Java Software Engineer - Strong in Python, Reactjs and Linux experience

Toronto, ON
Hybrid
Posted Oct 13, 2026
1 position

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Employment type: Contract
Experience level: Lead · 10+ years
Minimum education: Bachelor’s degree
Posting language: English
Working hours: 40 hours per week
Seniority: Executive
Application method: Direct apply is available

Job summary

Develop and support a large-scale, highly available distributed payment system as part of a DevSecOps team, contributing across the full software development lifecycle. Build and troubleshoot application components, address production issues, and support secure, high-performance services.

Job details

Job Title: Java Software Engineer - Strong in Python, Reactjs and Linux experience Location: Toronto, ON - Canada (Onsite/ Hybrid) Employment Type: Contract About Smart IT Frame: At Smart IT Frame, we connect top talent with leading organizations across the USA. With over a decade of staffing excellence, we specialize in IT, healthcare, and professional roles, empowering both clients and candidates to grow together. Job Summary: You will work in a dynamic DevSecOps team involved in full SDLC of application development to support a largescale highly available distributed payment system. Must: Java + React.JS + Python + Linux Basic Qualifications: Bachelors degree in Computer Science Software Engineering or equivalent working experience. 10 years of experience in software development with a focus on high performance distributed application development. Proficiency in Java CC Python JavaScript Nodejs Proficient with git GitHub copilot CICD pipeline Master secure coding principles and common patterns of vulnerabilities Deep understanding of Linux internals including processes threads memory management file systems networking signals IPC mechanisms and performance diagnostics Comfortable troubleshooting production issues using native Linux tools. Deep understanding of RESTful HTTP JSON to construct systems composed of distributed components Strong experience with SQL, NoSQL databases and ORMs Master cryptography basics TLSv13 knowledge of postquantum algorithms Experience in authentication authorization standards like OAuth 20 and JWT Experience in Web development with a relevant framework Spring, Spring Boot, Apache, Tomcat and a frontend framework React Angular Strong problem solving analytical thinking always ready to collaborate self driven detail oriented effective oral and written communication ability to keep documentation clear concise comprehensive and up to date. Nice to Have: Knowledge in containerization and common cloud platforms eg AWS GCP Comfortable working with OpenSSL and troubleshooting with tools like Wireshark Practical experience in diagrams as code type of tools eg Plant UML Mermaid etc Knowledgeable in PCIDSS PCISSF standards Mandatory Skills: Java Good to Have Skills: Docker, Microservices

What you’ll do

Requirements

Requires a bachelor's degree in Computer Science, Software Engineering, or equivalent experience, along with 10 years of software development experience focused on high-performance distributed applications. Candidates should be proficient in Java, Python, React.js, Linux, and related development and security technologies, with strong troubleshooting, communication, and collaboration skills.