REST API concepts, including:
- HTTP methods, status codes, idempotency - API versioning, error handling, and performance considerations - Hands-on experience implementing security best practices, including:




- Authentication and authorization with Spring Security - OAuth and JWT - Proven experience in JVM analysis and tuning, including:
- Memory management and garbage collection - Thread dumps vs. heap dumps: when to use each and how to analyze them - Performance troubleshooting using tools such as JConsole, JVisualVM, or similar - Understanding and practical use of JMX - Strong debugging skills, including:
- Local debugging and remote debugging of Java applications - Structured debugging methodologies for production and non-production environments - Familiarity with basic Unix/Linux commands for troubleshooting and system inspection.
- Solid understanding of build and dependency management, including:
- Maven concepts (lifecycle, dependencies, plugins, profiles) - Familiarity with NoSQL databases, with MongoDB preferred.
- Understanding of event-driven architectures, including Kafka or similar messaging platforms.
- Experience working in AWS-based environments (strong plus), with exposure to multi-cloud or hybrid cloud environments as a bonus.
- Strong communication skills, able to explain technical decisions and findings clearly in discussions with senior stakeholders.

Set Yourself Apart

With - Experience modernizing enterprise Java platforms in financial or regulated industries.

- Demonstrated JVM tuning and performance optimization work.
- Background designing high-throughput, secure, event-driven backend systems.
- Exposure to cloud-native, multi-cloud, or hybrid architectures.
- Comfort leveraging AI tools to improve engineering productivity.
- Experience working directly with senior stakeholders in client-facing roles.

Company Description We’re looking for a Senior Java Engineer to join a large-scale financial services platform in the middle of an active Java modernization journey. In this role, you’ll help migrate and evolve legacy systems toward modern Java (17/21) and cloud-native architectures on AWS, working on performance-critical, secure, and highly scalable services that run in production at scale.

📌 Senior Java EngineerCore Java, Concurrency & JVM - Financial Services (Bogotá)
🏢 Publicis Sapient
📍 Bogotá