Senior Full-Stack Software Engineer

Particle41; Argentina; On-site; ARS 83,717,036 - 111,622,715; Full time

Job summary

Particle41 is seeking a Senior Full-Stack Engineer based in Argentina. The role requires 5-8+ years of experience in software development, with proficiency in Java and the Spring Boot ecosystem, and skills in Angular and PostgreSQL. You will own the application lifecycle, from backend APIs to production infrastructure on AWS, and will work directly with the founder, ensuring high code quality and system reliability. Experience with Docker and CI/CD pipelines is a plus.

Qualifications

• 5–8+ years of professional software development experience required.
• Strong proficiency in Java and Spring Boot ecosystem needed.
• Solid front-end skills with Angular and TypeScript essential.

Responsibilities

• Own the full application lifecycle from backend APIs to frontend UI.
• Design, develop, and ship new features for the platform.
• Manage PostgreSQL database including schema and query optimization.

Skills

Java

Spring Boot

Angular

PostgreSQL

AWS

TypeScript

RxJS

Tools

Docker

JHipster

Liquibase

GitHub

Jenkins

Job description

The Opportunity

We’re looking for a Senior Full-Stack Engineer who can take ownership of the codebase and infrastructure. This isn’t just a “build what you’re told” role—you’ll be the primary technical driver of the platform, making architecture decisions, shipping features end‑to‑end, and ensuring our systems run reliably in production. You’ll work directly with the founder and have real autonomy to shape the product’s technical direction.

Tech Stack

• Backend: Java 8, Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Gradle
• Frontend: Angular 7, TypeScript, Angular Material, RxJS, Webpack
• Database: PostgreSQL with JPA/Hibernate, Liquibase migrations
• Infrastructure: AWS (EC2, RDS, S3, CloudFront), Docker
• Framework: JHipster (project scaffolding and conventions)
• Monitoring: Bugsnag (error tracking)

What You’ll Do

• Own the full application lifecycle—backend APIs, frontend UI, database schema, CI/CD pipelines, and production infrastructure on AWS
• Design, develop, and ship new features across the Java/Spring Boot backend and Angular frontend
• Manage and optimize our PostgreSQL database, including schema migrations (Liquibase), query performance tuning, and data integrity
• Maintain and improve AWS infrastructure: EC2, RDS, S3, CloudFront, and related services
• Collaborate directly with the founder to translate business requirements into technical solutions
• Improve code quality through testing, code reviews, refactoring, and documentationTroubleshoot and resolve production issues quickly and thoroughly
• Evaluate and adopt modern tools, frameworks, and practices to keep the platform competitive
• Leverage AI‑powered development tools (e.g., Claude, GitHub Copilot) to accelerate delivery and improve code quality

What We’re Looking For

Required

• 5–8+ years of professional software development experience
• Strong proficiency in Java and the Spring Boot ecosystem (Spring MVC, Spring Data JPA, Spring Security)
• Solid front‑end skills with Angular (TypeScript, RxJS, component architecture)
• Deep experience with PostgreSQL or similar relational databases—schema design, migrations, query optimization
• Hands‑on experience with AWS services (EC2, RDS, S3, CloudFront, IAM) or comparable cloud platforms
• Comfortable working across the entire stack and owning infrastructure alongside application code
• Strong English communication skills (written and verbal) for daily collaboration
• Self‑directed and proactive—you take initiative, flag issues early, and don’t wait to be told what to do
• Available during US business hours (Central Time preferred, but flexible within the Americas)

Nice to Have

• Experience with JHipster‑generated applications
• Familiarity with Liquibase for database change management
• Experience with Docker, CI/CD pipelines (GitHub Actions, Jenkins, or similar)
• Background in marketplace platforms, subscription billing, or scheduling systems
• Exposure to mapping/GIS tools (Google Maps API, geospatial queries)
• Interest in or experience with AI‑assisted development workflows