Mid-Level Full Stack Engineer: SaaS, Java/React, Cloud

AgileEngine; Warszawa; Hybrid; PLN 238,000 - 476,000; Full time

Benefits offered by this job

Professional growth

Competitive compensation

Exciting projects

Flextime

Job summary

AgileEngine, LLC. is seeking a mid-level Full Stack Developer to build a secure, scalable client integration system for public safety agencies, including a from-scratch integration platform.

Requirements include 3+ years SaaS experience, strong Java, React, SQL skills, microservices, CI/CD, and observability, plus upper-intermediate English. The role offers flextime with remote and office options and opportunities to contribute to DevOps and documentation efforts.

Qualifications

• 3+ years of SaaS experience.
• Proficiency in Java, React, and SQL.
• Experience with microservices architecture.
• DevOps mindset of automation and continuous improvement.
• Strong observability and CI/CD practices.
• Upper-intermediate and higher English proficiency.

Responsibilities

• Build a reusable client integration system following secure cloud software best practices.
• Collaborate with design and product teams to understand requirements, create estimates, plan sprints, and meet delivery timelines.
• Plan and accurately estimate construction and delivery timelines.
• Contribute to technical documentation and automated build/deployment processes.
• Review code and participate in pull-request reviews.

Skills

SaaS experience

Java

React

SQL

Observability

CI/CD

English

Job description

AgileEngine, LLC. is seeking a mid-level Full Stack Developer to build a secure, scalable client integration system for public safety agencies, including a from-scratch integration platform.

Requirements include 3+ years SaaS experience, strong Java, React, SQL skills, microservices, CI/CD, and observability, plus upper-intermediate English. The role offers flextime with remote and office options and opportunities to contribute to DevOps and documentation efforts.