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.

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.

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:
- Executor Service, 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.

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