Senior Java Developer - Backend

CG Consulting Group; Toronto; On-site; CAD 90,000 - 120,000; Full time

Job summary

A leading consulting firm in Toronto is seeking a Senior Core Java Developer to join their team. The ideal candidate should have over 10 years of experience in server-side Java development with a strong focus on concurrency and multithreading. This hybrid role requires working in-office 3 days a week and offers a competitive salary and benefits. Prior banking or financial services experience is essential.

Qualifications

• 10+ years of hands-on coding in server-side Java.
• Strong Multithreading experience.
• 5+ years of coding experience in multi-cast messaging.

Responsibilities

• Develop core backend services for financial applications.
• Collaborate effectively in a team environment.

Skills

Java Concurrency

Multithreading

Server-side Java

Messaging and Event processing

Technical design

SQL Server

Dev Ops tools

Tools

Maven

Jenkins

Docker

Kubernetes

Job description

Overview

Senior Core Java Developer

This is with a large IT services firm for a major Canadian bank. Candidate must have legal work status for Canada. Client Location is downtown Toronto, close to GO and TTC. Hybrid - In-Office 3 days per week. Increase to 4 days in September 2025. Perm/FT role, salary and benefits or on contract - 6 months to start at Market rate.

Description

We’re seeking to build a team of talented senior level backend core Java developers.

Ideal Candidate

• Hardworking, dedicated, detail oriented, focused on quality and a team player, with effective verbal and written communications.
• 10+ years of hands-on coding in server-side Java with strong emphasis on Java Concurrency, RX Streams, Caching (GridGain as Cache), Collections API, Messaging and Event processing across multiple streams.
• Strong Multithreading experience.
• 5+ years of coding experience in multi-cast messaging (Solace / RV).
• 5+ years of coding with relational DB (SQL Server / Sybase / Oracle).
• 5+ years of technical design of low latency trading application services.
• 5+ years of Dev Ops tools (Maven, Jenkins, Nexus, Helios).

Must have

• 10+ years of hands-on coding in server-side Java with strong emphasis on Java Concurrency, Caching (GridGain as Cache), API, Messaging and Event processing across multiple streams.
• Strong Multithreading experience.
• Banking / Financial Services experience.

Nice-to-have

• 2+ years of hands-on experience with cloud technologies like Docker, Kubernetes or similar.
• Capable of managing & leading people and delivery.