Senior Java Developer with Telecom / OSS Experience

COGNITO INC; Brampton; Hybrid; CAD 90,000 - 130,000; Full time

Job summary

A technology company in Brampton is seeking a Senior Java Backend Developer / Lead with substantial experience in Java and telecom. The role requires strong skills in OOP, Spring Boot, and web services development. Candidates must have 10+ years of experience and will work onsite three days a week, with an in-person interview required. This position involves project work covering microservices architecture and backend optimization.

Qualifications

• 10+ years of overall experience required.
• Telecom domain experience is mandatory.
• Strong hands-on experience in Java and backend technologies.

Responsibilities

• Develop and maintain Java applications in a telecom environment.
• Implement REST and SOAP web services according to specifications.
• Collaborate on microservices architecture and solution design.

Skills

Java 8 / 21

OOP

SOLID Principles

Spring Boot

Spring Data JPA

REST web services

SOAP web services

Microservices architecture

OAuth 2.0

Kafka

Docker

Kubernetes

Redis

Multithreading

Asynchronous programming

Job description

Overview

We have openings for Java Engineers with Telecommunication domain / OSS experience.

Title: Senior Java Backend Developer / Lead

Location: Brampton, ON (Need to visit 3 days a week onsite)

Need 10+ years of overall experience

This role requires in person client interview at Brampton office.

Telecom domain experience is mandatory

Job Description

• Strong hands-on experience in Java 8 / 21, OOP, SOLID Principles, and writing clean, maintainable code.
• Expertise in Spring Boot, Spring Data JPA, and transaction management.
• Solid experience with REST and SOAP web services development.
• Practical understanding of microservices architecture, OAuth 2.0, and security best practices.
• Proficient in Kafka messaging systems integration.
• Hands-on experience with Docker and Kubernetes deployments.
• Strong background in caching mechanisms (Redis) and backend performance optimization.
• Deep understanding of multithreading, concurrency, and asynchronous programming patterns.
• Good knowledge of backend testing frameworks and practices.