Senior Java Engineer L2 - Core Java, Concurrency & JVM - Financial Services
Job ID: | calle 93b No. 13 Bogota Colombia | Others
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:
methods, status codes, idempotency
API versioning, error handling, and performance considerations
Hands-on experience implementing security best practices , including:
Authentication and authorization with Spr

📌 Technology and Engineering | Others Senior Java Engineer (Bogotá)
🏢 Publicis Sapient
📍 Bogotá