Software Engineer - Java & Kotlin (Backend)

Vaco by Highspring; Montreal; On-site; CAD 80,000 - 120,000; Full time

Job summary

A dynamic technology company in Montreal is looking for a Backend Developer to join their team. You'll redesign and develop backend services, working with Java and Kotlin in a modern stack. The role requires significant experience in backend development and offers the chance to impact systems used by millions. A collaborative environment and room for growth are provided.

Qualifications

• 5+ years (Intermediate) or 8+ years (Senior) of backend development experience.
• Strong experience with Java and Kotlin.
• Background in relational databases (Oracle 19+, PL/SQL).
• Familiarity with NoSQL technologies like MongoDB and Elasticsearch.

Responsibilities

• Redesign and develop backend services powering user authentication.
• Work hands-on with Java and Kotlin in a real production environment.
• Contribute to both new feature development and ongoing system maintenance.
• Collaborate with senior engineers and technical leads on architecture and delivery.

Skills

Backend development experience

Java

Kotlin

Relational databases

NoSQL technologies

Job description

Overview

We're hiring a backend developer to join a dynamic and forward-thinking team focused on rebuilding and scaling a large-scale login and registration platform. If you're looking to work on meaningful systems that impact millions of users-and want to do it using a modern stack-you'll want to explore this role.

High-impact system rebuild. Modern tech stack. Talented team.

What You'll Work On

• Redesign and develop backend services powering user authentication


• Work hands-on with Java and Kotlin in a real production environment


• Contribute to both new feature development and ongoing system maintenance


• Collaborate with senior engineers and technical leads on architecture and delivery

What You Bring

• 5+ years (Intermediate) or 8+ years (Senior) of backend development experience


• Strong experience with Java and Kotlin


• Background in relational databases (Oracle 19+, PL/SQL)


• Familiarity with NoSQL technologies like MongoDB and Elasticsearch

Nice to Have

• Exposure to React and TypeScript


• Experience with Kafka and event-driven architecture


• Ability to work across both greenfield and legacy codebases

Why Apply

• Contribute to a high-visibility platform used by millions


• Work in a modern, fast-paced, and collaborative engineering environment


• Learn from a highly experienced team and influence technical direction


• Build clean, scalable systems with real-world impact

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology

Industries

• Information Services