Senior Developer / Dev Lead – AWS Cloud & Distributed Systems

Role: Senior Developer / Dev Lead AWS Cloud & Distributed Systems

Location: Mississauga, ON / Hybrid

Contract: 6+ months contractRole Overview

We are looking for a highly capable Senior Developer / Dev Lead to join the ESD project team. The ideal candidate will be a hands‑on technical leader with strong AWS cloud-native development experience, distributed systems expertise, and the ability to quickly gain deep knowledge of existing enterprise systems.

Key Responsibilities

Lead and contribute to the design, development, and support of cloud-native enterprise applications.

Quickly understand existing architecture, integrations, workflows, and business processes within the ESD platform.

Work closely with architects, business analysts, QA, and operations teams to deliver scalable and reliable solutions.

Support and enhance systems built on AWS cloud technologies and distributed event‑driven architectures.

Troubleshoot complex production and integration issues across multiple systems.

Drive technical excellence, coding standards, best practices, and system stability.

Mentor intermediate and junior developers and encourage collaborative development practices.

Promote proper documentation, knowledge sharing, and reduction of dependency on individual contributors.

Participate in architecture discussions, technical solutioning, code reviews, and release planning.

Support CI/CD, deployment automation, monitoring, and operational improvements.

Help modernize and optimize existing applications, workflows, and data processing pipelines.

Required Technical Skills

AWS Cloud Technologies

Strong hands‑on experience with:

AWS Lambda

AWS Step Functions

API Gateway

CloudWatch

IAM Roles & Security

Event‑driven architecture

Data & Database Technologies

Strong experience with:

DynamoDB

PostgreSQL

Amazon Redshift

Data modeling and query optimization

Performance tuning and troubleshooting

Postgres database use and essential SQL skills

Streaming & Integration Technologies

Experience with:

Amazon Kinesis

AWS DMS (Database Migration Service)

CDC (Change Data Capture)

Real‑time data processing and integrations

Architecture & Engineering

Strong understanding of:

Distributed systems

Microservices architecture

Fault‑tolerant system design

Scalable cloud‑native applications

API integrations

Asynchronous workflows

Performance optimization

DevOps & Automation

Experience with:

CI/CD pipelines

Git workflows

Deployment automation

Infrastructure as Code (Terraform/CloudFormation preferred)

Monitoring and observability practices

Leadership & Soft Skills

We are specifically looking for someone who:

Can quickly absorb domain and system knowledge independently

Is collaborative, humble, and solution‑oriented

Encourages teamwork and knowledge sharing

Mentors and supports other developers

Avoids knowledge silos and dependency creation

Has strong ownership and accountability

Can professionally challenge ideas without ego

Has excellent troubleshooting and problem‑solving skills

Remains calm and effective during production incidents

Is proactive, self‑driven, and continuously looking for improvement opportunities

Nice to Have

AI integration knowledge

Jira workflow optimization experience

Test automation understanding

AWS Certifications

Experience working in enterprise‑scale environments

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