Mid-Senior Java Software Engineer

OKTO PAYMENTS

Java Middleware Engineer developing scalable payment technologies for fintech company OKTO. Join a remote team in Argentina to create impactful solutions.

Posted 7/23/2026full-timeRemote • 🇦🇷 ArgentinaSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Java 11+ middleware application development, including microservices with Spring Boot and Spring Cloud, while applying Agile methodologies. Strong communication skills in English and Spanish, along with a solid foundation in technical writing for product specifications and design documents.

Highest-signal resume keywords

Java 11+ Middleware Application DevelopmentMicroservices with Spring Boot and Spring CloudAgile MethodologiesTechnical Writing for Product SpecificationsFluent in English and Spanish

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Applicant Tracking System Keywords

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Hard Skills

Java Programming LanguageObject-Oriented Design (OOD)Functional ProgrammingEvent-Driven Software Design PatternsRestful API DesignOAuth2 SecurityJPA Persistence and ORM ModellingPerformance Optimized CodeUnit TestingVersion Control with Git

Soft Skills

Analytical ThinkingPractical ThinkingTeam PlayerStrong Written CommunicationStrong Verbal Communication

Certifications & Qualifications

Bachelor's Degree in Computer EngineeringMaster's Degree in Computer Engineering

Industry Keywords

FintechPayments

Tech Stack

Tools & technologies

CloudJavaMicroservicesSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Ability to develop new product functionality based on business and technical requirements
Produce performance optimized code that is properly unit tested
Support SIT, UAT and production environments
Apply modern Agile methodologies

Requirements

What you’ll need

Excellent academic background. Bachelor or Master’s degree in a Computer Engineering field or related area
Proven Working Experience in fintech/ payments
Proven experience 5+ years in middleware application development using Java programming language (at least 1 year using Java 11).
Java 11+ Functional Programming as well as Object-Oriented design (OOD)
Some familiarity with Event-Driven software design patterns
Strong written and verbal communication in English and Spanish
Good technical writing for product requirements, design documents and product specifications
Working with versioning and source control systems (e.g. Git)
Analytical and practical thinking
Team player
- Specific experience:
Java 11+ microservices with Spring Boot and Spring Cloud (Netflix OSS)
Spring 5 Framework, OAuth2 Security, JPA persistence and ORM modelling, Restful API design
Proficient understanding of Git code versioning tool

Benefits

Comp & perks

💰 Competitive Compensation
📈 Career Growth
🎓 Continuous Learning
🌱 Inclusive Environment
🏠 Work-from-home
🎂 Birthday leave **