Senior Java Engineer L2 - Core Java, Concurrency & JVM - Financial Services
Job ID: 2026-150135 | calle 93b No. 13 Bogota 110221 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:
HTTP methods, status codes, idempotency
API versioning, error handling, and performance considerations
Hands-on experience implementing security best practices, including:
Authentication and authorizat

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