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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