**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.

**Overview**

**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.

Required Skill Profession

Other General

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