Senior Java Microservices Developer – Java, Spring Boot, Kafka, MongoDB, OpenShift/AWS

Mississauga, ON, Canada

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Job details

Experience: Experience Range: 9 - 12 Years
Posting language: English
Posted: Aug 6, 2026

Original job description

Senior Java Microservices Developer – Java, Spring Boot, Kafka, MongoDB, AWS/OpenShift

Experience Range: 9 - 12 Years

Must Have Technical/Functional Skills

Core Development

Java (8/11/17) – strong hands-on experience.

Spring Boot, Spring MVC, Spring Data.

Microservices architecture:

Service decomposition

API contracts

REST APIs, JSON, OpenAPI / Swagger.

Kafka:

Producer

Consumer

Partitioning

MongoDB.

OpenShift / AWS.

Database & Data Layer

MongoDB:

Document modeling

Indexing strategies

Aggregation framework

CRUD and performance tuning

Integration & Messaging

Experience with Kafka (preferred).

REST-based integrations with upstream/downstream systems.

Roles & Responsibilities

Design, develop, and maintain Java-based microservices.

Implement RESTful APIs adhering to enterprise design standards.

Develop and optimize SQL queries (E2 level) for transactional and reporting use cases.

Design and manage MongoDB schemas, indexes, and queries.

Ensure high availability, scalability, and performance of microservices.

Apply exception handling, logging, monitoring, and resiliency patterns.

Collaborate with Business Analysts, Architects, QA, and DevOps teams.

Participate in code reviews, unit testing, and defect resolution.

Support CI/CD pipelines, deployments, and production issues.

Follow secure coding and compliance standards.

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More about this job

Responsibilities

The Senior Java Microservices Developer at Astra North Infoteck will build and maintain Java microservices and their REST APIs. The role also designs MongoDB schemas and queries, supports CI/CD deployments and resolves production issues.

Requirements

Candidates need 9 to 12 years of experience with Java (8, 11 or 17) and Spring Boot, plus microservices and REST API design. Hands-on work with MongoDB, Kafka and OpenShift or AWS is also required.

Skills

Java 8
Java 11
Java 17
Spring Boot
Spring MVC
Spring Data
Microservices architecture
Service decomposition
REST APIs
JSON
OpenAPI
Swagger
Apache Kafka
Kafka producers and consumers
Kafka partitioning
MongoDB
MongoDB document modeling
MongoDB indexing
MongoDB aggregation framework
MongoDB performance tuning
SQL
AWS
OpenShift
CI/CD
Exception handling

Keywords

Java
Spring Boot
Spring MVC
Spring Data
Microservices
REST API
OpenAPI
Swagger
Kafka
MongoDB
AWS
OpenShift
SQL
CI/CD
Backend developer
Senior software developer
Java developer
API development

Seniority

Senior

Tools

Java
Spring Boot
Kafka
MongoDB
OpenShift
AWS
OpenAPI
Swagger

Languages

English

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